How do shapes of different coastlines support continental drift

A beaker has 0.2 M of Na2SO4. What will be the concentration of sodium and sulfate ions?

Isomers have the same physical properties because the chemical formulas are identical. True False

Which quantum number describes the energy level of an electron? Spin quantum number Principal quantum number Magnetic quantum number Angular momentum quantum number

Is eating a piece of candy physical change, chemical change, or both?

43. Which temperature change would cause a sample of an ideal gas to double in volume while the pressure is held constant? (1) from 400. K to 200. K (2) from 200. K to 400. K (3) from 400. oC to 200. oC (4) from 200. oC to 400. oC

In Flask A, you reacted 7.23 g Mg with 1.05 mol HCl. In Flask B, you reacted 1.22 g Mg with 1.35 mol HCl. Which balloon will inflate the most?

I have 2 electrons is the first shell, 8 in the second, and 6 in the third

The production of plastics makes life, so it benefits society. On the other hand, the production of plastics causes air and water, so it also harms society.

The total number of moles represented by 20 grams of CaCO3 is

Particles of matter how have both potential and kinetic energy is that true or false?