Based on the data below, determine the rate equation for the reaction between A
and B, and the value and units of the rate
constant.

uranium-238 i believe is your answer

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explanation:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.