8.3 × 106 - trust me, it's actually right. You can use the calculator to see if I'm correct. Punch in <span>8.3 × 106 = 6.6</span>
The standard entropy for the substances are as follows:
C6H12O2(s) = -212
<span>O2(g) = -205 </span>
<span>CO2(g) = -214 </span>
<span>H2O(l) = -70
</span>
We calculate the ∆S°r<span>eaction by the expression:
</span>∆S°rxn = ∆S°products - ∆S° reactants
∆S°rxn = (212+6x205)-(6x214+6x70)
∆S°rxn = -262 J/K ------> OPTION 3
Answer:
11690J
Explanation:
Use formula Q = mL
where:
Q = Energy (J)
m = Mass (g)
L = Latent heat of fusion for water (J/g) = 344J/g
Therefore:
Q = 35.0 x 344
Q = 11690J
Explanation:
If we change the concentration of Potassium since we take KI solution, concentration of I- changes, then the rate changes accordingly
Rate = k[H2O2 ]^a[I-]^b [H+]^c
The concentrations of I- and H+ are held constant in the procedure
thus to study the rate of the reaction, concentration of KI solution has to be constant only the peroxide solution varies.
Charles law states a proportional relationship between volume and temperature.
V1= 100mL=0.1L
V2=400mL=0.4L
T1=80'c+273=353K
T2=?
T2=1412K-273=1139'C
