Brooke decides to model a lunar eclipse. She attaches a large poster of the Sun to her wall to represent the Sun. She then decid
1 answer:
You might be interested in
The volume of sphere can be calculated using the following formula:
Here, r is radius of the sphere which is 3.5 cm. Putting the value,
This is equal to the volume of lead, density of lead is thus, mass of lead can be calculated as follows:
m=d×V
Putting the values,
Let the mass of ore be 1 g, 68.6% of galena is obtained by mass, thus, mass of galena obtained will be 0.686 g.
Now, 86.6% of lead is obtained from this gram of galena, thus, mass of lead will be:
m=0.686×0.866=0.5940 g
Therefore, 0.5940 g of lead is obtained from 1 g of ore for 100% efficiency, thus, for 92.5% efficiency
1 g of lead obtain from grams of ore.
Thus, 2041.2 g of lead obtain from:
Therefore, mass of ore required to make lead sphere is 3.715 kg.
<u>Answer:</u> The total pressure of the container will be 2.00 atm
<u>Explanation:</u>
We are given:
Initial moles of phosphorus pentachloride = 1.00 atm
For the given chemical reaction:
By Stoichiometry of the reaction:
1 mole of produces 1 mole of
and 1 mole of chlorine gas
So, 1.00 atm of will also produce 1.00 atm of
and 1.00 atm of chlorine gas when the reaction goes to completion.
Total pressure of the container when the reaction goes to completion = 1.00 + 1.00 = 2.00 atm
Hence, the total pressure of the container will be 2.00 atm