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pentagon [3]
3 years ago
13

10. If you were running an experiment to determine the temperature at

Chemistry
1 answer:
Wittaler [7]3 years ago
6 0

Answer:

The temperature at which each bean is kept

Explanation:

Independent variable is what YOU CHANGE

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Find it in the teacher desk by tomorrow 7:30

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If it loses an electron, it will become an ion.

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What ion is at a higher concentration in the extracellular fluid than in the intracellular fluid?
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8 0
3 years ago
G determine the concentration of an hbr solution if a 45.00 ml aliquot of the solution yields 0.6485 g agbr when added to a solu
Sunny_sXe [5.5K]

The molecular weight of silver bromide (AgBr) is 187.77 g/mole. The presence of the ions in solution can be shown as- AgBr (insoluble) ⇄Ag^{+} + Br^{-1}.

45.00 mL of the aliquot contains 0.6485 g of AgBr. Thus 1000 mL of the aliquot contains \frac{0.6485}{45}×1000 = 14.411 gm-mole. Thus the solubility product K_{sp}of AgBr = [Ag^{+}]×Br^{-}.

Or, 5.0×10^{-13} = S^{2} (the given value of solubility product of AgBr is 5.0×10^{-13} and the charge of the both ions are same).

Thus S = (5.00×10^{-13})^{1/2} = 7.071×10^{-7} g/mL.

Thus the concentration of Br^{-1} or HBr is 7.071×10^{-7} g/mL.

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How many grams of sodium hydroxide are needed to make 500mLs of a 0.125M NaOH solution?
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