2. Which of the following is NOT a necessary input for the process of photosynthesis? A. CO2 (carbon dioxide)
B. Sunlight
C. H20 (water)
D. O2 (oxygen)

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Idont understand it 1.what is the boiling point of a solution of 675 grams of ethylene glycol (c2h6o2) in 2.50 liters of water?

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