An atom of aluminum (al) has an atomic number of 13 and a mass number of 27. how many neutrons does it have?

a) 13
b) 14
c) 27
d) 40

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

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?

Will mark brainliest how many electrons can be held in the energy level n = 4?