How many moles are in
2.05 x 1025 molecules
of Cl?

2.000 moles

1.204 x 1024 molecules of carbon monoxide would contain 2.000 moles. 8. 4 moles of potassium chromate would contai formula units. 4 molesy 6:02X!

Explanation:

To go from molecules to moles, divide the numbers of molecules by 6.02 x 1023.

c) always accurate

hope i u

#faaz

&

messi

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms