According to Gases law, we know,
PV/T = Constant
So, P₁V₁/T₁ = P₂V₂/T₂
Here, P₁ = 108 kPa
V₁ = 592.2 mL
T₁ = 10+273 = 283 K
P₂ = ?
V₂ = 750 mL
T₂ = 28.9+273 = 301.9
Substitute their values,
108 * 592.2 / 283 = P₂ * 750 / 301.9
P₂ = 63957.6 * 301.9 / 283 * 750
P₂ = 19308799.44 / 212250
P₂ = 90.97 kPa
In short, Your Final Answer would be: 90.97 kPa
Hope this helps!
The flame test is commonly used to identify different metal ions by how they get excited in the presence of a flame.
Typically a nichrome wire is dipped in a solution of metal cations and then presented to a flame. The flame emits a different color than normal, depending on the type of metal cation. Each metal ion gets excited by the flame and as the electrons change energy levels they emit a photon of light, thus changing the color. Since each metal cation has unique energy levels, the colors differ depend on the metal cation.
I hope this helps.
Mass C₂H₂ needed : 22.165 g
<h3>Further explanation</h3>
Reaction
2C₂H₂+
5O₂ ⇒ 4CO₂ + 2H₂O
75.0 grams of CO₂ , mol CO₂ (MW=44 g/mol) :
mol C₂H₂ :
mass C₂H₂ (MW=26 g/mol) :
Answer: The time is 0.69/k seconds
Explanation:
The following integrated first order rate law
ln[SO₂Cl₂] - ln[SO₂Cl₂]₀ = - k×t
where
[SO₂Cl₂] concentration at time t,
[SO₂Cl₂]₀ initial concentration,
k rate constant
Therefore, the time elapsed after a certain concentration variation is given by:
![t=\frac{ln[SO_{2}Cl_{2}]_{0} - ln[SO_{2}Cl_{2}]}{k}=\frac{ln\frac{[SO_{2}Cl_{2}]_{0}}{[SO_{2}Cl_{2}]} }{k}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bln%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%20-%20ln%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%7Bk%7D%3D%5Cfrac%7Bln%5Cfrac%7B%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%7D%7B%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%20%7D%7Bk%7D)
We could assume that SO₂Cl₂ behaves as a ideal gas mixture so partial pressure is proportional to concentration:
![[SO_{2}Cl_{2}]= \frac{n_{(SO_{2}Cl_{2})}}{V}}=\frac{p_{(SO_{2}Cl_{2})}}{RT}}](https://tex.z-dn.net/?f=%5BSO_%7B2%7DCl_%7B2%7D%5D%3D%20%5Cfrac%7Bn_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BV%7D%7D%3D%5Cfrac%7Bp_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BRT%7D%7D)
In conclusion,
t = ln( p(SO₂Cl₂)₀/p(SO₂Cl₂) )/k
for
What iron gives in its abundance, it takes away in it's inability to really conduct heat and electricity well. There is enough copper around, if we are careful in its use, to make copper bottomed pots and pans. Of the three best conductors in the world (silver, gold and copper) only copper has enough around and can be inexpensively mined that we make use of it.
If you google dr. copper, you will find he is an economist as well. Copper measures the wealth of an economy by how much is used. So iron might be cheaper and more abundant, but copper will save you much more in trying to do something with it.
