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kogti [31]
3 years ago
15

What does the color and smooth texture of this

Chemistry
2 answers:
Sergeu [11.5K]3 years ago
7 0

Answer:A

Explanation:

It cools rapidly I am contains dark minerals

Pavlova-9 [17]3 years ago
6 0

Answer:

It cools rapidly and contains dark minerals.

Explanation:

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a physical property can be observed while the substance remains the same in its chemical composition. true false
sweet [91]

While the material retains its chemical makeup, the physical property may be examined. The given statement is true.

The matter can undergo variations in physical or chemical properties. The physical changes of a matter occur when the matter undergoes changes in its physical properties like changes in the state of matter, weight, color, etc.

But the chemical composition of matter will remain constant if it undergoes a physical change. Whereas in chemical change, the matter undergoes a change in the composition of the substance but there will be no change in the physical properties.

Hence, The assertion is correct in that physical properties can be seen while the substance's chemical makeup stays constant.

To learn more about physical and chemical change, visit: brainly.com/question/21509240

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8 0
1 year ago
Find the grams in 1.26*10^-4 mol of HC2H3O2
Oksana_A [137]

Answer:

0.00757 grams

Explanation:

Find the molar mass of the compound: which is 60.05.

The molar mass is basically just the sum of all the atomic masses of each of the elements.

Then multiply the molar mass by the number of moles in the compound, which is 1.26 x 10^-4 moles.

Your answer should be 0.00757 grams.

5 0
3 years ago
how do the properties of sodium chloride compare with the properties of its component elements, sodium
Orlov [11]

Sodium chloride is a nonreactive solid at room temperature, and is commonly known as table salt. The two elements that make up sodium chloride are sodium and chlorine. Sodium is a very reactive metal that tastes bad. Pure sodium is explosive when it comes in contact with water. Hope this helps

3 0
4 years ago
All molecules have the same kinetic energy and hence the same speed.<br><br> O True<br><br> O False
topjm [15]
False...their speed differs
4 0
2 years ago
In an internal combustion engine, octane reacts with oxygen gas to produce carbon dioxide and water and a large amount of energy
sergij07 [2.7K]

Answer:

When octane and oxygen gas are burned in our cars, carbon dioxide and water come out of the exhaust. The increase in carbon dioxide in the atmosphere is causing global warming. 4.

Explanation:

5 0
3 years ago
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