Copper (l) sulfide can react with oxygen to produce copper metal by the reaction cu2s + o2 = > 2cu + so2. if 5.00 g of cu2s is used, then what is the theoretical yield of cu?

a. 10.0 g

b. 1.99 g

c. 1.00 g

d. 5.00 g

e. 3.99 g

Is it possible to decrease resistance of the wire without changing the material it's made out of?

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The mass of 1 mol of chromium (atomic mass 51.996 amu) is

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