Answer:
True
Explanation: Imagine the Electrons is by the nucleus which give more energy.
Answer:
B. People live longer than they used to
Explanation:
None of the other answers are correct.
Answer:
i think it is a Cobrotoxin
Answer: 40.1%
Explanation: The mass of calcium in this compound is equal to 40.1 grams because there's one atom of calcium present and calcium has an atomic mass of 40.1 . The molar mass of the compound is 100.1 grams. Using the handy equation above, we get: Mass percent = 40.1 g Ca⁄100.1 g CaCO3 × 100% = 40.1% Ca.
CH4+2O2–>CO2+2H2O
4Fe+3O2–>2Fe2O3
