What is stoichiometry?
U6 Day 5 - Particle/Mole/Gram Stoichiometry Review

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Chemistry
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10th Grade
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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 based on the balanced equations.
2.
FLASHCARD QUESTION
Front
What is a balanced chemical equation?
Back
A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, ensuring the law of conservation of mass is followed.
3.
FLASHCARD QUESTION
Front
How do you determine the number of moles from grams?
Back
To determine the number of moles from grams, use the formula: Moles = Mass (g) / Molar Mass (g/mol).
4.
FLASHCARD QUESTION
Front
What is the molar mass of water (H2O)?
Back
The molar mass of water is approximately 18.02 g/mol.
5.
FLASHCARD QUESTION
Front
How many moles are in 5.2 grams of Na?
Back
To find moles, use the formula: Moles = Mass (g) / Molar Mass (g/mol). Molar mass of Na is 22.99 g/mol, so Moles = 5.2 g / 22.99 g/mol ≈ 0.226 moles.
6.
FLASHCARD QUESTION
Front
What is the mole ratio in the reaction 2H2 + O2 → 2H2O?
Back
The mole ratio is 2 moles of H2 to 1 mole of O2 to 2 moles of H2O.
7.
FLASHCARD QUESTION
Front
How many molecules are in 1 mole of a substance?
Back
1 mole of a substance contains approximately 6.022 x 10^23 molecules (Avogadro's number).
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