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3 years ago

Which coefficient will balance the following equation ____ Ca + N2 → Ca3N2

Chemistry

1 answer:

MaRussiya [10]3 years ago

7 0

Answer:

B) 3

Explanation:

3Ca+ N2 → Ca3N2

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Be sure to answer all parts. Propane (C3H8) is a minor component of natural gas and is used in domestic cooking and heating. (a)

Leokris [45]

Answer:

For a: The balanced chemical equation is given below.

For b: The mass of carbon dioxide produced will be $1.07\times 10^3g$

Explanation:

For a:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor can be destroyed but it can only be transformed from one form to another form.

This law also states that the total number of individual atoms on the reactant side must be equal to the total number of individual atoms on the product side.

For the given reaction, the balance chemical equation follows:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)$

All the substances are present in gaseous state.

For b:

By Stoichiometry of the reaction:

1 mole of propane gas produces 3 moles of carbon dioxide gas.

So, 8.11 moles of propane gas will produce = $\frac{3}{1}\times 8.11=24.33mol$ of carbon dioxide gas.

Now, calculating the mass of carbon dioxide using equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of carbon dioxide = 44 g/mol

Moles of carbon dioxide = 24.33 mol

Putting values in above equation, we get:

$24.33mol=\frac{\text{Mass of carbon dioxide}}{44g/mol}\\\\\text{Mass of carbon dioxide}=1070.52g$

Hence, the amount of $CO_2$ produced in the given reaction and expressed in scientific notation is $1.07\times 10^3g$

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4 years ago

The tendency of water molecules to stick together is referred to as ______. A) adhesion B) polarity C) cohesion D) transpiration

irina [24]

Answer:

Cohesion

Explanation:

Think of it like this. The water molecules STICK TOGETHER, so they COoperate.

COhesion COoperate

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3 years ago

2. Zn + HCI. ZnCl2 + H2 what reaction is this

steposvetlana [31]

Answer: Type of Chemical Reaction: For this reaction we have a combination reaction. Balancing Strategies: When we add zinc to hydrochloric acid we end up with zinc chloride, a salt, and hydrogen gas. This reaction is actually a good way to make hydrogen gas in the lab.

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3 years ago

Neon in a piston is compressed to a volume of 14L its original volume was 22 L at 11.2 atm find the new pressure in atm

Jobisdone [24]

I love chem!!! Hopefully I got it right for u I got

In the calculator: 7.127272727

But if u need it in sig figs: 7.1atm

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3 years ago

What is the tissue through which water and minerals move up a plan?

Angelina_Jolie [31]

It's easy , Xylem Tissue

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3 years ago