Different explanations that lead to the same result
-You need to substract the number of protons from the mass number.
-Mass number - atomic number= number of protons
-Following this equation:
CARBON
atomic number= 6
mass number= 12
mass number= protons + neutrons
12= 6 + x
x= 12-6
x= 6
Answer:
.000064565
Explanation:
H3O+=10^-pH
- Hope that helps! Please let me know if you need further explanation.
Answer:
0.6022×10²³ molecules
Number of moles = 0.1 mol
Explanation:
Given data:
Mass of HCl = 3.65 g
Number of molecules = ?
Number of moles = ?
Solution:
Number of moles:
Number of moles = mass/molar mass
Number of moles = 3.65 g/36.45 g/mol
Number of moles = 0.1 mol
Number of molecules:
1 mole of any substance contain 6.022×10²³ molecules
0.1 mol × 6.022×10²³ molecules/ 1 mol
0.6022×10²³ molecules
Answer:
The mass % of the solution is 10.51%.
Explanation:
Mass of solute i.e. RbI = 96.4 g
Volume of the solution = 865 mL
Mass of the solution = m
Density of the solution = d = 1.06 g/mL
The mass % of the solution:
