It always shift to the direction where balance out the reaction
here
<span>It shifts in the exothermic direction.</span>
This must be a universal indicator, the pH is going down everytime you add more :)
Answer:
1+
Explanation:
the number of protons tells you which element it is in the periodic table, you can notice that there is 1 less electron that then there is protons which means that the element had to give 1 electron away. When you get rid of 1 e- you have 1 proton more that electrons so that's why it's 1+
also the element is Cr
Explanation:
(Ques- A) Why does the first method for determining volume work only for a regular-shaped object?
<u>(Ans- A)</u> <em>Because the method requires precise dimensions of objects for result, which is not possible for irregular shaped objects.</em>
(Ques - B) Will the second method for determining volume work for any object or just an odd-shaped one? Why?
<u>(Ans-B)</u> <em>It will work for both regular and irregular shaped objects since both displace equal volumes of water.</em>
(Ques - C) Is one method of measurement more accurate than the other? Why or why not?
<u>(Ans-C)</u> <em>Both are pretty accurate, with some experimental errors which may creep in accidentally. </em>
(Ques- D) Would the displacement method of measurement work for a cube of sugar? What about a cork? Why?
<u>(Ans - D)</u> <em>No, the method would not work because sugar being soluble, will dissolve in water. </em>
<em>No, the method would not work because sugar being soluble, will dissolve in water. Cork is less dense than water so floats on it, with only part of it submerged in water, resulting in displacement of less volume of water than actual volume of Cork.</em>
(Ques-E) What did you find out from this investigation? Be thoughtful in your answer.
<u>(Ans- E)</u> <em>I learnt about determining volume of different objects from this investigation. </em>(Sorry, I know its not a very thoughtful answer)
Explanation:
1.A mixture of stone, pebbles, and water is an example of a suspension. Because the particle size is more than 1000nm.
Properties of suspensions:
Suspension is a heterogeneous mixture. The constituents of the mixture are clearly visible.
The particle size will be more than 1000nm. If the suspension is left undisturbed then the particles will settle down.
Properties of Colloids:
Whereas in colloidal solutions, the particle size is in between 1nm-1000nm.
The particles will never settle down in colloid.
They show the Tyndall effect.
2.The solubility of salt at 20^oC is 30. That means the maximum amount of salt that is present in 100 g of water is 30 g.
If the temperature of a saturated solution is increased then, its solubility increases or decreases based on the nature of the solute.
For example if we take sodium chloride salt ,then its solubility is not effected by the change in temperature.
For cerium sulphate salt if temperature increases, then its solubility in water decreases.
For sugar (sucrose) its solubility increases with increase in temperature.
