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ivolga24 [154]
3 years ago
8

Combustion of Methane Endothermic or Exothermic?

Chemistry
1 answer:
Misha Larkins [42]3 years ago
7 0
Idk. Idk. Idk. Idk.
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A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculat
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D. Calculate the variations in the potions of the star due to movement of Earth in its orbit

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Evaluate the Lewis structures below and pick the statements that best describes the accuracy of each of the structures. There ma
Artyom0805 [142]

Answer:

The structures shown by dots and lines to give the exact number of electrons in the outer most shell is explained by Lewis Structures.

Explanation:

Lewis structures are those structures in which the diagram is shown using the electron representation. They are easy to understand as the diagram completely depicts where the electrons are shared and where they are transferred. The diagram also explains where there is a single bond and where there is a di covalent bond or tri covalent bond explaining where the single , double or triple electron pair is shared. The electrons are shown by dots or lines.

For example CCl₄ can be shown as follows

                  ..

               .. Cl..

  ..                               ..

..Cl..----------C----------..Cl..

                   ..

                .. Cl..

The picture shows that each chlorine has six electrons in its outer shell and then a pair of electron is shared with carbon forming a single covalent bond.

Similarly methane CH4 can also be shown.

The hydrogen has one electron and it shares an electron from carbon stabilising itself forming methane.

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3 years ago
Please help ASAP
DochEvi [55]
Aluminum. chemical element with symbol Al
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All of the following are indicators of chemical change except…
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D. All of the above are indicators of chemical change
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3 years ago
The element Osminum has a density of 22.6 g/cm3. the mass of a block of Osmium with three sides of 1.01cmx0.223 cm x 0.648 cm is
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Volume of osmium = 1.01(0.223)(0.648) = 0.14595 cm3

Density = mass / volume
So density x volume = mass of osmium
22.6 x 0.14595 = 3.29845 g
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2 years ago
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