How many molecules are there in 65 g of silver nitrate (agno3)?

a.

3.82 × 1023

b.

2.3046 × 1023

c.

2.3046 × 1024

d.

3.82 × 1024

e.

2.3046 × 1012

The correct answer is B,

The first step to solving this problem is to find the molar mass of AgN. From the periodic table this can be found to be 169.87g/mol. As a reminder, Avogadro's Number tells us that there are 6.022×1 molecules per mol.

Now you can set up dimensional analysis to solve the problem as follows:

≈ 2.304

that's what i got you can count the number of atoms