Chemistry, 06.08.2021 19:30 Theresab2021
Greg, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 42.1 m of rock and soil, which Greg knows from previous experience has an average density of 1150 kg/m'. Greg has available a dump truck with a capacity of Il m' and a maximum safe load of 6600 kg. Calculate the number of trips the dump truck will have to make to haul the customer's load away.
Answers: 1
Chemistry, 21.06.2019 16:40
Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.
Answers: 1
Chemistry, 22.06.2019 00:30
Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.
Answers: 1
Chemistry, 23.06.2019 02:50
Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3ยทxh2o; you should do this also. round your answer to the nearest integ
Answers: 2
Chemistry, 23.06.2019 03:00
What volume does 1.70 ร10โ3 mol of chlorine gas occupy if its temperature is 20.2 ยฐc and its pressure is 795 mm hg?
Answers: 3
Greg, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 42...
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