Which of the following quantites would have the greatest mass: one mole of carbon atoms, one mole of helium atoms, one mole of neon atoms? a) one mole of helium atoms b) one mole of carbon atoms c) they would have equal masses. d) one mole of neon atoms

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.

Read "who built the pyramids? ”. leave this link open while you answer the questions throughout the assignment. give at least two reasons why some people claim the pyramids of giza were constructed by aliens.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?