What is one characteristic of a sample of matter that indicates it is a pure substance? a. it can be separated using by a physical means, such as filtering. b. the components in a pure substance do not have to be in definite ratios. c. if the composition of a sample varies, the sample is a pure substance. d. if the composition of a sample is fixed, the sample is a pure substance?
Answers: 1
Chemistry, 21.06.2019 20:30
Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
Answers: 2
Chemistry, 22.06.2019 05:00
What forms when chemical reactions combine pollution with sunlight?
Answers: 1
Chemistry, 22.06.2019 13:30
Table sugar completely dissolved in water is an example of a?
Answers: 1
What is one characteristic of a sample of matter that indicates it is a pure substance? a. it can b...
English, 11.10.2019 20:30
Biology, 11.10.2019 20:30
Mathematics, 11.10.2019 20:30
Computers and Technology, 11.10.2019 20:30
Mathematics, 11.10.2019 20:30