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3 years ago

Use what you have learned about the types of energy that travel from the Sun to Earth to match each term with its description.

Chemistry

2 answers:

blagie [28]3 years ago

5 0

Answer:infred radiation cuases cancer and eletromagnetic waaves is how the sun travels it heat then visibel light is the light the human can see ultravilight radiation takes for of heat

Explanation:

gavmur [86]3 years ago

4 0

Answer:

Infrared Radiation > Takes the form of heat

Ultraviolet Radiation > Causes Skin Cancer and sunburn

Radiation > Transfer of energy from the sun

Visible Light > Made of colors the eye can see

Electromagnetic Wave > how suns energy travels to Earth

Explanation:

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How many atoms of hydrogen are in 0.500 mol of ch3oh molecules?

cestrela7 [59]

In 1 mol of CH3OH, you have 4 H-atoms (because 3 H-atoms are attached to the C-atom, and one H-atom in the OH group). That means in 0.500 mol of CH3OH, you have 2 H-atoms since it is halved. And then we have Avogadro's constant: 6.02 * 1023.

The question asks for how many hydrogen atoms there are in 0.500 mol CH3OH. Using the numbers that we have (Avogadro's constant and no. of H-atoms), the answer of the question will be something like:

<span>H-atoms in CH3OH = 2 * 6.02 * </span>1023<span> = ~1.2 * 10</span>24

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3 years ago

Naturally occurring neon exists as three isotopes. 90.51% is ne-20 with a mass of 19.99 amu, 0.27% is ne-21 with a mass of 20.99

gregori [183]

The atomic mass of an element is the average relative mass of its atoms as compared with an atom of carbon-12 whose mass is taken as 12. In terms of percentages of different isotopes, the average atomic mass can be determined as follows: $A_{average}$ = ∑( $p_{i}$ X $A_{i}$ )/100. Where, $p_{i}$ is the percentage abundance of isotope with atomic number $A_{i}$ .

So, average atomic mass of neon = $\frac{(90.51 X 19.99) + (0.27 X 20.99) + (9.22 X 21.99)}{100}$ = 20.177 amu.

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3 years ago

Hydrides are compounds made up of hydrogen and metal. Why ammonia has the highest boiling point among the hydrides of elements i

RoseWind [281]

The correct option is D.
The hydrogen atoms that are attached to the nitrogen atom in the ammonia molecule are capable of forming hydrogen bond. The hydrogen bond that exist in the ammonia molecule is the reason why it shows higher boiling point compare to the other hydrides. Hydrogen bond occur in ammonia because ammonia is one of the most electronegative elements.

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sp2606 [1]

Answer:

Explanation:

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Calculate the number of atoms

erastova [34]

Explanation:

13 are the number of atoms

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