Which of the following was not a conclusion of rutherford’s gold foil experiment?
a. the atom is mainly empty space
b. the nucleus has a negative charge
c. the atom has a dense nucleus
d. alpha particles can pass through a thin sheet of gold foil
e. all of the above are correct regarding the gold foil experiment

Scientific notation always have a decimal part multiplied by 10 raised to the exponent of a positive or negative integer.

a)

b)

c)

d)

e)

When working on multiplication and division of numbers in scientific notation, the laws of indices are applied as shown in the results above.

For addition and subtraction, the both numbers in scientific notation must be made to have a common exponent before the operation can be carried out successfully.

Also note that the correct number of significant figure must be maintained in the results obtained from each operation.

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