Chemical Energy vs. Heat Energy Chemical Energy
Chemical Energy =
Heat E. + A
+
B ==> AB (more Chem E. less Heat Energy)
Ex.
10 kj + N2 + 3H2 ==> 2NH3
10,000j of heat energy into chemical
"Endothermic" (colder)
10 Kj per mole of N2... If 5gN2 How much energy?

answer; /// i do believe that the correct answer is (a) boiling

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

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

catya that's not even a b or c