Chemical Quantities and Calculations - All the question in the photograph please?

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Answer 1 · 2017-02-14T18:00:41

Sorry, but Socratic is not a Homework answering service. Here are the answers to the questions in your first image.

1 a) Clip 1 Clip 1

$"Volume" = 500 color(red)(cancel(color(black)("cm"^3))) × "1 dm"^3/(1000 color(red)(cancel(color(black)("cm"^3)))) = "0.5 dm"^3$

$"Moles" = 1 color(red)(cancel(color(black)("dm"^3)))× "2 mol"/(1 color(red)(cancel(color(black)("dm"^3)))) = "1 mol"$

1 b) Clip 2 Clip 2

$"Moles" = 2 color(red)(cancel(color(black)("L"))) × "0.5 mol"/(1 color(red)(cancel(color(black)("L")))) = "1 mol"$

2 a) Clip 3 Clip 3

$"Concentration" = "4 mol"/("2 dm"^3) = "2 mol/dm"^3$

2 b) Clip 4 Clip 4

$"Volume" = 200 color(red)(cancel(color(black)("cm"^3))) × ("1 dm"^3)/(1000 color(red)(cancel(color(black)("cm"^3)))) = "0.2 dm"^3$

$"Concentration" = "0.3 mol"/"0.2 dm"^3 = "1.5 mol/dm"^3$