PLZ HELP THNX U What do the following gases have in common? Ne, Ar, Kr, Xe A. All have the same atomic number. B. All have the same number of electron shells. C. All have 8 electrons in their outer orbit D. All have the same atomic weight

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.

Given the following reaction: c3h8+5o2=3co2+4h20 how many grams of co2 will be produced 7 g of c3h8 and 98 g of o2

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