Answer:20
Explanation:because you have to devide
Answer:
(D)
Step-by-step explanation:
Two principles:
- The steps in a mechanism are elementary reactions, so the exponents in the rate laws are the coefficients in the steps.
- No reaction can go faster than its slowest step.
(D) R₂ ⟶ 2R (slow); rate = k[R₂]
(A) is <em>wrong</em>. rate = k[Q][R₂]. Reaction is 1st order in Q.
(B) is <em>wrong</em>. rate = k[Q]². Reaction is 2nd order in Q.
(C) is <em>wrong</em>. rate = k[Q][Z]. Reaction is 1st order in Q and 1st order in Z.
Answer:
x = 2+
Explanation:
1) FADH2 + Q => FAD + QH2
Since H is added to Q
=> Reactant reduced is Q
(2) Balancing charges on both sides of the equation gives:
QH2 + 2 cyt c(Fe3+) => Q + 2 cyt c(Fe2+) + 2 H+
Thus x = 2+
Answer:
The diluted solution is 0.65 M
Explanation:
Dilution formula to solve the problem is:
M concentrated . V concentrated = M Diluted . V diluted
We can also make a rule of three though.
In 1000 mL of concentrated solution, we have 13.1 moles of HNO₃
So in 25 mL we have (25 . 13.1 ) / 1000 = 0.327 moles of HNO₃
This moles are also in 0.500 L of diluted solution, the new molarity will be:
0.327 mol / 0.5L = 0.65 M
Molarity of diluted solution must be always lower than concentrated solution, otherwise the excersise is wrong.
If we replace in the formula
13.1 M . 25 mL = 500 mL . M diluted
M diluted = 13.1 m . 25 mL / 500 mL = 0.65 M
How does the picture show that the inner core spins faster than the outer core?