<span>If the decomposition of H2O2 is first order, then
rate=k*[H2O2], and k=rate/[H2O2]
In this case k=(4.83 x 10-6 M/s)/(0.15 M)
k=3.22 x 10-5 s^-1</span>
Answer:
- Look up the specific heat capacity of AlF₃
- Calculate ΔT
- Calculate the mass of AlF₃
Explanation:
The formula for for the heat (q) absorbed by an object is
q = mCΔT, where
m = the mass of the sample
C = the specific heat capacity of the sample. and
ΔT = the change in temperature
1. What you must do
- Look up the specific heat capacity of AlF₃
- Calculate ΔT
- Calculate the mass of AlF₃
2. Sample calculation
For this example, I assume that the specific heat capacity of AlF₃ is 1.16 J·K⁻¹mol⁻¹
.
(a) Calculate ΔT
(b) Calculate m
Answer:
The time taken for the cross to disappear decreases as we move down the table
Explanation:
We have to take note of three important things we can see in the table.
1) the volume of HCl was held constant
2) the volume of the thiosulphate solution was increased steadily down the table
3) the volume of water was decreased steadily down the table.
We know that the rate of reaction increases with increase in the the concentration of reactants. The more the volume of reactants compared to the volume of the volume of water present, the higher the concentration of reactants and the faster the rate of reaction. This implies that it takes a shorter time for the reaction to get to completion.
As we increase the volume of thiosulphate and decrease the volume of water, we are manipulating the reactant concentration. In this case, concentration is being increased. Hence the reaction proceeds faster and it takes a shorter time for the cross to disappear. Hence the time taken for the cross to disappear will decreased steadily down the table.
Answer:
Noble gases b/c its melts quicly that why enjoy
Answer:
456g
Explanation:
that's the answer for the question