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Slav-nsk [51]
2 years ago
15

When light strikes a transparent material, most of the light is absorbed or reflected.

Chemistry
2 answers:
tresset_1 [31]2 years ago
7 0

The answer is false........

Monica [59]2 years ago
4 0
When light strikes a transparent material, most of the light passes through it it doesn't absorb or reflect it 
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A student prepares a 100.0 mL solution using 44.7 grams of potassium nitrite. They then take 11.9 mL of this solution and dilute
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Answer:

0.52 g of KNO₃ are contained in 19.7 mL of diluted solution.

Explanation:

We can work on this problem in Molarity cause it is more easy.

Molarity (mol/L) → moles of solute in 1L of solution.

100 mL of solution = 0.1 L

We determine moles of solute: 44.7 g . 1mol /101.1 g = 0.442 mol of KNO₃

Our main solution is 0.442 mol /0.1L = 4.42 M

We dilute: 4.42 M . (11.9mL / 200mL) = 0.263 M

That's concentration for the diluted solution.

M can be also read as mmol/mmL, so let's find out the mmoles

0.263 M . 19.7mL = 5.18 mmol

We convert the mmol to mg → 5.18 mmol . 101.1 mg / mmol = 523.7 mg

Let's convert mg to g → 523.7 mg . 1 g / 1000 mg = 0.52 g

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A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the table below
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Solid A contains only Covalent bonds and solid B only contains Ionic bonds. I know this because the appearance, solubility, and conductivity of solid A describes Covalent bonds.

Explanation:

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. Which of these is an example of a scientific observation? *
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Answer:

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Explanation:

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