Answer:
divide by molar mass (12.01 g)
Explanation:
To find the number of moles of the carbon, divide by molar mass (12.01 g).
The number of moles of a substance is given as;
Number of moles = 
To solve this problem;
since mass of carbon = 45g
Number of moles = 
= 3.75moles
Answer:
5 valence electron
Explanation:
It is because the group number is equal to the valence electron.
Answer: I believe the answer is A. The order of amino acids in the protein.
Explanation:
CaCO₃ is a compound in and of itself thus it is not a polyatomic ion.
Answer: Unstable atoms will lose neutrons and protons as they attempt to become stable, atoms the binding energy is not strong enough to hold the nucleus together
Explanation:
