1.What pressure will 2.6 x10 23 molecules of H 2 exert in a 3.9 Lcontainer at 45

Question

1.What pressure will 2.6 x1023 molecules of H2 exert in a 3.9 Lcontainer at 45°C?

2.What volume will 0.780moles of He occupy at STP?

3.How many molecules ofCO2 are contained in a 10.0 L tank at 7.53 atm and 485K?

4.What volume will aballoon occupy at 1.0 atm, if the balloon has a volume of 7.6 L at3.8 atm?

5.What temperature must aballoon, initially at 25C and 2.00 L, be heated in orderto have a volume of 6.00 L?

6.A syringe contains 0.65moles of He gas that occupy 750.0 mL. What volume (in mL) of gaswill the syringe hold if 0.35 moles of Ne is added?

Explanation / Answer

A. 5.7 atm B. 1.7 atm C. 2.9 atm D. 3.4 atm E. 4.6 atm #2 is also wrong answer choicce A. 22.4 L B. 70.0 L C. 43.7 atm D. 17.5 L E. 15.6 L #5 also.. A. 993 K B. 403 K C. 75 K D. 655 K E. 894 K #6 also A. 0.87 L B. 4.9 L C. 1.2 L D. 2.1 L E. 1.9 L maybe that help a little better. thanks so far A. 5.7 atm B. 1.7 atm C. 2.9 atm D. 3.4 atm E. 4.6 atm

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