Kekulé/Vant Hoff and Le Bel?
Answer:
The answer is
<h2>8.89 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass of copper = 24 g
volume = 2.7 mL
The density of the metal is

We have the final answer as
<h3>8.89 g/mL</h3>
Hope this helps you
The way to working out the numbers is to increase the measure of HNO3 required by the molarity to discover what number of moles you require: 0.115. You ought to have the capacity to make sense of the recipe weight H is 1, N is 14, O is 16. The result of the quantity of moles duplicated by the recipe weight ought to give an esteem in grams. You can utilize the thickness to change over to a volume of HNO3 to add to the right volume of water.
Answer:

Explanation:
- 1 mole of any substance contains Avogadro number of particles i.e, 6.022 × 10^23 particles.
- number of of particles in n moles of a substance = n*Avogadro number
- number of moles of Ne in 2.0 g of Ne= 2/20=0.1
[number of moles=given weight/ gram molecular weight]
- so, number of particles in 2.0 g of Ne = number of particles in 0.1 moles of Ne= 0.1(6.022 × 10^23)
=