12/4/24 Empirical and Molecular Formulas IP

Front

What is the empirical formula of K2SO4?

Back

K2SO4

Front

How many Carbons 'C' are in C18H34O3?

Back

18

Front

What is the best definition for subscript?

Back

The little number that tells the number of atoms for each element.

Front

The empirical formula of a substance is CH2O. The molar mass is 180g/mol. What is the molecular formula?

Back

C6H12O6

Front

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

Back

Mg3N2

Front

Define empirical formula.

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

Define molecular formula.

Back

The actual number of atoms of each element in a molecule of a compound.

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

How do you calculate the empirical formula from percent composition?

Back

Convert percentages to grams, then to moles, and simplify the ratio.

Front

What is the molar mass of CH2O?

Back

30 g/mol