An element X has atomic number 3 and mass number 7. [2] a. How many neutrons are present in the atom of element X. b. Draw a well labelled structure of an atom of element X, showing the nucleus , electron distribution in properly mentioned shells and writing the electronic configuration.
Please answer its urgent!!!
Answers
Answered by
1
Answer:
Sodium carbonate + acetic acid → Sodium acetate + carbon dioxide + water
Solution:
Sodium carbonate + acetic acid → Sodium acetate + carbon dioxide + water
5.3g 6g 8.2g 2.2g 0.9g
As per the law of conservation of mass, the total mass of reactants must be equal to the total mass of
products
As per the above reaction, LHS = RHS i.e., 5.3g + 6g = 2.2g + 0.9 g + 8.2 g = 11.3 g
Hence the observations are in agreement with the law of conservation of mass.
Answered by
1
Answer:
a. No. of neutrons= 7-3=4
b. Electronic Configuration:2,1
Attachments:
Similar questions