What parts of the earth is a solid composed of nickel and iron?

In apex! a liquid heated beyond a certain temperature becomes

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 many grams of phosphorus are contained in 5.09 moles of phosphorus?