Answer: Density is defined as the ratio between mass and volume or mass per unit volume.
Explanation:
Atomic mass <span>of zinc ( zn ) is 65 u
Answer B</span>
i believe its true bc ik for sure air is a homogenous mixture
Answer:
Kp = 0.022
Explanation:
<em>Full question: ...With 2.3 atm of ammonia gas at 32. °C. He then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of hydrogen gas to be 0.69 atm. </em>
<em />
The equilibrium of ammonia occurs as follows:
2NH₃(g) ⇄ N₂(g) + 3H₂(g)
Where Kp is defined as:
![Kp = \frac{P_{N_2}P_{H_2}^3}{P_{NH_3}^2}](https://tex.z-dn.net/?f=Kp%20%3D%20%5Cfrac%7BP_%7BN_2%7DP_%7BH_2%7D%5E3%7D%7BP_%7BNH_3%7D%5E2%7D)
<em>Where P represents partial pressure of each gas.</em>
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As initial pressure of ammonia is 2.3atm, its equilibrium concentration will be:
P(NH₃) = 2.3atm - 2X
<em>Where X represents reaction coordinate</em>
<em />
Thus, pressure of hydrogen and nitrogen is:
P(N₂) = X
P(H₂) = 3X.
As partial pressure of hydrogen is 0.69atm:
3X = 0.69
X = 0.23atm:
P(NH₃) = 2.3atm - 2(0.23atm) = 1.84atm
P(N₂) = 0.23atm
P(H₂) = 0.69atm
![Kp = \frac{0.23atm*0.69atm^3}{1.84atm^2}](https://tex.z-dn.net/?f=Kp%20%3D%20%5Cfrac%7B0.23atm%2A0.69atm%5E3%7D%7B1.84atm%5E2%7D)
<h3>Kp = 0.022</h3>
Answer:
554.86kj
Explanation: Since 1 mole of CaC2=15.14kj yield 1mole of C2H2
The enthalpy change of H2O is 2*285=570
570+-15.14=554.86kj
Hence Hp is 554.86kj
He=Hp