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Chemistry
Tutor: None Selected Time limit: 1 Day

1,According to this equation, what volume of F2(g) at 40°C and 2.00 atm is required to react completely with 1.16 L of NH3(g) at 15°C and 1.25 atm?

2,What is the molarity of a 81.8-mL KCl solution which contains 7.66 g of KCl?

3,Calculate the molarity of the following aqueous K2SO4 solution: 4.31 moles of K2SO4 in 1.07 L of solution. 

4,Calculate the molarity of the following aqueous HBr solution: 7.47 moles of HBr in 1.02×103 mL of solution.

Apr 5th, 2015

PV/T=P2V2/T2

2*V/313=1.25*1.16/288

V=O.7879 LITRES.

2.moles of kcl=7.66/74.5

=0.10282

molarity=0.10282/0.0818

=1.256

3. molarity=4.31/1.07

=4.028

4.molarity=7.47/1.02

=7.324

Apr 5th, 2015

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