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3 years ago

The new hybrid car can get 51.5 km/gal. It has a top speed of 40000.00 cm/min and is 4m long. How fast can the car go in m/hr?

Chemistry

1 answer:

horrorfan [7]3 years ago

4 0

Answer:

The anawer of this question is 0.024 m/h

Explanation:

Other explanations of the question are additional.

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Give at least 3 real-world uses of paper chromatography used in the fields of chemistry and biology.

Alexxandr [17]

Folding , cutting , and to be written on

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3 years ago

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Which type of molecule is propanol? <br> A. Alcohol <br> B. Aldehyde <br>C. Ketone <br>D. Amine

snow_lady [41]

Answer:

Explanation:

Propanal is an organic compound with the formula CH3CH2CHO. Aldehyde is colorless, flammable and a slightly fruity odor.

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2 years ago

Which of the following observations would indicate that a material is a pure substance?

Leokris [45]

The correct answer is that a pure substance cannot be physically broken down into different types of atoms.

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3 years ago

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A sample of carbon tetrachloride (CCI) contains 3 moles of the substance. How many atoms are there in the sample?

STALIN [3.7K]

Answer:

Number of atoms =1.806×10²⁴

Explanation:

You have the number of moles of Carbon tetrachloride which is n=3

And you are looking for number of atoms that are in the sample, which are represented by the letter "N"

The formula that has both number of moles(n) and number of atoms(N) is written as n=N/Na

Na is called the Avogadros number and it is equal to 6.08×10²³, it never changes(it is a constant)

So you will substitute the number of moles and the avogadros number to you formula, and the only unknown will be the number of atoms which you are looking for

n=N/Na
3=N(6.02×10²³)
N=1.806×10²⁴ atoms of CCl

NB: N does not represent the number of atoms only. It may also represent the number of particles or molecules...

3 0

2 years ago

A metal X loses 2 electrons and a non-metal Y gains 1 electron. Show the electron dot structure of compound formed between them.

Stells [14]

Answer:

The compound is ionic

The compound has a high melting point

The compound will conduct electricity in aqueous solution

The compound will be soluble in water

Explanation:

Now, let us consider the nature of the compound formed when a metal X looses two electrons and a non metal Y accepts one electron.

The compound formed must be ionic in nature with a formula XY2. Ionic compounds are formed by transfer of electrons from metals to nonmetals.

The ionic substance formed is always soluble in water with a high melting point. Usually, ionic solids do not conduct electricity in the solid state because the charge carriers (ions) are tightly bound in the crystal structure while in the solid state. In aqueous solution, the ions are relatively free hence ionic substances conduct electricity in aqueous solution.

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3 years ago