What is the ph of an aqueous solution that contains 2.7 x 10^20 h3o?

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.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2