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Sergeu [11.5K]
3 years ago
11

Nonmetals form _________ bonds by sharing electrons to complete their valence shell and increase stability.

Chemistry
2 answers:
katrin [286]3 years ago
4 0
Non metals form ionic bonds by gaining and losing electrons to complete their valence she'll and increase stability. Metals form covalent bonds by sharing electrons.
Licemer1 [7]3 years ago
3 0

covalent bonds are formed of non-metals
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For a particular isomer of C8H18, the combustion reaction produces 5104.1 kJ of heat per mole of C8H18(g) consumed, under standa
Vladimir79 [104]

Answer:

Explanation:

Hello,

Considering the chemical reaction, the enthalpy of reaction is given by:

ΔH°rxn=ΔfHCO2+ΔfHH2O-ΔfHC8H18

(ΔfHO2=0)

Taking into account that the reaction produces energy, ΔH°rxn is negative. No, solving for ΔfHC8H18:

ΔfHC8H18=-ΔH°rxn+8*ΔfHCO2+9*ΔfHH2O

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3 0
3 years ago
Sum of brother and sisters age is 26. Four times the brothers age is subtracted from three times the sisters age, the difference
lana66690 [7]

Answer : The ages of the brother and sister are, 10 and 16 years respectively.

Solution :

Let the age of brother be 'x' and the age of sister be 'y'

There are two equations formed which are,

x + y = 26      ..........(1)

3y - 4x = 8     ..........(2)

First we have to multiple equation (1) by 4 and then added equation (1) and (2), we get the value of 'y'.

4x+4y+3y-4x=8+26\\\\7y=112\\\\y=16

Now put the value of 'y' in equation (2), we get the value of 'x'

3(16) - 4x = 8

4x = 40

x = 10

The age of brother = x = 10 years

The age of sister = y = 16 years

Therefore, the ages of the brother and sister are, 10 and 16 years respectively.

3 0
3 years ago
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