Answer:
14
Explanation:
Given parameters:
Number of protons = 6
Number of electrons = 6
Number of neutrons = 8
Unknown:
Mass number = ?
Solution:
The mass number of an atom is the sum of protons and neutrons in an atom;
Mass number = number of protons + number of neutrons
Mass number = 6 + 8 = 14
Answer:
Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas. 2HCl (aq) + CaCO 3(s) CaCl 2 (aq) + CO 2(g) + H 2 O (l).
Answer:
14
Explanation:
There are 4 quantum numbers:
<em>n</em>: principal quantum number - describes the electron shell(varies from 1 to 7);
<em>l</em>: azimuthal quantum number - describes the subshell (varies from 0 to 3);
<em>m</em>: magnetic quantum number - describes the specific orbital (varies from -l to +l passing by 0);
<em>s</em>: spin quantum number - describes the spin of the electron (-1/2 or +1/2).
In each orbital (described by m) the maximum number of electrons is 2, so, for subshell 3, the magnetic numbers are -3,-2,-1,0,+1,+2, and +3. So there are 7 orbitals. The maximum number of electrons that can have n=5 and l= 3 is 14.
2H2+O2→2H2O
We have to be aware that the number of atoms are the same on both reactant side and product side.
Answer:
magnesium sulfate + water + carbon dioxide
Explanation: