How many grams is 2.5 x 10^22 molecules of CH4?

0.67 grams of CH4

Explanation:

To convert from molecules to grams, you need to first convert to moles then convert to grams.

Avogadro's Number (6.022 x 10^23) tells us how many molecules are in a mole.

(2.5 x 10^22)/(6.022 x 10^23) = 0.041514 moles of CH4

Then we convert from moles to grams by multiplying moles of CH4 by the molar mass.

0.041514 moles of CH4 x 16.04 g= 0.67 grams of CH4

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)