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3 years ago

What are the 6 branches of chemistry and what do they study?

2 answers:

8 0

Organic Chemistry- The study of most carbon containing compounds.
Inorganic Chemistry- The study of non-organic substances, many of which have organic fragments bonded with metals.
Physical Chemistry- The study of the properties and changes of matter and their relation to energy.
Analytical Chemistry- The intensification of the components and composition of materials.
Biochemistry- The study of substances and processes occurring in living things.
Theoretical Chemistry- The use of math and computers to understand the principles being observed and chemical behavior.

neonofarm [45]3 years ago

4 0

Hi there!

The 6 branches of chemistry are Organic Chemistry, Inorganic Chemistry, Analytical Chemistry, Physical Chemistry, Biochemistry, and Nuclear Chemistry.

Organic Chemistry: The branch of chemistry dedicated to carbon compounds and substances.

Inorganic Chemistry: The branch of chemistry dedicated to non-carbon compounds and substances.

Analytical Chemistry: The branch of chemistry dedicated to identifying and quantifying matter through a variety of different instruments, tools, and practices.

Physical Chemistry: The branch of chemistry dedicated to analysis of chemical phenomena as well as their different behavior and phenomena.

Biochemistry: The branch of chemistry dedicated to the chemical processes such as cellular respiration that occur within living organisms.

Nuclear chemistry: The branch of chemistry dedicated to nuclear processes and properties as well radioactivity.

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A tablet of Pain Be Gone Aspirin, which had a mass of 1.213 g, was pulverized and 1.159 g were dissolved in 10.0 mL of ethyl alc

Elan Coil [88]

Answer:

a. Moles of $NaOH$ = 0.001643 moles

b. 0.296 g

c. 0.3098 g

d. Not acceptable

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For $NaOH$ :

Molarity = 0.1052 M

Volume = 15.62 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 15.62×10⁻³ L

Thus, moles of $NaOH$ :

$Moles=0.1052 \times {15.62\times 10^{-3}}\ moles$

Moles of $NaOH$ = 0.001643 moles

The reaction of NaOH with the acetylsalicylic acid is in the ratio of 1:1.

Thus, Moles of NaOH = Moles of acetylsalicylic acid = 0.001643 moles

Molar mass of acetylsalicylic acid = 180.16 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

Mass = Moles * Molar mass = 0.001643 moles * 180.16 g/mol = 0.296 g

1.159 g of sample contains 0.296 g of acetylsalicylic acid

1.213 g of sample contains $\frac{0.296}{1.159}\times 1.213$ g of acetylsalicylic acid

Mass of acetylsalicylic acid = 0.3098 g = 309.8 mg

d. Sample contains = 309.8 mg

Manufacturer claiming = 315 mg to 335 mg

Thus , it is not acceptable.

5 0

3 years ago

Which of the following is not an example of a chemical change?

ale4655 [162]

Salt dissolving in a glass of water, using electricity to break down water into hydrogen and oxygen, rust forming on an iron fence and gas burning on a stove.

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3 years ago

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Draw a bond-line structure for CH3CH2O(CH2)2CH(CH3)2. Include Lone Pairs in your answer.

mash [69]

Answer:

See explanation and image attached

Explanation:

A bond line structure refers to any structure of a covalent molecule wherein the covalent bonds present in the molecule are represented with a single line for each level of bond order.

The bond-line structure of CH3CH2O(CH2)2CH(CH3)2 has been shown in the image attached. We know that oxygen has a lone pair of electrons and this has been clearly shown also in the image attached.

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3 years ago

Give four reasons why afertile soil is not necessarily productive

abruzzese [7]

Answer:

During cellular respiration animal cells combine oxygen with food molecules to release energy to live and function. Remember that cellular respiration produces carbon dioxide as a waste product. Animals use energy to grow, reproduce, and to function. They release the carbon dioxide into the air as a waste product

Explanation:

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The measure of the number of atoms in one element that will combine with am atom of element is?

raketka [301]

These atoms are known as valence atoms.

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