Acombination reaction occures when one element replaces another element in a compound during a chemical reaction

What is the mass of 0.46 mol of mgcl2

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?

Who determined the nature of chemical bonds?