I used an online calculator and got 54.22 m/s. I hope that helps
Answer:
The square root of the molar mass of B ÷ the square root of the molar mass of A
Explanation:
Graham’s Law applies to the effusion of gases:
The rate of effusion (r) of a gas is inversely proportional to the square root of its molar mass (M).
If you have two gases A and B, the ratio of their rates of effusion is

Answer: no
Explanation:
It could be dangerous since you don't know what substance are you adding.it may end up in an explosion
I hope this helps :)