CHEMISTRY HIGH SCHOOL

Besides oxygen and hydrogen, which element is most abundant within the human body? iodine (I) boron b. nitrogen (N) carbon
c.

Answers

Answer 1
Answer: its carbon dioxide we exhale carbon along with oxygen 

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Answers

Answer : The correct option is, (3)

Explanation :

Isomers : It is defined as the molecule that has the same chemical formula but  it has the different structures.

Same chemical formula means that the same number of elements are present in both the compounds.

In option 1,2 and 4, both chemical formula and the structure are different. So, the option 1 compounds are not the isomers of each other.

In option 3, the chemical formula is same but the structure are different. So, the option 3 compounds are the isomers of each other.

Hence, the correct option is, (3)
The answer is number 3

If 2.0 moles of a substance are dissolved in 2.0 liters of solution, then the molarity of this solution is:0.5 M

1.0 M

1.5 M

2.0 M

Answers

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows: 

Molarity = 2.0 moles / 2.0 L

Molarity = 1.0 M

Answer:

1.0 M

Explanation:

Hello,

Molarity is a unit of concentration accounting for the amount of the moles of a solute per liter of solution as shown below:

M=(n_(solute))/(V_(solution))

In such a way, given the information on the statement, the resulting molarity turns out into:

M=(2.0 mol)/(2.0 L)=1.0(mol)/(L)=1.0M

Do not forget that mol per liters means molar units (M) as well.

Best regards.

Which law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constant?

Answers

I believe this would be Avogadro's law which states ''Equal volumes of all gases, at the same temperature and pressure, have the same number of molecules regardless of their chemical nature and physical properties.''

Answer:

boyles law

Explanation:

How many moles of sodium hydroxide are produced when 1.00 mol sodium peroxide reacts with water

Answers

If soldium hydroxide is produced when 1 mol of sodium peroxide reacts with water, it will have at least 1.14 moles

If a person's gallbladder were removed by surgery, which of the following substances would he have the most difficulty digesting? a. carbohydrates b. nucleic acids c. fats d. proteins

Answers

Explanation:

Fats

The gallbladder stores bile ( made in the liver)  which is secreted into the digestive tract to aid in the digestion of dietary fats.

All isomers of octane have the same(1) molecular formula (3) physical properties
(2) structural formula (4) IUPAC name

Answers

The correct answer is option 1. All isomers of octane have the same molecular formula. Isomers are two or more compounds having the same formula but different arrangement of atoms resulting to different IUPAC name and different properties.

Answer: Option (1) is the correct answer.

Explanation:

When two different molecules represent same molecular formula but different arrangement of atoms then they are known as isomers.

Whereas physical properties are the properties which determines the state of object or substance. That is, property which can be observed.

For example, wood is brown in color.

On the other hand, when arrangement of atoms are represented by the formula of a molecule then it is known as structural formula.

Thus, we can conclude that all isomers of octane have the same molecular formula.
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