Chemistry, 30.01.2020 01:50 LaughingAlanna
Which of the following materials is the least porous? a. loosely packed gravel b. sorted sand and rock c. unsorted sand and rock d. large pebbles and boulders
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Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water
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One does not belong why? ice, gold ,wood ,diamond and table salt
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Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
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Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
Answers: 1
Which of the following materials is the least porous? a. loosely packed gravel b. sorted sand and r...
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