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Answer:
19 protons, 19 electrons, and 3 neutrons
Explanation:
the atomic number is 19 so the protons are the same, 19, and the electrons are the same as the proton, because protons are positive and electrons are negative so they have to balance out and the neutrons ➗ mass number by the atomic number.
There are 0.0713 (g) of Calcium Phosphate Ca3(PO4)2 in 2.3*10^-4 moles of Calcium Phosphate.
Use the mole ratio: 2 moles of NaN3 : 3 moles of N2
you have : 0.21 moles of NaN3 : x moles N2
Cross multiply: you get 0.3 moles for N2
To find the mass= # of moles * molecular mass
0.3 * 28
= 8.4g
Answer:
(a) MgCl2 consists of Mg2+ and Cl- ions held together by ionic bonding forces;; PCl3 consists of polar molecules, so intermolecular dipole- dipole forces are present..
Explanation:
Well.. Hope it helps you..
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