C3H8 + 5O2 -> 3CO2 + 4H2OAccording to this equation, which ratio of oxygen to propane is correct?
1- 5 grams O2 / 1 gram C3H8
2- 5 moles O2 / 1 mole C3H8
3- 10 grams O2 / 11 grams C3H8
4- 10 moles O2 / 11 moles C3H8
Answers
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5 moles oxygen / 1 mole propane. The correct option is option C among all the given options.
What is mole?
The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
The balanced equation for the given chemical reaction can be given as
CH
+ 5O
3CO
+ 4H
O
Stoichiometry represents the number of number of moles of reactant and products. The mole ratio between oxygen and propane is 5:1. the correct option isoption 2.
Therefore, 5 moles oxygen / 1 mole propane. The correct option is option C among all the given options.
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Pollution
Particulate matter
Ozone
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Answer:
the answer is Particulate matter
Explanation:
B. emigration.
C. population shift.
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0.70 g/mL = 70.0 g / V
V = 70.0 / 0.70
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hope this helps!
Answers
Initial concentrations [Ag+]= [Fe2+]= 1.0 mol/ dm^3 [Fe3+] =0.0 mol/dm^3
change: Ag+: (1.0 - .44) mol/dm^3 = 0.56 mol/ dm^3 = change of Fe2+. Change of Fe3+ is 0.56 mol/dm^3.
Equilibrium concentrations [Ag+] = [Fe2+] = 0.44 mol/dm^3 [Fe3+] = 0.56 mol/dm^3
Kc = 0.56/0.44^2 dm^3/mol = 2.89 dm^3 /mol
Final answer:
The equilibrium constant Kc for the given reaction is calculated as [Fe3+]/[Ag+][ Fe2+] = 1.76, which is not among the provided answer choices.
Explanation:
To calculate the equilibrium constant, Kc, for the reaction Ag + (aq) + Fe2+ (aq) <==> Ag(s) + Fe3+ (aq), you need to know the concentrations of the ions at equilibrium. According to the question, the concentration of Ag+ is 0.44 mol/1.00 dm^3. Because AgNO3 completely dissociates into Ag+ and NO3- ions, the initial concentration of Fe2+ would also be 1.00 mol/dm^3. Given that the reaction has gone to completion, the concentration of Fe2+ at equilibrium would be 0.56 mol/dm^3 (1.00 - 0.44).
Furthermore, the reaction creates an equivalent amount of Fe3+, so its concentration at equilibrium would also be 0.44 mol/dm^3. Therefore, the equilibrium constant, Kc, is calculated as [Fe3+]/[Ag+][ Fe2+] = (0.44)/(0.44 * 0.56) = 1.76. Looking at the answer choices given, none of them matches with the calculated value. So, the correct value might be an option not mentioned here.
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Answers
B) generating outcomes based on some model of how they are really produced
C) comparing the outcomes of two different treatment protocols
D) recording the high and low temperature at a particular location every day
Answers
Answer: D) recording the high and low temperature at a particular location every day.
Explanation:
A experiment is a process which is conducted or performed to either support, refute or validate the hypothesis. It involves the detail repeatable procedure and the logical analysis of the outcomes of the results. It involves different variables which are compared to obtain the outcome of the experiment. For example the amount of water used everyday responsible for the plant height.
Among the options given, D) recording the high and low temperature at a particular location every day. is the correct option, temperature is a variable in the experiment. The change in the daily temperature of a location can be noted as observation of the experiment. This observation can be used to record the average temperature of the location.