Chemistry

Facts

100

What is 1mol the equivalent of

6.02x10^{23 Representative particles}

200

6.02x10²³?

Avagadros number

300

What part of an atom on the periodic table has the mass of 1 mol?

The decimal_.

400

These are all equal

1 mol, molar mass, Avagadros number, Representative particles, 22.4L of gas @STP

500

Empirical formula 

Lowest whole number ratio of atoms in a compound.

facts 2

100

A single element is a what

An atom

200

Two or more atoms

A molecule 

300

These are typically nonmetal

Molecules 

400

Smallest pieces of a substance 

Molecular compound: molecule

Ionic compound: formula unit

Element: Atom

math

100

The percent by mass of an element 

Number of grams of the element divided by the number of grams of the compound multiplied by 100%

200

Empirical to molecular formula 

Divide the actual molar mass by the empirical formula mass. You get a whole number to increase each coefficient in the empirical formula 

300

Get ratio from percent to composition (assuming you have 100g)

Percentage becomes grams

Convert grams to moles

Find lowest whole number ratio by dividing by the smallest number