What molar quantity is associated with a 130*kg130⋅kg mass of water?

And what mass is associated with 1.82*mol1.82⋅mol of "sulfur dioxide"sulfur dioxide?

And what mass is associated with 0.0482*mol0.0482⋅mol of CH_2Cl_2CH2Cl2?

1 Answer
anor277
Sep 10, 2017

We use the quotient.....#"Mass"/"Molar mass"="Number of moles..."#

Explanation:

And so for "water"water we gots....

(130*kgxx10^3*g*kg^-1)/(18.011*g*mol^-1)=7218.2*mol130⋅kg×103⋅g⋅kg−118.011⋅g⋅mol−1=7218.2⋅mol

And for "nitrous oxide"nitrous oxide we gots....

(4.6*g)/(44.01*g*mol^-1)=??*mol4.6⋅g44.01⋅g⋅mol−1=??⋅mol

And for "sulfur dioxide"sulfur dioxide we gots....

1.82*molxx64.07*g*mol^-1=??*g1.82⋅mol×64.07⋅g⋅mol−1=??⋅g

And for "methylene chloride"methylene chloride we gots....

0.0484*molxx84.93*g*mol^-1=??*g0.0484⋅mol×84.93⋅g⋅mol−1=??⋅g

Do you see what I have done with the quotient?

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