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Alex777 [14]
2 years ago
5

Which element may react chemically by losing electrons from both s and d sub levels?

Chemistry
1 answer:
omeli [17]2 years ago
6 0
I'm pretty sure it's Iron or FE
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In the chemical reaction NaHCO3 + CH3COOH → CH3COONa + H2O +CO2, 83 g of sodium bicarbonate reacts with 70 g of acetic acid. Whi
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MNaHCO₃: 23+1+12+(48×3) = 84g
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83g NaHCO₃ react with...........

84g ----- 60g
83g ----- X
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We used 70g CH₃COOH, it' too much.
So, acetic acid is excess reagent, and sodium bicarbonate is limiting reagent.
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B) Amount of CH3COOH is in excess.

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2 years ago
The molecular weight of table salt, NaCl, is 58.5 g/mol. A tablespoon of salt weighs 6.37 grams. Calculate the number of moles o
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What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M methylamine, CH3NH2, with 20.00 mL of 0.10 M methylammonium c
olya-2409 [2.1K]

Answer:

pH=10.97

Explanation:

the solution of methyl amine with methylammonium chloride will make a buffer solution.

The pH of buffer solution can be obtained using Henderson Hassalbalch's equation, which is:

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pH = 14- pOH

Let us calculate pOHpOH=3.43+ (-0.397)=3.03

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[Salt] = [methylammonium chloride] = 0.10 M (initial)

After adding base

[salt] = \frac{molarityXvolume}{finalvolume}=\frac{0.1X20}{(20+50)}= 0.0286M

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After mixing with salt

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pKb= -log[Kb]= 3.43

Putting values

pOH = 3.43+log(\frac{[0.0286]}{0.0714}

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2 years ago
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When 5.00 g of FeCl3 . xH2O are heated, 2.00 g of H20 are driven off. Find the chemical formula and the name of the hydrate
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