According to the given statement A solution's ammonia concentration will be 0.0106 M.
What is concentration in chemistry?The amount of solute contained in a specific solution volume is the substance's concentrations. The molarity of solute for 1 L of solution, or molarity, is used to express quantities.
Briefing:NH₄OH(aq) + HCl (aq)⇒ NH4Cl(aq) + H2O (l)
According to the neutralization law,
n[tex]_1[/tex]M[tex]_1[/tex]V[tex]_1[/tex] = n[tex]_2[/tex]M[tex]_2[/tex]V[tex]_2[/tex]
where,
M[tex]_1[/tex] = molarity of HCl solution = 0.1080 M
V[tex]_1[/tex] = volume of HCl solution = 24.60 ml
M[tex]_2[/tex] = molarity of NH₄OHsolution = ?
V[tex]_2[/tex] = volume of NH₄OH solution = 250.0 ml
n[tex]_1[/tex] = valency of HCl = 1
n[tex]_2[/tex] = valency of NH₄OH= 1
1 * 0.1080 M * 24.60 = 1 * M2 * 250.0
M2 = 0.0106
As a result, a solution's ammonia concentration will be 0.0106 M.
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Sodium and lithium have similar chemical properties. What characteristic of these elements explains why they are chemically similar?.
Sodium metal (Na) has properties with lithium metal (Li) because the two metals are located in the same group, namely group IA.
What are the physical and chemical properties of group IA?All elements in group IA are included in the alkali metals, except hydrogen, because the character possessed by hydrogen is "different" and does not match the character of other alkali metals.
Physically properties, all alkali metals are shiny white (silver), except for cesium which is golden yellow. The texture of this metal tends to be soft. If we try to burn this metal, the resulting flame will be different, namely lithium (red), sodium (yellow), potassium (purple), rubidium (red), and cesium (blue).Chemical properties, alkali metals are the most reactive metal group. That is, the more reactive a metal is, the easier it is to lose electrons. In addition, if we order from top to bottom on the periodic table, the electronegativity, ionization energy, melting point, and boiling point properties will be smaller.Learn more about alkali metals here https://brainly.com/question/19109836
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what is the temperature of 0.43 mol of xe gas contained in a 2.65 l container at 3.77 atm? question 7 options:
The temperature of 0.43 mol of xe gas contained in a 2.65 l container is 2.79 K.
An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.
Volume is a degree of occupied three-dimensional space. it's far more frequently quantified numerically the usage of SI-derived gadgets or by way of diverse imperial gadgets. The definition of length is interrelated with the extent.
An ideal gas is described as one for which both the extent of molecules and forces between the molecules are so small that they have got no effect on the behavior of the gas. The real gas that acts almost like a really perfect gasoline is helium. that is due to the fact helium, in contrast to maximum gases, exists as an unmarried atom, which makes the van der Waals dispersion forces as low as viable
Using the ideal gas equation:-
Given;
PV = nRT
T = PV/nR
= 3.77 × 2.65 / 0.43 × 8.314
= 2.79 K
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chemical analysis of an unknown compound shows that it contains 64.9% c, 13.5% h, and 21.6% o by mass. at 120oc and 750 mmhg, 2.00 l of the gaseous compound weighs 9.1 g. a. what is the empirical formula of the compound?
The empirical formula of the compound C₄H₁₀O₁.
The empirical method of a chemical compound is the simplest entire range ratio of atoms present in a compound. The empirical formula of a compound is the most effective whole variety ratio of atoms of each detail in the compound.
Step 1: decide the masses. Step 2: decide the variety of moles by dividing the grams by means of the atomic mass. Step 3: Divide the wide variety of moles of every detail through the smallest quantity of moles. Step 4: Convert numbers to complete numbers.
divide by smallest
64.9% C /12 = 5.4 5.4/ 13.5 = 4
13.5% / 1 H = 13.5 13.5 /1.35 = 10
21.6% / 16 O = 1.35 1.5/1.5 = 1
Empherical formula = C₄H₁₀O₁
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Write about a time when you experienced or witnessed a microaggression. Connect how you felt to how an element may feel when their electrons are taken away. How do microaggressions relate to ionization energy? How could we use this to explain ionization energy to someone who is not familiar with chemistry?
A time when you experienced microaggression was when i wnet to college in another state. The lecturer in one of my course was very angry that i left my tribe, my state to another state to study. There was element of mockery in his voice.
I felt sad, angry and also bad at the same time. I just wanted to run away from the class because all eyes were on me.
Microaggressions relate to ionization energy through the power they command or hold. I can explain Microaggressions as ionization energy to someone as having the power to aggressively give out a part of you that can be good or bad.
What is an example to clarify what ionization energy is?Ionization energies gauge an atom's propensity to resist losing electrons. For instance, removing an electron from a neutral fluorine atom to create a positively charged ion requires a significant amount of energy.
Note that Microaggressions are everyday verbal, behavioral, or environmental slights that signal hostility, denigration, or negative views toward stigmatized or culturally marginalized groups. They can be deliberate or inadvertent. Chester M., a psychiatrist at Harvard University, originated the phrase.
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Chemical reactions are essential to the function of the human body. Many of these reactions would not occur without the presence of substances called enzymes.
Describe enzymes and give an example that shows their importance in the human body.
Explanation:
enzymes are biological catalysts that increase the rate of reaction without being used up in the reaction process.
this is done by providing an alternative route to the reaction progress that'll require a lower activation energy.
example - digestive enzyme Amylase, is used to breakdown sugars into glucose for cellular respiration.
hope it helps. :)
1.explain why a polar aprotic solvent is used for this reaction? what is the polar aprotic solvent that is used?
Polar aprotic solvents are those solvents which have not acidic proton and polar nature.
Polar aprotic solvents are used in SN1 mechanism because these solvated both carbocation and anion .
The SN1 reaction mechanism follows a stepwise process in which the carbocation is first formed by removal of a leaving group. The carbocation is then attacked by a nucleophile. Finally, the protonated nucleophile is deprotonated to yield the desired product.
Thus, polar protic solvents help stabilize both carbocations and anions, and solvation of both cations and anions aids the progression of the SN1 mechanism. Therefore, polar protic solvents favor the SN1 mechanism.
Polar aprotic solvents are solvents that do not have acidic protons and are polar. Such solvents lack hydroxyl and amine groups. Many solvents, including chlorocarbons and hydrocarbons, can be classified as aprotic, but polar aprotic solvents are of particular interest due to their ability to dissolve salts.
examples: Actone , ethyl acetate
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a copper ore consisting of 12.5% copper(ii) sulfide (95.61 g/mol), when heated and reacted with oxygen gas (32.00 g/mol), produces copper(ii) oxide (79.55 g/mol) and sulfur dioxide (64.06 g/mol). if the reaction has a 90.0% yield, how many grams of copper(ii) oxide are produced when 1.00 kg of the copper ore is processed?
93.7 grams of copper(ii) oxide are produced when 1.00 kg of the copper ore is processed .
What is combustion ?
Combustion, a chemical reaction between substances, usually containing oxygen, that involves the production of heat and light, usually in the form of a flame. The speed or rate at which reactants combine is partly due to the nature of the chemical reaction itself, and partly due to the more energy produced than can escape to the surrounding medium, the temperature of the reactants is used to rise. further accelerate the reaction.
A well-known example of a combustion reaction is a lit match. When you light a match, the friction heats the head to a temperature at which the chemicals react, producing more heat than escaping into the air and burning in a flame.
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the electron configurations of five different elements are shown below. which of these elements is expected to have the largest second ionization energy (ie2)? (i) 1s22s22p63s1 (ii) 1s22s22p63s2 (iii) 1s22s22p63s23p1 (iv) 1s22s22p63s23p4 (v) 1s22s22p63s23p5
The electronic configuration which have highest second ionization energy will be "1s22s22p63s2".
The energy needed to free the outermost, or lowest bound, an electron from an element's 1+ ion is known as the second ionization energy. The secondary ionization energy of an element would be usually greater than the first since a positive charge greater strongly attracts electrons than a negative charge.
The electronic configuration is 1s22s22p63s2.
It can remove 2 electrons to gain positive charge.
By removing 2 electrons, it attain +2 charge
In mass spectrometry, a variety of ionization techniques are employed. Electron impact (EI) as well as Fast Atom Bombardment are the two traditional techniques that most chemists were familiar with (FAB).
Therefore, the correct answer will be option (ii)
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For many purposes we can treat propane C3H8 as an ideal gas at temperatures above its boiling point of −42.°C Suppose the temperature of a sample of propane gas is raised from -28.0°C to 9.0°C, and at the same time the pressure is increased by 5.0%
The percent change in volume is 21 %.
given that :
Temperature T1 = 245 K
temperature T2= 282 K
Pressure P1 = P
pressure P2 = P - 0.05 = 0.95 P
V1 = V
V2 = ?
using the ideal gas equation , we get :
P1 V1 / T1 = P2 T2 / V2
V2 = ( P1 V1 T2 ) ( P2 T1 )
V2 = ( P × V × 282 ) /( 0.95P × 245)
V2 = 1.21 V
change in volume = V2 - V1 = 1.21 V - V
= 0.21
% change in volume = 0.21 × 100 %
= 21 %
Thus, The percent change in volume is 21 %.
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the bromophenol blue endpoint is surpassed in the back titration of the excess hcl with the sodium hydroxide titrant. as a result of this technique error, will the reported amount of antacid in the sample be too high or too low? explain.
The reported amount of antacid in the sample will be too high.
What are antacids?
Antacids are simply assembled salts and salk like compound which help in neutralizing of acids.This Neutralization reaction by antacids leads to various products such as other salts, water and possibly carbondioxid which results in hydrolysis and insoluble compound precipitation. There is a noticeable decline in the neutralizing ability by antacids and neutralization rate of aluminum-containing antacids when they are neutralized ny antacids in the presence of organic acids, peptones, and polypeptides.
In above case, the reported amount of antacid will be high because it will report as more NaOH needed to neutralize a greater amount of HCl.
Hence, The reported amount of antacid will be too high.
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The sample's antacid content will be overstated in the reported amount.
What are antacids?
Simple salts and salk-like compounds that are assembled to form antacids aid in neutralising acids. Antacids' neutralisation reaction produces a number of byproducts, including other salts, water, and possibly carbon dioxide, which causes hydrolysis and the precipitation of insoluble compounds. When aluminum-containing antacids are neutralised by antacids inside the presence of organic acids, peptones, and polypeptides, there is a discernible decline in their ability to neutralise and rate of neutralisation.
In the aforementioned situation, the reported amount of antacid would be high because more NaOH will be required to neutralise a larger amount of HCl.
Hence, The reported amount of antacid will be too high.
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what level of measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics?
Quantitative measurement is being employed in a map of countries depicting the number of gold metals they won at the most recent olympics.
In this measurement the numbers are counted that thus can be used as reference tool. Numbers are used to express quantitative data, which are measures of values or counts. Numerical variables are the subject of quantitative data (e.g. how many; how much; or how often). Qualitative data can be represented by a name, symbol, or number code and are measures of "types."
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an aqueous potassium carbonate solution is made by dissolving 6.63 moles of k2co3 in sufficient water so that the final volume of the solution is 2.80 l . calculate the molarity of the k2co3 solution.
The molarity of the K₂CO₃ solution is 2.36 M.
MolarityThe unit of molarity is molar or M is the same as moles per liter, when n moles of a compound appear that have been dissolved in V liters of solution, the molarity formula is [tex]M = n/V[/tex]
M = molarity
n = number of moles
V = volume of solution
The concentration of the solution states the quantitative composition of the substance that has been dissolved and the solvent in the solution. Determination of the concentration or vice versa depends on the number of solution ratios of each substance that enters. Chemical reactions occur during the process and result from the presence of the same solution.
So, the molarity of the K₂CO₃ solution is:
[tex]M =6.63/2.8[/tex]
[tex]=2.36[/tex] M
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calculate the ph of a buffer solution obtained by dissolving 29.029.0 g of kh2po4(s)kh2po4(s) and 44.044.0 g of na2hpo4(s)na2hpo4(s) in water and then diluting to 1.00 l.
The pH of buffer solution obtained will be 7.05 by dissolving 29.029.0 g of kh2po4(s)kh2po4(s) and 44.044.0 g of na2hpo4(s)na2hpo4(s) in water and then diluting to 1.00 l.
This can be calculated using use Henderson - Hasselbalch equation:
PH = Pka + ㏒ [A/AH]
Molar mass of KH₂PO₄ = 136.0 g And Molar mass of Na₂HPO₄ = 142.0 g
No. of moles of H₂PO₄⁻ = No. of moles of KH₂PO₄ = (29..0 g) / (136.0 g/mol) = 0.213 mol
No. of moles of HPO₄²⁻ = No. of moles of Na₂HPO₄ = (44.0 g) / (142.0 g/mol) = 0.30 mol
In the solution, [HPO₄²⁻]/[H₂PO₄⁻] = 0.213/0.30
Henderson-Hasselbalch equation:
pH = pKₐ + log([HPO₄²⁻]/[H₂PO₄⁻])
pH = 7.21 + log(0.213/0.30)
pH = 7.05
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If 2 isotopes of Osmium existed, Os-190 and Os-191, which one would have the highest percent abundance? How do you know?
If 2 isotopes of Osmium existed, Os-190 and Os-191, one would have the highest percent abundance is Os - 190.
The isotopes are elements of the same family that all have the same number of protons but have the different number of neutrons. The two common type of isotopes of osmium is Os - 190 and the Os - 191. The isotopes whose mass is closer to the the relative atomic mass of osmium would have the highest percentage of the abundance. that is osmium 190.
Thus, If 2 isotopes of Osmium existed, Os-190 and Os-191, one would have the highest percent abundance is Os-190.
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If the following elements were involved in a chemical reaction, which one would be most likely to form a cation?
O nitrogen (N)
potassium (K)
Ofluorine (F)
Ochlorine (CI)
Among elements that are involved in a chemical reaction, one that would be most likely to form a cation is : potassium (K)
Why potassium is cation?In the periodic table, potassium is one of the alkali metals which has a single valence electron in the outer electron shell. This valence electron is easily removed to create an ion with a positive charge that is a cation.
Halogens always form anions whereas alkali metals and alkaline earth metals form cations.
Cl- is an example of anion as Cl- atom is a chlorine atom that has gained one electron and has a negative charge of -1 since it has a full outer shell. A negatively charged ion fluorine is an anion.
Nitrogen is neither a cation nor an anion as it falls in the category of atom and atoms are electrically neutral.
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if 27.5 grams of bromine and 12.2 grams of chlorine combine to form bromine monochloride, how many grams of bromine monochloride must form?
According to the given statement 39.45 g many grams of bromine monochloride must form.
How does chlorine help digest food?Last but not least, chloride aids in the creation and release if hydrochloric acid (HCl), which is necessary for the appropriate breakdown and absorption of food in the stomach. Chlorine kills pollutants more quickly but does so for a shorter amount of time since it evaporates more quickly. For a longer time, although more slowly, bromine destroys pollutants;
Briefing:When 27.5 grams of bromine and 12.2 grams of chlorine react, bromine monochloride is produced.
Br2 + Cl2 ---> 2BrCl
mol Br2= 27.5/160g/mol= 0.171mol
mol Cl2= 12.2g/70.906g/mol= 0.172mol
Number of moles of BrCl formed = 2×0.171= 0.342 mol.
mass BrCl= 0.342 mol x 115.357g/mol= 39.45 g
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why is the extrapolation method for determining the titration end point is more accurate than finding the minimum conductivity
Extrapolation method for determining the titration end point is more accurate than finding the minimum conductivity because there is no human error when calculating as there could be with doing the actual experiment
Extrapolation is the estimating an unknown value based on extending a known sequence of values and to extrapolate is the infer something not explicitly stated from existing information and the point at which the indicator changes color is called as endpoint and so the addition of an indicator to the analyte solution help us to visually spot the equivalence point in an acid base titration and the endpoint refer to the point at which the indicator changes color in and acid base titration
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aluminum hydroxide is an ingredient in some antacids. it reacts with hydrochloric acid (the acid in your stomach) according to the following equation: (enter your answer to three significant figures.) a question content area how many grams of react with 2.65 g of ?
The number of moles of aluminum that neutralizes the antacid is 7.95 moles.
An antacid is a substance that neutralizes the acidity in our stomach. Antacid contains substances like aluminum, magnesium and etc. It makes the pH alkaline when the pH drops below the required amount.
According to the given condition, aluminum hydroxide reacts with hydrochloric acid.
Al(OH)3 + 3Hcl - Alcl3 + 3 H2O.
Here, 1 mole of aluminum hydroxide reacts with 3 moles of hydrochloric acid.
Therefore, 2.65g will react with 3/1 moles.
Therefore, 3/1 x 2.65 = 7.95 moles.
Complete question: -
Some antacid tablets contain aluminum hydroxide. The aluminum hydroxide reacts with stomach acid according to the equation: AI(OH)3 +3HCIAICI, +3H2O. Determine the moles of acid neutralized if a tablet contains 0.200 mol of Al(OH)3
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which method can be used to visualize lipids that have been separated by thin-layer chromatography by reversibly reacting with double bonds in fatty acids?
The method can be used to visualize lipids that have been separated by thin-layer chromatography by reversibly reacting with double bonds in fatty acids in iodine fumes.
Chromatography on silica-impregnated paper is a very useful and versatile analytical method. Thin-layer chromatography is considered one of the most effective and versatile techniques for separating intact complex lipids and their lipid moieties as well as neutral lipids.
Solvents play an important role in both pathways as lipids are extracted using solvent-based techniques. In some cases the solvent is incorporated directly into the cell pellet, in others, the solvent is used during cell disruption. The separation and identification of unsaturated fatty acids are commonly performed by bromination or hydroxylation processes that convert unsaturated acids to the corresponding Bromo- or hydroxy-derivatives of saturated fatty acids.
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Which example involves the transformation of chemical enegy directly to light energy?
1.A glow stick
2.Photosynthesis
3.Windmill
4.A hydroelectric dam
A glow stick is an example of a device that directly converts chemical energy into light energy.
A) A glow stick generates luminance, or light energy, using chemical energy from the compounds contained within it. When the stick is broken or twisted, the chemicals inside it are released and, through a chemical reaction, chemical energy is transformed into light energy.
B) plants employ light energy during photosynthesis to create oxygen and energy in the form of sugar (glucose).
C) The wind serves as the energy source for a windmill, and when the rotor blades revolve, the wind energy is transformed into mechanical energy. Then, electrical energy is created from that mechanical energy. The light energy produced by these electrical currents is subsequently employed in lamps. As a result, the chemical energy is not changed directly.
D) Water provides mechanical energy to a hydroelectric dam. When the water reaches the turbine, the gravitational potential energy that it had because of its height is transformed into kinetic energy. Then electrical energy is created from this kinetic energy.
Therefore, Glow Stick is the sole example where chemical energy is transformed into light energy in this manner.
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when 14 gm of CO gas reacted with an excess amount of oxygen the volume of produced CO2 at STP is. ?
Answer:
22.4 liters
Explanation:
1 Mole of gas occupies 22.4 Litres of volume at STP.
Given, the mass of CO=14 g
Molar mass of CO=12+16=28 g
No. of moles of CO=
28
14
=0.5 Moles
So, CO occupies 0.5×22.4=11.2 L at STP.
What is the reaction and product of each of the formulas
HCI + NaOH --> H₂O + NaCl
_C3H8 + 502 --> 3CO₂ + 4H₂O
2Li+F2 --> 2LiF
2AgNO3 + CuCl2 --> _Cu(NO3)2 + 2AgCl
Explanation:
1. HCI + NaOH --> H₂O + NaCl is a neutralisation reaction. The product is soluble sodium chloride salt and water.
2. _C3H8 + 502 --> 3CO₂ + 4H₂O is a propane combustion reaction. The product is carbon dioxide gas and water.
4. 2Li+F2 --> 2LiF is a combination reaction. The product is insoluble lithium fluoride solid
5.2AgNO3 + CuCl2 --> _Cu(NO3)2 + 2AgCl is a precipitation reaction. The product is copper(II) nitrate and an insoluble silver chloride salt(precipitate)
when a substance exhibits resonance, we say that none of the individual lewis structures accurately portrays the bonding in the substance. why do we draw resonance structures?
The class of Lewis structures known as resonance structures depicts the movement of bonds and lone pairs through various configurations. Resonating structures are produced by the complete transfer of electrons during delocalization from one atom to the following atom. We can infer from this that the distribution of charges is distributed evenly across the molecule, rather than being concentrated at a single location. The electrons are not concentrated around the sigma bond, as shown by resonance structures. The entire molecule now has a high electron charge density. The preferred representation of the molecule is displayed by the resonance structures. The collection of structures suggests that the pi bond's electrons are distributed evenly throughout the molecule and are not concentrated at any one point. Following the octet rule, resonating structures indicate that the atom
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a piece of wood is measured and 1/4 of its 14c has decayed into 14n. approximately how old is it? (note: the half-life of 14c is 5,730 years.) a. 5,730 years b. 2,865 years c. 11, 460 years d. 50,000 years
A piece of wood is measured and 1/4 of its 14c has decayed into 14n. The half-life of 14c is 5,730 years. Approximately 5,730 years old is it.
What is Half-Life ?The half-life is the time required for a quantity to fall to half of its starting value. The expression is commonly used in nuclear physics to describe how quickly unstable atoms decay radioactively or how long stable atoms remain. The term can also be used more generally to refer to any type of exponential decay.
A measurement of a piece of wood reveals that one-fourth of its 14c has converted to 14n.
With a half-life of 5700 30 years, radiocarbon (14C) is particularly useful for dating in archaeology. The Gamow-Teller ß-decay, an uncommon impediment to the beta decay of 14C to 14N, causes this half-life to be short.
Radiocarbon dating, also referred to as carbon-14 dating, is a method of radiometric dating. It uses the naturally occurring radioisotope carbon-14 (14C) to estimate the age of items containing carbon up to a maximum of 58,000–62,000 years. Carbon has two stable, nonradioactive isotopes: carbon-12 and carbon-13. On Earth, trace amounts of the unstable radioactive carbon-14 (14C) are also present. Carbon-14 has an extremely short half-life of 5,730 years due to radioactive decay to nitrogen-14, which means that within this time, the percentage of carbon-14 in a sample will have dropped by 50%. Carbon-14 would vanish from Earth's atmosphere in less than a million years if it weren't for cosmic rays that are continually pelting the stratosphere and interacting with nitrogen molecules (N2) and single nitrogen atoms.
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a 200. g sample of a metal is heated to 54 degrees celsius and then dropped into 119. g of water in a calorimeter. the temperature of the water rises from 21.0 degrees celcius to 41.0 degrees celcius. what is the specific heat of the metal (j/g.k)?
The specific heat of given metal is 3.83 j/g.k
What is specific heat?Specific heat, the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius. Units of specific heat are usually calories or joules/grams . Celsius.
Considering:
Heat gain by water = Heat lost by metal
Qₐ = Qₓ
mₐ cₐ (T₂ - T₁) = mₓ cₓ (Tₙ - T₂)
Where, mₐ = 119 g (mass of water)
cₐ = 4.186 j (specific heat of water)
T₂ = 41.0°C (final temperature of water)
T₁ = 21.0°C (initial temperature of water)
mₓ = 200 g (mass of metal)
cₓ = specific heat of metal
Tₙ = 54°C (Initial temperature of metal)
Now, substitute the values in the equation mentioned above,
119 × 4.186 × (41.0 - 21.0) = 200 × cₓ × ( 54 - 41.0)
9962.68 = 2600 cₓ
cₓ = 3.83 j/g.k
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the intial temperature of both the acid and the base were 22.6 oc, but they rose to 28.2 oc during the reaction. if the calorimeter constant was 78.5 j/oc, what was qrxn in j? give your answer to 3 sigfigs, and watch your signs
The intial temperature of both the acid and the base were 22.6 oc, but they rose to 28.2 oc during the reaction. if the calorimeter constant was 78.5 j/oc Initial temperature = final temperature - change in temperature
Initial temperature is the average temperature of the contents of the coldest processing container at the start of the thermal processing cycle, as determined by thoroughly stirring or shaking the filled and sealed container. 32°F (0°C). Tell your audience that the freezing point is the intial temperature at which fresh water begins to freeze. When a liquid turns into a solid, that temperature is known as the freezing point. Water turns from a liquid to a solid at a temperature of 32°F (0°C), which is known as the freezing point.
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Neon has eight valence electrons in its outer shell. This means it does not easily react with other elements, as it has a full octet. Which other element behaves similarly?
Answer:
Any of the noble gasses, eg xenon.
Explanation:
All noble gasses have full outer shells of electrons which means they are very unreactive.
what mass of potassium nitrate can be produced from the reaction of 30.00ml of 0.10m nitric acid with 15.00ml of 0.25m potassium carbonate?
0.28986 M mass of potassium nitrate can be produced from the reaction of 30.00ml of 0.10m nitric acid with 15.00ml of 0.25m potassium carbonate
V₁S₁ = V₂S₂ ( V₁ is the volume of acid ,S₁ is the strength of acid, V₂ is the volume of base , S₂ is the strength of base)
So, S1= V2S2 /V1
Putting the values ;
S1= V2S2 /V1
=> S1 = (32.58×0.08897)/10.00
=> S1 = 0.28986
concentration of solution of phosphoric acid = 0.28986 M
One or more chemicals, sometimes referred to as reactants, are changed into one or more new substances, referred to as products, during a chemical reaction. Chemical elements and compounds are both substances. reacting in action, procedure, or example. opposition to a movement, power, or effect The transformation of one or more chemicals into one or more other compounds is known as a chemical reaction. Examples include how rust is created when iron and oxygen combine. Making sodium acetate, carbon dioxide, and water from vinegar and baking soda. Exploding or burning items
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Select TWO questions that the residents of the farming community could ask to evaluate the proposed solutions.
Question 4 options:
Does this plan take into consideration damage to the crops caused by extreme weather events?
Does this plan allow the farms in our community to continue to be profitable?
Will this plan allow our community members to independently select oil suppliers?
Does this plan allow for a significant reduction in the use of diesel fuel?
Will this plan increase our farming community's access to new varieties of seeds?
Among the following, the most probable questions that could ask to the farming community are options 1 and 4. These questions addresses the issue and advantages of a crop field.
What is farming?Farming is way of growing plant or animal varieties cultivating for food and sail. Better planning and designing of farm field gives benefits for farmers.
Farmers should aware of each varieties of their crop and its growth conditions and disadvantages also. Hence the probable questions that could ask to a farming community are does this plan take into consideration damage to the crops caused by extreme weather events
And the fourth option also will this plan increase our farming communities access to new varieties of seeds?
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I need help with number 5
Answer:
25
E
12
Explanation:
As shown in the pic
Mass number = 12 + 13 = 25
Atomic number = No of protons = 12
