Rn 84 86 Calculate the energy released (per mole) in the nuclear reactions given

Question

Rn 84 86 Calculate the energy released (per mole) in the nuclear reactions given in Question 8. Atomic exact masses are as follows: 222Rn (222.0175777), 218Po (218.0089730), 'He (4.002603254),238U (238.0507882), C (12 (exact)), 244Cf (244.066001), 'n (1.00866),. 10. 11. What is the oxraauon staue or vaiauu II 112 v205 (a) 2 (b) 0 (c) 2 (d) 4 (e) 5 Explain why atomic radius decreases as you go left to right across the periodic table. 12. 13. 14. Arrange the following in order of increasing electronegativity: N, Zr, F, Cu The vapour pressure of a solvent is the amount of gaseous molecules over an open vessel of the solvent. A 50/50 mixture of benzene and toluene has 46.7 Torr of benzene and 13.5 Torr of toluene at STP. What is the pressure of air over this mixture?

Explanation / Answer

For question 10 , reactions are not there.

11. V2O5 ---> 2 (V) + 5 (-2) = 0

V = +5

12. When you go.from.left to.right in period no. Of shell remains same and effective nuclear charge increases due to increase in proton so attraction increases and radius decreases

13. Zr < Cu < N < F

14. P total = p(benzene) + p (toluene)

= p°b xb. + p°t xt

=( 46.7 *0.5) + (13.5* 0.5)

= 30.1 torr

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