All categories

4 years ago

8.7 moles of ammonia (NH3) is formed in the following reaction.How many grams of hydrogen reacted?

1 answer:

7 0

The formula for the formation of ammonia is 2(N2) + 3(H2) = 2(NH3)

3 moles of H2 make 2 moles of NH3 so 8.7 * (3/2) = 13.05 moles of H2

A mole of H2 is 2.01588 grams. 2.01588 * 13.05 = 26.31 grams of hydrogen

You might be interested in

How much solar radiation is reflected back by clouds? 5 percent

Ipatiy [6.2K]

I think five percent.

5 0

4 years ago

Read 2 more answers

How many joules are required to raise the temperature of a 6.50 g sample of silver from 34°c to 189°C? The specific heat of gold

nata0808 [166]

Answer:

236.76 J

Explanation:

Parameters given:

Mass of sample, m = 6.50 g

Initial temperature, $T_1 = 34^o C$

Final temperature, $T_2 = 189^oC$

Specific heat capacity of gold, $c = 0.235 J/g^oC$

Heat of a substance is related to specific heat capacity by the formula:

$H = mc(T_2 - T_1)$

$H = 6.5 * 0.235 * (189 - 34)\\\\\\H = 6.5 * 0.235 * 155\\\\\\H = 236.76 J$

236.76 J of heat is required to raise the temperature of the sample.

5 0

4 years ago

In the following reaction, Zn is Zn(s) H2SO4(aq) --> ZnSO4(aq) H2(g) A.Reduced B.Oxidized C.This is not a redox reaction D.An

Svetlanka [38]

Answer: The correct option is B) oxidized

Explanation:

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously.

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when the oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when the oxidation number of a species decreases.

For the given chemical reaction:

$Zn+H_2SO_4+S\rightarrow ZnSO_4+H_2$

On the reactant side:

Oxidation number of H = +1

Oxidation number of Zn = 0

Oxidation number of S = +6

Oxidation number of O = -2

On the product side:

Oxidation number of H = 0

Oxidation number of Zn = +2

Oxidation number of S = +6

Oxidation number of O = -2

As the oxidation number of Zn is increasing from 0 to +2. Thus, it is getting oxidized. Similarly, the oxidation number of H is decreasing from +1 to 0. Thus, it is getting reduced.

Hence, the correct option is B) oxidized

4 0

3 years ago

In terms of temperature, pressure and volume, what is happening when a hot air balloon inflates?

oksano4ka [1.4K]

Explanation:

This means that when the gas in a hot air balloon is heated, the gas expands. The balloon has a fixed volume, but there is a hole at the bottom. So, the extra volume flows out of the hole in the bottom of the balloon. Since there is less air in the same volume, its density decreases

7 0

3 years ago

Explain why atoms are always neutral in charge.

solniwko [45]

"Atoms have an equal proton and neutron charge."

5 0

3 years ago