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ASHA 777 [7]
3 years ago
10

Which of these best explains why the sun appears to move across the sky each day?

Chemistry
2 answers:
Crank3 years ago
8 0
I pretty sure is D, because earth rotates around the sun
ElenaW [278]3 years ago
4 0

Answer:

A

Explanation:

A is day and night, which is when we see the sun move

D is the 4 seasons

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Agree or disagree? Explain (2 ideas, 2 examples)
yawa3891 [41]

Answer:

Agree this is correct if it not blame me

6 0
3 years ago
What is the balenced formula for C3H8+O2
balandron [24]

C3H8  +   5O2  ----->   3CO2  +   4H2O

This is propane  burning in air or pure oxygen.

4 0
3 years ago
G. Amount of charge required to reduce
Nady [450]

Answer:

\boxed{\text{c) 4 F}}

Explanation:

1. Write the skeleton equation for the half-reaction

NO₃⁻ ⟶ N₂O

2. Balance all atoms other than H and O

2NO₃⁻ ⟶ N₂O

3. Balance O by adding H₂O molecules to the deficient side.

2NO₃⁻ ⟶ N₂O + 5H₂O

4. Balance H by adding H⁺ ions to the deficient side.

2NO₃⁻ + 10H⁺ ⟶ N₂O + 5H₂O

5. Balance charge by adding electrons to the deficient side.

2NO₃⁻ + 10H⁺ + 8e⁻ ⟶ N₂O + 5H₂O

The amount of charge required to reduce 2 mol of NO₃⁻ is 8 F

\text{The amount of charge required to reduce 1 mol of NO$_{3}^{-}$ is \boxed{\textbf{4 F}}}

4 0
3 years ago
Read 2 more answers
Which is NOT part of a normal microscope?<br> a.ocular<br> b. nosepiece<br> c.stage<br> d.objective
Evgesh-ka [11]

Answer:

I believe it is a Nose piece

Explanation:

3 0
3 years ago
Read 2 more answers
17 Two substances in a mixture differ in density and particle size. These properties can be used to(1) separate the substances
belka [17]
If they're different sizes and densities, you are able to separate the substances. 
6 0
3 years ago
Read 2 more answers
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