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3 years ago

What is the force of attraction between two atoms that are combined?

Chemistry

1 answer:

Darya [45]3 years ago

3 0

Answer:

Explanation

Chemical bond refers to the forces holding atoms together to form molecules and solids. This force is of an electric nature, and the attraction between electrons of one atom to the nucleus of another atom contributes to what is known as chemical bonds.

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Calculate the number of milliliters of 0.440 M KOH required to precipitate all of the Fe2+ ions in 187 mL of 0.692 M FeSO4 solut

EleoNora [17]

Answer:

588.2 mL

Explanation:

FeSO₄(aq) + 2KOH(aq) → Fe(OH)₂(s) + K₂SO₄(aq)

First we calculate how many Fe⁺² moles reacted, using the given concentration and volume of FeSO₄ solution (the number of FeSO₄ moles is equal to the number of Fe⁺² moles):

moles = molarity * volume

187 mL * 0.692 M = 129.404 mmol Fe⁺²

Then we convert Fe⁺² moles to KOH moles, using the stoichiometric ratios:

129.404 mmol Fe⁺² * $\frac{2mmolKOH}{1mmolFeSO_4}$ = 258.808 mmol KOH

Finally we calculate the required volume of KOH solution, using the given concentration and the calculated moles:

volume = moles / molarity

258.808 mmol KOH / 0.440 M = 588.2 mL

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2 years ago

What's the difference between a molecular formula and a structural formula

Klio2033 [76]

Glucose and Galactose both have the same molecular formula, C6H12O6, but in the body, galactose must be first converted to glucose to make energy. The difference is their structures

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2 years ago

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Fossils of a now extinct dinosaur have been found near the east coast of South America and the west coast of Africa. The dinosau

Temka [501]

Answer:

The Glossopteris fossil is found in Australia, Antarctica, India, South Africa, and South America—all the southern continents. Now, the Glossopteris seed is known to be large and bulky and therefore could not have drifted or flown across the oceans to a separate continent

Explanation:

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3 years ago

How many moles of tin atoms are there in 250 grams of tin?

joja [24]

250gTi x (1mol/47.87 [molar mass]) =5.22247 moles

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3 years ago

How many significant figures are in 1.00 L

likoan [24]

Answer:

3 significant numbers

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3 years ago