1. A 750g block of iron was heated using 0.75KJ of energy, if the starter temperature was 29 °C what was the final temperature?
1 208 of ananaw and

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.