How many moles of nitrogen atoms are there present in 28 grams of nitrogen gas

2 × 6.022 × 10²³ atoms.

Explanation:It's 1 mole = mass of the nitrogen

Here we can say, mass of the nitrogen=1mole

1mole=6.022×10^23

And we can get the mass of nitrogen by

Mass of nitrogen=no. Of protons+neutrons

Mass of nitrogen=7+7

Mass of nitrogen=14u

So we get that,

Mass of the nitrogen=1mole

Then,

14g=1mole

28g=xmole

14:28::1:x

14x=28

X=2

So,

28g=2moles

answer; i believe the answer is 80%, plz check first good luck;

the following men who did not in the unification of italy were.

a) giuseppe mazzini

c) alexander ll

the other two men were camilo cavour and giuseppe garibaldi they the unification of italy by yielding territories in the italian unification. in 1861 italy was declared a united-nation state under the sardinian king victor immanuel ll.