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andre [41]
2 years ago
14

I GIVE MORE POINTS WHO ANSWER THIS QUESTION. Which option describes a wavelength of light? (1 point) O a distance between two si

milar points on a wave of light O a type of visible light O an object that makes light bend or bounce O a heated atom that forms light​
Chemistry
1 answer:
Mkey [24]2 years ago
8 0

Answer:

It's the first option. A distance between two similar points on a wave of light.

Explanation:

On a wavelength chart, where you measure the rate at which the light travels at its distance from the source. You have two points to compare to.

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What is the molality of a solution containing 10.0 G of NA2 S04 and 1000.0 G of water
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Explanation:

1 literThe total of water is equal to 1000.0 g of water

we need to find the molality of a solution containing 10.0 g of dissolved in  Na₂S0₄1000.0 g of water

1. For that find the molar mass

Na:  2 x 22.99= 45.98

S:  32.07

O:  4 x 16= 64

The total molar mass is 142.05

We have to find the number of moles, y

To find the number of moles divide 10.0g by 142.05 g/mol.

So the number of moles is 0.0704 moles.

For the molarity, you need the number of moles divided by the volume. So, 0.0704 mol/1 L.

The molarity would end up being 0.0704 M

The molality of a solution containing 10.0 g of Na2SO4 dissolved in 1000.0 g of water is  0.0704 Mliter

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How many grams are 0.5 moles of NaCl???
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