Answer:
You should not use an open flame to heat the solvent and the solvent should be heat in a stoppered flask to vapour away from the open flame
Explanation:
Answer: The number of molecules of gas the flask contains is ![0.674\times 10^{23}](https://tex.z-dn.net/?f=0.674%5Ctimes%2010%5E%7B23%7D)
Explanation:
According to ideal gas equation:
P = pressure of gas = 1 atm (STP)
V = Volume of gas = 2.50 L
n = number of moles = ?
R = gas constant =
T =temperature = 273K (STP)
According to Avogadro's law:
1 mole of gas at STP contains =
molecules
Thus 0.112moles of gas at STP contains =
molecules
The number of molecules of gas the flask contains is ![0.674\times 10^{23}](https://tex.z-dn.net/?f=0.674%5Ctimes%2010%5E%7B23%7D)
Answer:
Fe2(SO4)3 has the greater iron content.
Explanation:
Hello!
In this case, considering the content of a specific element in a compound, we must take into account the subscript is has in the formula, for instance FeS has one iron atom, Fe2(SO4)3 has two iron atoms and FeCl2 has one iron atom; thus, by assuming one mole of each compound, we can compute the moles of iron there:
![n_{Fe}^{FeS}=1molFeS*\frac{1molFe}{1molFeS}=1molFe \\\\n_{Fe}^{Fe_2(SO_4)_3}=1molFe_2(SO_4)_3*\frac{2molFe}{1molFe_2(SO_4)_3}=2molFe\\\\n_{Fe}^{FeCl_2}=1molFeCl_2*\frac{1molFe}{1molFeCl_2}=1molFe](https://tex.z-dn.net/?f=n_%7BFe%7D%5E%7BFeS%7D%3D1molFeS%2A%5Cfrac%7B1molFe%7D%7B1molFeS%7D%3D1molFe%20%5C%5C%5C%5Cn_%7BFe%7D%5E%7BFe_2%28SO_4%29_3%7D%3D1molFe_2%28SO_4%29_3%2A%5Cfrac%7B2molFe%7D%7B1molFe_2%28SO_4%29_3%7D%3D2molFe%5C%5C%5C%5Cn_%7BFe%7D%5E%7BFeCl_2%7D%3D1molFeCl_2%2A%5Cfrac%7B1molFe%7D%7B1molFeCl_2%7D%3D1molFe)
It means that Fe2(SO4)3 would have the greatest iron content.
Best regards!
C. Grams per Cubic Centimeter