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Stells [14]
3 years ago
15

The reaction 2NO2(g)+F2(g)-->2NO2F(g) has an overall second order rate law, rate=k[NO2][F2]. Suggest a mechanism consistent w

ith this rate law, being sure to label steps as fast and slow. (Hint: It is easiest to assume the first step is slow.)
Chemistry
1 answer:
borishaifa [10]3 years ago
3 0
<span>The reason why it is easiest to assume the first step is slow is because that would be your rate determining step and would give you the rate law given in the problem. So you take the two compounds from the rate law given and put them as your two reactants in your first step: NO2 + F2 ---> NO2F + F (all gases) Your next step needs to make sense for your overall reaction. And you also need to have an intermediate which in this case will be F: F + NO2 ---> NO2F (again all gases) This is the fast step. Your intermediate cancels out to give you your overall equation: 2NO2 + F2 ---> 2NO2F (all gases)</span>
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How many atoms are in 12 moles of I. Check your significant figures.
ELEN [110]

Explanation:

7.2×1024 moleas

please mark as brilliant

5 0
2 years ago
The following is an example of what type of chemical reaction?
Svetlanka [38]
This is a D. combustion reaction

That is because you add O2 which is necessary for a combustion, while the results are CO2 and water. What you are missing is a ---> after the 2O2 (g)
4 0
3 years ago
What is the nuclear binding energy of an atom that has a mass defect of 5.0446
notsponge [240]

Answer:

<em>Option C: 4.54 x </em>10^{11}<em> KJ/mol of nuclei</em>

<em>Note: </em>Here in this question option C is not correctly put. It is 4.54 x10^{11} rather than 4.54 x 10^{-123}.

Explanation:

If mass defect is known, then nuclear binding energy can easily be calculated, here's how:

First step is to convert that mass defect into kg.

Mass defect = 5.0446 amu

Mass defect = 5.0466 x 1.6606 x 10^{-27}

Because 1 amu = 1.6606 x 10^{-27} Kg.

<em>Mass defect = 8.383 x </em>10^{-27}<em> kg.</em>

Now, we need to find out it's energy equivalent by using following equation:

Using the equation E = mc²:

where c= 3.00 x 10^{8} m/s²

E = (8.383 x 10^{-27}) x (3.00 x 10^{8})²

E = 7.54 x 10^{-10} J  this energy is in Joules but nuclear binding energy is usually expressed in KJ/mol of nuclei. Let's convert it:

(7.54 x 10^{-10} Joule/nucleus)x(1 kJ/1000 Joule)x(6.022 x 10^{23} nuclei/mol) =  

<em>4.54 x </em>10^{11}<em> kJ/mol of nuclei .</em>

E = <em>4.54 x </em>10^{11}<em> kJ/mol of nuclei .</em> So, this is the nuclear binding energy of that atom, which is option  C.

<em>Note:</em> Here in this question option C is not correctly put. It is 4.54 x10^{11} rather than 4.54 x 10^{-123}

4 0
3 years ago
Read 2 more answers
Which substance can be decomposed by chemical means
jolli1 [7]

Answer:

the answer is Compounds

Explanation:

Compounds are pure substances formed by the combination of elements; they can be decomposed by ordinary chemical means.

5 0
3 years ago
How many moles of chlorine are in 6.67x10^40 chlorine molecules?
sweet-ann [11.9K]
To solve for the number of moles, we simply have to use the Avogadros number which states that there are 6.022 x 10^23 molecules per mole. Therefore:
 
number of moles = 6.67 X 10^40 chlorine molecules / (6.022 x 10^23 molecules / mole)
number of moles = 1.108 x 10^17 moles



4 0
3 years ago
Read 2 more answers
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