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A mass of magnesium sulfate was taken - Edexcel - GCSE Chemistry - Question 5 - 2014 - Paper 1
Question 5
A mass of magnesium sulfate was taken. mass of watch glass + magnesium sulfate = 18.50 g mass of watch glass = 18.20 g The solid was dissolved in water to make 500... show full transcript
Worked Solution & Example Answer:A mass of magnesium sulfate was taken - Edexcel - GCSE Chemistry - Question 5 - 2014 - Paper 1
Step 1
Calculate the concentration of the magnesium sulfate solution in g dm⁻³.
Answer
To find the concentration, we first need to calculate the mass of magnesium sulfate dissolved:
-
Mass of magnesium sulfate = Mass of watch glass + magnesium sulfate - Mass of watch glass
= 18.50 g - 18.20 g = 0.30 g
Now we convert the volume from cm³ to dm³:
- Volume = 500 cm³ = 0.5 dm³
Next, we can calculate the concentration using the formula:
ext{Concentration} = rac{ ext{mass (g)}}{ ext{volume (dm³)}}
Substituting in the values: ext{Concentration} = rac{0.30 ext{ g}}{0.5 ext{ dm³}} = 0.60 ext{ g dm}^{-3}
Step 2
Step 3