Question

What is the mass in grams of 6.57 × 10²⁵ molecules of N₂

Answer 1

Answer:

110g

Explanation:

here is the answer hope it helps you.

Answer 2

Given: 6.57 * 10^ 25 molecules of N2 present

To find: Mass of given molecules

Explanation: 1 mole N2 contains 6.02* 10^ 23 molecules

Now, number of moles that consists of 6.57* 10^25 molecules= 6.57*10^25/ 6.02* 10^ 23

= 1.09* 10^2

= 109 moles

Mass of 1 mole= 28g/ mol

Mass of 109 moles= number of moles* Molar mass

= 109* 28

= 3052 g

Therefore, the mass of 6.57 * 10^25 molecules of N2 is 3052 grams.