Chemical Formulas Practice

 $H_2$  How many atoms are in this? Type the NUMBER (1, 2, 3, etc)

 $2CaCl_3$  How many molecules are here? Type the NUMBER (1, 2, 3, etc)

 $2CaCl_3$  How many atoms of chlorine (Cl) are present? Type the NUMBER (1, 2, 3, etc)

 $NH_3$  How many molecules are present? Type the NUMBER (1, 2, 3, etc)

 $4CH_4$  How many atoms of carbon (C) are there? Type the NUMBER (1, 2, 3, etc)

 $6C_6H_{12}O_6$  How many molecules are present? Type the NUMBER (1, 2, 3, etc)

 $4H_2O$  How many hydrogens are present? Type the NUMBER (1, 2, 3, etc)

 $3NO_2$  How many atoms of oxygen (O) are there? Type the NUMBER (1, 2, 3, etc)

 $7NaCl$  How many atoms of sodium (Na) are there? Type the NUMBER (1, 2, 3, etc)

 $9CaO$  How many atoms of calcium (Ca) are present? Type the NUMBER (1, 2, 3, etc)