What does the presence of ide ending on the name of an ion tell you about that ion

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90