When 8.92 mg of a compound containing only hydrogen and carbon underwent
complete combustion with 32.1mg of oxygen, 15.5mg of water was produced. the
other product produced is carbon dioxide. what mass (in mg) of carbon dioxide was
formed?

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

What is the number of atoms in 3.54 mol s