If you have 10 grams of a substance tha. t decays with a half-life of 14 days, then how much will you have after 42 days? 3.13g 6.25g 1.25g 2.50g

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.

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?