A student monitors the mass change during the oxidation of copper powder in an open crucible to form copper(II) oxide:
2Cu(s)+O2(g)→2CuO(s) 2\text{Cu}(\text{s}) + \text{O}_2(\text{g}) \rightarrow 2\text{CuO}(\text{s}) 2Cu(s)+O2(g)→2CuO(s)During a test run, 10.0 g of copper is found to react completely to produce 12.5 g of copper(II) oxide.
What mass of copper(II) oxide is produced when 2.4 g of copper is completely oxidized under the same conditions?
1.92 g1.92\text{ g}1.92 g
2.4 g2.4\text{ g}2.4 g
3.0 g3.0\text{ g}3.0 g
4.8 g4.8\text{ g}4.8 g