Answer:
The similarity is that Elements and Compunds exist in stable form because of the bonds formed between their atoms. The difference is that an element is a material that consists of a single type of atom and a compound consists of two or more types of elements held together by covalent or ionic bonds.
Explanation: Google
The pH of the solution depends on the concentration of the ions. Hence, option C is correct.
<h3>What is pH?</h3>
pH is a measure of how acidic/basic water is.
The pH of a solution defines the acidic or basic nature of the solution.
If a solution has a pH greater than 7 then the solution is basic.
If pH is less than 7 then the solution is acidic and at pH 7 the solution is neutral.
Thus we can say that the pH of a particular solution is directly proportional to the concentration of ion present in the solution
Learn more about the pH here:
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Answer:
salt mass=102.5gCrCl3.6H2O
Explanation:
Hello !
To know how much CrCl3.6H2O we need, we follow the steps below
First we have to know what the mass of the compound is
Cr = 52g / mol
Cl = 35.5g / mol
H = 1g / mol
O = 16g / mol
We calculate the mass
52+ (35.5 * 3) + 6 * (2 * 1 + 16) = 266.5g
We have 20g Cr, so we calculate the amount of salt:
20gCr * (266.5g salt / 52gCr) = 102.5gCrCl3.6H2O
salt mass=102.5gCrCl3.6H2O
Answer:
the properties of catalyst are
it remains unchanged after chemical reactions
it accelerate or deaccelerate the reaction without taking part in it
Explanation:
they are used to convert raw materials into useful one
catalyst are integral in making plastics