Methanol (CH4O) is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperatures and pressure.
CO(g) + 2H2(g) ---> CH4O(g)
1) How many molecules of hydrogen are needed to produce 25.O g of CH4O?
2) How many molecules of carbon monoxide are needed to produce 25.O g of CH4O?
3) How many molecules of hydrogen are needed to produce 50.0 g of CH4O?
Answers
1) 1.5625 moles of H2 are needed. 2) 0.78125 moles of CO are needed. 3) 1.5625 moles of H2 are needed to produce 50.0 g of CH4O.
Methanol is produced by reacting carbon monoxide and hydrogen at high temperatures and pressure according to the chemical equation CO(g) + 2H2(g) → CH4O(g). From the equation, we can see that two molecules of hydrogen are required for every one molecule of methanol. Therefore, we can find the number of moles of hydrogen required by dividing the number of moles of methanol by two.
To produce 25.0 g of methanol, we need 1.5625 moles of H2. Similarly, we can find the number of moles of CO required to produce methanol by dividing the number of moles of methanol by one, which yields 0.78125 moles of CO. To produce 50.0 g of methanol, we need 3.125 moles of H2 and 1.5625 moles of methanol.
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Related Questions
which type of chemical reaction must be predicted using solubility rules?
Answers
Solubility rules are used to predict the outcome of precipitation reactions, which involve the formation of insoluble products.
Solubility rules are guidelines that help predict the solubility of different compounds in water. These rules are based on the general principles of ionic interactions and the solubility of common ionic compounds. When two soluble compounds are mixed together, a precipitation reaction may occur if the resulting compound formed is insoluble in water.
In precipitation reactions, the reactants are typically aqueous solutions of two different compounds. The solubility rules are used to determine if a precipitate will form by identifying the combination of ions that can form an insoluble compound. The rules state that certain combinations of ions will result in the formation of insoluble products, while others will remain soluble in water.
In conclusion, solubility rules are used to predict precipitation reactions, which involve the formation of insoluble products. These rules help determine whether certain combinations of ions will result in the formation of a precipitate or if the compounds will remain soluble in water. By understanding the solubility properties of different ions, scientists and chemists can predict the outcome of chemical reactions and better understand the behavior of substances in solution.
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14. A 70 N tight rope walker is walking 20 meters above ground. About how much Gravitational Potential Energy does the performer have? 1,400 J 1,200 J 800 J
Answers
Answer:
It is 1,400 j
Explanation:
That is what i know
Answer:
1,400J
Explanation:
the formula for calculating Gravitational Potential Energy is mass×gravitational field strength×height
70×10×20=1,400
the carbon-nitrogen-oxygen (cno) cycle in high-mass main-sequence stars burns __________ to __________ in their cores.
Answers
The carbon-nitrogen-oxygen (CNO) cycle in high-mass main-sequence stars burns hydrogen to helium in their cores.
In high-mass main-sequence stars, such as massive stars with a mass greater than about 1.5 times that of the Sun, the primary nuclear reaction that powers their cores is the carbon-nitrogen-oxygen (CNO) cycle. This cycle converts hydrogen nuclei (protons) into helium nuclei (alpha particles) through a series of fusion reactions.
The CNO cycle involves the catalytic action of carbon, nitrogen, and oxygen isotopes. In the first step of the cycle, a proton fuses with a carbon-12 nucleus to produce nitrogen-13 and release a gamma ray. Nitrogen-13 then undergoes beta decay, converting a proton into a neutron and transforming into carbon-13. Carbon-13 can capture another proton, forming nitrogen-14. Nitrogen-14 can further undergo fusion reactions with other protons to produce oxygen-15 and eventually return back to carbon-12, completing the cycle.
Overall, the CNO cycle allows high-mass main-sequence stars to convert hydrogen into helium, releasing energy in the process and sustaining the star's energy production.
What elements does the carbon-nitrogen-oxygen (CNO) cycle in high-mass main-sequence stars burn in their cores?
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1. Consider NH3.If it dissolves in water(i) NH3 + H20 + NHẤ4+ H2O(ii)NH3 + H2O → NH+3 + OH-(iii) NH3 + H2O + NH+4+ OH-(iv) NH3 + H2O → NH+4+ OH-Which represents the dissolution of NH3 in water(a) i(b) ii (c) iii (d) iv (e) iii and iv2. HOA2+H20 . → H3O+ + OA-CIn this reaction:(i) OA c is the conjugate base of H2O(ii)OA-c is the conjugate base of HOAc (iii) H3O+ is theсconjugate base of HOA.(iv) H3O+ is the conjugate acid of H2O(a) i(b) ii (c) iii (d) iv (e) none3. Arrange the following according to increasing acid strength(i) Ka= 2.5 + 10-15(ii) Ka= 9.0 + 10-9(iii) pKa= 7.5(iv) % dissociation =100(a) iv, iii, ii, i2(b) ii, I, iii, iv(c) i, iii, iv, ii(d) i, ii, iii, iv(e) iii, iv, ii, i2
Answers
1. Ammonia is a colorless gas with a chemical formula of NH3, when it comes in contact with water, it will be transformed into Ammonium ion and it will produce one hydroxide ion, and this is why Ammonia will present a more basic (pH) behavior, the reaction that represents this behavior is:
NH3 + H2O -> NH4+ + OH-
Number 4 is the only one that represents it well
Number 3 has the same reaction but since there is a plus sign instead of an arrow, I consider it wrong.
consider a simple ideal rankine cycle with fixed boiler and condenser pressures. if the steam is superheated to a higher temperature, (select the correct statement)
Answers
Superheating the steam to a higher temperature improves the cycle efficiency.
Does increasing steam temperature enhance cycle efficiency?Superheating the steam to a higher temperature in a simple ideal Rankine cycle improves the cycle efficiency. In a Rankine cycle, the working fluid undergoes four processes: expansion in a turbine, condensation in a condenser, pumping to increase pressure, and heating in a boiler. The cycle efficiency depends on the temperature at which heat is added to the working fluid (boiler temperature) and the temperature at which heat is rejected (condenser temperature). By superheating the steam to a higher temperature before it enters the turbine, the temperature difference between the boiler and the condenser increases. This leads to an improvement in the cycle efficiency.
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How many significant figures are there in the measurement 0.0034 Kg?
Answers
Answer:
2 significant figures
Explanation:
Your measurement will have 2 significant figures, the two non-zero digits.
I hope this helps you out! :)
Answer:
there are 2 sig figs ( significant figures) which is 34. Zeros are not counted as significant figs in decimals like above
Which item can only be observed using some kind of instrument?
1.heat from the Sun
2.the planet Venus
3.a radio signal
4.an earthquake
Answers
Tritium (hydrogen-3) has a half-life of 12.3 years. How old is a bottle of wine if the tritium content is determined to be 25% in new bottle of wine
Answers
Answer:
24.6 years
Explanation:
Applying,
A = (A')\(2^{a/n}\)..................... Equation 1
Where A = Original Tritium content in the wine, A' = Tritium content in the wine after decay, a = age of the old bottle, n = half life of Tritium
From the question,
Let A = X, therefore, A' = 0.25X
Given: n = 12.3 years
Substitute these values into equation 1
X = 0.25X(\(2^{a/n}\))
1 = 0.25×(\(2^{a/12.3}\))
1/0.25 =
4 = \(2^{a/12.3}\)
\(2^{a/12.3}\) = 2²
Equation the base,
a/12.3 = 2
a = 12.3×2
a = 24.6 years
Write a balanced chemical equation for the following reactions:
1) Calcium hydroxide+ Carbon dioxide → Calcium carbonate + water
Answers
Ca(OH)
2
+CO
2
⟶CaCO
3
+H
2
O
Mercury has a density of 13.6 g/mL. What is the volume occupied by 112.0 grams of mercury?
Answers
Answer:
The answer is 8.24 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
\(volume = \frac{mass}{density} \\\)
From the question
mass = 112 g
density of mercury = 13.6 g/mL
We have
\(volume = \frac{112}{13.6} \\ = 8.23529411...\)
We have the final answer as
8.24 mLHope this helps you
A student places a small stone with a mass of 5 g into a graduated cylinder containing 50 mL of water. With the stone in the graduated cylinder, the water rises to 75 mL. What is the density of the stone? a. 0.07 g/mL b. 0.20 g/mL c. 5.00 g/mL d. 125.00 g/mL
Answers
Answer:
0.20 g/mLExplanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume} \\\)
volume = final volume of water - initial volume of water
volume = 75 - 50 = 25 mL
From the question we have
\(density = \frac{5}{25} = \frac{1}{5} = 0.2 \\ \)
We have the final answer as
0.20 g/mLHope this helps you
The irreversible gas phase reaction of ethylene (A) with hydrogen (B) to produce ethane (C) is carried out in a Ni-catalyzed packed-bed reactor: A + B =C , the rate constant for this reaction at 400°K is K= 0.2 L2 /mol s Kg cat, If the feed stream contains an equimolar amount of A and B and enters a temperature of 400°K and a pressure of 5 atm with a total volumetric flow rate of 8 L/s, what is the mass of catalyst required for a 70% conversion, considers it to be
Answers
Main answer:In order to find the mass of catalyst required for a 70% conversion, the following explanation can be followed:Explanation:Given the irreversible gas phase reaction of ethylene (A) with hydrogen (B) to produce ethane (C) is carried out in a Ni-catalyzed packed-bed reactor: A + B =CThe rate constant for this reaction at 400°K is K= 0.2 L2 /mol s Kg catThe feed stream contains an equimolar amount of A and B and enters a temperature of 400°K and a pressure of 5 atm with a total volumetric flow rate of 8 L/sTo find the mass of catalyst required for a 70% conversion, the following equation can be used:Plug the given values in the equation:To convert L/s into mol/s, the following formula can be used:Total volumetric flow rate (Q) = 8 L/sThe molar volume of the reactants can be calculated as follows:Therefore, the number of moles entering the reactor per second:To find the number of moles of A converted to C per second, the conversion can be used as follows:Therefore, the number of moles of A that will react per second:The mass of the catalyst that will be required can be calculated as follows:Therefore, the mass of catalyst required for a 70% conversion is 9.64 Kg.
Approximately 0.36 kg of catalyst is required for a 70% conversion in the given Ni-catalyzed packed-bed reactor, assuming a surface area of 10 m².
Given:
Rate constant (k) = 0.2 L²/mol s Kg cat
Total volumetric flow rate (Q) = 8 L/s
Conversion (X) = 70%
To calculate the mass of catalyst required, we need the surface area of the catalyst. Since the surface area (S) is not provided, let's assume a value of 10 m² for demonstration purposes.
Substituting the values into the equation:
Catalyst mass = (k * 0.3² * Fa₀ * Fb₀) / (Rate constant * Surface area of catalyst)
Catalyst mass = (0.2 L²/mol s Kg cat * (0.3)² * 4 L/s * 4 L/s) / (0.2 L²/mol s Kg cat * 10 m²)
Catalyst mass = (0.2 * 0.09 * 4 * 4) / (0.2 * 10)
Catalyst mass = 0.72 / 2
Catalyst mass = 0.36 kg
Therefore, approximately 0.36 kg of catalyst is required for a 70% conversion in the given Ni-catalyzed packed-bed reactor, assuming a surface area of 10 m².
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Which of the following sets of quantum numbers represents an electron with the highest energy in a multi-electron atom? A)n=4, ? =0,ml = 0 B) n = 3, € = 2, ml =-1 C) n=3, [ =1,ml =0 D) n=2, € =1,ml =-1 E) n=4, € =1,ml=1
Answers
The set of quantum numbers that represents an electron with the highest energy in a multi-electron atom is A) n=4, l=0, ml=0.
The principal quantum number (n) is the most important factor in determining the energy of an electron in a multi-electron atom. The higher the value of n, the higher the energy level of the electron. Therefore, the electron with the highest energy will have the highest value of n.
The angular momentum quantum number (l) and the magnetic quantum number (ml) do not have as much of an effect on the energy level of an electron as the principal quantum number does. Therefore, the values of l and ml are not as important in determining the energy level of an electron as the value of n is.
Since the set of quantum numbers A) n=4, l=0, ml=0 has the highest value of n, it represents an electron with the highest energy in a multi-electron atom.
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What if we are in a secret alien community and earth is the ghetto so that’s why aliens never visit earth
Answers
Answer:
then the cause of Corona is a gas leak
Answer:
Maybe because we have different skin tone we have white, dark, brown or we might not speak the same language as them or look like them they are going to be confused
Explanation:
Batteries function to move electrons from the anode to the cathode. Where does the following reaction occur in an electrochemical cell?
Li —> Li1+ + 1e-
A. Salt Bridge
B. The anode
C. The cathode
D. The aqueous solutions.
Answers
The reaction occurs in The anode of an electrochemical cell. Option B is the correct option
What is an electrochemical cell?This refers to a device that can produce electrical energy from the chemical reactions occurring in it, or use the electrical energy to facilitate chemical reactions.
An electrochemical cell splits the oxidant and reductant in a way that allows electrons to flow through an external circuit from the reductant (which gets oxidized) to the oxidant (which causes reduction) while preventing them from physically touching each other.
The two compartments of an electrochemical cell where the half-reactions occur are called the anode(Oxidation occurs here) and the cathode (Reduction occurs here), and they must have an electrode that you can connect to the external circuit.
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A sample of hydrogen contains 3.5 moles and occupies 5.2 L of space. Under the same conditions, how many moles of hydrogen are required to occupy 7.4 L of space?
Answers
4.97 moles of hydrogen are required to occupy 7.4 L of space at the same conditions as the given sample.
The volume of the hydrogen gas is changing, but the pressure and temperature are constant. According to Avogadro's Law, equal volumes of gases at the same temperature and pressure contain the same number of particles (moles).
So, we can set up the following proportion to solve for the unknown number of moles:
moles 1 / volume 1 = moles 2 / volume 2
Substituting the given values:
3.5 moles / 5.2 L = x moles / 7.4 L
Solving for x:
x = 3.5 moles / 5.2 L * 7.4 L
x = 4.97 moles (rounded to two significant figures)
Therefore, 4.97 moles of hydrogen are required to occupy 7.4 L of space at the same conditions as the given sample.
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What is an Oxidizing Agent? ( answer in simple language)
Answers
Answer:
an agent that helps accept electrons on others like oxygen, halogens
Explanation:
a substance that tends to bring about oxidation by being reduced and gaining electrons.
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an asrnout in space might fell weighless but there still gravitaional attraction between the astournout and earth . Which to factor affect this gravitanol attraction
Answers
Answer:
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
True or False: Igneous rocks form from Sediment.
Answers
Answer:
true
Explanation:
Answer:
false
Explanation:
Sedimentary rocks form by breaking down other kinds of rocks into small particles and washing or blowing them away; metamorphic rocks form from other rocks and igneous rocks form by melting other rocks. ... Igneous Rocks: form by crystallizing melted material (magma).
HELP!! Which of the following phase changes occur at point B on the phase diagram shown below?
Boiling
Condensation
Freezing
Sublimation
Answers
Answer:
freezing
Explanation:
because condensation is gas to liquid boiling is liquid to gas and sublimation is solid to gas
The gas pressure inside a container decreases when which of the following happens? the number of molecules is increased and the temperature is increased the number of gas molecules is decreased the temperature is increased the number of gas molecules is increased
Answers
How many kilograms are there in 81. 2 Mg? Express your answer in scientific notation
Answers
As there are 1,000,000 kg in 1 Mg, we must multiply by 1,000,000 to convert from Mg (megagrams) to kilogrammes. Therefore:
8.12 × 107 kg or 81.2 Mg is equal to 81.2 x 1,000,000 kg.
8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.
, I apologize for my mistake in the previous response. The conversion from Mg to kg is indeed done by multiplying by 1,000,000. Thank you for providing the correct calculation and explanation. The answer is:
81.2 Mg = 81.2 x 1,000,000 kg = 8.12 x 10^7 kg
Expressed in scientific notation, there are 8.12 x 10^7 kilograms in 81.2 Mg.
8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.
8.12 x 107 kilos, or in scientific notation, are contained in 81.2 Mg.
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A gas in a rigid container remains at constant _______________ even if the pressure and/ or temperature are changed. The pressure exerted by the gas will ____________ as its temperature increases.
Answers
The missing words for the given blanks are "volume" and "increase" respectively. This means that in a rigid container, if the pressure and/or temperature are changed, a gas will remain at constant volume, but the pressure it exerts will increase if its temperature is increased.
What is pressure?Pressure is the amount of force exerted per unit area of a surface. It is typically measured in units of force per square meter or in units of force per square inch. Pressure is measured in pascals (Pa), which are the SI unit of pressure.
Pressure is a crucial concept in physics because it governs the behavior of fluids and gases.What is temperature?Temperature is a measure of the degree of hotness or coldness of a substance. It is commonly measured in degrees Celsius (°C) or degrees Fahrenheit (°F). Temperature is a crucial concept in physics because it governs the thermal behavior of matter. In other words, it determines how heat is transferred between objects and how materials expand or contract with changes in temperature.
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what are all the stages of mitosis? (please make it long)
Answers
Mitosis is conventionally divided into 5 phases, which include prophase, prometaphase, metaphase, anaphase and telophase and cytokinesis.
Interphase
Before coming into mitosis, a mobile spends a length of its increase underneath interphase.
Prophase
Prophase straight away follows the S and G2 levels of the cycle and is marked by way of condensation of the genetic fabric to form compact mitotic chromosomes composed of chromatids attached at the centromere.
Prometaphase
In the prometaphase, the nuclear envelop disintegrates. Now the microtubules are allowed to extend from the centromere to the chromosome.
Metaphase
At this level, the microtubules start pulling the chromosomes with equal pressure and the chromosome ends up in the center of the cell. This area is referred to as the metaphase plate.
Anaphase
The splitting of the sister chromatids marks the onset of anaphase. These sister chromatids end up the chromosome of the daughter nuclei.
Telophase
The chromosomes that cluster at the two poles start coalescing into an undifferentiated mass, because the nuclear envelope begins forming round it.
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A student walk barefoot on a hot, sunny day from a sandy beach on to a parking lot paved with dark asphalt. Explain why the two materials will feel different on the student's feet.
Answers
Answer:
because the first one sand is rough it is because sand is made from crushed shells and rocks and the parking lot is paved by dark asphalt means it is rough but hard and easy to step but the sand can hurt your feet beacuse sometimes crushed shells are pointed
Explanation:
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Answer
The sandy beach is a light color of sand and it reflects the light causing less heat absorption. The dark asphalt does not reflect the light and heat, it absorbs and stores the heat.
Explanation:
write the name of the neutral compound resulting when the cation at the left is combined with the anion at the top. name the hydrogen containing compounds as acids.
Answers
To determine the name of a neutral compound resulting from the combination of a cation and an anion, we need to first determine the chemical formula of the compound. The chemical formula of a neutral compound is determined by the charges of the cation and anion. The charges must cancel each other out to form a neutral compound.
For example, if we have the cation Na+ and the anion Cl-, the resulting neutral compound would be NaCl, also known as sodium chloride.
If we have the cation H+ and the anion Cl-, the resulting neutral compound would be HCl, also known as hydrochloric acid. Note that when a hydrogen-containing compound is combined with an anion, it is named as an acid.
Another example is the cation Ca2+ and the anion SO4 2-. The resulting neutral compound would be CaSO4, also known as calcium sulfate.
In general, the name of a neutral compound is determined by the name of the cation followed by the name of the anion. If the compound contains hydrogen, it is named as an acid.
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If you have a little air in a balloon, find the volume of the balloon if the mass is 0.6 g and the density of the air is 0.0012 g / mL
Answers
Hey there!:
Mass = 0.6 g
Density = 0.0012 g/mL
Volume = ??
Therefore :
Density = mass / Volume
0.0012 = 0.6 / V
V = 0.6 / 0.012
V = 500 mL
Hope this helps!
What information about a molecule can you determine from its
chemical formula?
Answers
The information needed to determine a molecular formula includes the empirical formula and the molar mass of the compound.
The empirical formula provides the simplest whole-number ratio of atoms present in a compound, while the molecular formula gives the actual number of atoms of each element in a molecule. To determine the molecular formula, the molar mass of the compound is required.
By comparing the molar mass to the empirical formula mass, the ratio of empirical formula units to the molecular formula units can be determined. This ratio helps in finding the molecular formula. Without the empirical formula and molar mass, it is not possible to determine the molecular formula accurately.
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Complete question is:
What information is needed to determine a molecular formula?
In the equation
H2 + N2 --> NH3
NH3 is a
reactant
product
yields
catalyst
Answers
What can cause water to change to a different state or phase?
A. a change of volume
B. a change in temperature
Answers
B change in temperature