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Ainat [17]
3 years ago
7

Which statement describes the dependent variable?

Chemistry
1 answer:
Lelu [443]3 years ago
6 0
The statement which describes the dependent variable would be the measured variable. We usually use the independent variable and manipulate it and change its levels to see how the levels of the measurable (dependent) variable change.
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The equilibrium constant, Kc , for the decomposition of COBr2 COBr2(g) ↔ CO(g) + Br2(g) is 0.190. What is Kc for the following r
charle [14.2K]

Answer:

2CO(g)+2Br_2(g)\rightleftharpoons 2COBr_2(g)

27.70 is K_c' for the reaction.

Explanation:

COBr_2(g)\rightleftharpoons CO(g) + Br_2(g)

The equilibrium constant of the reaction = K_c=0.190

The expression of equilibrium constant is given by :

K_c=\frac{[CO][Br_2]}{[COBr_2]}..[1]

2CO(g)+2Br_2(g)\rightleftharpoons 2COBr_2(g)

The equilibrium constant expression for above reaction can be written as:

K_c'=\frac{[COBr_2]^2}{[CO]^2[Br]^2}

K_c'=\frac{1}{(K_c)^2} ( from [1])

K_c'=\frac{1}{(0.190)^2}=27.70

27.70 is K_c' for the reaction.

7 0
4 years ago
Can someone help me with the question in the image
timama [110]

The good ozone protects us from the UV/ harmful radiations whereas bad ozone is an air pollutant.

Explanation:

  • There are two types of ozone layer found in the earth's atmosphere extending from troposphere to stratosphere. They are good ozone and bad ozone.
  • Bad ozone as mentioned earlier it is an air pollutant and found in the ground level of earth, most accurately the troposphere. Bad ozone is formed in the ground level of earth's atmosphere by the reaction between nitrogen oxides and organic compounds which are volatile
  • The Good ozone is found in the stratosphere layer of the earth's atmosphere. They protect us from harmful radiations. Good ozone layer in the stratosphere of the atmosphere is being destroyed by hydrocarbons, CFCs, and human intervention
7 0
4 years ago
There are seven types of crystals. Which of these is not one of the seven?
Gelneren [198K]
The answer is B. tetraclinic
3 0
3 years ago
Read 2 more answers
Consider the following four structures: What is the relationship of I and II? What is the relationship of I and III? What is the
daser333 [38]

Answer:

The different structures are shown in the attachment.

I and II - structural isomers

I and III - Structural isomers

I and IV - structural isomers

II and III - structural isomers

II and IV - structural isomers

III and IV - stereoisomers

Explanation:

The knowledge of Isomerism is tested here; there are two types of isomerism ; structural and stereoisomerism.

  • Structural Isomers have similar molecular and different double bond positioning, these occurs mostly in ALKENE FAMILY.
  • Stereo-isomers have the same molecular formular and similar patterns but differ in their spatial arrangement. trans and cis are typical examples of stereo-isomers.

From the question; Relationship between I and II is that they are structural isomers since they have the same molecular formula, but different bond atom arrangement and infact they are the same compound.

  • Relationship between I and III is that they are structural isomers with similar molecular formular but differ in the double bond position.
  • Relationship between I and IV is that they are structural isomers with similar molecular formula but different double bond arrangement.
  • Relationship between II and III is that they are structural isomers with similar molecular formular but different double bond position
  • Relationship between II and IV is that they are also structural isomers with the same molecular formular but different double bond position.
  • Relationship between III and IV is that they are stereo-isomers with same molecular formula but different spatial arrangement, hence cis and trans.

4 0
3 years ago
(1) In an experiment for determining the density of water, the following results
Angelina_Jolie [31]

Given parameters:

mass of an empty beaker = 65gm

mass of the beaker and water = 165gm

volume of water = 100cm³

Unknown:

Density of water  = ?

Solution:

Density is the mass per unit volume of a substance;

           Density  = \frac{mass}{volume}

To find the mass of the water ;

   Mass of water  = Mass of beaker and water - mass of an empty beaker

                            = 165g - 65g

                           = 100g

So input parameters and solve;

         Density  =  \frac{100g}{100cm^{3} }  

         Density of the water in the beaker  = 1g/cm³

4 0
4 years ago
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