a sample of cyanic acid, HCN, contains 3.33x10^22 atoms. How many moles of cyanic acid are in the sample? **hint, find the number of molecules of HCN first**

0.0553 moles of HCN are in the sample

Explanation:

Cyanic acid → HCN

Molar mass: 27 g/mol

1 mol of cyanic acid has 6.02×10²³ atoms of HCN

We make the conversion in order to find out the moles

3.33×10²² atoms . 1 mol /6.02×10²³ atoms = 0.0553 moles of HCN are in the sample.