Answer:
I believe physical
Explanation:
If you step on the bag of chips, it would reduce them to crumbs. Wouldn't this be a physical change in the chips?
Answer:
The period number tells which is the highest energy level occupied by the electrons.
Explanation:
- The period number (denoted by n) is the outer energy level that is occupied by electrons in an atom.
- The period number that an element is in, is the number of energy levels that the element has.
- When we move across a period from left to right in a periodic table the number of electrons in atoms increases within the same orbit.
Answer : The correct option is, (A)
Explanation :
Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.
As we are given that:
Rate of disappearing component A =
Rate of appearing component B =
Rate of appearing component C =
The general reaction is:
As per question the stoichiometry relation will be:
Now put the values of rate of following components, we get:
Thus, the stoichiometry relation is:
a : b : c = 2 : 1 : 3
Thus, the required equation will be:
It should be for the total solution of 93 plus 20 grams which is 113 grams so 93 divided by 113 grams comes to 82.3% sodium sulfate and this can be checked by multiplying 113 grams by 0.823 which results in 93 grams of sodium sulphate.
C. mass is protons and neutrons. Both are in the nucleus