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A sample of a gas weighs 2.963 g and has a volume of 1.0e+03 mL at 734 torr and 35°C. What is its molar mass? Could a retired NASA astronaut, lets say 80 years old or so, land a large commercial plane in an emergency situation ? Is it safe to cut two rods of steel about 20cm long each In the old concrete of a cylindered stair ? How do we conclude if our data is statistically significant from standard deviation? A number is divided by 9. When the quotient is multiplied by 6, the product is 108. What is the number?

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