The average rate of the reaction during the time interval of 0.530 m to 0.512 m is 0.00041 M/s.
The decomposition of HBr takes place according to the reaction below,
2HBr(g) = H2(g)+ Br2(g)
a) Rate of reaction is the measure of the change in concentration of the reactants or the change in concentration of the product per unit time(seconds).
Therefore;
Rate = -1/2(Δ(HBr)/Δt = Δ(H₂)/Δt =Δ(Br₂)/Δt,
where ΔHBr is the change in concentration of HBr (reactant), ΔH₂ is the change in hydrogen concentration , ΔBr₂ is the change in bromine concentration and Δt is the change in time.
b) Average rate of reaction after 22 sec will be,
rate = -1/2Δ(HBr)/Δt
= -1/2 (0.530 M - 0.512 M)/(22 s-0 s)
= -1/2 (- 0.018)/22
= 0.00041 M/s
Therefore, the average rate of the reaction during this time interval. is 0.00041 M/s.
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Complete question:
Consider the reaction 2 hbr (g) à h2 (g) + br2 (g)
a. express the rate of the reaction in terms of the change in concentration of each of the reactants and products.
b. in the first 22.0 s of this reaction, the concentration of hbr dropped from 0.530 m to 0.512 m . calculate the average rate of the reaction in this time interval.
how many ml of 0.656 m hno3 are needed to dissolve 6.31 g of baco3? 2hno3(aq) baco3(s) ba(no3)2(aq) h2o(l) co2(g)
We need 140 mL of 0.656 M HNO3 to dissolve 6.31 g of BaCO3.
To solve this problem, we need to use stoichiometry and the balanced chemical equation for the reaction between nitric acid (HNO3) and barium carbonate (BaCO3).
The balanced equation is:
2HNO3(aq) + BaCO3(s) → Ba(NO3)2(aq) + H2O(l) + CO2(g)
From this equation, we can see that 2 moles of HNO3 react with 1 mole of BaCO3. We can use this information to calculate the number of moles of HNO3 needed to react with 6.31 g of BaCO3.
First, we need to calculate the number of moles of BaCO3:
molar mass of BaCO3 = 137.33 g/mol
moles of BaCO3 = mass / molar mass = 6.31 g / 137.33 g/mol ≈ 0.046 mol
Since 2 moles of HNO3 react with 1 mole of BaCO3, we need 2 x 0.046 = 0.092 moles of HNO3.
Now we can use the molarity of the HNO3 solution to calculate the volume needed:
Molarity = moles of solute / volume of solution (in liters)
0.656 M = 0.092 mol / volume of HNO3 solution (in liters)
Solving for volume of HNO3 solution, we get:
volume of HNO3 solution = 0.092 mol / 0.656 M = 0.140 L = 140 mL
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e) as the reaction occurs at constant temperature, does the pressure inside the container increase, decrease, or remain the same? explain.
As the reaction occurs at constant temperature, the pressure inside the container remain the same.
What is pressure?Pressure is defined as the force was applied perpendicular to an object's surface per unit area across which that force is dispersed. 445 Gauge pressure indicates the pressure in relation to the surrounding atmosphere.
Pressure is expressed using a variety of units. Some of these stem from a unit of forces exerted by an area unit. the Si derived unit of pressure, this same pascal (Pa), for instance, becomes a newton every square metre (N/m²).
P×V = n×R×T
As the reaction occurs at constant temperature, the pressure inside the container remain the same.
Therefore, as the reaction occurs at constant temperature, the pressure inside the container remain the same.
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what is the relationship between the temperature speed and kinetic energy of gas molecules?
There is a direct relationship between temperature, speed, and kinetic energy of gas molecules is as the temperature increases, so does the average speed and kinetic energy of the gas molecules.
The temperature, speed, and kinetic energy of gas molecules are related to each other through the gas laws and the concept of ideal gases. According to the ideal gas law, the pressure, volume, and temperature of a gas are proportional to each other, and are directly proportional to the average kinetic energy of the gas molecules. This means that as the temperature of a gas increases, the average kinetic energy of its molecules also increases.
The relationship between temperature, speed, and kinetic energy can also be understood through the concept of random motion. Gas molecules are in constant random motion, bouncing off of each other and the walls of their container. The average kinetic energy of these molecules is directly proportional to the temperature of the gas. As the temperature of the gas increases, the average speed of its molecules also increases, and thus, so does their kinetic energy.
In mathematical terms, the average kinetic energy of a gas molecule can be represented as:
KE = (3/2)kT
where KE is the average kinetic energy, k is the Boltzmann constant, and T is the temperature in Kelvin.
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Why does it take a lot of energy for water to boil?
Water has weak bonds inside of the molecule.
Water has strong intermolecular forces (Hydrogen bonding)
Water has weak intermolecular forces (Dispersion forces)
Water has strong bonds inside of the molecule
The reason is because, water has strong intermolecular forces (Hydrogen bonding)
What is Hydrogen bonding?A hydrogen bond is an attraction that is mostly electrostatic between an electronegative atom with a lone pair of electrons and an electronegative atom that is covalently attached to a more electronegative "donor" atom or group.
Intermolecular hydrogen bonding and intramolecular hydrogen bonding are the two main types of hydrogen bonds. Most often, distinct molecules with either the same or different substances form intermolecular hydrogen bonds.
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20 cm³ of carbon monoxide are reacted with 10 cm³ of oxygen. The equation for the reaction is
shown
2CO (g) + O₂(g) → 2CO₂ (g)
What volume of carbon dioxide is produced?
Answer: 20.16cm³ of CO₂ produced
Explanation: the equation for the reaction between carbon monoxide (CO) and oxygen (O2) is:
2CO (g) + O₂ (g) → 2CO₂ (g)
Given that 20 cm³ of carbon monoxide is reacted with 10 cm³ of oxygen. From the equation,
we can see that two molecules of CO react with one molecule of O₂to produce two molecules of CO₂
Since we have 20 cm³ of CO and 10 cm³ of O₂, we can calculate the number of moles of CO and O₂ as follows:
CO: 20 cm³ x (1 mole / 22.4 cm³) = 0.89 moles
O₂: 10 cm³ x (1 mole / 22.4 cm³) = 0.45 moles
Since two molecules of CO react with one molecule of O₂, the number of moles of O₂ is half the number of moles of CO. Since we have 0.45 moles of O₂, we can calculate the number of moles of CO₂ produced as follows:
0.45 moles x 2 = 0.9 moles
Finally, to find the volume of CO₂ produced, we can multiply the number of moles of CO₂ by the volume occupied by one mole of CO₂:
0.9 moles x 22.4 cm³/mole = 20.16 cm³
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name one cleaning compound you commonly used at home. Why do you use it commonly?
Answer:
Chlorine
Explanation:
Because this will remove dirt and stain and it will kill microorganisms that can cause diseases.
calculate the ph of a buffer solution made from equal amounts of 0.3 m hydrofluoric acid and 0.7 m sodium fluoride
A buffer solution with a pH of 4 is created by mixing 0.3 m hydrofluoric acid and 0.7 m sodium fluoride in equal parts.
To calculate the number of moles of HF and F-,
moles HF = molarity * volume
= 0.3 * 1 L = 0.3 moles
moles F- = molarity * volume
= 0.7 m * 1L = 0.7 moles
by using the ICE table :
HF(aq) + NaOH(aq) → NaF(aq) + H2O(l)
initial 0.3 0 0.7
change -0.08 0.08 + 0.08
Equ (0.3 - 0.08) (0.7+0.08)
∴ [HF] = 0.3 - 0.08 = 0.22 m
∴[F-] = 0.7 + 0.08 = 0.78 m
when we have Ka for HF = 3.5 x 10⁻⁴
∴Pka = - ㏒ Ka
= - ㏒ (3.5x10⁻⁴)
= 3.46
by using the PH formula :
PH = Pka + ㏒[F-]/[HF]
by substitution:
∴PH = 3.46 + ㏒( 0.78 / 0.22)
∴PH = 4
first, we have to get moles of HF & F-
moles HF = molarity * volume
= 0.3 * 1 L = 0.3 moles
moles F- = molarity * volume
= 0.7 m * 1L = 0.7 moles
by using the ICE table :
HF(aq) + NaOH(aq) → NaF(aq) + H2O(l)
initial 0.3 0 0.7
change - 0.08 0.08 + 0.08
Equ (0.3 - 0.08) (0.7+0.08)
∴ [HF] = 0.3 - 0.08 = 0.22 m
∴[F-] = 0.7 + 0.08 = 0.78 m
when we have Ka for HF = 3.5 x 10 ⁻⁴
∴Pka = - ㏒ Ka
= - ㏒ (3.5x10⁻⁴)
= 3.46
by using the PH formula :
PH = Pka + ㏒[F-]/[HF]
by substitution:
∴PH = 3.46 + ㏒( 0.78 / 0.22)
∴it is the buffer solution PH = 4
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Which of the following is a catastrophic event that can impact a human settlement?
a. volcanic eruption
b. soil depletion
c. dwindling water supply
d. none of these
volcanic eruption is the catastrophic event that impacts the human settlement as compared to the other options.
What are Catastrophic events?Catastrophic events are sudden, natural or man-made, situations where change & destruction occur. All catastrophic events are the Earth's way of maintaining equilibrium during change.
Natural disasters are catastrophic events with atmospheric, geological, and hydrological origins (e.g., droughts, earthquakes, floods, hurricanes, landslides) that can cause fatalities, property damage and social environmental disruption.
Natural disasters like soil depletion also take a period of time. Dwindling water supply is also itself an alarm before scarcity of water begins.
so we can conclude that option a is the correct option among the given options.
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How many grams of HCI are produced by the reaction of 64.9 grams
of CH4?
According to the stoichiometry of the chemical reaction between HCl and methane 600.32 g of HCI are produced by the reaction of 64.9 grams of methane.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
In the given chemical reaction, 16 g methane gives 148 g HCl , thus, 64.9 g of methane will give 64.9×148/16= 600.32 g.
Thus, 600.32 g of HCI are produced by the reaction of 64.9 grams of methane.
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which one of the following pairs of molecules would you expect to have the higher melting point? a. cl2 or br2 b. c4h10 or c5h12 c. nh3 or ph3 d. na or mg e. beo or kcl f. icl or br2
BeO or KCl will have a higher melting point than any other pair given above in the question.
The pair of molecules that would have the higher melting point would be e. BeO and KCl. BeO has a higher molecular weight and is more covalently bonded, which makes it more stable and more difficult to break the intermolecular forces. This makes it have a higher melting point than KCl, which is held together by ionic bonds, which are relatively weaker and easier to break.
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What’s the answers to this quiz?
Antimony is an element having atomic number 51 and mass number 121.76 u. It has 51 number of proton and electrons.
Phosphorus is an element having the atomic number 15. It has 15 protons, electrons, and 16 neutrons.
The symbol of magnesium is Mg whereas the symbol of cobalt in Co.
The two subatomic particles present in the nucleus are the proton and neutron. They are collectively called nucleons. The proton has a positive charge, the electron has a negative charge whereas the neutron has no charge.
Where are protons neutrons and electrons?Protons and neutrons are accordingly called nucleons since they are in the nucleus of the atom. electrons are a type of subatomic speck with a negative charge. Protons are a type of subatomic particle with a positive charge.
Neutrons, further with protons, are subatomic particles found inside the nucleus of every atom. Neutrons have an impartial electric charge (neither negative nor positive) and have rather more mass than positively charged protons.
So we can conclude that Unlike protons and neutrons, which are detected inside the nucleus at the center of the atom, electrons are initiated outside the nucleus.
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The most abundant minerals on Earth belong to the chemical group termed the a) Silicates b) Carbonates c) Halides d) Oxides
The Silicates are a class of chemicals that includes the most prevalent minerals on Earth.
What is the mineral group that is most prevalent on Earth?Over 90% of the crust of the Earth is made up of the roughly 1,000 silicate minerals. The largest mineral group by far is the silicate family. The two silicate minerals that are most prevalent are feldspar and quartz. Both minerals are very widespread rock-forming minerals.
Why are silicates the minerals that are most common on Earth?Silicate minerals are exceptionally stable and prevalent in crustal rocks and sediments because oxygen and silicon are the two most plentiful elements in the Earth's crust and because the (SiO4) tetrahedron is such a stable complex. They predominate in numerous sedimentary rocks as well as igneous and metamorphic rocks.
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suppose we have two identical boxes of matter, a and b, that are in thermal contact but cannot exchange materials. they come to thermal equilibrium. system 1 consists of box a alone, while system 2 consists of both boxes a and b. what can you say about the entropy of the two systems?
The entropy of system 1, consisting of box A alone, will remain constant, while the entropy of system 2, consisting of both boxes A and B, will be greater due to the increase in the number of available microstates.
When two identical boxes of matter, A and B, are in thermal contact but cannot exchange materials, they will eventually come to thermal equilibrium. At thermal equilibrium, the two boxes will have the same temperature, and their individual entropies will be equal.
If we consider system 1, which consists of box A alone, its entropy will remain constant as it is an isolated system. However, if we consider system 2, which consists of both boxes A and B, the total entropy of the system will increase because there are now more ways for energy to be distributed between the two boxes. In other words, the addition of box B provides more microstates or configurations for the system to occupy, and hence the entropy of the combined system will be greater than that of system 1.
Therefore, we can say that the entropy of system 2, consisting of both boxes A and B, will be greater than the entropy of system 1, consisting of box A alone, as a result of the greater number of available microstates in system 2. This increase in entropy is a manifestation of the second law of thermodynamics, which states that the entropy of an isolated system will always tend to increase over time.
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if 18.1 ml of 0.800 m hcl solution are needed to neutralize 5.00 ml of a household ammonia solution, what is the molar concentration of the ammonia?
If 18.1 ml of 0.800 m hcl solution are needed to neutralize 5.00 ml of a household ammonia solution, The molar concentration of the ammonia solution is 2.88 M.
Molar attention is the most effective way of describing a solute attention in a result. Molarity is described as the total number of intelligencers of solute dissolved in per liter of result, i.e., M = spook/ L. All intelligencers measures are applied to determine the volume of intelligencers in the result that's the molar attention.
Chemical equation
HCl + NH3 ------> NH4Cl
First of calculate the moles of HCl
mole of HCl = Molarity × Vol (L)
mole of HCl = 0.800× 0.018 = 0.014 mole
As the in balance chemical, moles of HCl and NH3 are equal
so
moles of NH3= 0.014
Molarity of NH3 = moles ÷ V(L) = 0.014/0.005 = 2.88 M
Result:
The molarity of ammonia will be 2.88 M.
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X
Find the value of x.
30°
135°
x = [?]°
The value of x in the figure is
55 degrees What is an angle?An angle is a geometric figure formed by two rays or line segments that share a common endpoint. This common endpoint is called the vertex of the angle, and the two rays or line segments that form the angle are called its sides.
Angles are measured in degrees, and a full circle contains 360 degrees. Angles can be classified based on their measure. A right angle measures exactly 90 degrees, an acute angle measures less than 90 degrees, and an obtuse angle measures more than 90 degrees but less than 180 degrees.
The figure consist of angel which is an acute angle, an acute angle are angles less than 90 hence 55 is the possible value
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1 point
Blaise divides 29.615 by 6.09. What is the answer with the correct number for sig figs.
Type your answer...
The value of the expression 29.615 / 6.09 using the division property will be 4.863.
What is Algebra?Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and precisely.
The numbers are given below.
29.615 and 6.09
Then the division between the numbers 29.615 and 6.09 will be given by putting a division sign between them. Then we have
⇒ 29.615 / 6.09
⇒ 4.863
The value of the expression 29.615 / 6.09 using the division property will be 4.863.
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Given the following occasion 4p+5O2-> 2P2O5. How many moles of P2O5 are formed from 3.4moles of O2
Answer:
3.4 (2/5) (sorry i dont have a calculator )
Explanation:
3.4 moles of O2 x (2 moles of P2O5/5 moles of O2)
= 3.4 (2/5)
which of the gases has the fastest‑moving molecules, on average, at a given temperature?
HBr
NO2
C2H6
They all have same average speed
among the three gases listed, NO2 would have the fastest-moving molecules on average at a given temperature.
According to the kinetic theory of gases, the average kinetic energy of gas molecules is proportional to their absolute temperature. At a given temperature, gases with lighter molecules will have higher average speeds compared to gases with heavier molecules. This is because the lighter molecules have less mass and therefore can move more quickly for a given amount of kinetic energy. Therefore, among the three gases listed, NO2 would have the fastest-moving molecules on average at a given temperature. This is because NO2 has the lowest molecular weight (46 g/mol) compared to HBr (81 g/mol) and C2H6 (30 g/mol). The faster movement of NO2 molecules is reflected in their higher root-mean-square speed, which is a measure of the average speed of gas molecules in a sample. However, it is important to note that the average speed of gas molecules can vary depending on factors such as temperature, pressure, and the specific conditions of the gas sample.
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How could you modify this simulation to demonstrate that different isotopes have different half lives
The simulation can be modified to demonstrate different isotopes have different half lives by [tex]-\frac{d[A]}{dt} = k[A]^n[/tex]
Partial life is a partial life because it's defined this way. stay lower than that, and the decay will take out lower than partial tittles; stay more, and it'll take out further than half.
The partial life is used as a accessible measure because a sample of isotopes decays exponentially with time. Each snippet has the same chance of decaying in a fixed time interval and this leads to an exponential decay. All tittles bear the same way and continue to decay until all have been changed, whether this takes glories or seconds.
You can just as fluently define a" one- third" life, a" quarter- life". Radioactive isotopes decay exponentially; half- life is just accessible measure that captures the kinetics of the decay.
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Rank the following aqueous solutions from lowest predicted boiling point to highest: In the case of solutions containing aqueous ions, assume there is no ion clustering in the solution: 167 mCH_OH0.530 mNazSO4 0.475 mKaPO40.907 mKBr0.722 mNHANO3
From highest to lowest, the following aqueous solutions are: 0.475 m K3PO4 (highest), 0.907 m KBR, 1.67 m CH3OH, 0.530 m NA2SO4, and 0.722 m NH4NO3 (lowest).
The boiling point of a salt solution rises as the boiling point does. A Rhizob provides the majority of eubacterial antibiotics. As can be seen from the concentration figures, methanol has the lowest concentration. Methanol will have the lowest boiling point as a result. The solution of 0.10 M SrCl2 in 300.0 mL contains the most ions as a result. Therefore, 1.0 MNa2SO4 has the maximum boiling point value. The most highly vaporized substance is 1-chloropentane. Because of its boiling point's "propto 1/("branching")," tert-butyl alcohol has the lowest boiling point. Surface area decreases with increasing branching.
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You want to determine the molar concentration of a solution that contains 225 g FeCl2 in a total volume of 450 mL.
How many moles of CaCl2 are in the solution? FeCl2; 126.75 g/mol [?] mol FeCl2
Molar concentration of the FeCl2 solution is calculated as 3.947 M.
What is meant by molar concentration of solution?Molar concentration of the solution is defined as number of moles of solute per liter of solution.
Given, mass of FeCl2 = 225 g and molar mass of FeCl2 = 126.75 g/mol
So, moles of FeCl2 = mass of FeCl2 / molar mass of FeCl2
= 225 g / 126.75 g/mol
= 1.776 moles
Given, volume of the solution is 450 mL, or 0.45 L,
the molar concentration can be calculated by:
molar concentration = moles of FeCl2 / volume of solution
= 1.776 moles / 0.45 L
= 3.947 M
So the molar concentration of the FeCl2 solution is 3.947 M.
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Answer:
1.777
Explanation:
To determine the number of moles of FeCl2 in the solution, we need to first convert the given mass of FeCl2 to moles using its molar mass.
Number of moles = Mass / Molar mass
Mass of FeCl2 = 225 g
Molar mass of FeCl2 = 126.75 g/mol
Number of moles of FeCl2 = 225 g / 126.75 g/mol = 1.777 moles
Therefore, the solution contains 1.777 moles of FeCl2.
why is carbon so special ?
Carbon is special because it is the basis of all known life on Earth. It is the key element in organic compounds, which are the building blocks of life.
Why carbon is special?Carbon has the ability to form a vast number of chemical compounds, more than any other element, with almost ten million compounds described to date. This is due to its unique ability to form strong bonds with other elements, including other carbon atoms. This property allows carbon to form long chains and rings, which are the basis of many organic compounds.
Additionally, carbon is a key component of many important biological molecules, such as DNA, proteins, and carbohydrates. In short, carbon is special because it is essential to life as we know it.
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What characteristics would show that this cat and kitten are related? Support your answer by explaining two inherited characteristics.
(Related like they are family)
Answer:
Being young, kittens can also be called “cubs” although the name “kitten” is more commonly used. Most consider cats as kittens if they are still less than one year of age. However, some vets say that a kitten can already be considered a cat when it reaches eight or nine months.
Or could also use:
Specie and stripes
1. A cat and it’s litter can’t be related without the producer which in this case is the mother
2. The stripes shows that the two are related and yeah you can have to cats that have the same stripes but that’s not likely, every-time any two cats with stripes are put together the cats show similarities but that doesn’t tell us that their related. Every cat has similar stripes but there is something that’s always gonna be off with the stripes whether the stripes have the same color or the stripes have the same arrangement on the cat. Like people cats have similar traits but that doesn’t mean there related (ex: two blue eyed people, that’s doesn’t prove that their related in any type of way).
Explanation:
Answer:
Inherited characteristics that show that a cat and kitten are related include physical traits such as fur pattern and color, eye shape, and body type. Another example is behavioral traits such as playfulness and social behavior. These traits are passed down from parent to offspring through genes and provide evidence of a familial relationship.
Explanation:
Question
In the diagram, which letter represent the transition from solid to liquid?
Responses
A. A
B. B
C. C
D. D
The letter represent the transition from solid to liquid E. E.
What is the transition ?Transition is a process of change from one state or condition to another. It is a fundamental element of life, as it allows us to move forward, adapt, and develop. Transition can be physical, emotional, spiritual, or even intellectual. It can involve a change in environment, relationships, beliefs, roles, or responsibilities. Transition can be gradual, or it can happen suddenly. It can be difficult and require a lot of effort, or it can be relatively easy. Transition can be a positive experience, or it can be a difficult experience. Regardless of the form it takes, transition is a necessary part of life and growth.
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the molecular weight of hemoglobin is about 65,000 g/mol. hemoglobin contains 0.35% fe by mass. how many iron atoms are in a hemoglobin molecule?
there are approximately 4.069 x [tex]10^{23}[/tex] iron atoms in a hemoglobin molecule.
The number of iron atoms in a hemoglobin molecule can be calculated as follows:
First, determine the mass of iron in a single hemoglobin molecule:
mass of iron = 0.35% * 65,000 g/mol = 227.5 g/mol
Next, convert the mass of iron to the number of iron atoms by dividing by the atomic mass of iron:
1 iron atom = 55.845 g/mol
number of iron atoms = 227.5 g/mol / 55.845 g/mol/atom = 4.069 x [tex]10^{23}[/tex]iron atoms/mol
So there are approximately 4.069 x [tex]10^{23}[/tex] iron atoms in a single hemoglobin molecule.
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determine the mass in grams of hydrogen atoms in a sample of butanol, C4H9OH, containing 3.01 x 10^23 molecules
a) 2.02
b) 5.05
c) 10.1
d) 0.505
The mass in grams of hydrogen atoms in a sample of butanol, C4H9OH, containing 3.01 x 10^23 molecules is approximately 5.05 grams
How to calculate?The mass of the hydrogen atoms in one molecule of butanol is 9 atomic mass units * 1 atomic mass unit/atom = 9 atomic mass units.
We have the sample contains 3.01 x 10^23 molecules, then the total mass of the hydrogen atoms in the sample is:
9 atomic mass units/molecule * 3.01 x 10^23 molecules
= 27.09 x 10^23 atomic mass units
We then convert the atomic mass units to grams we have:
27.09 x 10^23 atomic mass units * (1 gram/6.022 x 10^23 atomic mass units) = 4.51 grams approximately 5.05 grams
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how would your calculated value for the molecular weight of your unknown been affected if a small quantity of the unknown stuck to the metal stirring rod and failed to dissolve in the benzophenone?
To calculate the value for the molecular weight of your unknown been affected if a small quantity of the unknown stuck to the metal stirring rod and failed to dissolve in the benzophenone following is the process:
Your mass of counted solute added to the detergent would be lower than the recorded value performing in a lower temperature change grounded on mass of solute. A lower temperature change will affect in a lower number of calculated intelligencers of solute present. This will give a advanced molar mass for your unknown compared to the real molar mass( lower number of intelligencers divided into the mass of solute gives a larger molar mass).
These two scenarios are predicated on a solute-solvent mixture's lower freezing-point (or melting-point) as compared to pure solvent. A nonelectrolyte solute's equation is:
ΔTf = Kfm
Kf is the solvent's specific molal freezing-point depression constant, and m is the molality of the solution mixture.
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if the rate of a reaction is four times as fast when the concentration of a reactant is doubled, what is the order of the reaction with respect to that reactant?
The order of reaction is 1/2 with respect to that reactant when the concentration of a reactant is doubled.
Rate of reaction =k[A] ⁿ where n is the order of reaction
=>r₁=k[A₁]ⁿ-----(eq1)
=>r₂=k[A₂]ⁿ-------(eq2)
Dividing eq2 with eq1
=>r₂/r₁=[A₂]ⁿ / [A₁]ⁿ
=>2/1 = [4/1]ⁿ
=>4ⁿ=2
=>n=1/2
The order of reaction is characterized as the power reliance of the rate on the centralization of every reactant.
When the rate law of a reaction is resolved a similar regulation can be utilized to totally figure out the creation of the response combination. At the end of the day, the reaction request is the type to which the convergence of the particular species is raised, and it shows to what level the centralization of the species influences the pace of reaction. It likewise demonstrates up to which degree the species makes an extensive difference. For instance, the pace of a first order of reaction is resolved simply by the convergence of one animal types in the reaction.
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how would increasing the molarity of cuso4 affect this reaction?
The molarity of CuSO₄ affect this reaction as the Molarity of the solution increasing would decrease the mass able to be recovered.
Molarity of a given result is defined as the total number of intelligencers of solute per litre of result. The molality of a result is dependent on the changes in physical parcels of the system similar as pressure and temperature as unlike mass, the volume of the system changes with the change in physical conditions of the system.
Molarity is represented by M, which is nominated as molar. One molar is the molarity of a result where one gram of solute is dissolved in a litre of result. As we know, in a result, the detergent and solute mixture to form a result, hence, the total volume of the result is taken.
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Complete question:
How would increasing the molarity of CuSO4 affect this reaction? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.
a The Molarity of the solution would have no effect on the reaction
b The Molarity of the solution increasing would decrease the mass able to be recovered
с The molarity of the solution determines the mass of copper available for reaction and so the possible mass of copper that could accumulate on the zinc pellets would increase.
d Not enough information is given to determine the effect of increasing the concentration of the CuSO4
Use the periodic table to determine the electron configuration for Br and Y in noble-gas notation.
Br:
[He]2s22p63s23p5
[Ne]3s23p4
[Ar]4s24p5
[Ne]3s23p5
[Ar]4s24p5 is the electron configuration for Br and Y in noble-gas notation on Using the periodic table.
Bromine (Br) is a chemical element with atomic number 35, which means it has 35 electrons. To determine its electron configuration in noble-gas notation, we first need to locate the nearest noble gas, which is helium (He) with 2 electrons. From there, we can write the electron configuration for Br by adding electrons in the order of increasing energy levels. Starting from the He configuration, we add the electrons for the next energy levels: 2s2, 2p6, 3s2, and 3p6. Finally, we add the remaining 5 electrons in the 4th energy level, giving us the noble-gas notation [Ar]4s24p5 for Br. Yttrium (Y), on the other hand, is a metal element with atomic number 39, which means it has 39 electrons. To determine its noble-gas electron configuration, we need to find the noble gas that comes before it in the periodic table, which is argon (Ar) with 18 electrons. Starting from the Ar configuration, we add electrons for the next energy levels: 4s2 and 3d1. This gives us the noble-gas notation [Kr]5s24d1 for Y. Note that the 5s2 electron configuration in the Kr notation is equivalent to the 4s2 electron configuration in the Ar notation, as they both occupy the same energy level. Overall, the noble-gas notation is a way of representing the electron configuration of an atom using the electron configuration of a noble gas, which is usually the closest gas that has a completely filled inner electron shell. It is a useful shorthand notation that makes it easier to compare and understand the electron configurations of different atoms.
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