rileyeddins1010
31.07.2019 •
Physics
Phosphorous reacts with chlorine gas to produce phosphorous pentachloride. calculate the mass of product produced when 25.0 g of phosphorous reacts with 25.0 grams of chlorine. calculate the mass of product produced if the reaction occurred with a 70.5 percent yield.
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Ответ:
Answer : The mass of product produced if the reaction occurred with a 70.5 percent yield will be, 20.67 grams.
Explanation : Given,
Mass of P = 25 g
Mass of
= 25 g
Molar mass of P = 30.97 g/mole
Molar mass of
= 71 g/mole
Molar mass of
= 208.24 g/mole
First we have to calculate the moles of
and 
.
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 5 moles of
react with 2 moles of 
So, 0.352 moles of
react with 
moles of 
That means, in the given balanced reaction,
is a limiting reagent and it limits the formation of products and 
is an excess reagent because the given moles are more than the required moles.
Now we have to calculate the moles of
.
As, 5 moles of
react with 2 moles of 
So, 0.352 moles of
react with 
moles of 
Now we have to calculate the mass of
.
Now we have to calculate the mass of product produced (actual yield).
Therefore, the mass of product produced if the reaction occurred with a 70.5 percent yield will be, 20.67 grams.
Ответ:
1) Yes
2)
Explanation:
1)
To solve this part, we have to calculate the pressure at the depth of the batyscaphe, and compare it with the maximum pressure that it can withstand.
The pressure exerted by a column of fluid of height h is:
where
h is the height of the column of fluid
Here we have:
h = 5440 m is the depth at which the bathyscaphe is located
Therefore, the pressure on it is
Since the maximum pressure it can withstand is 60 MPa, then yes, the bathyscaphe can withstand it.
2)
Here we want to find the force exerted on the bathyscaphe.
The relationship between force and pressure on a surface is:
where
p is hte pressure
F is the force
A is the area of the surface
Here we have:
The bathyscaphe has a spherical surface of radius
r = 3 m
So its surface is:
Therefore, we can find the force exerted on it by re-arranging the previous equation: