Help needed ASAP, I will mark your answer as brainliest.

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?