19. Chemical properties can be used to

Chemistry

1 answer:

RoseWind [281]3 years ago

7 0

Answer:differentiate between two compounds i think!

Explanation: taking a test!

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What is Density?:

Kryger [21]

Answer:

Density is defined as how tightly or loosely packed a substance is, or to the number of things or people in a certain area.

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3 years ago

Which of the following are needed to calculate the percent yield? Select all that apply. Question 10 options: Theoretical yield

Ivahew [28]

Both theoretical and actual yields would be needed to calculate percent yield.

The percent yield of a reaction is defined as the ratio of the actual yield to that of the theoretical yield. It can be mathematically expressed as:

percent yield = actual yield/theoretical yield x 100%

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2 years ago

To what temperature must a sample of nitrogen at 27°C and 0.625 atm be taken so that it’s pressure becomes 1.125 atm at constant

Karo-lina-s [1.5K]

Answer:

The sample of nitrogen must be taken to 267 $^{0}\textrm{C}$ .

Explanation:

Let's assume nitrogen gas behaves ideally.

Here amount of nitrogen gas in both states remain constant.

So, in accordance with combined gas law for a given amount of an ideal gas in two different states: $\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

where $P_{1}$ and $P_{2}$ are initial and final pressure respectively. $V_{1}$ and $V_{2}$ are initial and final volume respectively. $T_{1}$ and $T_{2}$ are initial and final temperature (in kelvin scale) respectively.