Si compro un televisor a 30.000 pesos y lo pago en 12 cuotas con un recargo del 15% ¿Cual sera el valor de cada cuota?¿ Cual ser
1 answer:
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Answer : The for the reaction is, 54.89 KJ
Solution : Given,
Mass of ZnS = 48.7 g
Molar mass of ZnS = 97.474 g/mole
First we have to calculate the moles of ZnS.
The balanced combustion reaction is,
From the given reaction, we conclude that
As, 2 moles of ZnS gives energy = 220 KJ
So, 0.499 moles of ZnS gives energy =
Therefore, the for the reaction is, 54.89 KJ
Answer:
B) 1st C sp3 ; 2nd C sp3 ; O sp3
Explanation:
Both carbons in ethanol have an sp³ configuration of their orbitals, given that each carbon atom binds to four other atoms, as can be seen on the extended formula in the attachment.
In these carbons (1st and 2nd) one s orbital and three p orbitals are hybridized to form four hybrid orbitals sp³. These orbitals form four bonds and their bond angles are close to the tetrahedral value of 109.5º,as can be seen for methanol which also has an sp³ configuration.
The oxygen atom can also be described as having sp³ hybrid orbitals. Two of the four hybrid sp³ orbitals in oxygen are occupied by lone electron pairs, and two are used to form bonds with other atoms (in this case the oxygen is bonded to a carbon atom and a hydrogen atom).
Therefore, the three central atoms have an sp³ configuration.
Answer:
C
Explanation:
Please see the attached picture for the explanation.
<u>Le Châtelier's principle</u><u>:</u>
When a stress is applied to a system at equilibrium, the system will respond by shifting in the direction that opposes/ minimizes the effect of the stress.
• This stress could be the addition or removal of a product or reactant, changes in the concentration of the products or reactants, or a change in temperature.
☆ Why can heat be written on the same side of the products when the reaction is exothermic?
• Exothermic means that heat is released, thus heat can be treated as a product.
• I like to remember it as Exothermic → Exit
