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Sever21 [200]
3 years ago
11

Please help and thank you

Chemistry
1 answer:
Assoli18 [71]3 years ago
8 0
Im pretty sure it's d
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Calculate the mass of arsenic trihydride produced from 117.4 g of hydrogen gas with excess arsenic trioxide:
Lana71 [14]

Answer: The mass of AsH_3 produced is, 1528.8 grams.

Explanation : Given,

Mass of H_2 = 117.4 g

Molar mass of H_2 = 2 g/mol

First we have to calculate the moles of H_2.

\text{Moles of }H_2=\frac{\text{Given mass }H_2}{\text{Molar mass }H_2}

\text{Moles of }H_2=\frac{117.4g}{2g/mol}=58.7mol

Now we have to calculate the moles of AsH_3

The balanced chemical equation is:

6H_2+As_2O_3\rightarrow 2AsH_3+3H_2O

From the reaction, we conclude that

As, 6 moles of H_2 react to give 2 moles of AsH_3

So, 58.7 moles of H_2 react to give \frac{2}{6}\times 58.7=19.6 mole of AsH_3

Now we have to calculate the mass of AsH_3

\text{ Mass of }AsH_3=\text{ Moles of }AsH_3\times \text{ Molar mass of }AsH_3

Molar mass of AsH_3 = 78 g/mole

\text{ Mass of }AsH_3=(19.6moles)\times (78g/mole)=1528.8g

Therefore, the mass of AsH_3 produced is, 1528.8 grams.

6 0
3 years ago
At 500K, the equilibrium constant for the reaction N2O4D2NO2 is 1.5 x 10^3. What is the equilibrium constant for the reaction: 6
Veronika [31]

Answer:

K = 2.96x10⁻¹⁰

Explanation:

Based on the initial reaction:

N2O4 ⇄ 2NO2; K = 1.5x10³

Using Hess's law, we can multiply this reaction changing K:

3 times this reaction:

3N2O4 ⇄ 6NO2; K = (1.5x10³)³ =3.375x10⁹

The inverse reaction has a K of:

6NO2 ⇄ 3N2O4 K = 1/3.375x10⁹;

<h3>K = 2.96x10⁻¹⁰</h3>

3 0
3 years ago
For lunch today, I ate an apple. What type of carbohydrate did I ingest?
mafiozo [28]

Answer:

Monosaccharide

Explanation:

Apples contain high levels of fructose, which is a monosaccharide.

8 0
3 years ago
How can the mechanical advantage of a lever be increased?
valentina_108 [34]

The answer is; A

The force or weight and distance on both sides of the fulcrum is given by the following ratio;

MA = Fb/Fa = a/b (MA = Mechanical Advantage)

The greater the distance from the fulcrum on which force is applied to lift a load on the other side of the fulcrum,  the less the effort required.

3 0
3 years ago
What is the name of HNO3?
Natali5045456 [20]
B: Nitric Acid is the answer you are looking for.
8 0
3 years ago
Read 2 more answers
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