Question

calculate the mass of the following no spam no copy each question carries 1 marks​

Answer 1

Answer:

Explanation:

• 5 moles of Ammonia Part:

1 mol of Ammonia=17g

so...

5mol= 17g x 5=85g

• 0.5 moles of water part:

1 mol of Water=18g

so...

0.5 mol= half of 18 is =9

• 1.50 moles of NaCl ions

• Na is Sodium, and the Periodic Table says that Sodium has an atomic mass of 22.99.
• Cl is Chlorine, and the Periodic Table says that Sodium has an atomic mass of 35.99.
• (1 x 22.99) + (1 x 35.99) = 58.4 g/mol
• We need to multiply our original value by 1.50.
• (1.50) x (58.44/1) = 87.66 = 87.7 g

• 0.2 moles of oxygen atoms:

The mass of a single atom of oxygen is 16.

Therefore, the mass of 0.2 moles of oxygen atom is 3.2 grams

0.2 x 16=3.2 grams.