Answer:
what is this I am not getting which type of this question you have taken from where
...if you use magnetso this is a mixture
p/s: or this is physical process
sorry if I'm wrong
I’m not sure what the options are, but something along the lines of, without deforestation, we wouldn’t be able to build cities, or settlements, which would halt our advancements in architecture.
If this doesn’t really help, just show me the options and we’ll figure it out :)
10 moles because for every one mile of oxygen, O2 , you produce 2 miles of water , H20 and therefore if you have 5 moles of oxygen.. you produce moles of water
Answer:
(a) -0.00017 M/s;
(b) 0.00034 M/s
Explanation:
(a) Rate of a reaction is defined as change in molarity in a unit time, that is:
Given the following reaction:
We may write the rate expression in terms of reactants firstly. Since reactants are decreasing in molarity, we're adding a negative sign. Similarly, if we wish to look at the overall reaction rate, we need to divide by stoichiometric coefficients:
Reaction rate is also equal to the rate of formation of products divided by their coefficients:
Let's find the rate of disappearance of the reactant firstly. This would be found dividing the change in molarity by the change in time:
(b) Using the relationship derived previously, we know that:
Rate of appearance of nitrogen dioxide is given by:
Which is obtained from the equation:
If we multiply both sides by 4, that is:
This yields:
[tex]r_{NO_2} = \frac{\Delta [NO_2]}{\Delta t} = -2\frac{\Delta [N_2O_5]}{ \Delta t} = -2\cdot (-0.00017 M/s) = 0.00034 M/s[tex]