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Ulleksa [173]
3 years ago
6

(20 Points)

Chemistry
2 answers:
kogti [31]3 years ago
6 0
A. It is Basic

for example,

NaOH → Na⁺(aq) + OH⁻(aq)
Ba(OH)₂ → Ba²⁺(aq) + 2OH⁻(aq)
Ca(OH)₂ → Ca²⁺(aq) + 2OH⁻(aq)

pH>7
andriy [413]3 years ago
3 0
The answer would be A
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a solution contains 4.5 times 10 to the negative 3 M HCI. Determine the hydroxide concentreation of the solution.
frosja888 [35]
HCl ----------> H(+) + Cl(-)
0,0045-x.........x...........x
0..................0,0045...0,0045

pH = -log[H+]
pH = -log[0,0045]
pH = 2,347

pOH = 14-pH
pOH = 14-2,347
pOH = 11,653

pOH = -log[OH-]
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Answer:

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timurjin [86]

Answer:

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6 0
3 years ago
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aleksandrvk [35]

Answer:

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How many atoms of calcium, Ca would be equal to 5.472 X 104 moles Ca?
Montano1993 [528]
Answer:
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                           Moles  =  Number of Atoms / 6.022 × 10²³   ------- (1)

Data Given;
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Solving eq. 1 for Number of Atoms,

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Number of Atoms  =  3.29 × 10²⁸ Atoms
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