In the chemical formula 3no2 the number 3 is a

Answer : The number '3' is a moles.

Explanation :

The given chemical formula is,

As we know that,

For 1 mole of , there are 1 mole of nitrogen and 2 moles of oxygen.

For 3 mole of , there are 3 moles of nitrogen and 6 moles of oxygen.

So, from this we conclude that the number '3' present before represent the number of moles.

Hence, the number '3' is a moles.

answer; /// i do believe that the correct answer is (a) boiling

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong