How many moles are there in 3.612 x 1024 molecules of CaO?

Based on the effect of temperature on a reaction, a change in temperature affects the rate constant K.

Based on the Arrhenius equation, the y-intercept gives the value of ln A.

From the value of the slope, the value of Ea is 42.1 J/mol.

A change in the temperature of a reaction acts to increase the rate of reaction.

According to the Arrhenius equation, the y-intercept gives the value of ln A.

From the graph; slope = -Ea/R

Ea = -slope/R

Where;

Ea = -(-350)/8.314

Ea = 42.1 J/mol

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The mass of Zr deposited in the process is 41.4 g.

An electrolytic cell is a chemical cell which produces electrical energy by non-spontaneous chemical processes.

From the question;

Zr^4+(aq) + 4e ------> Zr(s)

We know that;

91 g of Zr is deposited by 4(96500) C

xg of Zr is deposited by (7.92 × 6.16 × 60 × 60) C

xg = 91 g ×  (7.92 × 6.16 × 60 × 60) C/4(96500) C

x g = 41.4 g

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The mass percentage of the solution that we have in the question is  5 g.

Percent w/w (weight/weight) concentration is a way to express the concentration of a solute in a solution as a percentage by mass. It represents the mass of the solute in grams per 100 grams of the solution.

Percent w/w concentration is commonly used in industries such as pharmaceuticals, food and beverage, and cosmetics to measure the concentration of active ingredients or additives in their products.

We know that;

%w/w = weight of the solute/Weight of the solution

Let the weight of the solute be x

1 = x/500 * 100/1

1 = 100x/500

500 = 100x

x = 5 g

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The partial pressure of the remaining gas that was not measured is 0.8 atm.

This is the individual pressure exacted by each gas in the containing vessel. This partial pressure of individual gases make up the total pressure.

Pt = P₁ + P₂ + P₃ + P₄

5 = 1.2 + 2 + 1 + P₄

5 = 4.2 + P₄

P₄ = 5 - 4.2

P₄ = 0.8 atm

Thus, the partial pressure of the remaining gas that was not measured is 0.8 atm.

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volume of Ni = 25 nL = 25 x 10⁻⁹ L

mol Ni = 25 x 10⁻⁹ L x 1.25 mol/L = 3.125 x 10⁻⁸

mass = mol x Ar Ni

mass = 3.125 x 10⁻⁸ x 59 g/mol

mass = 1.84 x 10⁻⁶ g = 1.84 μg

Answer:

Explanation:

"25.00 nanoliters of a 1.25 mol/L solution" contains

25.00*10^(-9) L * 1.25 mol/L

= 31.25*10^(-9) mol of Ni

Molar mass of Ni is 58.69 g/mol

So 31.25*10^(-9) mol of Ni

= 31.25*10^(-9) * 58.69 g

= 1834.06*10(-9) g

= 1.834*10(-6) g

= 1.834 ug of Ni

Answer:

Molarity of solution = 0.727M

Explanation:

Molarity of solution is defined as moles solute per Liter of solution. For the posted problem use M = n/V where n = moles of solute and V = Liters of solution. That is ...

n = 58.9g/180.16g·mole⁻¹ = 0.327 mole (3 sig. figs.)

V = 450.0ml/1000ml·L⁻¹ = 0.450L (3 sig. figs.)

∴ Molarity = n/V = 0.327mole/0.450L = 0.727mol/L = 0.727M

is a disturbance which travel through a medium that enables energy to be transferred from one point to another

Explanation:

Sunlight

Wind

Plants

Those option are an example

of a renewable source

Answer:

1.25 moles

Explanation:

You have 2.5 moles of Cl on product side and you need to make that equal on the reactant side. You can see it is Cl2  so you need to half 2.5 by 2 so both sides are equal. 2.5/2=1.25

The mass of carbon dioxide that would be produced by the complete combustion of 2.05 moles of sucrose is 1,082.4 g.

The complete combustion of sucrose in excess oxygen is given as follows;

C₁₂H₂₂O₁₁(s) + O₂(g) → CO₂(g) + H₂O(l)

balanced chemical equation is below;

C₁₂H₂₂O₁₁(s) + 12O₂(g) → 12CO₂(g) + 11H₂O(l)

from the reaction above;

1 mole of sucrose ----------> 12 mole of carbon dioxide

2.05 mole of sucrose ------> ?

= 2.05 x 12

= 24.6 moles

1 mole of carbon dioxide = 44 g/mole

24.6 moles = ?

= 24.6 x 44

= 1,082.4 g

Thus, the mass of carbon dioxide that would be produced by the complete combustion of 2.05 moles of sucrose is 1,082.4 g.

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The temperature of the container containing the 4.47 g of Ar is 358.16 K

Mole = mass / molar mass

Mole of Ar = 4.47 / 40

Mole of Ar = 0.11175 mole

The temperature of the container can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by nR

T = PV / nR

T = (1.24 × 2.65) / (0.11175 × 0.0821)

T = 358.16 K

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It is true

I hope it's help u

Answer:

The answer is True.

Answer:

Exponential

Explanation:

Exponential means of an increase or becoming more and more rapid

Answer:

A molecule that has only nonpolar bonds and no polar bonds cannot be polar.

Explanation:

However, a molecule that CONTAINS nonpolar bonds is different, because it can contain polar bonds. A molecule that contains nonpolar bonds can be polar as long as it also contains polar bonds.

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Answer:

yes is it is because of the chemical reciation

Explanation:

m

Answer:

Yes this was because of reversable reactions, they added more drops of HCI and KOH which is the steps before they had added less.

Explanation:

Competition as the owl and snakes are both preying on the mice in a forest so they are both competing for the food source of mice.

Animals that are carnivores (and some omnivores) must hunt their food. These hunters are called predators, and the animals or insects they hunt are called prey.

Owls are an example of predator organisms. They feed on smaller organisms such as mice. The mice, therefore, serve as prey for the owls.

Hence, competition as the owl and snakes are both preying on the mice in a forest so they are both competing for the food source of mice.

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Answer:

By revive, I assume you're talking about medical assistance.

Explanation:

You can use CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us.

If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.

*yes the person below copy/pasted my thingy. yes its funny.

Answer: i don't  even know what you said but i think you said this,

CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us,

If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.

Hope this helps :)

Answer:

1 mole Oxygen = 2 mole hydrogen0.21 mol oxygen = 0.54 mol hydrogenMass of hydrogen = moles  molecularweight

Mass of hydrogen = 0.54  2 Mass of hydrogen = 1.08 grams.

Thus, for reacting with 8.75 grams of oxygen,

1.08 grams of hydrogen is required.

Explanation:

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Answer:

they are:-

venturi meter.

orfice plate.

Dall tube .

pitot tube.

Averaging pitot tube .

cone meter.

linear resis meter.

Answer:

Boyle's law states that the volume of a fixed mass of agass at constant temperature is inversely proportional to its pressure

1. Calcium hydrogen phosphate

2. Iron(II) Hydrogen Sulfate

3. Calcium hydroxide

4. Aluminum chloride hydroxide

For one gram atomic weight of oxygen with atomic weight of 16 grams, one mole of oxygen also contains 6.022 × 1023 oxygen atoms.

Explanation:

Hope it help....

Taking into account the reaction stoichiometry, 90.33 grams of SO₂ are formed when 124 grams of iron(II) sulfide are used.

In first place, the balanced reaction is:

4 FeS + 7 O₂ → 2 Fe₂O₃ + 4 SO₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 351.4 grams of FeS form 256 grams of SO₂, 124 grams of FeS form how much mass of SO₂?

[tex]mass of SO_{2} =\frac{124 grams of FeSx256 grams ofSO_{2}}{351.4 grams of FeS}[/tex]

mass of SO₂= 90.33 grams

Then, 90.33 grams of SO₂ are formed when 124 grams of iron(II) sulfide are used.

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Answer:

C.) Argon

Explanation:

This is because ionisation energy increases as we move from left to right in a period. Argon presents in the right most column and Argon is a novel gas and has 8 electrons in outermost orbital. So, it is highly stable. I hope I helped! ^-^

We study gas since reformation in order to

Below are some few gas properties:

Gas reformation is defined production process which builds upon the existing natural gas.

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Answer:A fundamental difference is that physics is more focused to finding the universal laws of general processes, whereas chemistry focuses more on details and specific phenomena, such as what is the boiling point of this substance and why.

Explanation: hope it help

Answer:

ok im eating chips :)

Explanation:

The fumes being released are almost certainly chlorine, which as you have observed, is quite hazardous. Bleach usually contains strong warnings not to mix with any other cleaning chemical, as some of them will tend to rapidly decompose its active ingredient and release a lot of gaseous chlorine