The hydrogen gas generated when calcium metal reacts with water is collected over water at 20. °c. The volume of the gas is 641 ml and the pressure is 988 mmhg. What is the mass (in grams) of the hydrogen gas obtained? the vapor pressure of water at 20. °c is 17. 54 mmhg.

Driving on the highway can lead you to the hypnosis of a road, a condition of drowsiness or ignorance, you can avoid this condition

Which specimen would best be viewed using a compound light microscope?

Lois and clark own a company that sells wagons. the amount they pay each of their sales employees (in dollars) is given by the expression 12h+30w12h+30w12, h, plus, 30, w where hhh is the number of hours worked and the number of wagons sold. what is the amount paid to an employee who works 666 hours and sells 333 wagons?