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stira [4]
3 years ago
5

The Earth rotates about its axis from west to east. What piece of evidence about the Moon can we use to support this statement?

Chemistry
2 answers:
Debora [2.8K]3 years ago
8 0
The Earth's rotation has no relation to the phases of the moon.
Like everything else in the sky, the moon rises in the east just like the stars, planets, and the sun.
tatiyna3 years ago
3 0

Answer:

The correct answer is "The Moon rises in the east and sets in the west".

Explanation:

The earth rotates on its axis from west to east, the Moon seems to move from east to west through the sky. Seen from above, the Moon orbits the Earth in the same direction as our planet rotates. In this way we can support this statement, just by observing the movement of the moon around the earth and due to the fact that we always observe the same face of the moon.

Have a nice day!

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B. combustion would be the correct option
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A chemist adds of a M zinc nitrate solution to a reaction flask. Calculate the mass in grams of zinc nitrate the chemist has add
weqwewe [10]

corrected question: A chemist adds 135mL of a 0.21M zinc nitrate solution to a reaction flask. Calculate the mass in grams of zinc nitrate the chemist has added to the flask. Round your answer to significant digits.

Answer:

5.37g

Explanation:

0.21M means ; 0.21mol/dm³

1dm³=1L , so we can say 0.21mol/L

if 0.21mol of Zinc nitrate is contained in 1L of water

x   will be contained in 135mL of water

x= 0.21*135*10³/1

=0.02835moles

number of moles=  mass/ molar mass

mass= number of moles *molar mas

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3 0
2 years ago
Which element or ion listed below has the electron configuration 1s22s22p6?
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7 0
3 years ago
How many atoms are in 1.204x10^22 moles of arsenic?
ra1l [238]

Answer:

<h2>0.02 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

n =  \frac{1.204 \times  {10}^{22} }{6.02 \times  {10}^{23} }    \\  = 0.02

We have the final answer as

<h3>0.02 moles</h3>

Hope this helps you

7 0
2 years ago
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