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maks197457 [2]
4 years ago
14

Which of the following is an example of how science can solve social problems? It can stop excessive rain from occurring. It can

identify the sources of polluted water. It can control the time and day when cyclones happen. It can reduce the frequency of severe weather conditions.
Chemistry
2 answers:
Arada [10]4 years ago
5 0

Answer: It can identify the sources of polluted water.

Scientific innovations and researches have been proved to be beneficial in solving the day to day social problems such as household practices such as cooking, washing of cloth, industrialization and conservation of the environment.

It can identify the sources of polluted water is the correct example of how science can solve social problems. The source of pollution can be identified by tracing back it's origin and application of filters and purifiers can help in controlling the pollution.

myrzilka [38]4 years ago
4 0
Science does not have a way to control climate and weather conditions, particularly for the short term disturbances. What is possible is to establish sources of polluted water.

The other three, preventing excessive rain, the schedule of cyclones, and the frequency of severe weather conditions, are not under human control.
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A mass spectrum of an organic compound shows the relative abundances of M to be 40.58% and M 1 to be 7.022%. Assuming the peaks
sveticcg [70]

Answer:

The number of carbon atoms in the organic compound is 16.

Explanation:

The relative intensity of M + 1 peak (relative to M = 100) in organic compounds can be predicted by the following formula:

[M + 1] = (number of C x 1.07) ---------------------------------------------------- (1)

This formula can also be used to determine the number of carbon from the given intensity. But first, the intensity of [M + 1] relative to [M] = 100 needs to be determined, for which, consider the following calculations,

[M+1]=(\frac{M+1}{M}) (100)

[M+1]=(\frac{7.022}{40.58}) (100)

[M+1]=17.30

Using equation 1 we get,

number of C=\frac{[M+1]}{1.07}

number of C=\frac{17.3}{1.07}\\number of C = 16.168

or number of C = 16

The remaining value, 0.168, can be due to the isotopes of hydrogen and oxygen in the organic compound.

7 0
4 years ago
A 1.50-kilogram ball is attached to the end of a 0.520-meter string and swung in a circle. The velocity of the ball is 9.78 m/s.
Sedaia [141]

Answer:

F centripetal force (tension) = 275.9  N

Explanation:

Given data:

Mass = 1.50 kg

Radius = 0.520 m

Velocity of ball = 9.78 m/s

Tension = ?

Solution:

F centripetal force (tension) =  m.v² / R

F centripetal force (tension) = 1.50 kg . (9.78 m/s)² / 0.520 m

F centripetal force (tension) = 1.50 kg . 95.65 m²/s² / 0.520 m

F centripetal force (tension) = 143.5 kg. m²/s² / 0.520 m

F centripetal force (tension) = 275.9  N

7 0
3 years ago
Given the information that nitrogen atoms are larger than hydrogen atoms,which of the models best represent ammonia?(NH3)
Ray Of Light [21]

Answer:

<em>The correct option is the structure in the option D. </em>

Explanation:

Ammonia contains a single nitrogen atom bonded to three hydrogen atoms.

The structure present in option A shows a single nitrogen atom bonded with a single hydrogen atom hence it is not correct.

The structure in option B shows a nitrogen atom bonded to four hydrogen atoms hence it is also not correct.

The structure in option C shows a nitrogen atom bonded to two hydrogen atoms hence it is also not correct.

The structure in option D shows a nitrogen atom bonded to three hydrogen atoms which is the correct structure of ammonia (NH3).

4 0
3 years ago
A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces a pressure of 3.25 atm. Wha
mario62 [17]

Answer:

Option a . 0.154L

Explanation:

P₁ . V₁ = P₂ . V₂

when we have constant temperature and constant moles for a certain gas.

At sea level, pressure is 1 atm so:

0.5 L . 1atm = V₂ . 3.25 atm

(0.5L . 1atm) / 3.25 atm = 0.154 L

6 0
3 years ago
A 85.4 lb child has a Streptococcus infection. Amoxicillin is prescribed at a dosage of 45 mg per kg of body weight per day give
bixtya [17]

The amount of Amoxicillin dose given to the 85.4 lb child daily is determined as 1,743.3 mg.

<h3>What is the amount of Amoxicillin dose given to the child?</h3>

The amount of  Amoxicillin  dose given to the child is calculated as follows;

amount of Amoxicillin dose = weight of the child x dosage prescribed

<h3>What is the weight of the child in pounds (lb) </h3>

The weight of the child in pounds (lb) is calculated as follows;

1 lb = 0.453592 kg

85.4 lb = ?

= 85.4 x 0.453592 kg

= 38.74 kg

amount of Amoxicillin dose = 38.74 kg x 45 mg/kg

amount of Amoxicillin dose = 1,743.3 mg

Thus, the amount of Amoxicillin dose given to the 85.4 lb child daily is determined as 1,743.3 mg.

Learn more about amount of dose here: brainly.com/question/11185154

#SPJ1

The complete question is below:

A 85.4 lb child has a Streptococcus infection. Amoxicillin is prescribed at a dosage of 45 mg per kg of body weight per day given b.i.d. Calculate the daily dose of the child.

7 0
1 year ago
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