Answer to Question #52247 in Physical Chemistry for vi

Question

What is the appropriate S.I. unit for distance?
centimetres
inches
metres
kilometres
8 How many decimeters are there in 15 centimeters?
150 dm
1.5 dm
0.15 dm
none of these
9 The S.I unit for amount of substance is ___________.
Mole
Gram
Dozen
Metre
10 Distillation can be used to separate __________.
a soluble solid from a solution
a liquid from a solution
a solid from a solid
an insoluble solid from a solution
11 Which one of the following can be separated by adding water, stirring and filtering?
Copper and tin
Salt and sugar
Sulfur and sugar
Salt and copper sulphate
12 Fractional distillation cannot be used to ___________.
separate the components of liquid air
refine crude oil
test the purity of a substance
separate methanol and water
13 Fractional distillation cannot be used to ___________.
refine crude oil
separate the components of liquid air
test the purity of a substance
separate methanol and water

Answer 1

metres
1.5 dm
Mole
a liquid from a solution
Sulfur and sugar
test the purity of a substance