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Solnce55 [7]
4 years ago
11

There are a few different shapes of airplanes being considered in the design of a new airplane. One design would add protrusions

to the wings (such as fuel pods, water tanks, and missiles) to give the airplane extra storage. Which of the following is a likely drawback to this design?
Chemistry
1 answer:
Ede4ka [16]4 years ago
7 0

C. The design would not be cost-efficient; the plane would require more fuel due to increased thrust from higher drag.

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In what situation would an interviewer want to provide the interviewee a list of questions before the interview ?
Firdavs [7]

Answer: Option (A) is the correct answer.

Explanation:

When the questions are technical and may require some research from the interviewee then an interviewer want to provide the interviewee a list of questions before the interview.

As only in this case, interviewer wants the interviewee to take some time in order to think about the particular question and then answer it appropriately.

As if there is no list of questions then there are changes that interviewee will forget about some useful point which is important to keep in mind before answering.

7 0
3 years ago
Read 2 more answers
An object has a density of 1.8 g/mL and a mass of 14 g. What is the volume of the object
lesya692 [45]

Answer:

0.13 cm^3

Explanation:

Volume = Mass/ density

1.8 g/ml / 14g = 0.128571429

Both numbers have 2 significant digits.

With that, the answer rounds to 0.13

The final answer is 0.13 cm(don't forget the units for volume)

Hope it helped!

4 0
3 years ago
Calculate the number of particles in a 0.75 gram sample of Calcium Nitrate; Ca(NO3)2​
kkurt [141]

The number of particles : 2.75 x 10²¹

<h3>Further explanation  </h3>

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12  

1 mole = 6.02.10²³ particles  

\tt n=\dfrac{N}{N_o}

N = number of particles  

No = Avogadro number (6.02.10²³)  

n = number of moles  

While the number of moles can also be obtained by dividing the mass (in grams) with the molar mass of element or molecule  

0.75 gram sample of Calcium Nitrate; Ca(NO₃)₂

MW of Ca(NO₃)₂ : 164.09 g/mol

\tt mol~Ca(NO_3)_2=\dfrac{0.75}{164.09}=0.00457

The number of particles

\tt N=n\times N_o\\\\N=0.00457\times 6.02\times 10^{23}=2.75\times 10^{21}

5 0
3 years ago
As a scuba diver descends under water, the pressure increases. At a total air pressure of 2.71 atm and a temperature of 25.0 C,
Anettt [7]

Answer:

The molar solubility of nitrogen gas is 1.32\times 10^{-3}mol/L.

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{N_2}=K_H\times p_{liquid}

where,

K_H = Henry's constant = 6.26\times 10^{-4}mol/L.atm

p_{N_2} = partial pressure of nitrogen gas

Total air pressure = P = 2.71 atm

Percentage of nitrogen in air = 78.09%

Mole fraction of nitrogen ,\hi_{N_2}= 0.7809

p_{N_2}=P\times \chi_{N_2}=2.71 atm\times 0.7809

Putting values in above equation, we get:

C_{N_2}=6.26\times 10^{-4}mol/L.atm\times 2.71 atm\times 0.7809\\\\C_{N_2}=1.32\times 10^{-3}mol/L

Hence, the molar solubility of nitrogen gas is 1.32\times 10^{-3}mol/L.

6 0
3 years ago
Please please i beg of you if you can take a few minutes out of your day to do this for me it would be great.
Nuetrik [128]

Answer:

I cant really do that but I will give u the material to make a table

Explanation:

Solid is the state of matter in which the substance has a definite shape and volume. Liquid is the state in which the substance takes the shape of its container but has a definite volume.Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

6 0
3 years ago
Read 2 more answers
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