A stranger gave you a beaker which contained 0.301 moles of NH4OH. Calculate the number of hydrogen contained in the beaker.

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 provides structure to the human body?

What is the polyatamic ion of borate