Carbon has 4 valence electrons, oxygen has 6
Answer:
If you have 20.8 grams of zinc, you would around 0.318 moles
Explanation:
1 mole of Zn is around 0.015295.
When you multiply 0.015295 and 20.8, you would get around 0.318 moles so:
1 mole Zn = 0.015295
20.8 × 0.015295 = 0.318
a) 1 mole of Ne
b) i/2 mole of Mg
c) 1570 moles of Pb.
d) 2.18125*10^-13 moles of oxygen.
Explanation:
The number of moles calculated by Avogadro's number in 6.23*10^23 of Neon.
6.23*10^23= 1/ 6.23*10^23
= 1 mole
The number of moles calculated by Avogadro's number in 3.01*10^23 of Mg
3.2*10^23=1/6.23*10^23
= 1/2 moles of Pb.
Number of moles in 3.25*10^5 gm of lead.
atomic weight of Pb=
n=weight/atomic weight
= 3.25*10^5/ 207
= 1570 moles of Pb.
Number of moles 4.50 x 10-12 g O
number of moles= 4.50*10^-12/16
= 2.18125*10^-13 moles of oxygen.
Potassium and Nitrate ions are spectator ions in the reaction:
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<h3>What are spectator ions?</h3>
Ions that are not involved in the actual chemical reaction are called spectator ions.
A precipitation reaction occurs when two ionic compounds react to produce a precipitate and an insoluble substance which stays in the solution as a spectator ion.
Hence, Potassium and Nitrate ions are spectator ions in the reaction:
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Learn more about the spectator ions here:
brainly.com/question/14050476
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