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LiRa [457]
3 years ago
5

A reversible reaction is said to be in equilibrium when

Chemistry
1 answer:
Vilka [71]3 years ago
8 0

Answer: C) the rate backward reaction equals the rate of the forward reaction.

Explanation:

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An ordered list of chemical substances is shown.
alina1380 [7]

Answer : The correct option is, (C) 2, 4 and 5.

Explanation :

Combustion reaction : It is a type of reaction in which a hydrocarbon react with an oxygen molecule to give carbon dioxide, water as a product.

For example : Methane react with oxygen to give carbon dioxide and water.

CH_4+2O_2\rightarrow CO_2+2H_2O

In the given list of chemical substances, CuO,Cu_2O,Li_2O are in oxide form. They can not be both reactant and product of a single combustion reaction.

In the given list, C_2H_5NH_2 is the only hydrocarbon which shows a combustion reaction. That means C_2H_5NH_2 react with O_2 to give CO_2,H_2O and N_2 as a product.

The balanced combustion reaction of C_2H_5NH_2 is,

20C_2H_5NH_2+40O_2\rightarrow 40CO_2+7H_2O+10N_2

Therefore, the correct answer is, (C) 2, 4, and 5.

8 0
3 years ago
At what phase of mitosis are two separate nuclei are formed as nuclear membranes form around
jeka57 [31]
Probably telophase because for the difference in the nuclear membrane
5 0
3 years ago
Read 2 more answers
what do animal cells need in order to maintain homeostasis A. light energy B. carbon dioxide C. chemical energy D.carbon monoxid
Alik [6]
Please correct me if I'm wrong but I think the answer is b or c 

also sorry if i do get it wrong
5 0
3 years ago
What is the percent of copper in CuS?
bonufazy [111]

Answer:

Element Symbol Mass Percent

Cuprum Cu 66.464%

Sulfur S 33.537%

Explanation:

I got this out of my module, sorry if it's wrong but i am pretty sure 97% this is correct!

7 0
3 years ago
Are there molecules of sodium chloride within a sodium chloride crystal?
alukav5142 [94]
No, within a crystal like structure or ionic lattice of sodium chloride, there are ions of Na and Cl. Na+ and Cl- respectively that are attracted to each other due to their opposite charges. Many of these ions form a crystal structure.
6 0
3 years ago
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