Hydrogen gas generated by the reaction of zinc and hydrochloric acid is collected via water displacement in an inverted graduated cylinder. THe pressure of the gas collected at 23oC is 99.750 kPa. If the reading from the gas collection cylinder is 0.750 L, how many moles of dry hydrogen were collected? The water vapor pressure at 23oC is 2.809 kPa.

What is a property of a double replacement reaction

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.