Answer:
Explanation:
Hello,
In this case, since the law of conservation of mass allows us to notice that the mass of carbon in the burned compound is also present in the resulting carbon dioxide, we can compute such moles as shown below:
Next, hydrogen in the sample is present at the products in the water only, and in one mole of water, two moles of hydrogen are present, thereby:
Nevertheless, the amount of oxygen in the sample must be computed by subtracting both the mass of carbon and hydrogen from the previously computed moles:
And the moles:
Next, we compute the mole ratios with respect to the element having the smallest number of moles (oxygen) to obtain the subscripts in the empirical formula:
Then, we have:
Finally, by multiplying by two, we obtain the smallest whole subscripts:
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Answer:
The number of protons and electrons are equal.
Explanation:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.
Cosmology is the study of the grand scale of the universe. You need astronomical observation because then there would be no proof to cosmological theory.
Answer:
r = k × [A] × [B]
Explanation:
To determine the rate law, we simply use the slow step reaction equation. The slow step is the rate determining step in the reaction.
A+B→AB
And as we know, the rate of the reaction is proportional directly to the product of the concentration of the reactants which concentration is changing over the course of the reaction.
r = k × [A] × [B]
Where r = rate of reaction
k = reaction rate constant
[A] = Concentration of molecule A
[B] = Concentration of molecule B
C7H16, where C=12.01, and H=1.01, so the weight of the molecule would be 7(12.01)+16(1.01), or 100.23. The percentage of carbon would be found by ((7*12.01)/100.23)*100=83.88% Carbon
((16*1.01)/100.23)*100=16.12% Hydrogen
