How many kilojoules are absorbed when 0.772 mol of N2 (g) reacts? N2 (g) + 2NO (g) → 2N2O (g) ΔH = 73.8 kJ

What is the definition if a chemical bond? A. a mutual attraction between the nuclei and electrons in two different atoms. B. a mutual attraction between the nuclei and electrons in a single atom. C.

Stacy runs a paper chromatography experiment using the same ink, but two different solvents. Using solvent A results in the ink separating into three bands, but solvent B does not carry the ink away from the original spot.

What comes to mind when you hear the term acid and base?

The reaction below can be catalyzed by bromine (Br2). if you carried out such a reaction, which compound would you expect to find in the reaction container at the end of the reaction? A) Br2 B) BrO C) BrH2 D) BrO2

What is chemical reaction

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)