Answer: [tex]3.200\times 10^{1}[/tex]
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
1 mole of [tex]O_2[/tex] weighs= 32.0 g
Significant digits are each of the digits of a number that are used to express a number to the required degree of accuracy, starting from the first non-zero digit with exponents raised to the power of 10.
The number is written in scientific notation as [tex]6.022\times 10^{23}[/tex] contains 4 significant digits.
Thus 32 can be expressed as [tex]3.200\times 10^{1}[/tex] contains 4 significant digits.
