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3 years ago

Scientific hypotheses differ from scientific theories in that they are

Chemistry

1 answer:

goldenfox [79]3 years ago

7 0

Answer:

A tentative explanations that need further evaluation

Explanation:

In scientific experiment, hypothesis and theories are used. Both are important but significantly different from one another. Scientific hypothesis is a tentative explanation to a problem that needs further evaluation by testing via experimentation. This means that a hypothesis must be testable and subject to proper investigation.

On the other hand, theories are tested explanation. That is, theories are not subject to testing because they are well backed up by data.

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Answer:

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Explanation:

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2 years ago

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3 years ago

In which of the following types of solution is the rate of dissociation equal to the rate of crystallization? Concentrated Super

Butoxors [25]

In a <u>Saturated </u>solution, the rate of dissociation equal to the rate of crystallization

Explanation:

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3 years ago

A 25.0 L tank of nitrogen gas is at 25 oC and 2.05 atm . If the temperature stays at 25 oC and the volume is decreased to 14.5 L

NeTakaya

Answer:

$\boxed {\boxed {\sf P_2 \approx 3.53 \ atm}}$

Explanation:

In this problem, the temperature stays constant. The volume and pressure change, so we use Boyle's Law. This states that the pressure of a gas is inversely proportional to the volume. The formula is:

$P_1V_1=P_2V_2$

Now we can substitute any known values into the formula.

Originally, the gas has a volume of 25.0 liters and a pressure of 2.05 atmospheres.

$25.0 \ L * 2.05 \ atm = P_2V_2$

The volume is decreased to 14.5 liters, but the pressure is unknown.

$25.0 \ L * 2.05 \ atm = P_2 * 14.5 \ L$

Since we are solving for the new pressure, or P₂, we must isolate the variable. It is being multiplied by 14.5 liters and the inverse of multiplication is division. Divide both sides by 14.5 L .

$\frac {25.0 \ L * 2.05 \ atm }{14.5 \ L}=\frac{P_2 *14.5 \ L}{14.5 \ L}$