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Digiron [165]
3 years ago
14

An astronomer wants to study celestial objects with the shortest wavelengths. What kind of telescope should the astronomer use f

or this task?
Chemistry
1 answer:
Leni [432]3 years ago
8 0

Answer:

telescope

Explanation:

i took the test

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Which of the following statements about benzene is true? Multiple Choice
fenix001 [56]

Answer: option a and d

Explanation:

Option A- Benzene undergoes substitution reaction

Example : benzene reacts with chlorine to form chlorobenzene, in the presence of Iron

(iii) chloride as a catalyst

C6H6 + Cl2 ---> C6H5Cl + HCl

Option D- Benzene also undergoes addition reaction

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cyclohexane

C6H6 + 3H2 ---> C6H12

Reasons why Option B isn't the answer

Although benzeme has degree of unsaturation but it's not five degree of unsaturation.

Benzene has 6 carbon atoms and 4 degrees of unsaturation (1 ring and 3 double

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If you work backwards and double the degrees of unsaturation you have 8 degrees of

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Option C - Benzene isn't a saturated hydrocarbon

6 0
3 years ago
Mass of One Water Molecule? The answer says the mass of one water molecule is 2.99 X 10^-23
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The mass of one mole of water it is 18 amu, but you need to find the mass of a molecule of water, therefore you calculate the mass of one mole of water, which is 18 amu and you divided by Avogadro's number which is 6,022 x 10^23. The result is 2,989 x 10^-23. Hope I helped you. If you have any questions ask :) Good luck.
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Andrew [12]

B. crust, middle, core

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**Visible confusion** no problem
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