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g100num [7]
3 years ago
9

When hydronium and hydroxide neutralize each other as they react in equal amounts, what is true of their molarities? A. Their mo

larities are equal. B. The molarity of hydronium is lower than that of hydroxide. C. The molarity of hydronium is higher than that of hydroxide. D. The molarity of hydroxide is double the molarity of hydronium.
Chemistry
2 answers:
Fed [463]3 years ago
8 0
A. Their molarities are equal.

H₃O⁺ + OH⁻ → 2H₂O

1:1
Naily [24]3 years ago
7 0

The correct answer is A

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4 0
3 years ago
The three naturally occurring isotopes of potassium are 39K, 38.963707u; 40K, 39.963999u; and 41K.The percent natural abundances
sweet-ann [11.9K]

Answer:

The isotopic mass of 41K is 40.9574 amu

Explanation:

Step 1: Data given

The isotopes are:  

39K with an isotopic mass of 38.963707u and natural abundance of 93.2581%

40K with an isotopic mass of 39.963999u

41K wit natural abundance of 6.7302 %

Average atomic mass =39.098 amu  

Step 2: Calculate natural abundance of 40 K

100 % - 93.2581 % - 6.7302 %

100 % = 0.0117 %

Step 3: Calculate isotopic mass of 41K

39.098 = 38.963707 * 0.932581 + 39.963999 * 0.000117 + X * 0.067302

39.098 = 36.33681 + 0.0046758 +  X * 2.067302

X = 40.9574 amu

The isotopic mass of 41K is 40.9574 amu

8 0
4 years ago
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