1
Q
What is the volume of 25cm3 in dm3?
A
0.025dm3
2
Q
What is the volume of 1.25cm3 in dm3?
A
0.00125dm3
3
Q
What is the formula linking concentration (c), volume (V) and mass (m)?
A
m = c x V
4
Q
What is the concentration of a solution when 20g of a salt is dissolved into 0.150dm3 of water?
A
133.33 g/dm3
5
Q
Into which volume are 50g of a salt dissolved to get a concentration of 250g/dm3?
A
0.2dm3
6
Q
How many cm3 are 0.010dm3?
A
10cm3
7
Q
What is the mass of salt dissolved into a volume of 30cm3 of water to make a concentration of 120g/dm3?
Remember to convert cm3 to dm3 first!
A
3.6g
8
Q
What is the volume of water needed to dissolve 150g of a salt to make a concentration of 1200g/dm3?
A
0.125dm3
9
Q
What is the mass of a salt dissolved into 50cm3 water to make a concentration of 600g/dm3?
A
30g
OCR Chemistry
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