The respiratory system is responsible for the exchange of oxygen with what gas? nitrogen hydrogen water vapor carbon dioxide

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

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?