Calcium carbonate reacts with nitric acid as follows. CaCO3(s) + 2HNO3(aq) + Ca(NO3)2(aq) + H20(l) + CO2(g)
0.05 mol of calcium carbonate was added to a solution containing 0.08 mol of nitric acid.
Which of the following statements is true?
A 0.05 mol of carbon dioxide is produced.
B 0.08 mol of calcium nitrate is produced.
C Calcium carbonate is in excess by 0:01 mol.
D Nitric acid is in excess by 0.03 mol.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest

it is b that is the answer.