How many O atoms are there in 0.35 mol of Ca(NO3)2? ¿Cuántos átomos de O hay en 0,35 mol de Ca(NO3)2?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.