Steel tank containing helium
A steel tank containing helium is heated to 555?C. If you could look into the tank and see the gas molecules, what would you observe?
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A graduated cylinder contains 110. mL of water. A 10.0 g piece of iron (density = 7.86 g/cm3) and a 18.9 g piece of lead (density = 11.3 g/cm3) are added. What is the new water level in the cylinder?
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Boron has two naturally occuring isotopes,, 10B (19.9%) and 11B(80.1. althought the b2 molecule doesn not exist naturally on earth, it been been produced in the laboratory and been observed in stars.(A) how many molecules are possible? (b) what ar
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
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