3 years ago

1 poin

Chemistry

1 answer:

8090 [49]3 years ago

4 0

Answer:

It's called Independent variable

Explanation:

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What is the pH of ammonia? I know the pH of ammonia varies depending on concentration, so what's the pH of pure ammonia?

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When nitrogen gas (N2) reacts with hydrogen gas(H) ammonia gas (NH3) is formed. How many grams of hydrogen gas are required to r

kupik [55]

Mass of Hydrogen gas required to react : 0.936 g

<h3>Further explanation</h3>

Reaction on Nitrogen gas and Hydrogen gas to produce Ammonia gas

N₂ (g) + 3 H₂ (g) ⇒ 2 NH₃ (g)

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol

so mol Nitrogen for 3.5 L at STP :

$\tt mol=\dfrac{3.5~L}{22.4~L}=0.156$

From the equation, mol ratio of N₂ : H₂ = 1 : 3, so mol H₂ :

$\tt \dfrac{3}{1}\times 0.156=0.468$

then mass of Hydrogen(MW= 2 g/mol) :

$\tt mass=mol\times MW\\\\mass=0.468\times 2\\\\mass=0.936~g$

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Which statement best describes what occurs during a chemical reaction?

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bonds within the nucleus of reactants atoms are broken and rearranged to form new product atoms

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Silver nitrate bond type

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