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3 years ago

What do you know about a chemical compound by looking at its chemical formula?

Chemistry

2 answers:

defon3 years ago

8 0

B.
"The number and kinds of atoms in the compound."

coldgirl [10]3 years ago

4 0

The type of bonds present in the compound. and the type of structure it has and the elements that are presents and the number of moles of each element in one mole of the compound.

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Which has a greatest mass, one atom of carbon, one atom of hydrogen, or one atom of litium

zysi [14]

Answer:

One atom of carbon

Explanation:

5 0

2 years ago

The concentration of a diluted "wine" sample was found to be 0.24 %(v/v) ethanol. Assuming the wine was diluted by 75x before an

Softa [21]

Answer:

The original concentration of ethanol was 18 % (v/v)

Explanation:

For the analysis of a sample, mostly dilutions are made of the original concentrated sample. The analysis results obtained from the diluted sample are then calculated for the concentrated samples.

According to the given data, the wine sample was diluted 75 times. This means that the initial concentration of ethanol was 75 times more than the final concentration i.e. 0.24 % (v/v). So mathematically:

original concentration (v/v)= final concentration (v/v) x times diluted

original concentration (v/v)= 0.24 % x 75

original concentration (v/v) = 18 %

3 0

2 years ago

What is the molarity of a solution that contains 0.220 moles KOH in 0.350 L of solution?

Lera25 [3.4K]

Answer:

0.628 M.

Explanation:

In order to solve this problem we need to keep in mind the definition of molarity:

Molarity = moles / liters

We are given both the number of moles and the volume of solution, meaning we can now proceed to calculate the molarity:

Molarity = 0.220 mol / 0.350 L

Molarity = 0.628 M

5 0

2 years ago

Does the model below represent a mixture or a substance ?

Vikentia [17]

Answer:

substance

Explanation:

A mixture is when two or more different atoms/molecules are together, but not joined.

A substance is when the same atom/molecule is in a group together.

In this example, it is a substance because it is comprised of the same molecule not joined all together. If you wanted a mixture, other colored atoms/molecule (e.g. add green atoms) would change it to this property.

4 0

2 years ago

Why do we need to know these organic molecules? Are they important to living things?

laila [671]

Answer:

<h2>Organic molecules are important to living things because life is based on the properties of carbon. Carbon is an important element because it can </h2><h2>form four covalent bonds. ... The carbon skeletons contain the functional groups that are involved in biochemical reactions.</h2>

Explanation:

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7 0

3 years ago

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