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