What is stoichiometry?
Stoichiometry Mass to Mass

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Chemistry
•
10th - 11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions.
2.
FLASHCARD QUESTION
Front
What is the molar mass of a compound?
Back
The molar mass of a compound is the mass of one mole of that compound, expressed in grams per mole (g/mol).
3.
FLASHCARD QUESTION
Front
How do you calculate the molar mass of NaCl?
Back
To calculate the molar mass of NaCl, add the atomic masses of sodium (Na, 22.99 g/mol) and chlorine (Cl, 35.45 g/mol): 22.99 + 35.45 = 58.44 g/mol.
4.
FLASHCARD QUESTION
Front
What is the balanced equation for the combustion of methane (CH4)?
Back
The balanced equation is: CH4 + 2O2 → 2H2O + CO2.
5.
FLASHCARD QUESTION
Front
How do you determine the mass of a product formed in a reaction?
Back
Use stoichiometric ratios from the balanced equation and the molar mass of the reactants and products.
6.
FLASHCARD QUESTION
Front
What is the mole ratio in the reaction 2Na + 2H2O → 2NaOH + H2?
Back
The mole ratio is 2:2:2:1 for Na: H2O: NaOH: H2.
7.
FLASHCARD QUESTION
Front
How many grams of hydrogen are produced from 120 g of sodium (Na)?
Back
5.2 g of hydrogen are produced when 120 g of sodium reacts.
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