Answer: 3, 5
Explanation:
For this set, I just plugged in the values into -log(H+) and got a to be 3 and b to be 5
$114.3 billion (((((((((:
"There are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant."
Answer:
A: The amount of CaCO₃ decreases.
B: The amount of CaCO₃ increases.
Explanation:
To know how the system will proceed to reach equilibrium, we need to calculate the reaction quotient (Q) and compare it with the equilibrium constant (Kc).
Part A 15.0 g CaCO₃, 15.0 g CaO, and 4.25g CO₂
CaCO₃ and CaO are solids and they do not take part in Q nor Kc, so we will just calculate the concentration of CO₂.
Then,
Q = [CO₂] = 9.66 x 10⁻³
Q < Kc (0.0108), so the reaction will proceed to the right to achieve equilibrium, thus decreasing the amount of CaCO₃.
Part B 2.50 g CaCO₃, 25.0 g CaO, and 5.66g CO₂
Then,
Q = [CO₂] = 0.0129
Q > Kc, so the reaction will proceed to the left to achieve equilibrium, thus increasing the amount of CaCO₃.
Answer:
V2 = 57.67cm3
Explanation:
From the question
P1= 30.8, V1=205cm3, T1= 22+273=295K, P2=101.325kPa, T2= 273K, V2= ?
Applying
P1V1/T1= P2V2/T2
Substitute and simplify
(30.8*205)/295 = (101.325*V2)/273
V2= 57.67cm3