Challenge Problem 1: In the combination reaction of H₂ and O₂ to produce water, if you have 3 moles of hydrogen and 4 moles of oxygen, what mass of water is created? Is there anything left over? _ H₂ + _O₂ + _H₂O

the answer is definitely c.

no but i do not usually comment or use my voice that much when it comes to social media

i belive it is water

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.