Chemistry Homework Questions and Answers

A 475 mL sample of gas is collected over water at 27 degrees C and a total pressure of 675 mm Hg. if the vapor pressure of water at 27 degrees C is 26.7 torr. what is the volume of the gas at standard pressure? How would you use litmus paper to identify an acid and an alkali ? If I have substrate concentrations of 63, 125, 250 and 375 what are the 1/S of them and if I have initial rates of 258, 513, 685 and 855 what is the 1/V of them? On a cold day, a person takes in a breath of 450 mL of air at 86.6 kPa and -10 degrees C. what is the volume of this air in the lungs at 37 degrees C and 650 mm Hg? The mass of 322 mL of hydrogen gas at 4.0 atm and -73 degrees C is 1.21 grams. what is the density of hydrogen gas at STP? What are the steps in balancing equations in chemistry for grade 7 What colour flame does barium produce? What colour flame does calcium produce? What colour flame does copper produce? What colour flame does lead produce? What colour flame does potassium produce? What colour flame does sodium produce? What is covalent bonding? What is ionic bonding? What is litmus paper? What is the vapor pressure at 30 degrees C of a solution of 9.26 g of benzene (C6H6, pure liquid vapor pressure is 155 torr) and 4.26 g of chloroform (CHCl3, pure liquid vapor pressure is 333 torr)? What reaction produces nylon? Which law states that at a consistent temperature, the pressure of gas is inversly proportionate to its volume Which part of a bunsen burner is hottest? Who invented the bunsen burner? Why is soap use to treat a bee sting and vinegar used to treat a wasp sting Ask a new question for this subject Back to subject index