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tatiyna
3 years ago
13

Which substance is a gas at 20˚C and one atmosphere of pressure? A. C B. O3 C. Ca D. I2

Chemistry
1 answer:
jasenka [17]3 years ago
3 0

Answer:

O3

Explanation:

The answer to the question is O3 .

Hope this helped! Have an amazing day :)

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Students conducting a lab investigation are given two unknown tubes of colorless aqueous solutions. The students are told that o
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The students can determine which of the solutions contains salt through the conductive tester.

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It is a solution containing ions are atoms that have gained or lost electrons to acquire a positive (lost electron) or negative (gained electron) charge.

An ionic solution would be able to conduct electricity whereas the covalent would not so if you have a conductivity tester which is available in most labs.

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List down 3 Filipino world-class instrumentalists.<br>1.<br>2.<br>3.​
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Which answer below correctly identifies the type of change and the explination for the boiling of water
katrin [286]
Answer:

Physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved.

Explanation:

Water boiling results in the physical state changing from solid to gaseous water. This moment can be called boiling or vaporizing, which is the change from liquid to gaseous state by heating water. Thus, the "Boiling Point" (PE) of a substance is the temperature at which that substance changes from liquid to gaseous state and, in the case of water, is 100 ° C. When the water reaches this temperature its physical change occurs because, despite the formation of gas, the water was undergoing a state change, which means that its original properties are preserved.
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The standard enthalpy change for the following reaction is 656 kJ at 298 K.
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Answer:

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3 0
3 years ago
Test Question just answer random.
Alexus [3.1K]

Answer:

U are a fool

Explanation:

Because you didn't even asked a question

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