How many molecules of ammonia are produced from the reaction of 9.5×10^23 molecules of nitrogen are reacted with excess hydrogen gas? N2+3H2--->2NH3
A. 1.9×10^24 molecules NH3
B. 2.9×10^24 molecules NH3
C. 2 molecules NH3
D. 9.5×10^23 molecules NH3

A) 1.9×10²⁴ molecules of ammonia

Explanation:

Given data:

Number of molecules of ammonia formed = ?

Number of molecules of nitrogen react= 9.5×10²³

Solution:

Number of moles of nitrogen react:

According to Avogadro number,

1 mole = 6.022×10²³ molecules

9.5×10²³ molecules ×1mol / 6.022×10²³ molecules

1.6 mol

Chemical equation:

N₂ + 3H₂    →     2NH₃

now we will compare the moles of nitrogen and ammonia.

            N₂        :        NH₃

             1          :         2

           1.6         :       2/1×1.6 = 3.2 mol

Number of molecules of ammonia:

1 mole =  6.022×10²³ molecules

3.2 mol × 6.022×10²³ molecules / 1mol

1.9×10²⁴ molecules

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

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