Chemistry, 27.05.2020 03:02, moomoo2233
Michelle wants to use a model to demonstrate that water flows faster through layers of large pebbles than through layers of sand. She builds her model by attaching a fine screen to one end of a pipe and filling half the pipe with a mixture of sand and large pebbles. She then pours water through the pipe and records how long it takes all the water to flow through the pipe.
Knowing what Michelle wants to demonstrate, identify the problem in her model's design.
A.
The pipe is only half fullāit should be completely filled with the mixture of sand and pebbles.
B.
There is not enough variety in sediment sizeāsediment of other sizes should be mixed with the sand and pebbles.
C.
The order of events is wrongāthe sand and pebbles should be placed in the pipe after the water flows through.
D.
The sand and pebbles are mixed togetherāwater flow through each type of sediment should be demonstrated separately.
Answers: 3
Chemistry, 22.06.2019 14:10, cameronbeaugh
13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.
Answers: 1
Michelle wants to use a model to demonstrate that water flows faster through layers of large pebbles...
Mathematics, 20.08.2020 22:01
Mathematics, 20.08.2020 22:01