We gave an object with a density of 620 g/cm^3 and a volume of 75cm^3. what is the mass of this object?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

If the solubility of a gas in water is 1.22 g/l at 2.75 atm, what is its solubility (in g/l) at 1.0 atm?