Which type of scientist would determine the different kinds of fat found in
milk chocolate?
a. a physicist
b. a sociologist
c. a chemist
d. a biologist

i need plz

Stage in which a typical star has completely stopped fusion

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.

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?