Sulphur's electron configuration is 1s2s22p63s23p4. Sulphur
has valence electron?

Calculate the number of molecules present in 0.750 mol of mgo.

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?

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?