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artcher
28 days ago
10

What is the molarity of 200 ml of solution in which 2.0 moles of sodium bromide is dissolved?

Chemistry
2 answers:
eduard [2.5K]28 days ago
7 0
Molarity is calculated using moles divided by the volume in liters. Convert 200 mL to 0.2 L, then divide 2 moles by 0.2 L.
KiRa [2.7K]28 days ago
4 0

Answer:

The solution's molarity is determined to be 10M.

Explanation:

Molarity refers to the amount of solute in moles per liter of total solution.

Molarity=\frac{moles solute}{L solution}

First, convert the given volume from milliliters to liters.

2.00mL*\frac{1L}{1000mL} =0.2L

Next, substitute the values into the molarity formula:

Molarity = \frac{2.0moles}{0.2L} \frac{of sodium bromide}{of solution}

Molarity = 10M

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What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in Na2[Cr(NH3)
lions [2669]

Answer:

Central metal oxidation state: +2

Coordination number: 6

Overall charge: -2

Explanation:

For the ion complex:

Na₂[Cr(NH₃)₂(NCS)₄]

The central metal is chromium, with NH₃ and NCS as the ligands.

NH₃ acts as a neutral ligand, while NCS carries a negative charge.

The entire complex has a charge of:

2Na⁺ +  [Cr(NH₃)₂(NCS)₄]⁻² → -2

Since each NCS contributes -1 and there are four NCS, the Cr must possess an oxidation state of +2 to achieve an overall charge of -2.

With 2 NH₃ and 4 NCS attached, the coordination number sums to 2+4 = 6

I trust this clarifies the matter!

6 0
29 days ago
When the concentration of solute in a solid solution exceeds its solubility limit, a new solid solution or phase forms that has
eduard [2520]
The answer is true. A solid solution consists of a solid state solution formed by one or more solutes dissolved in a solvent, or a combination of two crystalline solids that coexist within a crystal lattice. Metal alloys, semiconductors, and moist solids are examples of such solid solutions.
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15 days ago
What is the length of inches of a 100 meter soccer field and i need answer in scientific notation
VMariaS [2707]

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19 days ago
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A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the
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Answer:

n=3.0\times 10^{13}

Explanation:

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The formula for calculating charge is:

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Given that: Charge = -4.8\times 10^{-6}\ C

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1 month ago
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Alekssandra [2724]

Answer:1

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