Answers
The empirical formula of the oxygenated hydrocarbon is CH2O.
To find the empirical formula of the oxygenated hydrocarbonWe need to determine the mole ratios of the elements present in the compound using the given masses and the molar masses of the elements.
First, we need to find the moles of carbon dioxide and water vapor produced in the reaction:
moles of CO2 = 1.76 g / 44.01 g/mol = 0.0400 mol CO2
moles of H2O = 1.08 g / 18.02 g/mol = 0.0599 mol H2O
Next, we need to find the moles of carbon and hydrogen in the compound. We can do this by using the masses of carbon dioxide and water vapor produced, the molar masses of the elements, and the balanced chemical equation for the combustion of hydrocarbons:
CxHyOz + (x + y/4 - z/2) O2 -> x CO2 + (y/2) H2O
From the balanced equation, we can see that the mole ratio of carbon to carbon dioxide is 1:1, and the mole ratio of hydrogen to water vapor is (1/2):(1/2) or 1:1. Therefore:
moles of C = moles of CO2 = 0.0400 mol CO2
moles of H = 2 × moles of H2O = 0.1198 mol H2O
Finally, we can find the mole ratio of carbon to hydrogen in the compound:
mol ratio of C to H = (moles of C) / (moles of H) = 0.0400 mol CO2 / 0.1198 mol H2O ≈ 0.334
To get whole numbers for the mole ratio, we can multiply both sides by a common factor, such as 3:
mol ratio of C to H ≈ 0.334 ≈ 1/3
mol ratio of C to H = 1
mol ratio of O to H = (moles of O) / (moles of H) = (moles of CxHyOz - moles of C - moles of H) / (moles of H) = (0.0400 mol CO2 + 0.0599 mol H2O - 0.0400 mol C - 0.1198 mol H) / 0.1198 mol H = 0.213
To get whole numbers for the mole ratio, we can multiply both sides by a common factor, such as 5:
mol ratio of O to H ≈ 0.213 ≈ 2/9
mol ratio of O to H = 2
Therefore, the empirical formula of the oxygenated hydrocarbon is CH2O.
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Related Questions
7. What are the coefficients that will balance the skeleton equation below?
N₂ + H₂ → NH3
a.1,1,2
b.3,1,3,1
c.1,1,1,3
d.1,3,3,1
When the equation Fe + Cl₂ → FeCl, is balanced, what is the coefficient
Answers
Answer:
N₂ + 3H₂ → 2NH3
4Fe + 2Cl₂ → 4FeCl
Explanation:
This equations are now balanced
pls rate as brainliest
CAN SOMEONE PLEASE HELP ME I WILL MARK AS BRAINLIEST :(
Answers
Answer:
ok so i did the problem and the answer was 8e+29
Explanation:
i dont really know what the answer is but thats the answer i got
sorry if this didnt help
Organic Molecules worksheet
Answers
Answer:
ok
Explanation:
1. All of the following energy resources are fossil fuels except
a. oil.
b. coal.
C. biomass.
d. natural gas.
Answers
If 15.5 mL of 0.225 M aqueous magnesium chloride is added to 37.5 mL of 0.250 M aqueous lead(II) nitrate, then what mass of lead(II) chloride precipitates
Answers
Answer:
0.973 g of PbCl2
Explanation:
MgCl2(aq) + Pb(NO3)2(aq) -----> PbCl2(s) + Mg(NO3)2(aq)
From the information provided
amount of MgCl2 reacted;
15.5/1000 * 0.225 = 0.0035 moles
If 1 mole of MgCl2 yields 1 mole of PbCl2
0.0035 moles of MgCl2 yields 0.0035 moles of PbCl2
For lead nitrate
Amount reacted = 37.5/1000 * 0.250 = 0.0094 moles
If 1 mole of lead nitrate yields 1 mole of lead chloride
0.0094 moles of lead nitrate yields 0.0094 moles of lead chloride
Since MgCl2 is the limiting reactant (it yields the least amount of product)
Then mass of lead chloride produced = 0.0035 moles of PbCl2 * 278.1 g/mol = 0.973 g of PbCl2
How many grams of Cl2 are required to react with 19.5 g of Al?
2AI (s) + 3Cl2 (g) → Al₂Cl6
76.9 g
86.6 g
57.3 g
38.5 g
14.2 g
Answers
The correct answer is 76.9 g of \(Cl_{2}\) is required to react with 19.5 g of \(Al\). Therefore, the correct option is: 76.9 g.
What is Atomic Mass?
Atomic mass, also known as atomic weight or relative atomic mass, is a measure of the mass of an atom of a chemical element. It is expressed in atomic mass units (amu) or unified atomic mass units (u). Atomic mass is a weighted average mass of the naturally occurring isotopes of an element, taking into account their relative abundances.
The balanced chemical equation for the reaction is:
\(2Al\) (s) + 3\(Cl_{2}\) (g) → \(Al_{2}\)\(Cl_{6}\)
From the equation, we can see that the molar ratio between \(Al\)and Cl2 is 2:3. This means that 2 moles of \(Al\) react with 3 moles of \(Cl_{2}\)
To find out how many grams of \(Cl_{2}\) are required to react with 19.5 g of \(Al\) we need to convert the given mass of \(Al\) to moles using its molar mass, and then use the mole ratio from the balanced equation to calculate the amount of \(Cl_{2}\).
The molar mass of \(Al\) is 27 g/mol, and the molar mass of \(Cl_{2}\) is 2 * 35.45 g/mol = 70.9 g/mol.
Moles of \(Al\)= Mass of \(Al\)/ Molar mass of\(Al\)
Moles of \(Al\) = 19.5 g / 27 g/mol ≈ 0.722 mol
According to the mole ratio from the balanced equation, 2 moles of \(Al\)react with 3 moles of \(Cl_{2} .\)
Moles of \(Cl_{2}\)= Moles of \(Al\) * (3 moles of \(Cl_{2}\) / 2 moles of \(Al\))
Moles of \(Cl_{2}\) = 0.722 mol * (3/2) ≈ 1.083 mol
Now, we can convert moles of \(Cl_{2}\) to grams using its molar mass.
Mass of\(Cl_{2}\) = Moles of \(Cl_{2}\) * Molar mass of \(Cl_{2}\)
Mass of\(Cl_{2}\) = 1.083 mol * 70.9 g/mol ≈ 76.9 g
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How many moles of aluminum ions al3+ are present in 0.42 mol of al2so43
Answers
There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.
The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.
Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:
Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)
Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2
Moles of Al3+ = 0.84 mol Al3+
Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.
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Lewis structure AgBr2
Answers
Answer:
Br-Ag-Br
Explanation:
(c) In addition to the number of moles of CuSO4 calculated in part (b), what other quantity must be measured in order to calculate the mass percentage of CuSO4 in the impure sample of CuSO4(s)?
Answers
(b) This question is incomplete. To determine how many moles of CuSO4 are present in the impure sample, however. The following formula may be applied
moles = mass of CuSO₄ in impure sample ÷ molar mass of CuSO₄
(c) This question is also incomplete. , to calculate the mass percentage of CuSO₄ present in the impure sample of CuSO₄, the formulato be used is :
Mass percentage of CuSO₄ =mass of CuSO₄ present in the impure sample divide by mass of impure CuSO₄ × 100
Since the actual mass of the CuSO4 contained in the impure sample had to be determined before determining the number of moles, the mass of the impure sample must also be measured.
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Express the number 4.80x10-1 in standard form
Answers
Until a train is a safe distance from the station it must travel at 5 m/s Once the train is on open track it can speed up
to 45 mls. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? (Round your answer to
the nearest whole number)
4 m/s2
5 m/s2
6 m/s2
7 m's?
Answers
Answer:
5 m/s²
Explanation:
From the question given above, it took 8 s for the train to get to a speed of 45 m/s. This simply means the train was maintaining 5 m/s as it travels in order to get to an open track.
Thus, we obtained the following data from the question.
Initial velocity (u) = 5 m/s
Final velocity (v) = 45 m/s
Time (t) = 8 s
Acceleration (a) =.?
Acceleration is simply defined as the rate of change of velocity with time. Mathematically, it can be expressed as:
a = (v – u) /t
Where:
a is the acceleration.
v is the final velocity.
u is the initial velocity.
t is the time.
With the above formula, we can obtain the velocity of the train as follow:
Initial velocity (u) = 5 m/s
Final velocity (v) = 45 m/s
Time (t) = 8 s
Acceleration (a) =.?
a = (v – u) /t
a = (45 – 5) / 8
a = 40/8
a = 5 m/s²
Therefore, the acceleration of the train is 5 m/s².
Answer:
Its B =)
Explanation:
What is the correct equilibrium constant expression for the following reaction? 3A2 = 2B3 when the reaction started with the initial concentrations of A2 = 3 M and B3 = 2 M and continued until the equilibrium concentrations of A2 = 2.5 M and B3 = 2.5 M
Answers
Answer:
Kc = [B₃]²/[A₂]³ = 0.40
Explanation:
3A₂ ⇄ 2B₃
Given at equilibrium => [A₂] =2.5 and [B₃] = 2.5
Kc = [B₃]²/[A₂]³ = (2.5)²/(2.5)³ = (2.5)⁻¹ = 0.40
2. Label the different layers of the atmosphere and the separating boundaries between each layer.
Answers
The layers of the atmosphere with the boundaries that are between them are shown in the image attached here.
Layers of the atmosphereThe troposphere, which rises up to an altitude of roughly 10-15 km, is the layer that is closest to the Earth's surface. The majority of the Earth's air mass is contained here, which is also where weather happens.
The tropopause marks the transition from the troposphere to the stratosphere, the next layer. It designates the altitude at which the temperature stops dropping.
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How many grams of CO2 are used when 6.0 g of O2 are produced? Express your answer with the appropriate units.
Answers
Answer:
that is why co2 is in the power of 2ik
prop-1-yne + 2HBr/H2O2 = A;
A + 2H2O = B;
B + K2CO3(aq) = C;
C + heat = D;
D + HBr = E.
find the compounds A, B, C, D and E
Answers
Based on the given reactions, the compounds are as follows:
A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.
B: The product formed when compound A reacts with 2H2O.
C: The product formed when compound B reacts with K2CO3(aq).
D: The product formed from the heat-induced reaction of compound C.
E: The product formed when compound D reacts with HBr.
Based on the given reactions, let's analyze the compounds involved:
Reaction 1: prop-1-yne + 2HBr/H2O2 = A
The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.
Reaction 2: A + 2H2O = B
Compound A reacts with 2H2O (water) to form compound B.
Reaction 3: B + K2CO3(aq) = C
Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.
Reaction 4: C + heat = D
Compound C undergoes a heat-induced reaction to form compound D.
Reaction 5: D + HBr = E
Compound D reacts with HBr (hydrobromic acid) to form compound E.
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If Brian and his scooter had a mass of 50 kg, how much force would it take for him to accelerate at 0.8 m/s2
Answers
Answer:
The answer is 40 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question
mass = 50 kg
acceleration = 0.8 m/s²
We have
Force = 50 × 0.8
We have the final answer as
40 NHope this helps you
The actual density of pennies made before 1982 is about 8.8 g/mL. The actual density of pennies made after 1982 is about 7.2 g/mL. Compare your results with these accepted values. What could you have done differently to obtain results closer to the accepted values?
Answers
To obtain more accurate values of the densities of the pennies:
more trials can be conducted to reduces the effect of measurement errorsmore care should be taken in taken volume measurements by displacement of water to avoid splashing of water.What is density of a substance?The density of a substance is the ratio of the mass of the substance to the volume of that substance.
It is a measure of the compactness of the matter in a substance.
The densities of the pennies made before 1982 was 8.7 g/ml
The actual density of pennies made before 1982 is about 8.8 g/mL.
The densities of the pennies made after 1982 was 6.9 g/ml
The actual density of pennies made after 1982 is about 7.2 g/mL.
Due to several random and experimental errors, the values obtained from the experiment are not exactly the same with the accepted values.
To obtain more accurate values:
more trials can be conducted to reduces the effect of measurement errorsmore care should be taken in taken volume measurements by displacement of water to avoid splashing of water.In conclusion, the densities varied as as a result of random and experimental errors.
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Answer:
Prior to 1982, the densities of pennies were 8.7 g/ml.
The density of pre-1982 pennies is approximately 8.8 g/mL.
The densities of pennies produced after 1982 were 6.9 g/ml.
The density of pennies made after 1982 is approximately 7.2 g/mL.
The values obtained from the experiment do not exactly match the accepted values due to several random and experimental errors.
Explanation:
Check the box of the group that the compound is more likely to be part of??
Answers
If one of the elements is a metal and the other is a nonmetal, they will most likely form an ionic bond. Monatomic cations and anions make up these kinds of ionic compounds.
What increases an element's likelihood of bonding?The reactivity of an atom—or propensity to establish chemical interactions with other atoms—depends on the amount of electrons in its outermost shell.
Which elements are compounds, and how do you know?The number of protons in a particular atom, which is an element's smallest building block, is how an element is defined. A compound, on the other hand, is made up of different atoms, and the smallest component of a compound is a molecule.
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The elaboration likelihood model emphasizes the use of __________ persuasion and __________ persuasion methods. A. direct . . . elaborative B. peripheral . . . elaborative C. direct . . . peripheral D. indirect . . . direct Please select the best answer from the choices provided A B C D
Answers
Answer:
It's C, direct and peripheral.
Explanation:
Just took the test
The elaboration likelihood model emphasizes the use of direct persuasion
and peripheral persuasion methods.
This theory involves a dual process which explains how attitudes are
changed in individuals through persuasion. The two methods of persuasion
include:
Direct persuasionPeripheral persuasionThese methods help in the formation of attitude which makes option C the
most appropriate choice.
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Consider the following reaction: 2N2O5(g) → 4NO2(g) + O2(g) Calculate the volume N2O5 that must decompose completely to produce 9.64 L nitrogen dioxide.
Answers
The volume of \(N_2O_5\) needed to produce 9.64 L of \(NO_2\) is 4.97 L, calculated using stoichiometry and the ideal gas equation.
The given chemical equation is \(2N_2O_5(g) \rightarrow 4NO_2(g) + O_2(g)\) .The volume of \(N_2O_5\) that decomposes completely to form 9.64 L of \(NO_2\) is to be calculated. For this, we can use the concept of stoichiometry. Stoichiometry is a branch of chemistry that deals with the quantitative relationships between reactants and products in a balanced chemical equation.To calculate the volume of \(N_2O_5\) that is needed to produce 9.64 L of \(NO_2\), we will first determine the number of moles of NO2 produced in the reaction. For this, we can use the ideal gas equation, PV = nRT. Here, we have the volume of NO2 and we can assume the pressure and temperature to be constant. Thus, we have PV = nRT, where P = pressure, V = volume, n = number of moles, R = ideal gas constant, and T = temperature. Substituting the given values in the ideal gas equation, we get,n = PV/RT = (1 atm × 9.64 L)/(0.0821 L atm K-1 mol-1 × 300 K) = 0.404 molFrom the chemical equation, we see that 2 moles of \(N_2O_5\) give 4 moles of \(NO_2\). Thus, 0.404 mol of \(NO_2\) must have been produced from (0.404/2) = 0.202 mol of \(N_2O_5\). Using the ideal gas equation, we can also find the volume of 0.202 mol of \(N_2O_5\) at the given conditions. Thus, V = nRT/P = (0.202 mol × 0.0821 L atm K-1 mol-1 × 300 K)/1 atm = 4.97 L. Thus, the volume of \(N_2O_5\) that must decompose completely to produce 9.64 L nitrogen dioxide is 4.97 L.For more questions on stoichiometry
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HELPPP PLEASEEEEE!!!!!!!
Answers
The evidence in figure 2 and table 1 which describes the changes in the rock after a year is the presence of a round edge.
What is Weathering?This is referred to as the breaking down or dissolving of rocks and minerals on Earths surface through elements such as wind, water etc.
In the diagram given, the rock previously had a sharp edge but as time went on there was breakdown of the edges which resulted in it becoming round and is therefore the evidence that weathering most likely occurred in the rock.
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What substance is oxidized in the following reaction? 4HCl + MnO2 → Cl2 + 2H2O + MnCl2
Answers
Answer:
Cl⁻ was oxidized.
Explanation:
4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂Oxidation can be defined as the process in which the oxidation number of a substance increases.
On the left side of the equation, Cl has a charge of -1 (in HCl); while on the right side of the equation Cl has a charge of 0 in Cl₂.
Thus, Cl⁻ was oxidized.
what is the effect of heat and light on chemical reaction
Answers
Question 2 of 10
What is the purpose of the flame that is lit below a hot air balloon?
A. To increase enthalpy
B. To increase reduction
C. To decrease enthalpy
O D. To decrease specific impulse
Answers
Answer:
A is correct answer for your question. A
Explanation:
A P E X
The purpose of the flame that is lit below a hot air balloon is to Increase Enthalpy. Hence, Option (A) is Correct.
What is Enthalpy ?
A thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume.
A hot air balloon uses a burner to heat up the air inside the balloon. The burner is usually fueled by liquid propane. The burner mixes the fuel with air and ignites the mixture, which creates a flame directly underneath the bottom opening of the hot air balloon.
Once the air inside the balloon begins to get warm, the balloon will rise. The pilot controls the balloon’s altitude by releasing hot air from a vent at the top of the balloon, releasing the warmer air causes the balloon to descend.
Therefore, The purpose of the flame that is lit below a hot air balloon is to Increase Enthalpy. Hence, Option (A) is Correct.
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When the volume of a closed container containing hydrogen gas is increased by a factor of two, how will this affect the number of hydrogen atoms in the container
Answers
We have that for the Question "When the volume of a closed container containing hydrogen gas is increased by a factor of two, how will this affect the number of hydrogen atoms in the container"
Answer:
Number of hydrogen atoms depend only on amount of gas which remains constant. Hence, increasing the volume of container has no affect on number of hydrogen atoms.Explanation:
The number of hydrogen atoms will remain the same in the container. Because the container is closed and amount of hydrogen gas remains constant, which means that no extra amount of hydrogen gas is removed or added from the container when volume increases.
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An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What is
its atomic number ?
Answers
Answer:
26
Explanation:
The atomic number of an atom describes the number of protons within its nucleus. Since the ion has 26 protons, the atomic number must be 26.
Which is the correct name for the covalent compound that
contains five oxygen atoms and two phosphorus atoms?
a Diphosphorus pentoxide
b Pentaoxygen diphosphide
C Phosphorus oxide
d Pentaoxygen diphosphorus
Answers
The correct name for the covalent compound that contains five oxygen atoms and two phosphorus atoms is Diphosphorus pentoxide.
The covalent compound has a combination of phosphorus and oxygen.
The oxygen atoms is 5 and the phosphorus atoms is 2.
Therefore, the combination can be represented chemically as follows:
P₂O₅The standard name for this compound is Diphosphorus pentoxide.
The prefix di simply means phosphorus is 2 atoms.
The pent indicates 5 atoms of oxygen.
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What type of weather typically results from a low pressure system?
I need help!!!!
Answers
Answer:
Storms and hurricanes can be formed with low pressure. It always results into unsettled weather.
Explanation:
Hope this helps!
SO4+BaCl2 double replacement
Answers
A double replacement is Na2SO4 (aq) + BaCl2 BaSO4 (s) + 2 NaCl (aq) + 2 NaCl (aq). The reaction Na2SO4 + BaCl2 is endothermic. When barium chloride (BaCl2) and sodium sulphate (Na2SO4) combine, sodium chloride and barium sulphate are formed.
What is the chemical formula for barium chloride's double replacement?When Sodium sulphate(Na 2 SO 4) interacts with Barium chloride solution (), a white precipitate of Barium sulphate() and Sodium chloride is generated.
When barium chloride is introduced to dilute sulphuric acid, a white precipitate of barium sulphate forms as a result of barium displacement from its chloride, as seen below: BaCl2 + H2SO4 BaSO4 + 2HCl.
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Ideal Gas Law: Tutorial. At a party, you use a gas canister to fill balloons. The canister holds 4.47 moles of air. If the room is at 26.0°C and the gas pressure is 855 kilopascals, what is the volume of the canister? The volume of the canister is ___ liters. Type the correct answer in the box. Express your answer to the correct number of significant figures. Use the gas laws Fact sheet to help you.
Answers
Answer:
13.0 L
Explanation:
To find the volume, you need to use the Ideal Gas Law:
PV = nRT
In this equation,
-----> P = pressure (kPa)
-----> V = volume (L)
-----> n = moles
-----> R = Ideal Gas constant (8.314 kPa*L/mol*K)
-----> T = temperature (K)
After converting the temperature from Celsius to Kelvin, you can plug the given values into the equation and simplify to find "V". The final answer should have 3 sig figs to match the sig figs of the given values.
P = 855 kPa R = 8.314 kPa*L/mol*K
V = ? L T = 26.0 °C + 273.15 = 299.15 K
n = 4.47 moles
PV = nRT
(855 kPa)V = (4.47 moles)(8.314 kPa*L/mol*K)(299.15 K)
(855 kPa)V = 11117.48496
V = 13.0 L