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shepuryov [24]
3 years ago
7

HNO3 Express your answers as ions separated by a comma.

Chemistry
1 answer:
erastovalidia [21]3 years ago
4 0
In this item, it is assumed that we are to express the given compound in their ionic form. To be able to determine as to what ions this compound will dissociate into, we have the chemical reaction.

                     HNO3 --> H⁺  + NO₃⁻

Hence, the ions are H⁺, NO₃⁻. 
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Which are the four quantum numbers of the last potassium layer?
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How many atoms of K are present in 195.49 grams of K? 3.0110 × 1024 6.0220 × 1024 1.1772 × 1026 4.5797 × 1027
Ierofanga [76]
<h2>Hello!</h2>

The answer is: 3.0110x10^{24}

<h2>Why?</h2>

First, we need to look for the K molecular mass:

K=39,098 g/mol

Also, we need to remember that 1 mol of a compound or element is equal to 6,022x10^{23} of that compound.

From the statement, we are asked to calculate how many atoms of K are present in 195,49 of K.

So, doing the calculations, we have:

195,49g*\frac{1mol}{39,08}*\frac{6,022x10^{23} atoms}{1 mol K} =3,0110x10^{24} \\

So, we have 3.0110x10^{24} atoms of K in 195,49 grams of K.

Have a nice day!

3 0
3 years ago
Why do we use anhydrous diethyl ether? Choose the right answer.
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The answer is <em>B</em>

Explanation:

4 0
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