What is a balanced chemical equation? Why should a chemical equation be balance?
Answers
Answer:
Read the following and answer any four questions:
The following is the diagram of an electric motor:
a) Which part of the electric motor in the above figure) can be used as an armature after
some modifications?
(1) POXY
(n) YXOP
(I) ABCD
(iv) ABPQ
Page (4)
b) What are these modifications in the part mentioned above?
1) large number of turns
il) s soft iron core
(1) both large number of turns and a soft iron core
(iv) none of these
Which part in the above diagram is replaced by an electromagnet in order to make a
Commercial motor?
(1) X and Y
(ii) Pando
(im) R
(iv) None of these
d Which part in the above diagram is a device that reverses the direction of flow of
current through a circuit?
1) X and Y
(11) P and Q
(117) R
(iv) None of these
Which part in the above diagramis used as an axle in the electric motor?
6) X and Y
(11) P and q
(in) R
(iv) None of these focus on the rectangular surface. Paste / draw the picture on homework sheet with length and width description. After marking the dimensions on the picture (length and width), find its perimeter in centimeters. What would be the effect on the perimeter if we increase the height of the considered object by 3 feet? (03 Marks)
Answer:
A balanced equation is an equation in which both the number of atoms on the reactants and the product's side are equal. A chemical reaction is just a rearrangement of atoms. According to the law of conservation of mass, mass can neither be created nor be destroyed in a chemical reaction and obeying this law total mass of the elements or molecules present on the reactant side should be equal to the total mass of elements or molecules present on the product side.