#1: The average velocities of gas molecules in cylinders A, B, C, and D are 20 m/s, 50 m/s, 60 m/s, and 100 m/s, respectively. T
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Measured volume = 10 ml
mass = 9.925 g
density = 0.9975 g/ml
density =
so actual volume =
= 
= 9.95 mL
Percentage Error =
x 100
=
x 100 = 0.5 % error
mass = 9.925 g
density = 0.9975 g/ml
density =
so actual volume =
Percentage Error =
=
The mass percent of sulfurous acid in the new solution : 38.9%
<h3>Further explanation</h3><em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>
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solution 1
composition :
- 35% acid :
- water :
solution 2(new solution)
composition :
- water
- Total mass of new solution after water evaporated
- %mass of acid in a new solution