The following word equation will be used to answer the next 4 question. When Copper metal is exposed to Oxygen gas, solid copper (11) oxide forms on the surface.
What is the formula for copper, oxygen gas, and copper (ll) oxide.
What is the full balanced chemical equation for it?

0.09 moles of sodium sulfate in 12 ml of solution

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice