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hjlf
4 years ago
7

Ideal gases have _______ molecular volume

Chemistry
1 answer:
cricket20 [7]4 years ago
6 0
Molar volume of gases
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N2+3H2—> 2NH3 What volume of NH3 at STP is produced if 25.0g of N2 is reacted with an excess of H2 ?
Butoxors [25]

Answer:

The answer to your question is 40 L of NH₃

Explanation:

Data

Volume of NH₃ = x

mass of N₂ = 25 g

mass of H₂ = excess

Balanced chemical reaction

                     N₂  +  3H₂   ⇒  2NH₃

Process

1.- Find the molar mass of N₂ and NH₃

N₂ = 14 x 2 = 28g

2NH₃ = 2[ 14 + 3] = 34 g

2.- Write a proportion to solve this problem

                    28 g of N₂ --------------- 34 g of NH₃

                     25 g of N₂ -------------   x

                     x = (25 x 34)/28

                     x = 30.36 g of NH₃

3.- Calculate the volume of NH₃

                     17 g of NH₃ -------------- 22.4 L

                     30.36 g of NH₃ --------  x

                     x = (30.36 x 22.4) / 17

                     x = 40 L

6 0
3 years ago
A serving of fish contains 50 g of protein and 4 g of fat . if protein has a caloric value of 4.0kcal/g and fat has 9.1 kcal/g ,
weqwewe [10]

Answer:

2.4x10² kcal

Explanation:

As the serving of fish contains 50g of protein that is 4.0kcal/g:

50g × (4.0kcal/g) = <em>200kcal</em>

<em> </em>

And in 4g of fat that is 9.1kcal/g:

4g × (9.1kcal/g) = <em>36.4kcal</em>

<em />

That means the kcal of the serving are:

200kcal + 36.4kcal = 236.4kcal

In 2 significant figures: <em>2.4x10² kcal</em>

<em></em>

I hope it helps!

<em />

8 0
3 years ago
Describe the redox reaction. Check all that apply 2AI(s) + 3ZnCI2(g) → 3Zn(s) + 2AICI3(aq).
Inga [223]

Answer:

Zinc is reduced.

The oxidation number of chlorine does not change.

Aluminum is oxidized.

Explanation:

  • For the reaction:

<em>2AI(s) + 3ZnCI₂(g) → 3Zn(s) + 2AICI₃(aq). </em>

<em></em>

  • For the elements in the reactants side:

Al has (0) oxidation state and converted to (+3) oxidation state in the products (AlCl₃), which means Al is oxidized and it is the reducing agent.

So, we can check that: Aluminum is oxidized.

Zn has the oxidation state (+2) in the reactants side (ZnCl₂) and converted to (0) in the products side (Zn), which means that Zn is reduced and it is the oxidizing agent.

So, we can check that: Zinc is reduced.

<em>and can not check: Zinc is the reducing agent.  </em>

<em />

The oxidation state of Cl does not change, it is the same in both sides (-1).

So, we can check: The oxidation number of chlorine does not change.

<em>and can not check: Aluminum atoms transfer electrons to chlorine atoms. </em>

<em />

  • So, the choices will be:

<em>Zinc is reduced.</em>

<em>The oxidation number of chlorine does not change.</em>

<em>Aluminum is oxidized. </em>

4 0
4 years ago
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The number 7 is the coefficient
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What would scientist do to best communicate these data to other scientists in a presentation
frosja888 [35]

Most likely use scientific names and list the procedures taken

4 0
3 years ago
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