Which equation represents this nuclear reaction?^1_1 H +^2_1H rightarrow^2_2 He

Question

Which equation represents this nuclear reaction?^1_1 H +^2_1H rightarrow^2_2 He +^1_0n^2_1H +^3_2H rightarrow^4_2He +^1_1n^1_2H +^1_3H rightarrow^2_4He +^0_1n^2_1H +^3_1H +^3_1H rightarrow^4_2He +^1_0n The half life of radium in a solution of radium nitrate is longest in 100 mL of a 1.0 M solution. longest in 1000 mL of a 1.0 M solution. longest in 100 mL of a 0.5 M solution. The same in each of the solutions in (A), (B) and (C). This graph represents the decay of a radioactive isotope. What is its half life? 2 hr 3 hr 4 hr 6 hr Which reaction does not form a new element?^23_10Ne rightarrow ? +^0_-1e^2_1H +^3-1H rightarrow ? +^1_0n^140_38Ce +^1_0n rightarrow ? +^0_0y^10_5B +^1_0 rightarrow ? +^4_2He

Explanation / Answer

37. (d)

38.(d) because radio active decay follows first order kinetics. Hnece it is independent of intial concentration.

39. (B) 3hrs. Because initial amount is 12, time at amout 6 is 3 hours.

40. (C) Because there is no change in the nuclei reacting element it just releases gamma radiation.

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