Answer:
Precipitate
Explanation:
A precipitate is a solid formed from a chemical solution
First let us compute for the number of moles of butane
(molar mass = 58.12 g/mol)
number of moles = 145 g / (58.12 g/mol) = 2.49 mol
<span>We use the ideal
gas equation to calculate the volume:</span>
<span> V = n R T / P</span>
V = 2.49 mol * 62.36367 L torr / mol K * 308.15 K / 745
torr
<span>V = 64.35 L</span>
C or A I may be incorrect but those are what I think it is
Answer:
a) False
b) False
c) True
Explanation:
a) Most sulfur oxides formed during combustion come from sulfur in the air: The sulfur burns in presence of oxygen to produce sulfur oxides, the source of sulfur is anthropogenic activities (Human activities).
So the given statement is false.
b) A flue gas scrubber removes SO2 pollution in a coal-fired power plant by using lime to convert the SO2 into alcohols:
False
The lime reacts with sulfur dioxide to give carbon dioxide and calcium sulfite.
c) True
c)
To do this, what we need to do is find the mass of PbCl2 as a whole, and the masses of Pb and Cl2 on their own.
So, the mass can be found by locating the atomic mass on the periodic table! It is that easy :)
The mass of Pb is 207.2
The mass of Cl2 is 70.906, since the mass is 35.453 and we have two of them.
When we add it together, the total mass of PbCl2 is 278.106, all we need to do is add the two masses we calculated before, together!
The formula for percent composition is:
element mass
---------------------- x 100
compound mass
So, lets do the % composition of Pb first.
207.2
---------
278.106
When we divide the two and multiply that answer by 100, we get 74.5%. So, the percent composition of Lead is 74.5%.
Now, lets do the same for Cl!
70.906
------------ x 100
278.106
The answer we get for that is 25.5%. So, that is the percent composition of Cl in PbCl2.
Hope I could help! :)