What is the mass in grams of 0.750 moles of C_3H_8C3H8?

1 Answer
anor277
Aug 26, 2017

Well what is the mass of one mole of propane.....?

Explanation:

Well, it's 44.1*g44.1⋅g, and how did we get this?

We take the sum....3xx12.011*g*mol^-1(C)+8xx1.00794*g*mol^-1 (H)3×12.011⋅g⋅mol−1(C)+8×1.00794⋅g⋅mol−1(H); from where did I get the atomic masses? Did I know them off the top of my head? Do you have to learn them?

We have got a 0.750*mol0.750⋅mol quantity, and to get its mass we take the product......

0.750*molxx44.1*g*mol^-1~=30*g0.750⋅mol×44.1⋅g⋅mol−1≅30⋅g

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