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Flauer [41]
4 years ago
5

Why do covalent compounds tend to have lower melting points than ionic compounds?

Chemistry
2 answers:
vitfil [10]4 years ago
6 0
Because ionic compounds' strong bonds form network structures, which have a stronger attraction than the covalent compounds which are molecules.
Advocard [28]4 years ago
4 0
Simple molecular substances consist of molecules in which the atoms are joined by strong covalent bonds. Their molecules are held together by weak forces, so these substances have low melting and boiling points. ... They have high melting and boiling points.
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Which formula equation represents the burning of sulfur to produce sulfur dioxide?
Firlakuza [10]

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6 0
3 years ago
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A fungus like the one that causes athletes foot causes disease by? A producing allergies B spreading spores c absorbing nutrient
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Is it possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recess
Fynjy0 [20]
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8 0
4 years ago
A solid piece of aluminum (51.0 g) was added to a solution of sodium hydroxide (84.1 g) in water, A balanced equation for this r
EastWind [94]
M_{Al}=26,98\frac{g}{mol}\\&#10;m=51g\\\\&#10;n=\frac{m}{M_{Al}}=\frac{51g}{26,97\frac{g}{mol}}\approx1,89mol\\\\\\&#10;M_{NaOH}=39,4\frac{g}{mol}\\&#10;m=84,1g\\\\&#10;n=\frac{m}{M_{NaOH}}=\frac{84,1g}{39,4\frac{g}{mol}}\approx2,14mol

<span>2 NaOH(aq)+ 2 Al(s)+ 2 H</span>₂<span>O → 2 NaAlO</span>₂<span>(aq)+ 3 H</span>₂<span>(g)
</span>  2mol      :     2mol           :                                  3mol
2,14mol   :     1,89mol      :                                  2,835mol
remains         completely consumed
2,14-1,89=0,25mol


A) Al

B)  

M_{NaOH}=39,4\frac{g}{mol}\\&#10;n=0,25mol \Rightarrow \ \ \ m=n*M_{NaOH}=0,25mol*39,4\frac{g}{mol}=9,85g

C)
n=2,835mol\\&#10;M_{H_{2}}=2,02\frac{g}{mol} \Rightarrow \ \ \ m=n*M_{H_{2}}=2,835mol*2,02\frac{g}{mol} \approx 5,73g

7 0
3 years ago
so im really tired but i need to get my work done so can someone plz help me i will give u 50 points if u help me with most and
serg [7]

Which part is your question?

4 0
3 years ago
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