Answer:
The answer to your question is P2 = 342 kPa
Explanation:
Data
Pressure 1 = P1 = 155 kPa
Volume 1 = V1 = 22 l
Pressure 2 = P2 = ?
Volume 2 = V2 = 10 l
Temperature = constant
Process
1.- Write the equation of the combined gas law
P1V1/T1 = P2V2/ T2
Cancel T1 and T2 because they measure the same
P1V1 = P2V2
-Solve for P2
P2 = P1V1/V2
2.- Substitution
P2 = (155 x 22) / 10
3.- Simplification
P2 = 3410 / 10
4.- Result
P2 = 342 kPa
B. Increase the volume (in other words, decrease the pressure).
A is wrong because as temperature decreases, the reaction will shift to the left as the system is endothermic (positive delta H).
C. is wrong because as O2 gas is added, the reaction will shift to the left in order to relieve the stress on the system.
D. is wrong because a catalyst will increase the rate of the reaction by decreasing the activation energy. It doesn't affect equilibrium.
B is correct because the left side has two moles of gas while the right side has three moles of gas. Thus, when pressure is decreased (volume is increased--they are inversely related), the system will shift in the direction with more moles of gas.
Answer:
Explanation:
Hello,
In this case, for the reaction:
We first must assign the oxidation state of each element:
Thus, we should remember that the oxidation half-reaction applies for the element undergoing an increase in its oxidation state, such case is sulfur, for which passes from 0 to +4 as shown below:
It means, that four electrons were lost due to the effect of the strong oxidizing agent, potassium dichromate.
Best regards.
Answer:
983.84 g
Explanation:
The following data were obtained from the question:
Density (D) = 1.04 g/mL
Volume (V) = 1 quart = 946 mL
Mass(m) =?
The density of a substance is simply defined as the mass of the substance per unit volume of substance. mathematically, it can be expressed as:
Density (D) = mass (m) /volume (V)
D = m/V
With the above formula, we can obtain the mass of 1 quart of milk as follow:
Density (D) = 1.04 g/mL
Volume (V) = 1 quart = 946 mL
Mass (m) =?
D = m/V
1.04 = m/946
Cross multiply
m = 1.04 × 946
m = 983.84 g
Therefore, the mass of 1 quart of milk is 983.84 g
