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3 years ago

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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2000 millimoles of AlCl₃

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 1.8 L

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Next, we shall determine the number of mole of AlCl₃ in the solution.

This can be obtained as follow:

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Number of mole of AlCl₃ =?

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Number of mole of AlCl₃ = 1.1 × 1.8

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1 mole = 1000 millimoles

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1.98 mole = 1.98 mole × 1000 millimoles / 1 mole

1.98 mole = 1980 millimoles

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Explanation:

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3 years ago

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Answer : False, there will be two lithium and one oxygen atoms in a unit molecular structure of lithium oxide.

Explanation:

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4 0

3 years ago

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