All the chemical ingredients to make slime have a mass of 48 grams after we mix all the ingredients together how much mass will the slime have

A. 38 grams
B. 48 grams
C. 58 grams

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!