In physical chemistry, there is an equation for the root mean square speed, or also known in abbreviated form of rms. The equation is:
rms = √(3RT/M)
where
R = 8.314 J/mol-K
T is the absolute temp
M is the molar mass; For H₂, M = 0.002 kg/mol
rms = √(3(8.314)(100+273)/(2))
<em>rms = 2,156.78 m/s</em>
38.46g
Explanation:
Given parameters:
Mass of CaF₂ = 75.0g
Unknown:
Mass of calcium that can be recovered = ?
Solution:
This is a mass percentage problem and we need to solve it accordingly.
To solve this problem;
Find the molar mass of CaF₂
Find the ratio between the molar mass of Ca and that of CaF₂
Multiply by the given mass
Molar mass of CaF₂ = 40 + (2 x 19) = 78g/mol
Mass of calcium =
x 75 = 38.46g
learn more:
Mass percentage brainly.com/question/8170905
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