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1 year ago

What is the molecular weight of water? (numbers only, to nearest 0.1)

1 answer:

4 0

The molecular weight of a substance is calculated by adding the molecular mass of each element present in the molecule multiplied by the number of times each element is in the molecule. For greater clarity, we can organize a table that allows us to do the calculations. We have the following structure for water:

The molecular weight of water will be:

2.01568 + 15.999 = 18.0468=18.0 g/mol

Answer= 18.0

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Explain why a potassium atom would not bond with a calcium atom?

docker41 [41]

Answer:

Calcium atoms have smaller radii than potassium atoms since calcium atoms have a greater nuclear charge. Each calcium atom will be closer to the delocalized electrons. Thus, the bonds in calcium will be stronger than that in potassium.

Explanation:

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2 years ago

In which phase(s) do the molecules take the shape of the container?

Katen [24]

Answer:

Liquid and gas

Explanation:

Liquid and gas are the phases of matter that take the shape of container.

This is very simple to imagine, if we have a piece of rock and we put it in a container, it will not take the shape of container as it already has a definite shape and volume. Liquid when put in a container takes the shape of container but varies in volume as per the container.

However, the gas phases is the phase of matter that perfectly takes the shape of container and occupies all the volume of container as well.

If we recall Dalton's Law of Partial Pressures we can see that the pressure exerted by the gas components in a container is same like the pressure exerted by the gas alone. These partial pressures of the component of gas combine in such a way that they exert total pressure equal to the constituents' pressure on the container. This way gases occupy all the volume of a container and take the shape of a container they're placed in.

Hope it help!

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4 years ago

Read 2 more answers

What is organic chemistry?

Alexandra [31]

Answer:

Organic chemistry is the scientific study of the structure, properties, compositions, reactions and synthesis of organic compounds that by definition contains carbon.The organic compounds are molecules composed of carbon and hydrogen and it may contain any number of other elements.

Maybe this was your answer for your question.

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3 years ago

A sample of gas contains four gases (He, Ne, Ar, and Xe) with the following partial pressures: He (43 mm Hg), Ar (835 mm Hg), an

DIA [1.3K]

Answer:

Partial pressure of Ne = 366 mmHg

Explanation:

In a mixture, the sum of partial pressures for each gas, is the total pressure for the system.

Partial pressure He: 43 mmHg

Partial pressure Ar: 835 mmHg

Partial pressure Xe: 111 mmHg

Partial pressure Ne: ?

Total pressure = 1355 mmHg

43 + 835 + 111 + x = 1355

989 + x = 1355

x = 1355 - 989 → 366

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3 years ago

What is the difference between nuclear fission and nuclear fusion

Naya [18.7K]

Nuclear fission is the breakup of an atom and Nulcear fusion is the combination of two (or more, but almost always two) atoms to form a new atom.

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3 years ago