What is caused by the heating and coolingof the earth

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols