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aleksklad [387]
3 years ago
6

How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 5 to 3?

Chemistry
1 answer:
nata0808 [166]3 years ago
6 0
The Answer is 10 it a little difficult to explain but I’ll try my best
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What is the molarity of a solution in which 7.1 g of sodium sulfate is dissolved in enough water to make 100. mL of solution?
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Answer:

0.50 M

Explanation:

Given data

  • Mass of sodium sulfate (solute): 7.1 g
  • Volume of solution: 100 mL

Step 1: Calculate the moles of the solute

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7.1g \times \frac{1mol}{142.02g} = 0.050mol

Step 2: Convert the volume of solution to liters

We will use the relation 1 L = 1000 mL.

100mL \times \frac{1L}{1000mL} =0.100L

Step 3: Calculate the molarity of the solution

M = \frac{moles\ of\ solute }{liters\ of\ solution} = \frac{0.050mol}{0.100L} =0.50 M

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Explanation:

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