Ethene reacts with Y to produce ethanol. ethene + Y → ethanolWhat is Y?  A hydrogen

B oxygen

C steam

D yeast

plsss answer fast , I have an exam
​

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.