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Y_Kistochka [10]
2 years ago
8

While watching tv in your room one nigh, you decide to have some Oreos and a glass of milk. there were only 3 Oreos and science

you pored a huge glass of milk you couldn't finish it all. Instead of taking it to the kitchen, you put the glass of milk under your bed. Your mom discovered it three months later when she was cleaning your room. The cup no longer had a white liquid...it now contained a semi-solid layer of cheese like stuff floating on top of a clear liquid. Did a chemical reaction take place, yes or no? what evidence or lack of evidence do you have to support your answer?
Chemistry
1 answer:
sveta [45]2 years ago
8 0

Answer:

yes it did.

Explanation:

the product must have produced a smell therefore it created a gas. this means it was a chemical reaction

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According to de Broglie, which of these objects does not have a wavelength?
polet [3.4K]

Answer: Option D is correct.

Explanation: Equation given by de Broglie is:

\lambda =\frac{h}{mv}

where, \lambda = wavelength of the particle

h = Planck's constant

m = mass of the particle

v = velocity of the particle

In option A, football will have some mass and is moving with a velocity of 25 m/s, hence it will have some wavelength.

In Option B, unladen swallow also have some mass and is moving with a velocity of 38 km/hr, hence it will also have some wavelength.

In Option C, a person has some mass and is running with a velocity of 7 m/hr, hence it will also have some wavelength.

As, the momentum of these particles are large, therefore the wavelength will be of small magnitude and hence, is not observable.

From the above, it is clearly visible that all the options are having some wavelength, so option D is correct.

7 0
3 years ago
Differences in air pressure drive the global wind system on earth. Which term describes polar winds that blow from east to west?
marshall27 [118]

Answer: Polar Easterlies

Explanation: Winds flow from high pressure areas to low pressure areas. They originate in the north and south pole creating high pressure zones which generates an outflow. This outflow is then directed from east to west and hence the term used to describe these winds is Polar Easterlies.

6 0
3 years ago
An analytical chemist has determined by measurements that there are 96.5 moles of carbon in a sample of acetic acid. how many mo
Nadya [2.5K]
The formula of acetic acid is CH3COOH => C2H4O2.

So, the acetic acid has the same number of atoms of carbon (C) than of oxygen (O).

Therefore, the sample that contains 96.5 moles of carbon, will contain also 96.5 moles of O.

Answer: 96.5 moles of oxygen.
3 0
2 years ago
) What effect does the attraction among Earth, the moon, and the sun cause?
Jobisdone [24]

Answer:

earth is were humans live for live and the moon controls the water and the sun gives heat for us humans and plants and life

Explanation:

7 0
2 years ago
Is 2AI + 3O2 = 2AI2O3 balanced or unbalanced?
Luba_88 [7]
This equation is balanced.
3 0
3 years ago
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