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3 years ago

Potassium chloride will dissolve in water but not in oil. Why?

Chemistry

1 answer:

german3 years ago

8 0

Answer:

oil has a lighter liquid weight and is able to keep other chemicals or videmins from dissolving

Explanation:

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A student used 10 mL water instead of 30mL for the extraction of the NaCl from the mixture. How would this affect the calculated

Usimov [2.4K]

The amount of Nacl would be 3 times more

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3 years ago

The velocity (speed) of an object was determined to be 45 miles per

Ahat [919]

Answer: 72.58 km/hr

Explanation:

$\frac{45 miles}{1 hour}$ × $\frac{1 km}{0.62 miles}$ = 72.58 km/hr

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2 years ago

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A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water

rosijanka [135]

Include:
- Adding cleanser makes the paperclip fall through the water to the base of the dish.
- Soap is a surfactant.
- Surfactants lessen the surface pressure of a fluid.
- The surface strain of water is the thing that upheld the paper cut.

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3 years ago

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If 57.3 l of 0.497 m koh is required to completely neutralize 39.5 l of a CH3COOH solution. What is the molarity of the acetic a

bearhunter [10]

The molarity of the solution will be 0.72 m.

The majority of reactions take place in solutions, making it crucial to comprehend how the substance's concentration is expressed in a solution when it is present. The number of chemicals in a solution can be stated in a variety of ways, including.

The symbol for it is M, and it serves as one of the most often used concentration units. Its definition states how many moles of solute there are in a liter of solution.

Given data:

$V_{1} =57.3 L\\V_{2} = 39.5 L\\M_{1} = 0.497 m\\\\M_{2} = ?$

Molarity can be determined by the formula:

$M_{1} V_{1} = M_{2} V_{2}$

where, M is molarity and V is volume.

Put the value of given data in above equation.

57.3 × 0.497 m = M × 39.5 L

M = 0.72 m

Therefore, the molarity of the solution will be 0.72 m

To know more about molarity

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1 year ago

Calculate the wavelength of a football (425g) thrown by an NFL quarterback traveling at 50mph

AnnyKZ [126]

Wavelength is 6.976 x 10^ -35 m

Explanation:

In this, we can use De Broglie’s equation. This equation is the relationship between De Broglie’s wavelength, velocity and the mass of a moving object. In this equation, we are using plank's constant which is 6.626 x 10^-34 m^2 kg/s.

We know that one mile per hour is equivalent to 0.447 M/S.

And One gram is equivalent to 10^-3 kg.

De Broglie’s wavelength = λ ( wave length) = Plank’s constant/ Mass x velocity

λ ( wave length) = 6.626 x 10^ -34/ (425 x10^-3) x ( 50 x 0.447)

= 6.626 x 10^ -34/ 0. 425 x 22.35

= 6.626 x 10^ -34/ 9.498

= 6.976 x10^ -35 m

So, the wavelength of the football will be 6.976 x 10^ -35 m

7 0

3 years ago