Calculate the mass, in grams, of 992 atoms of cesium, Cs (1 mol of
Cs has a mass of 132.91 g).

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances