Answer:
1.01atm
Explanation:
First, we need to calculate the numbers of mol of ammonia. This can be achieved by doing the following:
V = 3.25L
P = 652mmHg we must convert this to atm by:
760mmHg = 1atm
652mmHg = 652/760 = 0.858atm
T = 243K
R = 0.082atm.L/K /mol
n =?
PV = nRT
n = PV /RT
n = (0.858 x 3.25)/(0.082x243)
n = 0.14mol
From the question, we were to that the other gas had the same amount(0.14mol) as ammonia. We can calculate for the pressure of the gas as illustrated below:
P =?
V = 2.5L
T = 221K
R = 0.082atm.L/k/mol
n = 0.14mol
PV = nRT
P = nRT /V
P = (0.14x0.082x221) / 2.5
P= 1.01atm
Answer:
electricity
Explanation:
static hair occurs when your hair builds up an electric charge
Explanation:
Ne 8. S 6. Mg 2. Sn 4. C 4. Al 3. Te 6. Cs 1. Bi 5. Br 7. Ga 3. P 5.
Answer : The value of for the reaction is +571.6 kJ/mole.
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The given chemical reaction is,
Now we have to determine the value of for the following reaction i.e,
According to the Hess’s law, if we reverse the reaction then the sign of change.
So, the value for the reaction will be:
Hence, the value of for the reaction is +571.6 kJ/mole.