Chemistry, 23.03.2021 20:30 izzyisawesome5232
A researcher uses several procedures to separate a rock sample into different chemicals. A mass of 50 grams of one chemical is produced. If this chemical cannot be separated into other chemicals, then it is best described as
A. a compound
B. a mixture
C. a solution
D. an element
Answers: 1
Chemistry, 22.06.2019 08:30
Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
Answers: 3
Chemistry, 22.06.2019 19:20
15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
Answers: 1
Chemistry, 22.06.2019 21:30
Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.
Answers: 3
A researcher uses several procedures to separate a rock sample into different chemicals. A mass of 5...
Mathematics, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
Geography, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
English, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
Social Studies, 30.07.2019 12:50
Mathematics, 30.07.2019 12:50
Social Studies, 30.07.2019 12:50
Social Studies, 30.07.2019 12:50
Social Studies, 30.07.2019 12:50