How many molecules of ch4 are in 48.2 g of this compound?

molecules of methane are present.

The molar concept is very necessary for solving this question. The molecular weight of methane is to be calculated.

The molecular weight of methane = = 16.

So in 16 grams of methane, 1 mole of methane is present.

So, in 48.2 grams of methane, number of moles of methane present = 3.

In 1 mole of any substance, number of molecules of that substance present =

So,number of molecules present .

lithosphere and asthenosphere

the answer is b. dilution