The net ionic equation for the reaction that happens when you combine nahco3 with hc2h3o2 aqueous solutions.
HCO3-(aq) + [tex]H^{+}[/tex] (aq) → H2o(l) + Co2(g)
Below is the balanced chemical equation for the reaction between sodium bicarbonate and acetic acid.
NaHCO3 + CH2COOH → CH3COONa + H2O + CO2
The net ionic equation is:
HCO3- + [tex]H^{+}[/tex] → H2O + CO2
In the form of symbols and chemical formulas, a chemical equation is a symbolic representation of a chemical reaction. On the left side are the entities that make up the reactants, and on the right side are the entities that make up the products. There is a plus sign between the entities that make up the reactants and the products, and the arrow pointing in the direction of the products indicates the direction of the reaction. [1] The chemical equations could be mixed, structural (represented by a picture diagram), or both. The stoichiometric numbers' absolute values are shown as coefficients next to the symbols and formulas of the various entities. In 1615, Jean Beguin drew the first chemical equation.
Learn more about ionic equation here:
https://brainly.com/question/15467502
#SPJ4
what are the steps in the correct order in a single pcr (polymerase chain reaction) cycle? i. elongation ii. annealing iii. amplification iv. denaturation v. extension
The correct order in a single PCR cycle would be denaturation, annealing, elongation, and amplification. IV, II, I, and III.
What is PCR?PCR is an acronym for Polymerase Chain Reactions. It is mechanisms through which scientists are able to amply, sometimes to a tune of millions or billions, a DNA of interest for detailed study.
The process of Polymerase Chain reaction occurs through alternate heating and cooling using a thermal cycler machine. It occurs through a series of steps which are highlighted below:
First, the DNA that contains the gene of interest is first denatured to separate the double-stranded structure into single strands.Next, a primer which is a short artificial DNA of a few nucleotide bases is made to anneal with its complementary bases on the denatured DNA that contains the gene of interest. Then, the primer is further extended by the addition of nucleotide bases that are complementary to the sequence of the gene of interest.Lastly, the process is repeated several times to synthesize multiple copies of the gene of interest.Thus, the right sequence of a PCR cycle would be denaturation, annealing, elongation, and amplification.
More on PCR can be found here: https://brainly.com/question/19670710
#SPJ1
What are the two conditions for an isotope to be unstable?.
The stability of the isotope depends on the composition of its nucleus, number of protons and neutrons and the proton to neutron ratio.
Radioactive isotopes are unstable because they have too many electrons. Many elements have one or more isotopes that are radioactive. These isotopes are called radioisotopes. In nuclear reactions, it is the nucleus of the atom that gains stability by undergoing a change of some kind. Some elements have no stable isotopes, which means that any atom of that element is radioactive. For some other elements, only certain isotopes are radioactive. A radioisotope is an isotope of an element that is unstable and undergoes radioactive decay. The energies that are released in nuclear reactions are many orders of magnitude greater than the energies involved in chemical reactions. Unlike chemical reactions, nuclear reactions are not noticeably affected by changes in environmental conditions, such as temperature or pressure.
To learn more about Isotopes please visit:
https://brainly.com/question/364529
#SPJ4
How do you identify a type of chemical reaction?.
Type of chemical reaction looking at the given products and reactants in the chemical equation.
When atoms' chemical bonds are established or ruptured, chemical processes take place. The materials that initiate a chemical reaction are known as reactants, while the materials created as a result of the reaction are known as products. Although a chemical reaction is not necessarily a "one-way street," as we'll examine further in the following section, it is usually shown by an arrow between the reactants and products. Some chemical processes just go in one way until all of the reactants have been utilised. It is said that these reactions cannot be stopped. But some reactions can be classified as reversible. Reactions that are reversible have the ability to move both forward and backward.
Learn more about chemical reaction here:
https://brainly.com/question/29039149
#SPJ4
When taking a measurement with a pH meter, keep the instrument in the _______1_________ until it is needed. Rinse the pH meter with _______2_______ and gently pat dry. Place the meter in the sample solution, and record the measurement when the pH _________3_________.
1. Storage Solution
2. Deionized water
3. Stabilizes
When measuring with a pH meter, keep the instrument in the Storage solution until it is needed. Rinse the pH meter with Deionized water and gently pat dry. Place the meter in the sample solution, and record the measurement when the pH Stabilizes.
A pH meter is an instrument used to measure hydrogen ion activity in solutions. It must be calibrated before taking pH readings. If exceptionally exact data are needed, calibration should be done at the start of each day or before to each measurement. Select buffers that cover the samples' range of pH values.
When removing electrodes from one solution and preparing to place them in another, ALWAYS rinse them with distilled water and blot them with Kim wipes. Glass electrodes are incredibly fragile and are constructed of very thin glass.
There are two points of equivalency. When using a pH meter to measure something, leave the device in the storage solution until you need it. With deionized water, rinse the pH meter and then gently pat it dry. Once the pH has stabilized, submerge the meter in the sample solution and take a measurement.
To know more about pH meter visit the link:
https://brainly.com/question/16017791?referrer=searchResults
#SPJ4
Does mitosis help with cancer?.
Increased immune resistance brought on by the blockage of the cell cycle during the mitotic phase may aid cancer cells in thwarting immunological attack.
Cancer is caused by "aggressive division" of cells, which the immune system leaves unchecked. In order to thwart the immune system, cancer cells express a number of proteins. Targeting and preventing cancer cells from dividing is a key component of treatment. We discovered that during the mitotic phase of cell division, these proteins express themselves more strongly. As a result, blocking the cell cycle during the mitotic phase may boost immune resistance, which will aid cancer cells in avoiding immunological attack. PBMCs (peripheral blood mono-nuclear cells), a type of cancer cell, and real-time immune cell attack (RTICA) analyses were used. According to our research, cells that express higher levels of HLA-G and PD-L1 are mostly in the G2 phase, while cells that express lower levels are primarily in the G1 phase.
Learn more about cancer cells here:
https://brainly.com/question/14336972
#SPJ4
carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. what is the molar concentration of h3o in a cola that has a ph of 4.240?
The molar concentration of h3o in a cola that has a pH of 4.240 is 5.
What is pH?
A scale is used to describe the basicity or acidity of the an aqueous solution in chemistry, with the term "potential of hydrogen" historically denoting this property. Lower pH values are recorded for acidic solutions (solutions to higher H+ ion concentrations) than for basic or alkaline remedies. The concentration of the solution's hydrogen ions is indicated inversely by the pH scale, which is logarithmic. The set of standard remedies whose pH has been established by international treaty can be used to trace the pH scale. Using a consolidation with transference, the potential difference between such a hydrogen electrode as well as a standard electrode, like the silver chloride electrode, is measured to determine the primary pH standard values.
Hence, the molar concentration of h3o in a cola that has a pH of 4.240 is 5.
To know more about pH from the given link
https://brainly.com/question/172153
#SPJ4
if 3.39 mol of an ideal gas has a pressure of 2.31 atm and a volume of 67.23 l, what is the temperature of the sample in degrees celsius?
Gases are difficult. They contain countless billions of energetic gas molecules that have the potential to collide and interact. Since it is difficult to precisely characterize a real gas, the idea of a "ideal gas" was developed as a rough approximation that aids in modeling and predicting the behavior of real gases.
What is the molar form of the ideal gas law?The ideal gas law, a straightforward formula, relates the pressure, PPP, volume, VVV, and temperature, TTT, of an ideal gas. We typically treat gases as ideal, unless there is a good reason to do otherwise, because of how straightforward this relationship is.PV=nRT, equals, n, R, and T
In this equation, PPP stands for the gas's pressure, VVV for its volume, TTT for its temperature, RRR for its constant, and nnn for its molecular weight.Volume V = 67.23V unitm³
Moles n = 3.39mol
Temperature T = 2.31
P = 0.96846237269814 Pa.
To Learn more about Ideal Gas Law refer to:
https://brainly.com/question/25290815
#SPJ4
The temperature of the sample in degrees Celsius is 0.96846237269814 Pa.
What is the molar form of the ideal gas law?The ideal gas law, a straightforward formula, relates the pressure, PPP, volume, VVV, and temperature, TTT, of an ideal gas.We typically treat gases as ideal, unless there is a good reason to do otherwise, because of how straightforward this relationship is.PV=nRT, equals, n, R, and TIn this equation, PPP stands for the gas's pressure, VVV for its volume, TTT for its temperature, RRR for its constant, and nnn for its molecular weight.
Volume V = 67.23V unitm³
Moles n = 3.39mol
Temperature T = 2.31
P = 0.96846237269814 Pa.
To Learn more about Ideal Gas Law refer to:
brainly.com/question/25290815
#SPJ4
o calculate the isoelectric point of amino acids having other ionizable functional groups, we must also take into account the pka of the additional functional group in the side chain. for an acidic amino acid (one with an additional acidic oh group): for a basic amino acid (one with an additional basic nh group): pi
Two pKas—pKa1 and pKa2 for carboxylic acid and amine, respectively—define these amino acids. The isoelectronic point, pI = 1/2 (pKa1 + pKa2), will lie halfway between or at the average of these two pKas.
Who should avoid consuming amino acids?Nausea, headaches, and soreness are three of the most often stated concerns of long-term amino acid intake. Amino acid supplements may have an impact on your blood sugar levels .This implies you ought to stay away from them both before and after surgery. A single amino acid supplement is generally not recommended, according to several specialists.
Amino acids should be taken when?Adding 5-10 grams of branched-chain amino acids to your shake routine, either pre- or post-workout, is the best time to consume them in order to nourish your body and rebuild your muscles.
To know more about amino acids visit :
https://brainly.com/question/14895346
#SPJ4
half life for radioactive decay of 32p is 14.2 days. how many days would be required for a sample of a radiopharmaceutical containing 32p to decreaseto 20% of its initial activity
The initial activity is t = 33.033 ≈ 3 day.
How do you calculate radioactive decay using half-life?Based on the amount of time needed for a reactant's concentration to drop to half its initial value, another method of describing reaction rates is used. The reaction's half-life, abbreviated as t1/2, is defined as this duration.As a result, the reactant concentration must decrease from [A]0 to [A]0/2 within a certain amount of time for a reaction to reach its half-life.A faster reaction will have a shorter half-life than a slower reaction if the two reactions have the same order.A given set of reaction conditions will always result in a constant half-life for a first-order reaction. Second- and zeroth-order reactions are an exception to this rule. Regardless of the reactant concentration, a first-order reaction has an independent half-life.This is clear from the equation that results from rearranging the integrated rate law for a first-order reaction:m = 0.2m × (1/2) t/14,3 ║ 0,2m
m/0,2m = (1/2) t/14,3
5=(1/2) t/14,3
log ab = C ⇔ ac = b
t/14,3 = log (1/2)5
t/14,3 = 2,31 ║× 14.3
t = 33.033 ≈ 3 day.
To Learn more About half-life refer to:
brainly.com/question/1160651
#SPJ4
suppose that daniel has a 2.50 l bottle that contains a mixture of o2 , n2 , and co2 under a total pressure of 5.10 atm. he knows that the mixture contains 0.310 mol n2 and that the partial pressure of co2 is 0.250 atm. if the temperature is 273 k, what is the partial pressure of o2 ?
The partial pressure of O₂ from daniel's 2.5L bottle that contains a mixture of O₂, N₂ and CO₂ under a total pressure of 5.10 atm is 2.171atm.
What is partial pressure?In a mixture of gases, each constituent gas has a partial pressure which is the notional pressure of that constituent gas as if it alone occupied the entire volume of the original mixture at the same temperature.
How to calculate the partial pressure of O₂?
Volume (V) = 2.5L
T = 273K
o₂ + N₂ + CO₂ ---> Total pressure P = 5.1atm
N₂ = 0.31 mol
Partial pressure CO₂ = 0.25atm
R = 0.0821L (ideal gas constant with given volume in L and temperature in K)
P*V = n*R*T
n = P*V / R*T
= (5.1 * 2.5) / (0.0821 * 273)
= 12.75 / 22.4133
= 0.56886 mole
Partial pressure of N₂
= mol fraction * Total pressure
= (0.31 / 0.56886) * 5.1
= 2.779atm
Total pressure
P = P O₂ + P N₂ + P CO₂
5.2 = P O₂ + 2.779 + 0.25
P O₂ = 5.2 - 2.779 - 0.25
P O₂ = 2.171atm
Therefore, the partial pressure of O₂ is 2.171atm.
Learn more about partial pressure https://brainly.com/question/28250381
#SPJ4
give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of al(c2h3o2)3 and lino3 are mixed.
Since all species appear on both side of the ionic equation, there was no reaction.
Same ions present in both side of complete ionic equation are omitted to write net ionic equation. These ions are called the spectator ions.
first step - write down molecular equation as follows:
Al(C2H3O2)3(aq) + 3LiNO3 (aq) --> 3Li(C2H3O2)(aq) + Al(NO3)2(aq)
second step - write complete ionic equation;
Al3+ (aq) + 3(C2H3O2)^- (aq) + 3Li^+(aq) + 3N03^-(aq) -----> 3Li^+(aq) + 3(C2H3O2)^-(aq) + Al^3+(aq) + 3N03^-(aq)
You can see that all ions that appeared on the left hand side of the reaction equation also appeared on the right hand side of the reaction equation, thus thet are omitted. Hence there was no reaction.
Learn more about spectator ions at
Brainly.com https://brainly.com/question/22277121
#SPJ4
Can you safely reheat rice?.
It is possible to reheat the rice. rice can be heated up quickly in a wok because, unlike other fried foods, it has already been cooked at a high temperature.
Nothing changes even if you try to re-fry rice in oil. There is a link to it here. Stovetop stir-frying is the original technique. This method is my favorite's since it is the most effective at bringing back the crispness of leftover fried rice for same temperature. If it's not possible, cool the rice as quickly as you can (ideally within 1 hour). Frozen rice should only be heated up once within a day. Because its temperature is very less. Make sure the rice is properly steam heated whenever you reheat it.
Learn more about temperature here
https://brainly.com/question/15670457
#SPJ4
which quantities are the same for all atoms of chlorine? i number of protons ii number of neutrons iii number of electrons
The number of protons and electrons is the same for all atoms of Chlorine. The correct options are i and iii
Isotopes are atoms of the same element that have the same number of protons but a different number of neutrons. These variations in the number of neutrons result in atoms of the same element having different mass numbers.
The difference in the number of neutrons means that isotopes of an element have different atomic masses and different physical and chemical properties.
For example, Chlorine has two naturally occurring isotopes, Chlorine-35(17 protons, 18 neutrons) and Chlorine-37 (17 protons, 18 neutrons). All three isotopes have the same number of electrons and protons, but the different number of neutrons results in different mass numbers.
To know more about neutrons, click below:
https://brainly.com/question/26952570
#SPJ4
Approximately what percentage of the atp formed by the reactions of glycolysis is produced by substrate-level phosphorylation?.
The percentage of the ATP formed by the reactions of glycolysis produced by substrate-level phosphorylation is 100%.
What is substrate-level phosphorylation?Substrate-level phosphorylation can be described as a metabolism reaction that occurs in the production of ATP or GTP by the transfer of phosphate from a substrate directly to ADP or GDP.
Transferring from higher energy into a lower energy production process uses some of the released chemical energy to transfer a phosphoryl group to ADP or GDP from another phosphorylated compound.
Oxidation and phosphorylation are not coupled in the substrate-level phosphorylation, and reactive intermediates are commonly gained in the oxidation processes in catabolism. Most ATP is formed by oxidative phosphorylation in anaerobic respiration while substrate-level phosphorylation gives a less efficient and quick source of ATP, independent of external electron acceptors.
Learn more about substrate-level phosphorylation, here:
https://brainly.com/question/29460654
#SPJ1
What is the conflict theory in social work?.
The competition among social groupings for scarce resources is the main topic of conflict theory.
Conflict definition, for instance.An ongoing argument between individuals who hold diametrically opposed principles or opinions: He and his father had a lot of disagreements. As a result of its unpopularity, the policy led to numerous disputes inside the party. Frequently, he and the president would disagree due to his outspoken opinions.
In what ways does a story conflict?These issues are known as conflicts in literature. Conflict is a more exact term for thwarted, imperiled, or competing desire. Essentially, it occurs when a character tries to accomplish a goal but is hindered by external circumstances. Perhaps something is desired by the character but is out of reach.
To know more about Conflict visit:
https://brainly.com/question/17085630
#SPJ4
Which elements do not strictly follow the octet rule when they appear in the Lewis structure of a molecule?
Select one or more:
A: Chlorine
B: Carbon
C: Hydrogen
D: Sulfur
E: Fluorine
F: Oxygen
The elements do not strictly follow the octet rule when they appear in the Lewis structure of a molecule is : chlorine and sulfur.
The elements do not strictly follow the octet rule when they appear in the Lewis structure of a molecule is chlorine and sulfur. according to the octet rule the atom most posses the 8 electrons in the outermost shell called valence electrons. The chlorine and the sulfur will sometimes expand the octet rule this means more than 8 electrons in the valence shell.
Thus, The elements do not strictly follow the octet rule when they appear in the Lewis structure of a molecule is : chlorine and sulfur.
To learn more about Lewis structure here
https://brainly.com/question/20300458
#SPJ4
ow many geometric isomers are possible for [co(en)(nh3)2(h2o)cl] ? how many of those geometrical isomers are chiral? (meaning that each has a non-superimposable mirror image)?
[co(en)(nh3)2(h2o)cl] has a possible four geometric isomers. Unless they also have chiral centers, geometric isomers are typically not optical isomers.
What is an example of an isomer?Isomers are substances that have the exactly the same amount of protons as one another, meaning they have the exact same equations, but differ from one another in terms of how the atoms are ordered. Ethylbenzene, m-xylene, p-xylene, or o-xylene are some examples of isomers having the formula C8H10.
What makes it an isomer?Are referred to as isomers if they have the same chemical formula but different characteristics and atom arrangements. Isomers are chemicals that exhibit isomerism as a result. The Greek words "isos" and "meros," which mean "equal pieces," are the source of the English word "isomer."
To know more about isomers visit :
https://brainly.com/question/12796779
#SPJ4
the partial pressure of oxygen in the atmosphere is 0.2095. calculate the partial pressure in kpa. round answer to significant digits.
The value of pressure 7.0984 mmHg, the value of torr7.0984 torr. To determine the proportion of pressure from the total pressure that may be assigned to each individual gas, divide the mole fraction of each gas by the total mole fraction.
How can I determine the partial pressure?Calculating partial pressures can be done in one of two ways: 1) To determine each gas's unique pressure in a mixture, use PV = nRT. 2) .To determine the proportion of pressure from the total pressure that may be assigned to each individual gas, divide the mole fraction of each gas by the total mole fraction.Explanation:
Data obtained from the question include:
Partial Pressure of Ar = 0.2095 atm
1. The value of pressure in mmHg is obtained as shown below:
1 atm = 760mmHg
Therefore, 0.2095 atm = 0.2095 x 760 = 159.22mmHg
2. The value of the pressure in torr is obtained as shown below:
1 atm = 760torr
Therefore,0. atm = 0.2095 x 760 = 159.22torr.
To learn more about Partial pressures refer to:
https://brainly.com/question/15302032
#SPJ4
compare the magnitude of the lattice energy for each of the following two ion pairs. (a) cs and br- separated by a distance of 441 pm (b) mn2 and o2- separated by a distance of 292 pm
E= -5.23 × 10^-19 J/ion pair for Cs+ Br- ion pair.
E= -1.58 × 10^-18 J/ion pair for Mn2+ O2- ion pair.
therefore, lattice energy of second compound is higher than the first one.
Lattice energy is the bond energy of the compound which is now seperated.
Formula: E = (kq1q2)/r
now inserting the values for Cs+ and Br- into the equation,
where q1 = +1, q2 = −1, and r = 441 pm
Energy associated with the formation of a single pair of Cs+Br-
E= 2.31×10^-28 (+1)(-1)/441 × 10^-12
E= -0.00523 × 10^-16
E= -5.23 × 10^-19 J/ion pair
now inserting the values for Mn+2 and O2- into the equation,
where q1 = +2, q2 = −2, and r = 292 pm
Energy associated with the formation of a single pair of Mn+2O-2
E= 2.31×10^-28 (+2)(-2)/292× 10^-12
E= -0.0158 × 10^-16
E= -1.58 × 10^-18 J/ion pair
Therefore comparing both the ion pairs , the lattice energy of Mn+2 O2- pair is higher than the Cs+ Br- ion pair.
To learn more about lattice energy visit the link- https://brainly.com/question/13169815
#SPJ4
Which groups of the periodic table follow patterns in their valence electrons?.
Answer:
Valence Electrons
what amount of solid naoh must be added to 1.0 l of a 0.14 m h2co3 solution to produce a solution with [h ]
0.0114 g of solid Sodium hydroxide (NaOH) must be added to 1.0 L of a 0.14 M H2CO3 solution to produce a solution with [H+] of 3.5×10−11 M.
What called NaOH ?Lye and caustic soda are other names for sodium hydroxide, an inorganic substance having the formula NaOH. It is a white, solid ionic substance made up of the cations sodium (Na+) and the anions hydroxide (OH).
Contact with very high sodium hydroxide concentrations can result in fatal or severe burns to the eyes, skin, lungs, digestive system, or eyes. Skin contact that is prolonged or repetitive may result in dermatitis. Repeated lung injury from inhaling sodium hydroxide vapour is possible.
H2CO3 + 2NaOH → Na2CO3 + 2H2O
C H2CO3 = 0.14 M
V sln = 1 L
[H3O+] = 3.5 E-11 M
pH = - Log [H3O+]
pH = 10.456
14 = pH + pOH
pOH = 3.544
[OH-] = 2.8571 E-4 M
C NaOH = [OH-]
C NaOH = 2.8571 E-4 M
mol NaOH = (2.8571 E-4 mol/L)*( 1 L ) = 2.8571 E-4 mol
molar mass NaOH = 39.997 g/mol
mass NaOH = (2.8571 E-4 mol)*(39.997 g/mol) = 0.0114 g
To learn more about sodium hydroxide refer :
https://brainly.com/question/29327783
#SPJ4
How does contemporary become traditional?.
Contemporary- traditional become utilizing classical techniques in drawing, painting, and sculpting.
Contemporary-Traditional Art is a term used to describe artwork created in the present that employs traditional drawing, painting, and sculpture techniques to reflect the current culture. In order to portray human feelings and experiences through the creation of figurative and representational works of fine art, practising artists are primarily concerned with maintaining time-honored techniques. Subjects are built on the aesthetics of balancing the intuitive, internal conscience propelled by emotion, philosophical thought, or the spirit with the exterior reality. The phrase is used generically to refer to all representational art forms and aesthetics, including Classicism, Impressionism, Realism, and Plein Air (En plein air) painting. The Renaissance, Academic Art, and American Impressionism are the foundations of technical knowledge.
Learn more about Contemporary traditional here:
https://brainly.com/question/11423464
#SPJ4
put the steps of this transport pump in order na-k pump question 18 options: potassium triggers dephosphorylation of the pump which stabilizes the e1 confirmation. 2 potassium bind the e1 confirmation is open to the inside of the cell and has a high affinity for sodium 2 potassium ions are released inside the cell 3 sodium ions bind the e2 confirmation is open to the outside of the cell and has a high affinity for potassium. 3 sodium ions are released outside the cell. sodium triggers phosphorylation of the pump which stabilizes the e2 confirmation.
The carrier protein and three sodium ions first bind. The carrier protein and three sodium ions first bind. The sodium exits thanks to the altered form. Here 2 potassium ions are discharged.
The carrier protein is shaped in such a way that it can attach to potassium. The protein undergoes another shape change after the release of the sodium ions. The cell is now filled with potassium ions. The e2 confirmation is stabilized by the pump being phosphorylated by sodium, which causes it to happen. With an extremely high affinity for sodium, potassium binds the e1 confirmation, which is accessible to the inside of the cell. Inside the cell, 2 potassium ions are discharged. Three sodium ions bind to the e2 confirmation, which is accessible from the outside of the cell and has a strong affinity for potassium.
Learn more about sodium ions here
https://brainly.com/question/25883474
#SPJ4
Suppose 2.5 g of Compound A and 6.5 g of Compound B are consumed in a reaction that produces only one product, Compound C. Calculate the theoretical yield of C. Round your answer to the nearest 0.1 g. Suppose 6.0 g of C are actually isolated at the end of the reaction What is the percent yield of Compound C? Round your answer to the nearest whole percent. x ?
According to the given statement 70% is the percent yield of Compound C.
What are instances and compounds?A composite is a material made of two maybe more components. Examples of compounds includes carbon dioxide, water, and table salt.
Briefing:According to the information provided, a reaction that results in the production of Compound C uses 2.5 g of Compound A and 6.0 g of Compound B. We can presume that the mass of A and B that are both entirely consumed to form C has been calculated using the limiting reactant.
The sum of a masses of the reactants equals the total of the masses of the products according to the rule of mass conservation. so:
Theoretical yield
= sum of the reacting masses
Theoretical yield = (2.5 + 6.0) g
Theoretical yield = 8.5g
Percentage yield
= (actual yield/theoretical yield) * 100%
Percentage yield = (6.0 g / 8.5 g) * 100%
Percentage yield = 70%
To know more about Compound visit:
https://brainly.com/question/13516179
#SPJ4
a block of ice at 0oc is added to a 150-g aluminum calorimeter cup that holds 200 g of water at 10oc. if all but 2 g of ice melt, what was the original mass of the block of ice?
The ice block's original mass is 31.0312 grams.
What was the original mass?150 g for each cup.
Ice is at 0 degrees Celsius.
mass of water Equals 200 g
10°C is the water temperature.
2 grams of ice melt
finding out
solution
We are aware of this
Aluminum has a specific heat of c = 0.900 joule/gram °C.
Water's specific heat is 4.186 joule/gram at °C.
Thus, the temperature difference in this case is dt = 10-0 = 10°C.
so, in this instance, the heat given out by the
Heat lost is calculated as follows: water mass C dt + cup mass C dt
Heat loss is equal to 150 x 0.900 + 200 x 4.186.
temperature lost: 9722 J
so
Heat lost / latent heat of fusion here equals the mass of the ice melting.
The latent heat of fusion is given here as 334.88 joule/gram.
so
ice melt mass equals 9722 / 334.88
Ice melt weighs 29.0312 grams.
Therefore, the mass of ice in this area equals the sum of the mass of ice melt and ice melt.
ice mass = 29.0312 + 2
ice's mass is 31.0312 grams.
Consequently, the ice block's original mass is 31.0312 grams.
To learn more about original mass refer to:
https://brainly.com/question/13088979
#SPJ4
What led to the prohibition of alcohol?.
(- Temperance Movement
there was a combination of political and social factors that led to prohibition. one of the main political factors was the Temperance Movement.
The temperance movement was a social movement against the consumption of alcohol.
What group forms a negative ion?.
If an extra electron is pushed into the atom so that it has an excessive number of electrons then it would form a negative ion.
The right side of the Periodic Table, or the side with no metals, is where non-metals are located.
Atoms generally experience atomic radius contraction as a result of adding electrons to the same valence shell and protons to the nucleus, with the smallest atoms to the right of the Periodic Table
As a result, the elements on the right side of the Periodic Table, such as fluorine, chlorine, and oxygen, Tend to be oxidizing, which means that their unshielded nuclear charge causes them to accept electron density.
N³⁻,O²⁻,F⁻ and Cl⁻
Clearly, the Parent atoms (or molecules) are unquestionably oxidizing species.
Know more about Negative ions at:
brainly.com/question/20544163
#SPJ4
when 15.1 g of al reacts with 17.7 g of oxygen gas, how many grams of al2o3 (101.96 g/mol) are predicted to form? report your answer to the tenths place and do not include units.
[tex]2Al+ 1.5O_2 \to Al_2O_3\\2Al= 2×27=54 \\g .[/tex]
Hence, the weight of Al used in the chemical reaction is 54 g.
What is a chemical reaction?
chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.Chemical reactions are a fundamental component of life itself, as well as technology and culture. Burning fuels, smelting iron, creating glass and pottery, brewing beer, making wine, and making cheese are just a few examples of ancient processes that involved chemical reactions.To know more about chemical reactions, click the link given below:
https://brainly.com/question/29039149
#SPJ4
Write both answers to at least two decimal places. Calculate the pH of a 0.160 M solution of KOH.Part 2 (1 point) Calculate the pOH of a 0.160 M solution of KOH.
To calculate the pH of a solution, we first need to find the concentration of hydronium ions in the solution. Since KOH is a strong base, it dissociates completely in water to produce hydroxide ions (OH-) and potassium ions (K+).
The concentration of hydronium ions in a solution of KOH can be calculated using the concentration of hydroxide ions and the equilibrium constant for water, which is equal to 1.00 x 10^-14 at 25 degrees Celsius.
The concentration of hydroxide ions in a 0.160 M solution of KOH is equal to the concentration of KOH, which is 0.160 M. The concentration of hydronium ions in the solution can be calculated using the equation below:
[H3O+] = (1.00 x 10^-14) / [OH-]
Substituting the concentration of hydroxide ions into the equation above, we get:
[H3O+] = (1.00 x 10^-14) / (0.160 M) = 6.25 x 10^-13 M
To calculate the pH of the solution, we need to take the negative logarithm of the concentration of hydronium ions. This can be done using the equation below:
pH = -log([H3O+])
Substituting the concentration of hydronium ions into the equation above, we get:
pH = -log(6.25 x 10^-13) = 12.20
The pH of a 0.160 M solution of KOH is 12.20.
To calculate the pOH of a solution, we first need to find the concentration of hydroxide ions in the solution. Since we already calculated this value above, we can simply use the concentration of hydroxide ions we found earlier: 0.160 M.
To calculate the pOH of the solution, we need to take the negative logarithm of the concentration of hydroxide ions. This can be done using the equation below:
pOH = -log([OH-])
Substituting the concentration of hydroxide ions into the equation above, we get:
pOH = -log(0.160 M) = 1.80
The pOH of a 0.160 M solution of KOH is 1.80.
Learn more about pH:
https://brainly.com/question/28864035
#SPJ4
both copper (atomic number 29) and chromium (atomic number 24) appear to break the pattern in the order of filling the 3d and 4s orbitals. this change in pattern is expressed by
A decrease in the amount of electrons in the 4s orbital and an increase in the 3d orbital are indicators of the pattern alteration.
THE ORDER OF FILLING 3d AND 4s ORBITALS: -
You may easily determine the electrical structures of elements by using the method that is typically taught when explaining the sequence in which orbitals are filled. However, it does provide issues when attempting to describe various transition element features.
The order of filling orbitals: -
Prior to filling higher energy orbitals, electrons first fill low energy orbitals that are closer to the nucleus. When given the option between two orbitals with the same energy, they fill the orbitals singly as much as they can.
To learn more about 3d and 4s orbitals https://brainly.com/question/29573595
#SPJ4
