lightsofthedarkness
17.04.2021 •
Chemistry
How many calories are in 3 grams of peanuts if the following data are collected?
Mass of peanut burned = 0.75 g
The volume of water heated = 50 mL
Temperature change = 14.5 °C
a) 2900 cal
b) 43.5 cal
c) 10.88 cal
d) 725 cal
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Ответ:
nucleus contains protons and atom is neutral
Explanation:
as atom contains equal amount of protons and electrons