328 % means 0.328 g of KCN in 100 g of solution
0.328 g of KCN ---------> 100 g of solution
1120 * 10^-3 g of KCN ------> (100 / 0.328) * 1120 * 10^-3
= 341 g of solution
Its Phosphorus with a negative 3 charge.
This would be c as for the amswer
The complete question is:
To liquify a fixed amount of gas, one may 1. increase the temperature while decreasing the pressure. 2. increase the volume while increasing the pressure. 3. decrease the temperature while decreasing the pressure. 4. decrease the temperature while increasing the pressure. 5. decrease the volume while decreasing the pressure.
Answer:
4. decrease the temperature while increasing the pressure
Explanation:
The thermodynamics explains the sate of a substance (generally a gas or a liquid), which is its characteristics: temperature, pressure, volume, enthalpy, etc. When they changed, the state changes. Some of these changes may induce a physical change.
A gas has distant and agitated molecules, thus, the pressure is low and the temperature is higher, and a liquid has more close and less agitated molecules, so with higher pressure and low temperature.
Thus, to liquefy a fixed amount of has one may decrease the temperature while increasing the pressure.
Answer : The volume of gas needed are, 90 L
Explanation : Given,
Volume of = 60 L
Now we have to determine the volume of needed.
As we know that at STP, 1 mole of gas contains 22.4 L volume of gas.
The given balanced chemical reaction is:
By the stoichiometry we can say that, 2 moles of react with 3 moles of oxygen gas to give 2 moles of gas and 2 moles of water vapor.
From the balanced reaction we conclude that,
As, volume of react with volume of gas
So, volume of react with volume of gas
Thus, the volume of gas needed are, 90 L