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Lynna [10]
3 years ago
15

How could you use a model to show the cause-and-effect relationship between Earth's rotation and the apparent motion of the star

s across the night sky?
Chemistry
2 answers:
Masteriza [31]3 years ago
7 0

Question:

How could you use a model to show the cause-and-effect relationship between Earth's rotation and the apparent motion of the stars across the night sky?

Answer:

Gravity? or density because of the pull from the sun.

fomenos3 years ago
5 0
Using a model you can rotate the objects seeing it’s rotation if you know that the earth rotates opposite of the sun then you know that the stars move with the sun by a gravitational pull.
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How many grams of Ca(OH)2are required to make 1.5 L of a 0.81 M solution?
FrozenT [24]

Answer:

Mass = 90.28 g

Explanation:

Given data:

Mass of Ca(OH)₂ = ?

Volume of solution= 1.5 L

Molarity of solution = 0.81 M

Solution:

First of all we will calculate number of moles.

Molarity = number of moles / volume in L

by putting values,

0.81 M = Number of moles / 1.5 L

Number of moles = 0.81 M × 1.5 L

Number of moles = 1.22 mol

Mass of Ca(OH)₂ in gram:

Mass = number of moles × molar mass

Mass = 1.22 mol × 74.09 g/mol

Mass = 90.28 g

5 0
3 years ago
What’s is the mass in grams of 5.90 mol C8H18?
DerKrebs [107]

Mass = 5.90 x 114 = 672.6g.

This can be rounded to <em>673g</em>

<em>C = 12 grams x 8 = 96 grams  </em>

<em>H = 1 gram x 18 = 18 grams  </em>

<em>Total = 96 + 18 = 114 grams in one mole.  </em>

<u>If you have 5.9 moles, multiply this by the weight of one mole (114 grams) = 672.6 rounded to 673 grams in 5.9 moles. </u>

4 0
4 years ago
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Anastaziya [24]

Answer:

343

Explanation:

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The Rocket Club is planning to launch a pair of model rockets. To build the rocket, the club needs a rocket body paired with an
Leni [432]

Answer:

Body 1+ engine 2

Explanation:

Got it from quizlet

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3 years ago
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Units of work would be equivalent to a Newton times a meter.
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