Chemistry, 25.06.2019 13:30 aubreyfoster
Awebsite promoting the use of alternative energy vehicles and hybrid technologies claims that, \"a typical automobile in the usa uses about 1.5 gallons of gasoline every day, producing about 25 lbs of carbon dioxide.\" to determine the truth of this statement, calculate how many pounds of carbon dioxide are produced when 1.500 gallons of gasoline are combusted. assume that the primary ingredient in gasoline is octane, c8h18(l), which has a density of 0.703 gãâ·ml "1..
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Chemistry, 21.06.2019 15:00
Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 16:50
Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.
Answers: 3
Chemistry, 22.06.2019 17:00
The arrangement of particles is most ordered in a sample of
Answers: 1
Awebsite promoting the use of alternative energy vehicles and hybrid technologies claims that, \"a t...
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