HELP I NEED TO EXPLAIN THE ANSWERS!!!
Propane burns in excess oxygen according to the following reaction.
C3H8 + 5O2 → 3CO2 + 4H2O
a.H ow many moles each of CO2 and H2O are formed from 3.85 mol of propane?
ans: 11.6 mol CO2, 15.4 mol H2O
b. If 0.647 mol of oxygen is used in the burning of propane, how many moles each of CO2 and H2O are produced? How many moles of C3H8 are consumed?
ans: 0.388 mol CO2, 0.518 mol H2O, 0.129 mol C3H8
Answers
Explanation:
A. Solve the answer using stoichiometry. This means that you have to look at the coefficients of the equation to solve this.
The problem gave the moles of propane used to form product. Your job is to find the moles of product formed. Use the equation to solve this. The coefficients represent moles.
Propane has no coefficient implying that the number in front of propane would be 1. CO₂ has a coefficient of 3, and H₂O has a coefficient of 4. This means that for every mole of propane, 3 moles of CO₂ and 4 moles of H₂O are formed.
Multiply the moles of propane by the coefficients of the products.
3.85 × 3 = 11.55 mol CO₂
3.85 × 4 = 15.4 mol H₂O
You have solved for moles of each product.
B. This problem has about the same concept as the one before. Look at the equation. For every 5 moles of O₂, 3 moles of CO₂ and 4 moles of H₂O are formed. For every 5 moles of O₂, 1 mole of propane is needed.
This time, however, you cannot simply multiply the amount of moles by the coefficient. This is because you need 5 moles, not 1, to get that many moles produced.
This time, multiply the moles by the coefficients over the original coefficient.
0.647 × 3/5 = 0.388 mol CO₂
0.647 × 4/5 = 0.518 mol H₂O
0.647 × 1/5 = 0.129 mol C₃H₈
Moles of CO₂ and H₂O are produced by the 3.85 mol of propane is 11.55 and 15.4 moles respectively.
What is stoichiometry?Stoichiometry of the reaction tells about the amount of species present before and after the completion of reaction.
Given chemical reaction is :
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
From the stoichiometry of the reaction it is clear that:
1 mole of C₃H₈ = produces 3 moles of CO₂
1 mole of C₃H₈ = produces 4 moles of H₂O
1 mole of C₃H₈ = reacts with 5 moles of O₂
5 moles of O₂ = produces 3 moles of CO₂
5 moles of O₂ = produces 4 moles of H₂O
5 moles of O₂ = reacts with 1 mole of C₃H₈
3.85 moles of C₃H₈ = produces 3×3.85=11.55 moles of CO₂3.85 moles of C₃H₈ = produces 4×3.85=15.4 moles of H₂O0.647 moles of O₂ = reacts with 1/5×0.647=0.129 moles of C₃H₈0.647 moles of O₂ = produces 3/5×0.647=0.388 moles of CO₂0.647 moles of O₂ = produces 4/5×0.647=0.517 moles of H₂OHence required moles are calculated above.
To know more about stoichiometry, visit the below link:
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Related Questions
?What statement best describes the arrangement of the atoms in an ethylene molecule?
Answers
How is the momentum of an object determined?
What happens every time one of the boys playing ping pong hits the ball?
How could the boy playing ping pong keep from hitting the ball off the table?
I GIVE 20 PTS PLS HEELP
Answers
Answer: He needs to hit the ball with less force.
Explanation:
hope this helps
2. Based off the answer to the first question, by hitting the ping pong ball, momentum is transferred from the boy to the ball. Causing the ball to have more velocity/speed and gain more momentum.
3. Momentum before = momentum after
Every time the ball hits the table, some momentum transfers from the ball to the table. Every time the player hits the ball, some momentum transfers from the player to the ball. This allows the player to continue playing ping pong as the ball always has momentum.
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answers
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as
A pure substance is a single kind of matter. ----------------------- A(n)
is made up of two or more substances that are together in the same place, but each substance keeps its own properties.
Answers
Answer:21
Explanation:
10 points!!!! HELP!!!! BRAINLIEST TO CORRECT ANSWER!!
Which of these best matches the waves with their applications?
Select one:
a. X-rays—2 and ultraviolet rays—3
b. X-rays—3 and ultraviolet rays—2
c. X-rays—1 and ultraviolet rays—2
d. X-rays—2 and ultraviolet rays—1
Answers
Answer:Answer is C
Explanation:
Answer:
X-rays--1 and ultra violet rays --2
Explanation:
(WHOEVER DOES THIS GETS BRAINLEST!!) describe the structure of the earth in your own words. (pls add some detail and pls dont make it too short thx)
Answers
Answer:
T.he structure of the earth is construed of a crust, the mantle, outer core, and the inner core. The shape of the earth is an oblate spheroid, because it is slightly flattened at the poles and bulging at the equator. Each layer has it's own chemical composition, and can impact Earth's surface.
PLS HELP ME
ALSO THE LAST ONE IS STATE THE TREND IN DESNITY SHOWN IN TABLE
Answers
Dew point is the temperature at which water vapor in the air begins to condense into liquid water. The higher the dew point, the more moisture there is in the air. From the starting sounding in the simulation, change the temperature for each point between 800 hPa and 1,000 hPa to 40°C. Then, test how changing the two dew points closest to Earth’s surface (while keeping the temperature constant) affects whether a cloud forms and how big the cloud is if it does form. Describe what you observe, and explain why it occurs.
Answers
Answer:
Dew points indicate the amount moisture in the air. The higher the dew points, the higher the moisture content of the air at a given temperature. Dew point temperature is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapor content) in order to reach saturation. A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure.
When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew point temperature is NEVER GREATER than the air temperature. Therefore, if the air cools, moisture must be removed from the air and this is accomplished through condensation. This process results in the formation of tiny water droplets that can lead to the development of fog, frost, clouds, or even precipitation.
Relative Humidity can be inferred from dew point values. When air temperature and dew point temperatures are very close, the air has a high relative humidity. The opposite is true when there is a large difference between air and dew point temperatures, which indicates air with lower relaitve humidity. Locations with high relative humidities indicate that the air is nearly saturated with moisture; clouds and precipitation are therefore quite possible. Weather conditions at locations with high dew point temperatures (65 or greater) are likely to be uncomfortably humid.
Explanation:
Dew points indicate the amount moisture in the air. The higher the dew points, the higher the moisture content of the air at a given temperature. Dew point temperature is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapor content) in order to reach saturation. A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure.
When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew point temperature is NEVER GREATER than the air temperature. Therefore, if the air cools, moisture must be removed from the air and this is accomplished through condensation. This process results in the formation of tiny water droplets that can lead to the development of fog, frost, clouds, or even precipitation.
Relative Humidity can be inferred from dew point values. When air temperature and dew point temperatures are very close, the air has a high relative humidity. The opposite is true when there is a large difference between air and dew point temperatures, which indicates air with lower relaitve humidity. Locations with high relative humidities indicate that the air is nearly saturated with moisture; clouds and precipitation are therefore quite possible. Weather conditions at locations with high dew point temperatures (65 or greater) are likely to be uncomfortably humid.
As per the given scenario, the temperature for each point between 800 hPa and 1,000 hPa is changed to 40°C. This means that the temperature of the air at all those altitudes is the same.
What are dew points?Dew point is the temperature at which the air becomes saturated with water vapor, leading to the formation of dew, fog, or clouds when the temperature drops further.
Now, the two dew points closest to Earth’s surface are changed while keeping the temperature constant. Dew point is the temperature at which water vapor begins to condense into liquid water. Therefore, changing the dew point changes the amount of moisture in the air.
When the dew point is close to the air temperature, the relative humidity is high, and the air is almost saturated with water vapor. In such a case, if the dew point is raised even slightly, the air becomes saturated, and the water vapor condenses into liquid water.
On the other hand, if the dew point is lowered, the relative humidity decreases, and the air becomes drier. In such a case, the chances of cloud formation are reduced.
Therefore, if the dew point is raised close to the air temperature, a cloud forms. The size of the cloud will depend on the amount of moisture present in the air. The higher the dew point, the more moisture there is in the air, and the bigger the cloud will be.
Learn more about Clouds at:
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How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
Describe the kinetic energy/ movement of the particles in plasma.
Answers
Answer:
Plasma is the highest energy state kf matter consisting of a collection of free-moving electrons, positive ions and neutral particles.
How do particals move around in plasma? plasma particles are spred our and move around randomly, but unlike gas, they contain some free ions and electrons, which gives plasma its ability to conduct electricity.
what is kinetic energy? A form energy that an object or particle by reason of motion. Dictionary def.- energy which a body possesses by virtue if being in motion.
i wasn't sure which one you needed. :)
Match these items.
1. imprint of plant or animal
original-remains fossil
2. undecayed plant or animal part
carbonized fossil
3. replaced by a mineral
petrified fossil
4. only carbon remains
cleavage
5. mountain
geology
6. from magma
metamorphic
7. from physical and chemical changes
igneous
8. sandstone
print fossil
9. helps identify rocks
landform
10. science of Earth
sedimentary
Answers
1. print fossil
2. carbonized fossil
3. petrified fossil
4. cleavage
5. landform
6. igneous
7. metamorphic
8. print fossil
9. geology
10. sedimentary
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The print fossil, original-remains fossil, petrified fossil, carbonized fossil, landform, igneous, metamorphic, sedimentary, cleavage, and geology are the respective matches as given in the question.
Print fossil is imprint of plant or animal and basically known as fossil impression. Original-remains fossil comprises of the original tissues and parts of organism and undecayed plant or animal part. Petrified fossil is replaced by a mineral. Carbonized fossil is only carbon remains. Landform is a mountain. Igneous is from magma.
Metamorphic is from physical and chemical changes. Sedimentary rocks are sandstone. Cleavage helps to identify rocks. Geology is the study of science of earth.
Learn more about rocks and fossils:
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what would happen to the identity of a fluorine atom (F) if it gained 4 protons?
Answers
Answer:
A fluorine atom has nine protons and nine electrons, so it is electrically neutral. If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1
Please help! Fill the blank
____________, algae and microorganisms use the ____________from light to make sugars from ________ in the atmosphere as well as through the process of ______________which also releases ____________. These _______ can be used immediately or stored for growth or later use.
Answers
2. Energy
3.
4.
5.
Could carbohydrate be #5?
2. Energy
3. Carbon Dioxide
4. Photosynthesis
5. Oxygen
6. atoms? I’m not sure here.
You may think of changes in climate occurring as you go north or south. This climber stayed at the same latitude and went up. What explains the difference in temperature and climate between the top and bottom of Mt. Kilimanjaro? Please explain in 3-5 sentences thank you for 81 points
Answers
Answer: I'm not really sure but I think its dew to the different heights and tempura going up and down and the flow of wind.
Explanation:
Answer:
Mountains make it possible for snow to be found at the equator. Why does the temperature become colder the higher up a Mountain? Generally the climate on mountains get progressively colder with increased altitude (the higher up you go).
Explanation:
Which type of bond does the phrase “opposites attract” apply to best? Explain.
Answers
Answer:
The phrase "opposites attract" is true for atoms. The positively charged ion (cation) and the negatively charged ion (anion) are attracted to each other. It is this attraction, created by the transfer of electrons, that forms the ionic bond. The transfer of one electron creates a single bond.
Explanation:The phrase "opposites attract" is true for atoms. The positively charged ion (cation) and the negatively charged ion (anion) are attracted to each other. It is this attraction, created by the transfer of electrons, that forms the ionic bond. The transfer of one electron creates a single bond.
Answer:
phrase opposites attract definitely describes ionic bond because this is the only type of bonds that requires positive charge in one atom and negative charge in other atom to form an ionic compound. HOPE THIS ANSWER YOUR QUESTION!!!
A dog is exposed to radiation and it caused damage to a cell’s DNA. This genetic change results in the controls on mitosis not working. Which one of the following is most likely to occur after this damage?
Responses
An infection in the blood spreads results in sepsis ,
A blood clot stops oxygen to the heart, causing a heart attack,
Cells produce new versions of a virus to allow it to spread throughout the body
The cell dividing rapidly and creating a cancerous tumor
Answers
I suppose the last option to be correct.
Answer:
The cell dividing rapidly and creating a cancerous tumor
Explanation:
what is methyl orange
Answers
Answer:
orange made up from methyl
Fill in the blanks with the word that best completes each statement. Scientists develop knowledge by making ------------about the natural world that may lead to a scientific question. A scientific question may lead to a(n) -------------which can be tested. The results of ------------can lead to changes in scientific knowledge.
Answers
Answer:
1. observations
2. hypothesis
3. experimentation
Explanation:
Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.
Answerobservations
2. hypothesis
3. experimentation
Explanation:
Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.
:
Explanation:
I don't get this either. :(
A certain rock has large crystals of feldspar mica and quartz. explain how and where the rock might have formed.
Answers
Answer:
The answer is granite
Explanation:
granite contains feldspar,mica and quartz as well as other things.Granite is known as a igneous rock.Granite is formed when thick magma slowly cools and crystallises long before it is able to reach the Earth's surface.so it is formed in magma
3. A recent flood in the area has caused many short-term changes to
the ecosystem. Which is a long-term change?
A. Standing water in the streets and sewers
B. Temporary displacement of organisms
C. Permanent change in the landscape
D. Poor water quality in rivers and streams
Answers
Answer:
c
Explanation:
While standing water in the streets and sewers (option A) and poor water quality in rivers and streams (option D) may persist for some time after the flood, they are generally considered short-term changes as they can eventually be remedied through clean-up efforts and restoration programs.
Temporary displacement of organisms (option B) can also be considered a short-term change, as organisms will eventually return to their original habitats once conditions improve.
However, a permanent change in the landscape (option C) such as altered river channels, new water bodies, or changes in topography, can have lasting effects on the ecosystem and its inhabitants. These changes may alter habitat suitability, nutrient cycling, and water availability, which can impact the ecosystem for years or even decades to come.
Answer: C
Explanation:
The landscape could be flooded. Houses and buildings may be restricted.
Which of the following points is/are true for plasma?
(1) It is a very good conductor of electricity.
(2) Gas is transformed into plasma state.
(3) It is influenced by magnetic and electric fields.
(4) All of the choices
Answers
Answer:
4 all of the choices. the rest of the answers are correct so it's all of the choices
Answer all questions pls
1) How does the cryosphere help regulate Earth's temperature?
2) What kind of organisms are found in oceanic trenches? Describe.
3) Explain how an Estuary can support a wide variety of food webs.
4) List out and describe the factors that help meteorologists forecast weather.
Answers
Answer:
1) The cryosphere contains the frozen parts of the planet. This sphere helps maintain Earth's climate by reflecting incoming solar radiation back into space. As the world warms due to increasing greenhouse gases being added to the atmosphere by humans, the snow and ice are melting.
2) Organisms like the Frilled Shark, Giant Spider Crab. Atlantic Wolffish Pair, Fangtooth Fish, Six-Gill Shark, Giant Tube Worms, Vampire Squid, Pacific Viperfish. But there are most likely archaeabacteria which are prokaryotic bacteria or single-celled organisms. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today.
3) Many different types of plant and animal communities call estuaries home because their waters are typically brackish — a mixture of fresh water draining from the land and salty seawater. This unique combination of salty and fresh water creates a variety of habitats. Estuaries are full of decaying plants and animals. This makes the soil of estuaries rich in nutrients. Because the soil is so rich, lots of different plants grow in estuaries. The plants attract lots of different animals to the estuary and those animals attract other animals to the estuary.
4) Temperature, humidity, precipitation, air pressure, wind speed, and wind direction are key observations of the atmosphere that help forecasters predict the weather. These same factors have been used since the first weather observations were recorded. Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists. The three main factors of weather are light (solar radiation), water (moisture) and temperature.
Explanation:
U dont have to copy and paste this put these are some ideas to use for ur answers
Is Gravity stronger in air or in water? idk -,-
Answers
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
Answers
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
atoms and molecules are made up of
Answers
Les atomes sont composés de protons, électrons et neutrons.
The eye symbol represents Which hazards
Answers
Answer:
This one should be REALLY easy for everybody to know but the answer is anything that can pose a hazard to your eyes
Explanation:
Answer:cyclone
Explanation:
HELP IMPORTANT TEST!! Why must animals eat food but plants do not eat food? A: Plants do not appear to eat, but they do actually eat nutrients in the soil. Animals must eat to obtain food that they can't get from the soil. B:Plants make their own food through photosynthesis. Animals must eat because they cannot make their own food. C: Plants use photosynthesis to make their own food instead of eating. Animals eat plants because they like the taste of certain fruits. B: Plants make their own food through photosynthesis, so they do not eat. Animals eat because the energy they make themselves is enough to live but not grow. By eating, they can grow big and strong.
Answers
Answer:B
Explanation:The answer is B because plants use photosynthesis to make their own food while animals such as humans do not make their own food using the sun photosynthesis is using the suns Energy to produce your own food If you think about it humans are animals and do you use the suns energy to produce your own food no
Students were investigating how static electricity can cause objects to move. They decided to take pictures of what they observed.Write a scientific explanation about the forces that can affect objects when the objects are not touching. Make a claim and state your evidence.
Answers
Answer:
Answer: Think of a thunderstorm, sometimes it depends on the magnitude of a push or pull to move an object even without touching it. When a object is sitting still, it means the normal force and the gravitational force are balanced, when one force becomes greater, it takes over.
Explanation:
I'm new to brainly but I hope I could help!
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
Answers
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.