They don't usually.
It is not. "Scientific notation" uses a base of 10. The correct notation would be 1.251 x 10^8
Scientific notation gives a compact notation, which is especially useful for writing down - and doing calculations with - very large, and very small, numbers.
The practical uses of scientific notation are to compute very large or very small numbers.
Because sometimes numbers get very big or very small.
Scientific notation in chemistry is regulated by IUPAC (International Union of Pure and Applied Chemistry). The URL address is at this link.
yes marks will be deducted if scientific notation is not followed as scientific notation has specific meaning .thus it is better to use scientific convention
It is not. "Scientific notation" uses a base of 10. The correct notation would be 1.251 x 10^8
They don't usually.
Scientific notation gives a compact notation, which is especially useful for writing down - and doing calculations with - very large, and very small, numbers.
The practical uses of scientific notation are to compute very large or very small numbers.
Because sometimes numbers get very big or very small.
Most of the time, chemists deal with extremely large or extremely small numbers. They use scientific notation to conveniently write these numbers in decimal form.
Because it uses fewer digits as for example 9,000,000,000,000,000 in scientific notation is 9.0*10^15
Scientific notation takes one digit before the decimal point and uses multiples of 10 to represent the rest of the digits. In this case, scientific notation is not really practical. The answer is 1.003 x 101
it is a way of writing numbers large or small and it is important in math
Dealing with numbers that are very large or very small.