Answer:
Lithium's mass number would decrease by 1
Explanation:
This is late but for anyone else who needs it...It's D. Far left
Answer:
I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."
Explanation:
I remember from last year but I'm not totally sure. Good luck!
Answer:
100 j
Explanation:
bascially u j subtract 50 from 150 because the system lost 50 j but theres 150 in its surroundings
I would think the answer would be C. Based off of what I've learned and heard. Sorry if it's not the correct answer though.
