Answer:
The main group number for an element can be found from its column on the periodic table.
Explanation:
For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.
Answer:
The reaction isn't yet at equilibrium. The overall reaction will continue to move in the direction of the products.
Assumption: this system is currently at 
.
Explanation:
One way to tell whether a system is at its equilibrium is to compare its reaction quotient 
with the equilibrium constant 
of the reaction.
The equation for is quite similar to that for . The difference between the two is that requires equilibrium concentrations, while can be calculated even when the system is on its way to equilibrium.
For this reaction,
![\displaystyle Q = \rm \frac{[CS_2]\cdot [H_2]^{4}}{[CH_4]\cdot [H_2S]^{2}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20Q%20%3D%20%5Crm%20%5Cfrac%7B%5BCS_2%5D%5Ccdot%20%5BH_2%5D%5E%7B4%7D%7D%7B%5BCH_4%5D%5Ccdot%20%5BH_2S%5D%5E%7B2%7D%7D)
.
Given these concentrations,
![\displaystyle Q = \rm \frac{[CS_2]\cdot [H_2]^{4}}{[CH_4]\cdot [H_2S]^{2}} =\frac{1.51\times (1.08)^{4}}{1.15\times (1.20)^{2}} \approx 1.72](https://tex.z-dn.net/?f=%5Cdisplaystyle%20Q%20%3D%20%5Crm%20%5Cfrac%7B%5BCS_2%5D%5Ccdot%20%5BH_2%5D%5E%7B4%7D%7D%7B%5BCH_4%5D%5Ccdot%20%5BH_2S%5D%5E%7B2%7D%7D%20%3D%5Cfrac%7B1.51%5Ctimes%20%281.08%29%5E%7B4%7D%7D%7B1.15%5Ctimes%20%281.20%29%5E%7B2%7D%7D%20%5Capprox%201.72)
.
The question states that at , 
. Assume that currently this system is also at . (The two temperatures need to be the same since the value of depends on the temperature.)
It turns out that 
. What does this mean?
- First, the system isn't at equilibrium.
- Second, if there's no external changes, the system will continue to move towards the equilibrium. Temperature might change. However, eventually will be equal to , and the system will achieve equilibrium.
In which direction will the system move? At this moment, 
. As time proceeds, the value of will increase so that it could become equal to . Recall that is fraction.
When the value of increases, either its numerator becomes larger or its denominator becomes smaller, or both will happen at the same time. However,
- Concentrations on the numerator of are those of the products;
- Concentrations on the denominator of are those of the reactants.
As time proceeds,
- the concentration of the products will increase, while
- the concentration of the reactants will decrease.
In other words, the equilibrium will move towards the products.
The water displacement method is a set of measurements used to calculate the volume of an irregularly shaped object. These objects are commonly known as irregularly shaped solids.
<h3>What is water displacement method ?</h3>
The displacement method (also known as the submersion or dunking method) can be used to accurately measure the volume of the human body and other irregularly shaped objects by measuring the volume of fluid displaced when the object is submerged.
Place your jewelry on a table or in your hand, and pour some white vinegar directly on the metal (a dropper can also be used). If the metal of the jewelry changes color, it is not pure gold; if it continues to shine, you have real gold in your hand.
Thus, The water displacement method is a set of measurements used to calculate the volume of an irregularly shaped object.
To learn more about water displacement method, follow the link;
brainly.com/question/17342316
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Hello
the asnwer is <span> sulfur dioxide plus water react to sulfuric acid
have a nice day</span>
Answer:
it can allow more room for additional living things in the habitat
Explanation:
Use water for an example.
- Taking water can destroy a fish habitat.
- Using excess water can cause water to run out.
- Taking/using water leaves less amounts for others/organisms.
Taking water does not allow additional room for organisms in a habitat.
