Answer:
Explanation: Does any of this look right? To be honest I just looked it up.
The answer was 25
Do according to bodmas rule
Answer:
A
Explanation:
because number of particle = moles × 6.02 × 10^23
which gives the answer as an A
This question is Graham’s law. It states that one molecule will diffuse X times faster than another molecule, where x = square root (high atomic mass / low atomic mass). If you plug in hydrogen and helium’s masses, it’s root(4/1), or 2. That means hydrogen is twice as fast a helium, so helium will take 32 hours