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AleksandrR [38]
3 years ago
10

What is the strongest intermolecular force

Chemistry
2 answers:
aliya0001 [1]3 years ago
7 0
The strongest of the intermolecular forces are hydrogen bonds
Alisiya [41]3 years ago
4 0
Hydrogen bonds is your Answer 
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Calculate the number of moles of caco3 (calcium carbonate, or limestone) in a 20.0g sample of this substance
Brrunno [24]
First calculate for the molar mass of the given formula unit, CaCO₃. This can be done by adding up the product when the number of atom is multiplied to its individual molar mass as shown below.

     molar mass of CaCO₃ = (1 mol Ca)(40 g Ca/mol Ca) + (1 mol C)(12 g of C/1 mol of C) + (3 mols of O)(16 g O/1 mol O) = 100 g/mol of CaCO₃

Then, divide the given amount of substance by the calculated molar mass.
            number of moles = (20 g)(1 mol of CaCO₃/100 g)
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<em>Answer: 0.2 moles</em>
6 0
3 years ago
Someone help me please.. I will mark as brainliest I promise...​
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5 0
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Calculate the molality of a solution prepared by dissolving 175 g of KNO3 in 750 g of water. (round to nearest hundreth)
Wittaler [7]
We will get the molality from this formula:
Molality = no.of moles of solute / Kg of solvent 

So first we need the no.of moles of KNO3 = the mass of KNO3 / molar mass of KNO3
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