Chemistry, 29.06.2019 22:00 lacourboud20005
The maximum contaminant level of copper (cu) in drinking water as set by the the environmental protection agency (epa) is 0.0013 g⋅l−1 . express this concentration in parts per million (ppm). assume the density of water is 1.00 g/ml .
Answers: 1
Chemistry, 21.06.2019 15:00
How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.
Answers: 2
Chemistry, 22.06.2019 08:40
Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
Answers: 2
Chemistry, 22.06.2019 13:20
Can someone me with 3 and 4 plz. this is for masteries test.
Answers: 2
Chemistry, 23.06.2019 05:00
What is dhmo? hint: you find it everywhere something is wet..
Answers: 1
The maximum contaminant level of copper (cu) in drinking water as set by the the environmental prote...
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