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seropon [69]
3 years ago
9

44.90 g of reactants are placed in a beaker

Chemistry
1 answer:
sergiy2304 [10]3 years ago
7 0

Answer:

D. -1882J

Explanation:

We can solve the energy released in a chemical reaction in an aqueous medium using the equation:

Q = -m*C*ΔT

<em>Where Q is energy (In J),</em>

<em>m is mass of water (45.00g)</em>

<em>C is specific heat of water (4.184J/g°C)</em>

<em>And ΔT is change in temperature (25.00°C - 15.00°C = 10.00°C)</em>

<em />

Replacing:

Q = -45.00*4.184J/g°C*10.00°C

Q = -1882J

Right answer is:

<h3>D. -1882J</h3>

<em />

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Compare and contrast aldehydes, ketones and alcohols in terms of structure, physical properties and chemical properties.
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The functional group of aldehyde is -CHO

The functional group of ketone is -CO-

The functional group of alcohol is -OH

<h2>STRUCTURES</h2><h3>ALDEHYDE</h3>

The carbonyl group is bounded to at least one hydrogen atom

<h3>KETONE</h3>

The carbonyl group is bounded to two carbon atom

<h3>ALCOHOL</h3>

Organic molecules assembled from carbon, oxygen and hydrogen.

<h2>PHYSICAL PROPERTIES</h2><h3>COLOUR</h3>

Aldehyde. alcohols and ketone are colourless

<h3>ODOURS</h3>

Alcohols are sweet smell expect glycerol

Aldehyde have unpleasant odors

ketone have pleasant odors

<h3>BOILING POINT</h3>

Alcohol , Aldehyde and Ketone have High boiling point

<h3>STATE</h3>

Alcohol, Aldehyde and Ketone are in liquid state

<h2>CHEMICAL PORPERTIES</h2><h3>OXIDATION </h3>

Alcohol oxidized to form carboxylic acid

Aldehyde oxidized to form carboxylic acid

Ketone oxidized to form  carboxylic acid

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2 years ago
How many carbon monoxide molecules are in 0.75 moles of carbon monoxide?
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four 0.5 times 10 to the 23rd Adams of Neptune

Explanation:

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What is an example of a neutral ion.
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A neural sodium ion.
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3 years ago
Is a hollow tube that serves as passageway of air into the luns
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Answer:

The air that we breathe in enters the nose or mouth, flows through the throat (pharynx) and voice box (larynx) and enters the windpipe (trachea). The trachea divides into two hollow tubes called bronchi

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Identify the variables in the investigation: An investigation was done with an electromagnetic system made from a battery and wi
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Answer:

Independent: sizes of nails

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An independent variable is a variable which when changes does not the effect the results of the experiment. It does not depends upon the dependent variable.

A dependent variable is defined as a variable which is affected when the independent variable is changed by the researcher or the experimenter. It depends greatly upon the independent variable.

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In the context,

the independent variable are : sizes of nails

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