concentration and dilution Flashcards
1
Q
what is the formula for concentration?
A
concentration= mass divided by volume
2
Q
what is the conversion for mass?
A
kg x1000 g x1000 mg
3
Q
what is the conversion for volume?
A
L x1000 mL
4
Q
what is the conversion for concentration (g/mL to %m/v or %m/m)
A
g/mL x100 %m/v or %m/m
5
Q
what is the conversion for concentration (g/mL to g/L)
A
g/mL x1000 g/L
6
Q
what is the conversion for concentration (g/mL to ppm (mg/L or mg/kg))
A
g/mL x1000000 ppm
7
Q
2000 mL of salt water solution contains 5g of salt. What is the concentration of the solution? (concentration in g/L)
A
2.5g/L
8
Q
how do you prepare a salt-water solution?
A
weigh your mass, dissolve it in some water, transfer it to a volumetric flask, add water (about 1L)
9
Q
A
