Consider the following reactions: 1)
H2(g) + % O2g ---> H20. H = -243 kJ/mol
2)
% N2(g) + % 028 + 90.7 kJ --->NO(R)
3)
C(s) + % 020) ---> CO2 + 111 kl
4)
% H2(g) + %128 ---> Hlo H = 26 kJ/mol
Which of the above reactions is exothermic?

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland