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2 years ago

#PLATOFAM

2 answers:

4 0

Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond). They are considered "simple" because they do not have reactive groups like −OH or −Cl attached directly to the carbon atom in the carbonyl group, as in carboxylic acids containing −COOH<span>.

So your answer would be D.).

I hope that this helps. :)</span>

My name is Ann [436]2 years ago

3 0

<span>The organic compound ketone contains which functional group?</span>

D.) carbonyl

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"Chilling" is most commonly practiced by:

zimovet [89]

Answer: Food production industry
Explanation:
Cooling is a process used mainly to reduce the temperature of food to either enter a different process or for storage purposes.
The temperature reached by the cooling process is usually between -1 and 8 degrees celcius.

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2 years ago

How did the work of louis pasteur help modern day medicine?

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Pasteur showed that airborne microbes were the cause of disease. Pasteur built on the work of Edward Jenner and helped to develop more vaccines Pasteur’s career showed how conservative the medical establishment was at the time.

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3 years ago

You measure the emission spectrum of an atom that you suspect to be hydrogen. You have no absolute calibration of the wavelength

trapecia [35]

Answer:

Explanation:

What we need to do here is to determine the ratios by using the Rydberg equation starting with the transition to n1 = 1, 2,3, etc and see which one fits the data. Remember the question states that they are series and the wavelengths will be for increasing energy levels.

1/λ = Rh x ( 1/n₁² - 1/n₂²)

Lyman series ( n₁=1 and n₂= 2,3 etc) for the first two lines, the ratios will be:

1/λ₁ /1/λ₂ =(1/1 -1/ 2²) / (1/1 -1/ 3²) ⇒ 0.84 ≠ 0.74 (the first ratio)

For Balmer series n₁ = 2 and n₂ = 3,4,5, etc

1/λ₁ /1/λ₂ =(1/4 -1/3²) / (1/4 -1/4²) ⇒ 0.741 = 0.741 (match!)

Lets use the third line to check our answer:

1/λ₁ /1/λ₂ =(1/4 -1/3²) / (1/4 -1/5²) = 0.66

5 0

2 years ago

You will need to prepare 12 mL of 25% Sodium Phosphate Buffer (pH 4) solution for Activity 2. What volume of the stock Sodium Ph

zhuklara [117]

Assuming the concentration of stock solution is 50% sodium phosphate buffer solution, the volume of stock solution required is 6 mL and the volume of water required is 6 mL.

<h3>What volume of a stock Sodium phosphate buffer and water is needed to 12 mL of 25% sodium phosphate buffer of pH 4?</h3>

The process of preparing solutions from stock solutions of higher concentration is known as dilution.

Dilution is done with the aid of the dilution formula given below:

C1V1 = C2V2

where

C1 is the concentration of stock solution
V1 is the volume of stock solution required to prepare a diluted solution
C2 is the concentration of the diluted solution prepared
V2 is the final volume of the diluted solution

From the data provided:

C1 is not given

V1 is unknown

C2 = 25%

V2 = 12 mL

Assuming C1 is 50% solution

Volume of stock, V1, required is calculated as follows:

V1 = C2V2/C1

V1 = 25 × 12 /50

V1 = 6 mL

Therefore, the volume of stock solution required is 6 mL and the volume of water required is 6 mL.

Learn more about dilution formula at: brainly.com/question/7208546

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1 year ago

Which statement best explains how the solution should be made? Add 49. 6 mL of 0. 250 M sucrose to 400. 0 mL of water to get 400

soldier1979 [14.2K]

The Last one thank you thank you hope this helped!

7 0

2 years ago