Chemistry, 23.03.2021 22:20 iSODREW7869
1)A sample of oxygen gas occupies 1.00 liter at 1.00 atmosphere (atm) of pressure. If the temperature remains constant, and the pressure on the oxygen gas is increased to 3.00 atmospheres, what is the new volume?
2)At STP, 0.280 L of a gas weighs 0.400 g. Calculate the molar mass of the gas
3)The density of a gas is 1.43 g/mole at STP. What is the gas?
4)A gas evolved during the fermentation of sugar was collected at 22.5°C and 702 mmHg. After purification its volume was found to be 25.0 L. How many moles of gas were collected?
5)Calculate the number of moles of CO2 in a 846 mL container at 76 oC and 3.5 atm
Answers: 3
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The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of
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You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use
Answers: 1
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