Chemistry, 26.12.2019 23:31, hannahgrac3
Liquid octane (c8h18) is burned in the constant pressure, adiabatic combustor of an aircraft engine with 40% excess air. the air enters the combustor at 600 kpa and 307c, and the fuel is injected into the combustor at 25c. estimate the temperature at which the products of combustion leave the combustor.
Answers: 3
Chemistry, 21.06.2019 23:20, anggar20
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
Answers: 2
Chemistry, 22.06.2019 07:00, coolkid2041
Calculate the number of moles of ethane in 100 grams
Answers: 3
Chemistry, 23.06.2019 06:40, 1991987
1.) which of the following is a molecule but not a compound? a. he b. f2 c. h2o d. ch4 2.) what is a physical combination of substances? a. a compound b. a molecule c. a mixture d. an element 3.) what is a chemical combination of substances? a. a compound b. an atom c. a mixture d. an element 4.) what is the relationship between the solute and solvent in a solution? a. they form a compound b. they form a mixture c. they form molecules d. they form chemical bonds 5.) the gases in air dissolve in water. what would be one way to reduce the amount of a gas dissolved in water? a. add more water b. reduce the air pressure c. increase the air pressure d. stir the water 6.) how would you determine the solubility of a substance? a. find how well it dissolved various substances. b. find the mass and the volume of the substance. c. find the temperature at which the substance evaporated. d. find how much i was able to dissolve in a solute. 7.) the periodic table organizes all of the kinds of a. molecules. b. compounds. c. atoms. d. ions. 8.)what distinguishes two substances combined to become a compound vs. two substances combined to become a mixture? a. whether they can be easily separated b. whether they chemically bond together c. whether they both are visible d. whether they are heterogeneous 9.) the principle components of air are: n2 78% o2 21% ar 0.95% co2 0.038% this is a solution of a. molecules and atoms. b. molecules. c. compounds and molecules. d. atoms.
Answers: 1
Liquid octane (c8h18) is burned in the constant pressure, adiabatic combustor of an aircraft engine...
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