A1.56 g sample of copper reacts with a mass of oxygen to form 1.95 g of the metal oxide. in another experiment, the molar mass of the metal oxide is calculated to be 79.545 grams/mol. what is the molecular formula of the metal oxide?

The molecular formula of the metal oxide is CuO

Explanation:

Molar mass 79.545 g/m belongs to CuO

This is the reaction:

2Cu(s) + O₂(g) → 2CuO (s)

2 mol of Cu produce 2 mol of CuO

Molar mass Cu = 63.5 g/m

Mass / Molar mass = 1.56 g / 63.5 g/m →0.0245 m

0.0245 mol of Cu produce 0.0245 mole of CuO

Molar mass CuO = 79.545 g/m

Mol . Molar mass = mass

0.0245 m . 79.545 g/m = 1.95 g

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i