When 4.979 grams of a hydrocarbon, cxhy, were burned in a combustion analysis apparatus, 16.20 grams of co2 and 4.976 grams of h2o were produced.
in a separate experiment, the molar mass of the compound was found to be 54.09 g/mol. determine the empirical formula and the molecular formula of the hydrocarbon.

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released