Which planets atmosphere is composed primarily of nitrogen?

a) uranus

b) earth

c) neptune

d) saturn

How have the greenhouse gasses increased from the year 2000 to 2018

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?

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?