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The volume of a sample of hydrogen is 798 mL and it exerts 621 mm Hg pressure at -105°C. What volume in mL does it occupy at standard temperature and pressure?​

Calculate the concentration of all species in a 0.165 m solution of h2co3.

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated

Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.