A chemist adds 270.0 mL of a 8.7*10^-4 M calcium sulfate (Caso) solution to a reaction flask. Calculate the mass in milligrams of calcium sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

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