PLEASE HELP!!!

Chemistry

2 answers:

IrinaVladis [17]3 years ago

6 0

Hi the answer is 100x I hope that helps

cestrela7 [59]3 years ago

4 0

Answer:

Magnifying power = 25

Explanation:

Magnification power (M) of a telescope is a measure of the extent to which it enlarges the object under view. It given in terms of the ratio of the focal length of the telescope objective to that of the eyepiece

$M = \frac{objective\ focal\ length}{eyepiece\ focal\ length}-----(1)$

The f/ratio measures the light gathering power of a lens. It is expressed in terms of the focal length of the lens divided by its diameter.

$f/ratio = \frac{focal\ length}{diameter} ------(2)$

It is given that:

eyepiece focal length = 2-inch

f/ratio = 10

Diameter of the objective = 5-inch

Based on eq(2), the focal length of the objective would be:

$focal\ length = f/ratio * diameter = 10*5 = 50\ inches$

Based on eq(1), the magnifying power would be:

$M = \frac{50}{2} = 25$

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Construct a three-step synthesis of trans-2-pentene from acetylene by dragging the appropriate formulas into the bins. Note that

adelina 88 [10]

Answer:

The three-step synthesis of trans-2-pentene from acetylene is as follows.

Step -1: Formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkanes.

Step -2: Formation terminal alkyne to nonterminal alkynes.

Step -3: Formation of trans-pent - 2-pent-ene by reduction.

Explanation:

Synthesis of trans-pent-2-yne from ethyne takes place is mainly a three step synthesis which involves formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkane. Second step involves the further alkylation of terminal alkynes to higher order nonterminal alkynes and the third step involves the formation of trans-2-ene by dissolving reduction method.

The chemical reaction of each step of chemical reactions is as follows.