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Aleks04 [339]
3 years ago
14

Read the excerpt from Levitt and Dubner’s Freakonomics.

Chemistry
2 answers:
VARVARA [1.3K]3 years ago
5 0

Answer:

The answer is D

Explanation:

ella [17]3 years ago
5 0

Answer:

its letter D..

to lend credibility and additional support to their conclusion

Explanation:

just took the quiz

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U
Romashka-Z-Leto [24]

Answer:

the answer is produces protein which humans can eat?

4 0
3 years ago
Read 2 more answers
2. Water can be understood as both yin and yang. Challenge: how many ways can you explain why ?
GuDViN [60]

Water can be understood as both yin and yang. The number of ways Yin and Yang can be explained is in numerous ways.

Yin and Yang explain how to exist in harmony and in balance with nature. Yin and Yang are not distinct entities, but rather two extremes of a spectrum. Everything Yin includes a trace of Yang. Also, everything Yang contains a trace of Yin. They are always in connection with one another.

The yin is the physical aspect of nature and the yang is the forces surrounding these physical aspects.

Some of the ways in which Yin and Yang can be explained are as follows:

  • Yin and Yang can be explained from the water, whereby the water is the Yin while the wind carrying the water waves is known as the Yang.

  • In the body, the Yin shows the anatomy and structure of the body while the Yang explains the psychological functioning of the body.

Disruption in either Yin or Yang can cause an imbalance in nature.

Therefore, we can conclude that the number of ways in which we can explain the Yin and the Yang is numerous.

Learn more about nature here:

brainly.com/question/23250589?referrer=searchResults

5 0
2 years ago
Give me the explanation of <br> Chloroplast.
jasenka [17]

Answer:

Chloroplast is an organelle that is usually present in plant cells. Chloroplasts measure between 3-10 micrometers. Chloroplasts are surrounded by the envelope of two phospholipid membranes. They have pigment molecules inside them which are arranged for efficient light absorption from the Sun.

During Photosynthesis, the sunlight breaks the water molecules, and the reaction produces glucose and oxygen gas

7 0
3 years ago
Read 2 more answers
An experiment requires 54.6 g of ethylene glycol, a liquid whose density in SI units is 1114 kg/m3. Rather than weigh the sample
laila [671]
Answer: 49.0 cm^3

Explanation:

1) formula: density = mass / volume

=> volume = mass / density

2) mass (given) = 54.6 g

3) density (given) = 1114 kg / m^3

conversion of units: 1114 kg/ m^3 * 1000 g/kg * 1 m^3 / (1,000,000 cm^3) = 1.114 g/cm^3

4) calculation:

volume = 54.6 g / 1.114 g/cm^3 = 49.0 cm^3
5 0
3 years ago
Read 2 more answers
Calculate the total heat required (in joules) to convert 3.95 grams liquid ethanol (C2H5OH) at 25.0 °C to gas at 95.0 °C, given
kumpel [21]

Answer:

The total heat required is 4088.6 J

Explanation:

We have three processes which involve heat absorption. We have to calculate the heat of each process and then to calculate the total heat.

1- liquid ethanol is heated from 25ºC (298 K) to the boiling point 78.5ºc (351.5 K). We use specifi heat of liquid ethanol to calculate the heat absorbed in this part:

H1= m x Sh x ΔT

H1= m x Sh x (Tfinal - Tinitial)

H1= 3.95 g x 2.45 J/g.K x (351.5 K -298 K)

H1= 517.7 J

2- State change: liquid ethanol is vaporized it turns gaseous ethanol The process occur at constant temperature (78.5ºC= 351.5 K). We need the molecular weight of ethanol (2 x 14 + 5 + 16 + 1= 46 g/mol) to cancel mol unit:

H2= m x ΔHvap x 1/Mw

H2= 3.95 g x 40.5 KJ/mol x 1 mol/46 g

H2= 3.477 KJ= 3477 J

3- Gaseous ethanol is heated from 78.5ºC to a final temperature of 95ºC (368 K). We use the specific heat of gaseous ethanol:

H3= m x Sh x ΔT

H3= 3.95 g x 1.43 J/g.K x (368 K - 351.5 K)

H3= 93.2 J

The total heat required is calculated as follows:

Htotal= H1 + H2 + H3

Htotal= 517.7 J + 3477.7 J + 93.2 J

Htotal= 4088.6 J

6 0
3 years ago
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