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Savatey [412]
2 years ago
7

Are the following bonds (A) ionic bonds or (B) covalent bonds?

Chemistry
1 answer:
qaws [65]2 years ago
4 0
Ionic  bond  are  formed  between  a   metal  and  a  non  metal  while  covalent  bonds  are  formed  between  two  non  metals.
        ionic  compounds  include
    Na-cl,  Mg-Br,  Ca-s,  Ba-F  (are  ionic  since their  bond  is  between a  metal  and  non metal)

covalent  bonds  include
 O-H,  N-O,  C-H,  F-F,  N-H ,  C-O,  F-F ( are  covalent  since  their  bond  is  between  two  non  metal
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Neutrons are very important to an atom's ________<br> properties
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Answer:

Intrinsic properties

Explanation:

Neutron affects the mass of an atom and intrinsic properties depend on the mass of the substance

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2 years ago
A hypothesis explains what the scientist thinks will happen during the experiment.
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The combustion of 0.25 mol of an unknown organic compound results in the release of 320 kJ of energy. Which of the compounds in
vichka [17]

Answer: C. ethanol

The enthalpy of combustion is the amount of heat produced when one mole of ethanol undergoes complete combustion at 25 ° C and 1 atmosphere pressure, yielding products also at 25 ° C and 1 atm.

<u>The enthalpy of combustion of the unknown compound is</u>

ΔH = - 320 kJ / 0.25 mol = - 1280 kJ / mol

<u>To choose a probable compound according to this combustion enthalpy, we must evaluate the deviation in relation to the values reported in the literature for the three probable compounds</u> (methane, ethylene and ethanol). The deviation (e%) will be calculated according to the following equation,

e% =  ( | ΔHx - ΔH | / ΔHx ) x 100%

where ΔHx is the enthalpy of combustion of the probable compound.

The following table shows the combustion enthalpies of the probable compounds and their deviation in relation to the enthalpy of ΔH = - 1280 kJ / mol

Compound Enthalpy of combustion (kJ/mol)   Deviation

Methane                        - 890.7                                 43.8%

Ehylene                         -1411.2                                   9.3%

Ethanol                        -1368.6                                    6.5%

According to the previous table, we can say that the most probable compound is ethanol, since it has the smallest deviation in relation to the experimental enthalpy value of combustion.

5 0
3 years ago
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nydimaria [60]
What’s the questions ?
5 0
2 years ago
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How many moles are in 6.80 x 10^23 atoms <br> of gold, Au?
frosja888 [35]

Answer:

1.13 moles Au

Explanation:

Moles Au = 6.80x10²³atoms / 6.023x10²³atoms/mole = 1.13 moles Au

8 0
2 years ago
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