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Chlorine, 15 g, is contained in a vessel with a volume of 0.80 dm3 at 330 K. Calculate the pressure exerted when the chlorine is treated as a perfect (ideal) gas giving your answer in terms of kPa

PV=nRT V=0.8 dm 3 =0.8 x 10 -3 m 3 P= nRT/V R= 8.31 J K -1 mol -1 T= 330 K n= mass/mr n = 15 g/ (2x35.5 g mol -1 ) n = 0.212 mol P = (0.212 mol x 8.31 J K -1 mol -1 x 330 K)/ 0.8 x 10 -3 m 3 P= 726000 Pap=72...
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Answered by Harry G. • Chemistry tutor
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How can natural selection and isolation lead to speciation?

What is speciation?When a new and distinct species evolves from an ancestor speciesReproductively isolated from the ancestor/other species2. How does natural selection work?a. Population of individuals, with...
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Answered by Laura P. • Biology tutor
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why is (x+y)^2 ≠ x^2 + y^2

Because if we simply expand (x+y) 2 we'd get x 2 +y 2 +2xy which shows that there's an extra term which is 2xy. another practical way to check your work and see why LHS ≠ RHS is by substituting random number...
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Answered by Jamal H. • Maths tutor
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what should I include in my personal statement

You should include about why you want to do the course you are interested in, for me it was medicine. For a medicine personal statement for example, the university is looking for people who are deeply passio...
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How do I write an HL paper 3?

Use the first 5 minutes wisely. You're not allowed to write anything down yet, so read through the questions.Read the questions carefully - you have five full minutes. Make sure you read them all through car...
EW
Answered by Emily W. • History tutor
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