.An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume