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adell [148]
1 year ago
9

Formaldehyde has a wide range of uses, many of them in manufacturing. Its chemical formula is CH₂O. The model below represents f

ormaldehyde.
Based on the model, which statement best describes formaldehyde molecules?

A. Formaldehyde molecules form an extended structure and cannot freely move past each other.

B. Formaldehyde molecules do not form an extended structure and can freely move past each other.

C. Formaldehyde molecules do not form a repeating pattern and cannot freely move past each other.

D. Formaldehyde molecules form a repeating pattern and can freely move past each other.​

Chemistry
1 answer:
Korolek [52]1 year ago
4 0

Answer: B

Explanation: Formaldehyde molecules do not form an extended structure and can freely move past each other

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An ideal gas is contained in a cylinder with a volume of 5.0x102 mL at a temperature of 30°C and a pressure of 710. Torr. The ga
Scorpion4ik [409]

Answer:

51207 torr is the new pressure of the gas

Explanation:

We can solve this question using combined gas law that states:

P1V1T2 = P2V2T1

<em>Where P is pressure, V volume and T absolute temperature of 1, initial state and 2, final state of the gas</em>

<em> </em>

Computing the values of the problem:

P1 = 710torr

V1 = 5.0x10²mL

T1 = 273.15 + 30°C = 303.15K

P2 = ?

V2 = 25mL

T2 = 273.15 + 820°C = 1093.15K

Replacing:

710torr*5.0x10²mL*1093.15K = P2*25mL*303.15K

3.881x10⁸torr*mL*K = P2 * 7.579x10³mL*K

P2 = 51207 torr is the new pressure of the gas

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2 years ago
Does vinegar conduct? yes or no
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Im guessing and i think the answer is yes.
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Which of the following statements are true? Significant figures in a measurement are all measured digits, and one estimated digi
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Answer: Significant figures in a measurement are all measured digits, and one estimated digit

Significant figures communicate the level of precision in measurements Significant figures are an indicator of the certainty in measurements.

Explanation:

Significant figures : The figures in a number which express the value or the magnitude of a quantity to a specific degree of accuracy or precision is known as significant digits.

The significant figures of a measured quantity are defined as all the digits known with certainty and the first uncertain or estimated digit.

Rules for significant figures:

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2. All non-zero numbers are always significant.

3. All zero’s between integers are always significant.

4. All zero’s preceding the first integers are never significant.

5. All zero’s after the decimal point are always significant.

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If the following ions Mg2+, Cl-, Sr2+, OH- are placed in a test tube, the precipitate formed is
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Answer:

I am so sorry if I am wrong but my guess is no precipitate is formed.

Explanation:

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