The mass of a an atom of helium is 6.65 x 10^−24. use scientific notation to express the mass of 250 helium atoms. a) 1.6625 x 10−21 b) 1.6625 x 10−22 c) 1.6625 x 10−24 d) 1.6625 x 10−26

i took the test and it's actually A)1.6625 x 10−21 :)

answer: 298143

step-by-step explanation:

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation: