I am a metal with electrons in 5 energy levels that can form ions with a +2 charge

The minerals found in bones are deposited by living cells called

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?

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy