In the reaction 2Ca + O2 → 2CaO for every 2 Ca you will need how much O2? a. 1 b. 2 c. 3 d. 4

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases

How to draw a diagram to represent a calcium metal lattice?