Answer:
A
Explanation:
How many moles of HCI will just react with 0.424 g Ba(OH)2?
A) 4.94 x 10 mol
Missing information:
Equilibrium reaction: NH2COONH4(s)⇌2NH3(g)+CO2(g)
Answer:
14.43 atm
Explanation:
The equilibrium occurs when in a reversible reaction, the velocity of the formation of the products is equal to the velocity of the formation of the reactants. When this occurs, the concentration and partial pressures remain constant. To characterize the equilibrium there's the equilibrium constant, which can be based on the concentration (Kc) or based on the gases partial pressure (Kp).
The conversion between them is:
Kp = Kc*(RT)⁻ⁿ
Where n is the variation of the coefficients of the gas substances (reactants - products) so, n = 0 - (2+1) = -3
Kp = Kc*(RT)³
R is the gas constant (0.082 atm.L/mol.K), and T is the temperature ( 240°C = 513 K), so:
Kp = 0.006*(0.082*513)³
Kp = 446.6
The value of Kp is also the ratio between the multiplication of the partial pressures of the products divided by the partial pressure of the reactants, each one elevated by the coefficient of the substance, and only for gas substances, so:
Kp = (pNH3)²*(pCO2)
Doing an equilibrium chart
NH3 CO2
0 0 Intial
+2x x Reacts (stoichiometry is 2:1)
2x x Equilibrium
446.6 = (2x)²*x
4x³ = 446.6
x³ = 111.65
x = ∛111.65
x = 4.81 atm
pNH3 = 2*4.81 = 9.62 atm
pCO2 = 4.81 atm
By Dalton's law, the total pressure of a gas mixture is the sum of the partial pressure of the substances:
P = 9.62 + 4.81 = 14.43 atm
17. not sure
18. not sure
19. movement of rock from one place to another
20. deposition
21. Urbanization
22. sedimentary
23. ease of traffic movement
24. absolute dating
25. fracture
26. increased farm land producing food for people
Answer: 101 moles of oxygen are contained in the tank
Explanation:
According to ideal gas equation:
P = pressure of gas = 204.047 atm
V = Volume of gas = 12.0 L
n = number of moles = ?
R = gas constant =
T =temperature =
Thus 101 moles of oxygen are contained in the tank
D NACL because it is ionic bond and all the others are covalent
