If the density of a liquid is 20g/mL and the volume is 70mL, what is the mass?

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

How many miles of water are produced if 5.43 mol pbo2 are consumed

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.