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21 Cards in this Set
- Front
- Back
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A mole is |
The number of particles equal to the number of carbon atoms in 12 G of C 12 1 mole = 6.022 × 10^23 |
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Avagadros number |
6.022 × 10^23 |
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Molar mass |
The mass of one mole of any type of like items AKA atomic mass |
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Empirical formula |
The simplest whole number ratio |
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Molecular formula |
A multiple of the empirical formula also it is the actual number of atoms in the formula |
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When looking for the formula and working with percents assume the sample size is |
100 g |
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When determining chemical formula round lower if less than .... and round up if greater than ... |
0.2, 0.8 |
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When determining the chemical formula if a decimal is between .2 and .8 |
Multiply by a fractional denominator |
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What are the steps for determining the chemical formula |
1) change percent to grams 2) change grams to moles 3) divided by the smallest number 4) multiply till whole |
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Think of coefficients as |
Moles |
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Coefficients do not |
Add or change the molar mass |
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Limiting reactant problems can also be thought of as |
either or |
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Percent yield is |
Actual amount of product over theoretical amount of product X 100 |
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🔺 H is also known as |
Enthalpy |
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Limiting reactant |
The reactant that is completely consumed in a chemical reaction |
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Theoretical yield |
The amount of product that can be made in a chemical reaction based on the amount of limiting reactant |
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Actual yield |
The amount of product actually produced by a chemical reaction |
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Stoichiometry |
The numerical relationship between chemical quantities in a balanced chemical equation |
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Mass percent of an element is |
The elements percentage of the total mass of the compound |
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Convert from grams of a compound to grams of a constituent element |
Mass compound to moles compound to moles element to mass element |
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Molar mass of an element serves as a conversion factor between |
Grams and moles of that element |
