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Minchanka [31]
3 years ago
13

Charlie is doing a scientific investigation about the properties of light energy. For his experiment, he points a flashlight at

a mirror and then at a basketball. Which of the following best describes what Charlie would observe?
A The light traveled through both objects and refracted which made them appear bigger.
B The light was completely absorbed by both objects, and he could see white and blue.
C When the flashlight was pointed at the mirror, the light reflected in the same direction. When the flashlight was pointed at the basketball, the light was reflected in different directions.
D When the flashlight was pointed at the mirror, the light was absorbed. When the flashlight was pointed at the basketball, the light was refracted in a different direction.
Chemistry
2 answers:
matrenka [14]3 years ago
7 0

Answer:

it would be A.

Explanation:

MA_775_DIABLO [31]3 years ago
5 0
Most likely be answer A
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The atomic number of lead (Pb) is 82. Its mass number is 207. How many protons, neutrons, and electrons does this neutral atom o
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3 years ago
A compound has a percent composition of 38.7% carbon, 9.76% hydrogen, 51.5% oxygen.
goldenfox [79]

The molecular formula of the compound that has a percent composition of 38.7% carbon, 9.76% hydrogen, 51.5% oxygen is C2H6O2.

<h3>How to calculate molecular formula?</h3>

The molecular formula can be calculated from the empirical formula. The empirical formula of the compound is calculated as follows:

  • C = 38.7% = 38.7g
  • H = 9.76% = 9.76g
  • O = 51.5% = 51.5g

Next, we convert the mass to moles by dividing by their atomic mass:

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  • H = 9.76 ÷ 1 = 9.76mol
  • O = 51.5÷ 16 = 3.22mol

Next, we divide by the smallest (3.22)

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Hence, the empirical formula of the compound is CH3O

If the molar mass of the compound is 62g/mol;

(CH3O)n = 62

31n = 62

n = 2

(CH3O)2 = C2H6O2

Therefore, the molecular formula of the compound that has a percent composition of 38.7% carbon, 9.76% hydrogen, 51.5% oxygen is C2H6O2.

Learn more about molecular formula at: brainly.com/question/14425592

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