Scholarship Science 9 Quiz

Science 9 Formula mass assignment #3 Name ______

Rb3PO3 CrC2O4

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total

2Rb3PO3 = ______4CrC2O4 = ______

C3H7O2 KMnO4

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total

Al2(CrO4)3 (NH4)2C4H4O6

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total

3Al2(CrO4)3 = ______4(NH4)2C4H4O6 = ______

Write the formula for each compound and then calculate the formula mass.

Tin(II) selenide Germanium arsenide

Formula- ______Formula- ______

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total

Lead iodide Cesium phosphide

Formula- ______Formula- ______

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total

Gallium sulfide Barium bromide

Formula- ______Formula- ______

Element / Number of atoms / Mass number / Element / Number of atoms / Mass number
Total / Total