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What is the molarity of a solution made by dissolving 4.14 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)

.67137, but that wasn't right.

An open-ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 750. mmHg. What is the pressure (in mmHg or torr) of the trapped gas if h =23 cm?

I got 893.462, but that was also wrong. Any help please?

  • Chem -

    mols NaAc = grams/molar mass
    M = mols/0.750L = ? = about 0.06

  • Chem -

    Thanks! Do you think you can help with the second one?

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