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How many moles of neon (Ne) are there in 5.805 g of Ne? Round your final answer to 4 significant figures.    

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Related questions

Solve the following calculation (0.0393 + 1.02)-1.04 reporting your answer to the correct number of significant figures.

Solve the following problems:

How many atoms of sodium (Na) are there in 8.70 moles of sodium? Report your answer to 3 significant figures.

How many moles of Sr (strontium) atoms are there in 81.20 grams of Sr? Give your answer to the correct number of significant figures.


If an ideal gas sample at 534 torr pressure occupies 345 mL at 25°C, how many moles of that gas are present? Report your answer to 3 significant figures.

If If an ideal gas occupies 736 mL at 45°C and 719 torr, what volume will it occupy at 105°C and 972 torr? Report your answer in mL to 3 significant figures.



A 2.43 g sample of a gaseous compound has a pressure of 496 torr in a volume of 250 mL at 37°C. What is its molar mass? Report your answer to 3 significant figures

An empty flask and stopper is weighed in with a mass of 75.121 grams. To this flask 2 mL of an unknown liquid is added and then heated in a boiling water bath at 96°C. When all of the unknown liquid is vaporized the flask is removed from the bath and cooled. During the cooling the stopper is periodically opened just enough to let air in to equilibrate the internal and external pressures. During the experiment the laboratory barometer reads the pressure in the lab as 648 mm Hg. The flask is then weighed and found to have a mass of 76.036 grams. The volume of the flask is then measured and found to be 271.2 mL.

A) What is the pressure of the vapor in the flask in atm? (Report your answer to 3 significant figures.)

B) What was the temperature of the vapor in K? (Report your answer to 3 significant figures.)

C)What was the volume of the flask in liters? (Report your answer to 4 significant figures.

D) How many moles of vapor are present? Report the answer in scientific notation, using the following format #.## x 10^# moles. (Report your answer to 3 significant figures.) An example would be 1.23 x 10^-2 moles.

E) What was the mass of vapor that was present in the flask? (Report your answer to 3 significant figures.)

F)What is the molar mass of the unknown liquid? (Report your answer to 3 significant figures.)

please help me with whatever you can. thank you lots in advance

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