Counting Atoms - Part 2

Front

How many total atoms are in K₂PO₄?

Back

7

Front

How many molecules are in 5 MgCl₂?

Back

5

Front

What does a subscript indicate in a chemical formula?

Back

The number of atoms of that element.

Front

How many different elements are in Li₂CO₃?

Back

3

Front

How many hydrogen atoms are in (NH₄)₂CrO₄?

Back

8

Front

What is the formula for calculating the total number of atoms in a compound?

Back

Add the subscripts of all elements.

Front

What does the symbol 'Mg' represent in a chemical formula?

Back

Magnesium, an element.

Front

In the compound NaCl, how many total atoms are present?

Back

2 (1 Na and 1 Cl).

Front

What is the significance of a coefficient in a chemical equation?

Back

It indicates the number of molecules or moles of a substance.

Front

How do you determine the number of oxygen atoms in 3 Ca(NO₃)₂?

Back

There are 6 oxygen atoms (3 x 2).