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ruslelena [56]
3 years ago
5

Why are the days shorter in Winter?

Chemistry
2 answers:
Andrei [34K]3 years ago
8 0

Answer:

During the winter, the sun's rays hit the Earth at a shallow angle. The sun's rays are more spread out, which decreases the amount of energy that hits any given spot. The long nights and short days prevent the Earth from warming up

Explanation:

nekit [7.7K]3 years ago
7 0

Explanation:

because of the weather etc and it also may have to deal with the moon and I'm not sure

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The temperature of a sample of gas at 8.5 atm and 59.2 °C increases to 140.0 °C. If the
labwork [276]

Answer:

since that's the closest option we have

10.6atm

Explanation:

Since volume is constant

P1/T1 = P2/T1

P1 =8.5atm

T1 = 59.2°C = 332.2k

T2 = 140°C = 413k

P2 = ?

8.5/332.2 = P2/413

0.026 = P2/413

P2 = 0.026 x 413

P2 = 10.74atm

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3 years ago
How many moles of copper would be needed to make one mole of cu2o?
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Answer:

Explanation:

You can view more details on each measurement unit: molecular weight of Copper(I) Oxide or grams The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Copper(I) Oxide, or 143.0914 grams.

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What type of bond is formed when two nonmetal atoms get close enough for their orbitals to overlap?
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The type of bond that forms when two nonmetal atoms get close enough for their orbitals to overlap is called a covalent bond. Because both of these atoms are nonmetallic, neither atom has enough electronegativity to give up an electron to each other. What the atoms do, is the overlap their orbitals. The electrons in the shared orbitals can be considered to be in a covalent bond. They are held together by the attraction of both nuclei to the shared electrons. 

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Rank the following solutions from least polar to most polar. Rank on a scale of 1-4: 1 being the least polar and 4 being the mos
Vlada [557]

Answer:

The answer is given below

Explanation:

When electronegativity difference arises between the bonded atoms, then a molecule is polar.

When electros are shared equally between the bonded atoms or when the polar bonds in a bigger molecule cancels out each other, then a a molucule is non polar.

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(b) 25% isopropanol/H2O,----- 3 (third least polar)

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