Which scientist discovered that other galaxies and stars were moving away from us at speeds proportional to how far they were away?

The process for the conversion of a liquid to a gas is called a. sublimation. b. evaporation. c. vaporization. d. condensation.

If you burn 28.2g of hydrogen and produce 252g of water, how much oxygen reacted

How many cubic centimeters (cm3) of olive oil have the same mass as 1.10 L of gasoline? Olive oil. 92g/mL Gasoline. 66g/mL

Is magnesium or calcium more active? Why?

Refer to aqueous solutions containing 1:1 mole ratios of the following pairs of substances. Assume all concentrations are 1 M.

3 During a flame test, a lithium salt produces a characteristic red flame. This red color is produced when electrons in excited lithium atoms (1) are lost by the atoms (2) are gained by the atoms (3) return to lower energy states within the atoms

Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3 (po4) 2

Whats the relationship between the temperature and the density of a substance

The ionic naming rules

What is the PH of a solution whose [H+] is 0.0007