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?
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Chemistry, 22.06.2019 05:20, anggar20
Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.
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Chemistry, 22.06.2019 08:00, juliannxkim
Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.
Answers: 2
Chemistry, 22.06.2019 08:30, audrey1256
Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree
Answers: 1
What is one characteristic of a sample of matter that indicates it is a pure substance? a. it can b...
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