Which units represent density? select all that apply. -cm³ -g/m³ -g/cm³ -cm³/gm -kg/l -kg/cm³ -ml/cm³

Explanation:

We know that density is defined as the mass per unit volume

When mass in gram and volume in cubic centimeter

Then units of density is

When mass is given in Kg and volume given in litre then unit of density

When mass is given in gram and volume in meter then units of density is given by

When mass is given in kilogram and volume is given in cubic centimeter

Then, units of density is given by

e

explanation:

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