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vovangra [49]
3 years ago
5

Question 2 (2 points) Question 2 Unsaved Why does a blue shirt look blue? Choose the BEST explanation. Question 2 options: All w

avelengths of light are absorbed by the shirt. The shirt absorbs the blue wavelengths. The shirt reflects all wavelengths of light. The shirt reflects the blue wavelengths. Question 3 (2 points) Question 3 Unsaved Why is charcoal black? Question 3 options: Charcoal absorbs all wavelengths of light that fall on it. Charcoal reflects black-colored light. Charcoal reflects all wavelengths of light that fall on it. Charcoal has a black-colored pigment. Question 4 (2 points) Question 4 Unsaved Which color has the longest wavelength? Question 4 options: Blue Red Purple Yellow Question 5 (2 points) Question 5 Unsaved Which color has the highest frequency? Question 5 options: Yellow Purple Blue Red Question 6 (2 points) Question 6 Unsaved If white light shines on an object and the red, orange, green, blue, indigo, and violet light is absorbed. What color does your eye see? (hint: see what color is missing) Question 6 options: White Red Purple Yellow Question 7 (2 points) Question 7 Unsaved Which statement is TRUE about white light? Question 7 options: It makes all objects appear white. It can be seen when all colors are absorbed. It contains all of the waves of the electromagnetic spectrum. It contains all of the wavelengths of the visible light spectrum.
Chemistry
1 answer:
Mazyrski [523]3 years ago
5 0
1 . Each color has a different wavelength allowing the eye to see it.2 . The shirt reflects the blue wavelengths.
3 . Charcoal absorbs all wavelengths of light that fall on it4 . Red
5 . Purple 6 . Yellow7 . It contains all of the wavelengths of the visible light spectrum.
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The smallest unit of an element that retains all the characteristics of that element is called a(n)
Maksim231197 [3]
<span>The smallest unit of an element that retains all the characteristics of that element is called an A. atom.
Atoms consist of protons, electrons, and neutrons, but they are particles and don't have the characteristics of the element which is why D is incorrect. B and C are not the smallest units - atoms are smaller than them.
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3 0
3 years ago
Stannum has a body centered tetragonal with lattice constant, a = b = 5.83A and c = 3.18A. If the atomic radius is 0.145 nm, det
Fed [463]

Answer:

the atomic packing factor of Sn is 0.24

Explanation:

a = b = 5.83A and c = 3.18A.

Volume of unit cell = a²c

= (5.83)² *  3.18 * 10⁻²⁴ cm³

= 1.08 * 10⁻²²cm³

Volume of atoms =

2 \times  \frac{4}{3} \pi r^3

(∴ BCC, effective number of atom is 2)

Volume of atoms =

2 * \frac{4}{3} *3.14*(0.145*10^-^7cm)^3

= 2.55*10⁻²³cm³

\text {Atomic packing factor}=\frac{\text {volume occupied by atom}}{\text {volume of unit cell }}

=\frac{2.55*10^-^2^3}{1.08*10^-^2^2} \\\\=0.24

<h3>therefore, the atomic packing factor of Sn is 0.24</h3>
4 0
3 years ago
Which organic compound is correctly matched with the subunit that composes it?
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It is the Starch-glucose. Glucose is a solitary sugar particle that your body can retain specifically in the digestive system. Sucrose and starches are starches shaped by at least two sugars reinforced together. The sugars in sucrose and starch must be separated into glucose particles in the gastrointestinal tract before your digestive organs can assimilate them.
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The ph3 molecule is polar. does this offer experimental proof that the molecule cannot be planar? explain.
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<span>Answer: if it was planar the center of the negative forces and the center of the positive forces would be at the same place, meaning no di-poles would form so it wouldnt be polar. as it is polar it therefore cannot be planar. the neagative center(pole) is above the the positive one due to the pair of unbonded electrons.</span>
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Which electromagnet would have the most strength?
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The one with 20 coils as it can generate more electricity. 
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