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hoa [83]
3 years ago
10

Stoichiometry is only used to measure the amount of reactant that is needed. TRUE or FALSE

Chemistry
1 answer:
slamgirl [31]3 years ago
7 0
False.

Stoichiometry is also used to make other calculations: limitant or excess reagents and quantity of products produced are two important uses of stoichiometry. Furthermore it is used to make energy calculations related with the chemical reactions.
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How many moles of Au2S3 is required to form 56 grams of H2S at STP?
Law Incorporation [45]

Answer:

0.55 mol Au₂S₃

Explanation:

Normally, we would need a balanced equation with masses, moles, and molar masses, but we can get by with a partial equation, if the S atoms are balanced.

1. Gather all the information in one place:

M_r:                          34.08

          Au₂S₃ + … ⟶ 3H₂S + …  

m/g:                             56  

2. Calculate the moles of H₂S

Moles of H₂S = 56 g H₂S × (34.08 g H₂S/1 mol H₂S)

                      = 1.64 mol H₂S

3. Calculate the moles of Au₂S₃

The molar ratio is 1 mol Au₂S₃/3 mol H₂S.

Moles of Au₂S₃ = 1.64 mol H₂S × (1 mol Au₂S₃/3 mol H₂S)

                         = 0.55 mol Au₂S₃

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3 years ago
What relationship exists between an enzyme and a catalyst?
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A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction. The fact that they aren't changed by participating in a reaction distinguishes catalysts from substrates, which are the reactants on which catalysts work. Enzymes catalyze biochemical reactions.

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The answer is strong winds
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Magnesium oxide can be made by heating magnesium metal in the presence of oxygen. The balanced equation for the reaction is
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Magnesium+Oxygen-->Magnesium\ Oxide\\\\You\ need\ complement\ factors:\\\\
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Answer:

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Explanation:

bdhdhdfhshdudhdhd7x6x8xjdjdjdjdjdid8dijdjdjdhdhdj

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2 years ago
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