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Ulleksa [173]
3 years ago
13

PLZ HELP ASAP !!!!!!

Chemistry
2 answers:
frosja888 [35]3 years ago
6 0

Answer: Option (B) is the correct answer.

Explanation:

Radiation involves transfer of energy or heat with the help of electromagnetic waves.

For example, radiations from Sun help in transfer of energy or heating of object on which it falls. Like, when radiations are falling on a metal rod then after sometime the rod becomes hot due to absorption of radiations from the Sun.

Thus, we can conclude that Sunlight travels through space without the aid of fluids or solids describes how heat is transferred by radiation

ICE Princess25 [194]3 years ago
5 0

Answer:

C. Sunlight travels through space without the aid of fluids or solids.

Explanation:

I took the test here is proof:

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Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 25.9 g of Fe reacts
zhuklara [117]
The balanced chemical reaction would be

<span>4Fe(s) + 3O2(g) ---> 2Fe2O3(s) 

We are given the amount of Fe to be used in the reaction. We use this as the starting point for the calculations. We do as follows:

25.9 g Fe (1 mol / 55.85 g) ( 2 mol Fe2O3 / 1 mol Fe ) (159.69 g / mol ) = 262.48 g Fe2O3 produced</span>
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3 years ago
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What is the difference in atomic structure between Lead-205 and Lead-208?
Nataly_w [17]

Answer:

  the number of neutrons in the nucleus

Explanation:

The mass number 205 is the total number of protons and neutrons in the nucleus. Lead has 82 protons, so a mass number of 205 indicates a nucleus with 123 neutrons.

Similarly, the mass number 208 indicates a lead nucleus with 126 neutrons.

The difference in atomic structure is the difference in the number of neutrons in the nucleus.

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3 years ago
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telo118 [61]

The series which is in order of increasing boiling point is CH3CH2CH3 CH3COCH3 CH2CH2CH3OH

However, the boiling point of an organic substance is the temperature at which the vapor pressure of the liquid organic substance equals the pressure surrounding the liquid and the liquid changes into a vapor.

<h3>What are organic compounds?</h3>

Organic compounds are substance containing carbon and hydrogen. Some few organic compounds include:

  • Alkanes
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  • Alkanols
  • Alkanals
  • Alkanones
  • Esters
  • Amines

So therefore, the series which is in order of increasing boiling point is CH3CH2CH3 CH3COCH3 CH2CH2CH3OH

Learn more about organic compounds:

brainly.com/question/704297

8 0
1 year ago
Help im stuck on a problem
Natalka [10]
D: The atomic mass number
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3 years ago
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Fruit juice when boiled taste sweeter than sucrose because ​
irina1246 [14]

Answer :see explanation

Explanation:

the sweet carbohydrate in fruit is not sucrose , it is fructose.

and fructose tastes sweeter than sucrose

fructose and glucose minus water equals sucrose

and fructose is sweeter than glucose

6 0
2 years ago
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