The correct answer is gonna be C) A lithium cation ion is smaller
A lithium cation has lost its valence electrons, which causes the remaining electrons to be pulled in stronger by the positive charge in the nucleus. As they get closer to the nucleus, the overall size of the atom is decreased.
Answer:
(See explanation for further details)
Explanation:
1) The quantity of moles of sulfur is:
2) The number of atoms of helium is:
3) The quantity of moles of carbon monoxide is:
4) The number of molecules of sulfur dioxide is:
5) The quantity of moles of sodium chloride is:
6) The number of formula units of magnesium iodide is:
7) The quantity of moles of potassium permanganate is:
8) The number of molecules of carbon tetrachloride is:
9) The quantity of moles of aluminium is:
10) The number of molecules of oxygen difluoride is:
Answer:
18.9 moles
Explanation:
We have the following data:
V = 50 L
P = 12.4 atm
T= 127°C + 273 = 400 K
R = 0.082 L.atm/K.mol (it is the gas constant)
We use the ideal gas equation to calculate the number of moles n of the gas:
PV = nRT
⇒ n = PV/RT = (12.4 atm x 50 L)/(0.082 L.atm/K.mol x 400 K) = 18.9 mol
Answer:
60
Explanation:
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