Joey adjusts the pressure exerted on a balloon from 26 psi to 68.7 psi. As he does so, the volume changes as well. If the initial volume was 370 ml, what is the new volume in ml?

140.03 ml

Explanation:

boyles law

P1V1 = P2V2

V2 = P1V1/P2

V2 = (26 * 370)/68.7

V2 = 140.029112082

more pressure <-> less volume

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