Chemistry, 26.05.2020 18:57 eldiamonte
Phosphine, PH3PH3 , is a colorless, toxic gas that is used in the production of semiconductors as well as in the farming industry. When heated, phosphine decomposes into phosphorus and hydrogen gases. 4PH3(g)⟶P4(g)+6H2(g)4PH3(g)⟶P4(g)+6 H2(g) This decomposition is first order with respect to phosphine, and has a half‑life of 35.0 s at 953 K. Calculate the partial pressure of hydrogen gas that is present after 79.4 s79.4 s if a 4.60 L4.60 L vessel containing 2.57 atm2.57 atm of phosphine gas is heated to 953 K
Answers: 1
Chemistry, 21.06.2019 21:30
The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?
Answers: 1
Chemistry, 22.06.2019 12:30
What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h
Answers: 2
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Phosphine, PH3PH3 , is a colorless, toxic gas that is used in the production of semiconductors as we...
Social Studies, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
Mathematics, 23.04.2020 01:53
History, 23.04.2020 01:53