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vodomira [7]
3 years ago
10

What volume of 0.436 M barium nitrate solution is needed to prepare 240.0 mL of a barium nitrate solution that is 0.300 M in nit

rate ion?
a. 349 mL

b. 82.6 mL

c. 55.0 mL

d. 165 mL

e. 330. mL
Chemistry
1 answer:
Advocard [28]3 years ago
7 0
The correct answer would be A

Explanation: I did the math
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kondor19780726 [428]
<span>when the number of moles Ca = mass of Ca / molar mass of Ca.

and we can get the molar mass of Ca, it is = 40 g/mol

and we have already the mass of Ca (given) = 9.8 g

so, by substitution: the moles Ca = 9.8 g / 40 g/mol

                                                       = 0.245 moles</span>
4 0
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Answer:

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Explanation:

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2 years ago
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Thyroid hormone contains the mineral iodine (option I). Details about thyroid hormone can be found below.

<h3>What is the thyroid hormone?</h3>

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Therefore, the thyroid hormone contains the mineral iodine.

Learn more about thyroid at: brainly.com/question/13856314

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8 0
1 year ago
Acid indigestion is sometimes neutralized with an antacid such as magnesium hydroxide (Mg(OH)2). What products will be released
NemiM [27]

Answer:

Magnesium chloride and water  

Explanation:

Mg(OH)₂ + 2HCl ⟶                MgCl₂                +   2H₂O

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7 0
3 years ago
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Lemur [1.5K]

Answer:

I think B

Explanation:

There are more negative ions than positive ions

6 0
3 years ago
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