PP HEL ME WITH THIS QUESTION BRAINLIEST PLUS 20 POINTS Is the following reaction endothermic or exothermic?

N2 + 2 H2 <-> 2NH3 + heat
Question 2 options:

endothermic

exothermic

Exothermic

Explanation:

Since heat is released the reaction is exothermic.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally