Answered

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Component 4C
Q1. What piece of equipment does Joshua need to measure the amount of salt in the 200 mL of sea
water?
Q2. Joshua's three readings for the mass of salt after evaporation are 6.5 g, 7.0 g and 7.5 g. What
value for the weight/mass of salt should he use?
Q3. Joshua was very accurate with his measurement of the volume of sea water so what is the
concentration of the seawater in his experiment? Give your answer in grams per liter.
​

Sagot :

Answer:
1.Salinometer

2. 7.0 g
3. 35 g/L

Explanation:

2. 6.5 + 7.0 + 7.5           21
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻ =      ⁻⁻⁻⁻⁻ = 7.0
          3                           3
3. 7.0
  ⁻⁻⁻⁻⁻ = 0.035x1000 = 35
  200

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