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kompoz [17]
3 years ago
9

What is the mole fraction of NaCl in a mixture containing 7.21 moles NaCl, 9.37 moles KCL, and 3.42

Chemistry
1 answer:
GrogVix [38]3 years ago
3 0

Answer : The mole fraction of NaCl in a mixture is, 0.360

Explanation : Given,

Moles of NaCl = 7.21 mole

Moles of KCl = 9.37 mole

Moles of LiCl = 3.42 mole

Now we have to calculate the mole fraction of NaCl.

\text{Mole fraction of }NaCl=\frac{\text{Moles of }NaCl}{\text{Moles of }NaCl+\text{Moles of }KCl+\text{Moles of }LiCl}

Now put all the given values in this formula, we get:

\text{Mole fraction of }NaCl=\frac{7.21}{7.21+9.37+3.42}=0.360

Therefore, the mole fraction of NaCl in a mixture is, 0.360

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2.(04.01 LC)
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Answer:

2KClO3 —> 2KCl + 3O2

The coefficients are 2, 2, 3

Explanation:

From the question given above, we obtained the following equation:

KClO3 —> 2KCl + 3O2

The above equation can be balance as follow:

There are 2 atoms of K on the right side and 1 atom on the left side. It can be balance by putting 2 in front of KClO3 as shown below:

2KClO3 —> 2KCl + 3O2

Now, the equation is balanced.

Thus, the coefficients are 2, 2, 3

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What is not a major use of solar thermal energy? to provide hot water to provide heat for houses to warm buildings to provide el
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Answer:

solar thermal energy can be even used to produce air conditioning I'm not understanding your question due to the fact that solar thermal energy produces hot water provides heat for houses and warms buildings great for space heating and can provide electricity

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3 years ago
Explain how the energy of a toy car is transformed as it slides down a ramp. Give evidence that the energy of the car remains th
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As the car starts to slide down the ramp, it is kinetic energy and when it's on the top of the ramp,  it is potential energy. We can see that the energy is now being transferred through the car and ramp.

4 0
3 years ago
How can ionic compounds be neutral?
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If u seperate them into halves at a time

8 0
2 years ago
HeLp!!!
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Answer:

  1. The main idea behind MADs is that they use the principle that metallic objects (submarines) interfere in the magnetic lines of Earth forces. And this equipment detects this anomaly.
  2. Submarines can be detected by using MADs
  3. The history of MAD development

In 1917 the interest in the detection of submarines started with the study hydrophones. Then in 1918, the U.S. considered to use the magnetism in this area but it did not result to be practical as it had a limited detection range.

Then by 1941 in Britain and in U.S. developed magnetic detection devices to measure Earth’s magnetic field, so after that in 1943 MADs were installed in ASW aircrafts.

Due to the limited range and its lack of ability to detect the magnetic variance from different sources, MAD started to be used in combination with sonobuoys. This combination allowed an aircraft to localize submarines with the confirmation of sonobuoys.

Explanation:

MADs are Magnetic Anomaly Detectors. Their function is to detect anomaly in the Earth’s magnetic field caused by submarines.

Submarines are made of ferrous metal which contain domains that are tiny magnets form of iron molecules. This material creates a disturbance that can be detected in the magnetic field.

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