A component of most proteins called serine has an approximate molar mass of 100 g/mole. If the percent composition is as follows, what is the empirical and
molecular formula of serine?
C = 34.95 % H= 6.844 % 0 = 46.56 % N= 13.59 %

Determine the number of moles of air present in 1.35 l at 750 torr and 17.0°c. which equation should you use? n=pv/rt what is the number of moles present? ⇒ 0.056 mol a sample of n2 gas occupying 800.0 ml at 20.0°c is chilled on ice to 0.00°c. if the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? which equation should you use? v2= p1v1t2/p2t1 what is the final volume of the gas? ⇒ 932 ml these are the answers