Question: 2 Write the formulae of the following:
i) Mercurous oxide
ii) Stannic bromide
iii) Ammonium acetate
iv) Potassium permanganate
v) Aluminium nitride
Show crisscross method of the above and answer​

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.