What is the mass (in amu) of a sample of calcium containing 95 atoms?

How to convert a density of 0.791g/cm3 to lb/ft3

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Which of the following is the molecular formula for a simple sugar? a. cooh b. h2o c. oh d. c6h12o6