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2 years ago

What does the formula for water, H2O, tell you about what the molecule is made of ?

Chemistry

1 answer:

Sergeu [11.5K]2 years ago

4 0

Answer:

To find out what water is made of, it helps to look at its chemical formula, which is H2O. This basically tells us that the water molecule is composed of two elements: hydrogen and oxygen or, more precisely, two hydrogen atoms (H2) and one oxygen atom (O). Hydrogen and oxygen are gases at room temperature.

Explanation:

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Putting salt on the ground to melt ice or snow I mean.

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3 years ago

What is the molarity of 3.0 L solution containing 250 g of Nal

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Explanation:

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3 years ago

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pashok25 [27]

Answer : % ionic character is 0.20%

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$\% \text{ ionic character}= [1-e^{\frac{-(X_A-X_B)^2)}{4}}]\times(100\%)$

where $X_A$ & $X_B$ are the Pauling's electronegativities.

The table attached has the values of electronegativities, by taking the values of Al and Mn from there,

$X_{Al}=1.61$

$X_{Mn}=1.55$

Putting the values in the electronegativity formula, we get

$\% \text{ ionic character}= [1-e^{\frac{-(1.61-1.55)^2)}{4}}]\times(100\%)$

= 0.20%

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