The value of Avogadro's number is $6.02214076 imes 10^{23}$ $mol^{-1}$. A student experimentally determines Avogadro's number to be $6.022141 imes 10^{23}$ $mol^{-1}$. When reporting this value with the correct number of significant figures reflecting the precision of the experimental result, the student should report:

A student measures two lengths as $2.99$ m and $0.0099$ m. What is the sum of these lengths, taking into account significant figures?

What is the area of a disc of radius 1.1 cm?

The length, breadth and thickness of a block are given by $l = 12cm,\;b = 6\;cm\;$ and $\;t = 2.45cm$ The volume of block according to the idea of significant figures should be

A current of 2..34 A flows in a resistance of 11.111111${\rm{\Omega }}$. The potential difference across the given resistance with due regard for significant figure is

What is 15.48 rounded to one decimal place?

The respective number of significant figures for the numbers 23.023, 0.0003 and $2.1 imes {10^{ - 3}}$ are

If $L = 2.331\;cm,\;B = 2.1\;cm,$ then L+B=

A student has measured the length of a wire equal to 0.04580 m. This value of length has the number of significant figures equal to

The mass of a sample is measured as 23.647 g. If the instrument used has a precision of 0.01 g, what is the correctly rounded mass?

A measurement yields a value of 0.004250 m. How many significant figures are in this measurement?