Electron configuration of:
<span>Cr = 1s2 2s2 2p6 3s2 3p6 3d5 4s1 </span>
<span>Cr2+ = 1s2 2s2 2p6 3s2 3p6 3d4 </span>
<span>Cu = 1s2 2s2 2p6 3s2 3p6 3d10 4s1 </span>
<span>Cu2+ = 1s2 2s2 2p6 3s2 3p6 3d9 </span>
<span>Co = 1s2 2s2 2p6 3s2 3p6 3d7 4s2 </span>
<span>Co3+ = 1s2 2s2 2p6 3s2 3p6 3d6
s can max contain 2 electrons.
</span>p can max contain 6 electrons.
d can max contain 10 electrons.
f can max contain 14 electrons.
Answer:
34,6g of (NH₄)₂SO₄
Explanation:
The boiling-point elevation describes the phenomenon in which the boiling point of a liquid increases with the addition of a compound. The formula is:
ΔT = kb×m
Where ΔT is Tsolution - T solvent; kb is ebullioscopic constant and m is molality of ions in solution.
For the problem:
ΔT = 109,7°C-108,3°C = 1,4°C
kb = 1.07 °C kg/mol
Solving:
m = 1,31 mol/kg
As mass of X = 600g = 0,600kg:
1,31mol/kg×0,600kg = 0,785 moles of ions. As (NH₄)₂SO₄ has three ions:
0,785 moles of ions× = 0,262 moles of (NH₄)₂SO₄
As molar mass of (NH₄)₂SO₄ is 132,14g/mol:
0,262 moles of (NH₄)₂SO₄× = <em>34,6g of (NH₄)₂SO₄</em>
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I hope it helps!
Lizard. Any cold-blooded species is ectothermic.
Adrenaline gives you energy and stimulates your heart. When in stressful situations, like survival, you’re body is reacting and releasing this hormone.
Answer:
Yes it does contain thermal energy.
Explanation:
Cold objects have SOME thermal energy because the particles of all matter are in constant random motion.