What is stoichiometry?
Basic Stoichiometry

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Science
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8th 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 based on the conservation of mass.
2.
FLASHCARD QUESTION
Front
What is a mole in chemistry?
Back
A mole is a unit of measurement used to express amounts of a chemical substance, defined as containing exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).
3.
FLASHCARD QUESTION
Front
How do you calculate the mass of a substance from moles?
Back
To calculate the mass of a substance from moles, use the formula: mass (g) = moles × molar mass (g/mol).
4.
FLASHCARD QUESTION
Front
What is the molar mass of NaCl?
Back
The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol.
5.
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, reflecting the law of conservation of mass.
6.
FLASHCARD QUESTION
Front
What is a mole ratio?
Back
A mole ratio is a ratio between the amounts in moles of any two compounds involved in a chemical reaction, derived from the coefficients of a balanced equation.
7.
FLASHCARD QUESTION
Front
How do you determine the coefficient in a balanced equation?
Back
The coefficient in a balanced equation indicates the number of moles of a substance involved in the reaction and is determined by balancing the number of atoms of each element.
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