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Alex
4 years ago
13

How many resonance structures are possible for hydroxide ion? A. 3 B. none C. 2

Chemistry
1 answer:
m_a_m_a [10]4 years ago
5 0
First, how many valence electrons does hydroxide ion have? If it has something like 6 it would need 2 to get the max total of 8. Or perhaps it's 7. Then only one is needed. But if the number is 8 then 0 is required
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19. If it takes more energy to break the bonds of the reactants than is released when the bonds of
frozen [14]

Answer:

If it takes more energy to break the original bonds than is released when the new bonds are formed, then the net energy of the reaction is negative. This means that energy must be pumped into the system to keep the reaction going. Such reactions are known as endothermic.

Explanation:

5 0
3 years ago
It is possible to make a model of a fission chain reaction with mousetraps and table tennis balls, with the balls placed on an a
konstantin123 [22]

Answer:

The table tennis balls represent neutrons that are released when the nucleus splits and cause other nuclei to split

Explanation:

Nuclear fission is defined as the separation of a nucleus into two smaller nuclei.

It takes a neutron to set off a nuclear fission reaction. When that occurs, neutrons are released and those neutrons in turn are what set off other nuclear fissions. This is defined as a Nuclear Fission Chain Reaction. In the model, the one tennis ball that will be thrown will  be modeled as the starting neutron that sets of the initial (first) fission. The mouse traps with tennis balls represent the other nucleuses waiting to be struck by the one tennis ball. Once the initial tennis ball strikes the first mouse trap, that mouse trap will release its tennis ball hitting others and continuing the cycle.

It can also be modeled as such:

6 0
3 years ago
Valnece electrons of Zn
Nady [450]
This means that neutral zinc atom has a total of 30 electrons surrounding its nucleus. To see how many of these electrons are valence electrons, write the electron configuration of a neutral zinc atom. Notice that the outermost shell, which for zinc is the fourth shell, n=4, has two electrons. Hope this helps. :)
6 0
3 years ago
What is the name of the specialized type of cell in human eyes which help to detect color?
Tomtit [17]

The specialized type of cell in human eyes which help to detect color, a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, that is called a retina.

7 0
4 years ago
Read 2 more answers
Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 17. g of octane is mi
Lisa [10]

Answer: 52.8 g of CO_2

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of octane

\text{Number of moles}=\frac{17.0g}{114g/mol}=0.150moles

b) moles of oxygen

\text{Number of moles}=\frac{93.0g}{32g/mol}=2.91moles

2C_8H_{18}+25O_2\rightarrow 16CO_2+18H_2O

According to stoichiometry :

2 moles of C_8H_{18} require 25 moles of O_2

Thus 0.150 moles of  C_8H_{18} require=\frac{25}{2}\times 0.150=1.875moles  of O_2

Thus C_8H_{18} is the limiting reagent as it limits the formation of product and O_2 is the excess reagent.

As 2 moles of C_8H_{18} give =  16 moles of CO_2

Thus 0.150 moles of C_8H_{18} give =\frac{16}{2}\times 0.150=1.2moles  of CO_2

Mass of CO_2=moles\times {\text {Molar mass}}=1.2moles\times 44g/mol=52.8g

Thus 52.8 g of CO_2 will be produced from the given masses of both reactants.

8 0
3 years ago
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