21: potassium has 20 neutrons
22: is d
Answer : The volume of a solution is,
Explanation : Given,
Mass of = 75.0 g
Molar mass of = 125 g/mole
Molarity = 3.5 mol/L
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :
Now put all the given values in this formula, we get:
Therefore, the volume of a solution is,
Answer:
3Li2CO3 + Ca3(PO4)2 → 2Li3PO4 + 3CaCO3
3,1,2,3 are the coefficients.
Explanation:
Li2CO3 + Ca3(PO4)2 → Li3PO4 + CaCO3
Balanced equation is :
3Li2CO3 + Ca3(PO4)2 → 2Li3PO4 + 3CaCO3
The atomic number of zinc is 30 therefore The electronic configuration of zinc is expressed as 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 or in simpler form expressed as [Ar] 3d^10 4s^2. The electronic configuration shows the distribution of the electrons of an atom or a molecule.
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