Nitrogen and hydrogen combine to form ammonia in the haber process. calculate (in kj/mole) the standard enthalpy change dh° for the reaction written below, using the bond energies given. just enter a number (no units).
n2(g) + 3h2(g) -> 2nh3(g)bond: n≡n h-h n-hbond energy: 945 432 391

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

In pqr m< p=60 m< q= 30 and m

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.