Uploaded by Matthew Sean Pinchuk

# Concentration Practice Quiz gr 9

```Solutions: Concentration Practice in Standard g/L and %
1L = 1000ml
1 kg = 1000g
1g = 1000mg
1. Complete the following table using the appropriate units:
a)
b)
c)
d)
e)
Solute
15g
6ml
Solvent
245ml
Concentration
3529
2.2L
2L
2500ml
21.27 ml
22 % (v/v)
16 % (m/v)
1800mg
60g
You
22
644
fix
too
61.22g
0.991L
or 6.12
or
24g/L
x 00
&Eacute;
22
42
o 22
L
9
6 21.27
2. To make a special alloy, you need to mix 20kg of copper with 360kg of zinc. What is the
concentration in % (m/m) of this alloy?
both to g
mlm
Fff
won't change
the
&Eacute;
because it's a
31
s
go
5.26
100
3. Which of the following solutions has the highest concentration?
a) 5 g of solute in 400ml of solution
12
b) 400 mg of solute in 370ml of solution
c) 4.5 g of solute in 0.6L of solution
d) 50 mg of solute in 800 ml of solution
Sf
100
sk
c
imma
4
1
7.5812
4. If you make some iced tea from a powder mix and the instructions tell you to mix 15g of
powder with 400ml of water, what is the concentration of the sugary drink in g/L? What
about in % (m/v)?
6 41 37.5912
3.75
or
alloy
5. What do you call a solid solution? ____________________
6. What volume in ml would you need to add to 36g of Kool aide to make a drink with a
concentration of 150g/L?
re
si
o
7. Pepsi has a sugar concentration of 9.8 % (m/v). How many g of sugar are in a 355ml can
of Pepsi?
98
100
g
0.0985
0.098
a
355 1
34.79g
8. How many grams of protein powder would you need to make a protein shake with a
concentration of 40g/L in a 750ml cup of water?
Substance being
dissolved
&Eacute;
4051L x 0.75
Salt in salt water
9. What is a solute? __________________ Can you give an example? ________________
Water inssalt water
Substance doing you give an example? __________________
What is ain
solvent? _________________Can
the dissolving
```