Adenosine triphosphate (atp) is the main \"energy currency\" used in cells. atp hydrolysis is coupled with unfavorable reactions, making the net change in energy for the set of reactions less than zero (favorable). although atp is the main energy currency, other molecules can fulfill this role and take part in coupled reactions. determine whether each of the phrases or examples describes a thioester, reduced cofactor, or phosphorylated compound: acetyl-coa, guanosine triphosphate, nadh, the sulfur-carbon bond is hydrolyzed, these compounds yield h2po4- upon hydrolysis, these compounds accept e- during the oxidation of substrates and energy is released when they are oxidized.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

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.