The activation energy of a reaction is 130.4 kJ, and frequency factor (A) is 2.42 x 1010 sec -1, at what temperature (in Celsius) is the rate constant equal to 0.07878 sec-1

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

Explain what happens at the saturation point when adding salt to water at room temperature.

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!