Which reaction is endothermic?

H2 (g) + ½ O2 (g) → H2O (g), ΔH = - 57.82 kcal

½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g)

½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal

C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

56. When a person is not in touch with reality, they might have A) ADHD B) ADD C) bipolar disorder D) schizoph

A mining company is interested in monazite, a mineral substance that forms in igneous rock in Earth's interior. They think they found a lot of monazite in a sedimentary rock formation at Earth's surface.

What is the hybridization of Cl2CO

In salt water solution, the salt is the blank

What is the volume of 90.0 grams of ether if the density of ether is 0.70 g/mL? a) 1.1 x 10^2 mL b) 1.3 x 10^2 mL c) 6.3 x 10^1 mL d) 7.8 x 10^-3 mL

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?