Sedimentary rock made out of deposits of carbon leaving carbon in the process what the results?

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.