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3 years ago

Which of the following is a pure substance?

1 answer:

8 0

A pure substance is defined as a matter having definite and constant composition all throughout a sample. It is held by chemical bonds therefore only chemical processes can be used to break it. I think the correct answer among the choices listed is option D.

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At constant P and n, T decreases at V is?

goblinko [34]

Answer:

This means that as pressure increases,the volume decreases or the volume increases as the temperature increases, and decreases as the temperature decreases

8 0

3 years ago

The color change of an indicator is used to determine

lisov135 [29]

Answer:

Whether a solution is acidic or basic can be measured on the pH scale. When universal indicator is added to a solution, the color change can indicate the approximate pH of the solution. Acids cause universal indicator solution to change from green toward red. ... Acidic solutions have a pH below 7 on the pH scale.

Explanation:

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3 0

3 years ago

In this experiment you’ll be grabbing the relationship between mass and volume you’ll be placing the volume on the X axis and th

Contact [7]

The mass and volume has direct proportional to each other.

<h3>What is the relationship between mass and volume?</h3>

The volume of the object is directly proportional to its mass which means that if the volume increases the mass of the object increases also increase and vice versa. Due to this direct relationship, the line of regression will go straight between X and Y axis.

So we can conclude that mass and volume has direct proportional to each other.

Learn more about volume here: brainly.com/question/1972490

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6 0

2 years ago

There are five constitutional isomers with the molecular formula C6H14. When treated with chlorine at 300°C, isomer A gives a mi

ozzi

Answer:

Pentane or 2,2-dimethylbutane

Explanation:

I've numbered the isomeric hexanes from 1 to 5 and labelled the sets of equivalent hydrogens.

The results are

Isomer 1— three sets of equivalent hydrogens

Isomer 2— five sets of equivalent hydrogens

Isomer 3— four sets of equivalent hydrogens

Isomer 4— two sets of equivalent hydrogens

Isomer 5— three sets of equivalent hydrogens

Each set will give one monochloro substitution product.

4 = A. Two monochloro isomers.

2 = B. Five monochloro isomers.

3 = C. Four monochloro isomers.

Isomers 1 and 5 each give three monochloro isomers.

Thus, we cannot assign Structure D definitively.

D is either pentane or 2,2-dimethylbutane.

5 0

4 years ago

Quartz when heat and pressure are apllied to it

S_A_V [24]

If you melt and cool silicon dioxide under very special conditions
in the laboratory we can grow a single crystalline form of 
silicon dioxide that we call quartz. In quartz crystals all of 
the molecules are aligned and bonded together in a regular three 
dimensional tetrahedral structure forming a very hard, transparent 
material with special electronic properties.

3 0

3 years ago