Amedium-sized carrot weighs 64 g and contains 7.0 g of carbohydrate.
what percent, by mass, of the carrot is carbohydrate? express your answer using two significant figures.

10,93% of a carrot is carbohydrate.

Explanation:

In order to solve this you just have to create a rule of three where 64g is the 100% and you want to calculate how much is 7g in percentage:

So there are 10.9375 % carbohydrates in a piece of carrot.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.