Question

what are the
number of moles in 6.4 g of methane​

Answer 1

Answer:

Now, no. of moles of methane = Given mass/molar mass = 64/16 = 4. So, there are 4 moles of methane or 4* 6.022 * 10^23 molecules of methane [ one mole has weight as molecular weight in gm] or 10 * 4 * 6.022 *10^23 e in 64 gm of methane [as each molecule has 10e]. There are 4 H atoms and 1 C atom.

Answer 2

Answer:

n = m/M

n = 6.4/16

n = 0.4 moles