Answer:
The final total pressure in the cylinder = 8.53 atm
Explanation:
From the information given:
The volume of liquid ethanol = 22.5 mL
The density of the liquid ethanol = 0.789 g/mL
The volume of the cylinder = 10.0 L
The pressure of the cylinder = 4.50 atm
The temperature of the cylinder = 25°C = (273.15 + 25) K = 298.15 K
Using the ideal gas equation:
PV = nRT
where n is the number of moles before the reaction:
[tex]n = \dfrac{PV}{RT}[/tex]
[tex]n = \dfrac{4.5 \ \times 10 }{0.08205 \times 298.15}[/tex]
n = 1.8395 moles
Recall that:
Density = mass /volume
Thus; the mass of liquid ethanol = (Density × volume ) of liquid ethanol
the mass of liquid ethanol = 0.789g/mL × 22.5 mL
the mass of liquid ethanol = 17.7525 g
Since we know the mass of the liquid ethanol = 17.7525 g and the standard molar mass of liquid ethanol = 46.07 g/mol
Then:
the number of moles of liquid ethanol = 17.7525 g / 46.07 g/mol
the number of moles of liquid ethanol = 0.38534 mol
The chemical equation for the reaction can be represented as:
[tex]C_2H_5OH + 3O_2 \to 2CO_{2(g)} + 3H_2O_{(g)}[/tex]
From above 1 mole of ethanol react with 3 moles of oxygen to produce 2 moles of carbon dioxide and 3 moles of water
Since each mole of ethanol reacts with 3 moles of oxygen
Then:
0.38534 mol of ethanol = (0.38534 mol × 3) oxygen
Therefore, the amount of oxygen molecule left in the cylinder after the reaction = 1.8395 mol - (0.38534 mol × 3)
= 1.8395 mol - 1.15602 mol
= 0.68348 mol
The number of moles of carbon dioxide formed = 2 × moles of ethanol
number of moles of carbon dioxide formed = 2 × 0.38534 mol
number of moles of carbon dioxide formed = 0.77068 mol
The number of moles of water vapour formed = 3 × 0.38534 mol
The number of moles of water vapour formed = 1.15602 mol
∴
The total moles of gas = moles of oxygen left + moles of water vapour + moles of carbon dioxide
The total moles of gas = 0.68348 mol + 0.77068 mol + 1.15602 mol
The total moles of gas = 2.61018 mol
Finally, to find the total pressure in the cylinder when the temperature is 125°C = (273.15 + 125)K
= 398.15 K
Then; using the ideal gas equation PV = nRT
P = nRT/V
P = ( 2.61018 × 0.08205 × 398.15 ) / 10
P = 85.2699/10
P = 8.52699 atm
P ≅ 8.53 atm
3. Converting from the English system to the metric system can be accomplished using _______
Answer:
You can convert between the various different sizes by merely moving the decimal point the correct number of places. The basic metric units are meters (for length), grams (for mass or weight), and liters (for volume).
Explanation:
A chemical equation that shows the formulas of the chemicals involved but not the proportions in which they react is called the
a. word equation
b. balanced equation
c. skeleton equation
d. incomplete equation
A chemical reaction can be expressed in terms of:
words equationthe skeleton equation balanced equationThe skeleton equation is still in unbalanced form
so only chemical formulas of reactants and products so that the relative amounts of the reactants and products are not included
For example :
word equationEthane + Oxygen ⇒ Carbon dioxide + Water
skeleton equationC₂H₆ + O₂ ⇒ CO₂ + H₂O
balanced equation2C₂H₆ + 7O₂ ⇒ 4CO₂ + 6H₂O
incomplete equation2C₂H₆ + 7O₂ ⇒ 4CO₂(H₂0 is still missing)
What do you call a combination of potential and kinetic energy?
Identify the change that will not increase the volume of a gas. Assume that all other variables are constant.
O increase the number of particles
O decrease the pressure
o increase the temperature
decrease the temperature
Answer:
increase the number
Explanation:
All waves carry? Which one on the picture
Answer:
matter
Explanation:
Answer:
All waves carry energy
A tide with the largest difference between water levels at high and low tides is known as a spring tide. Two spring tides occur in each lunar cycle. This is because a spring tide occurs when the Moon
A
is closest to Earth.
B
and the Sun pull on Earth at a 90° angles.
C
and the Sun are aligned and pull on Earth.
D
is farthest from Earth.
Answer:
C is the answer
Explanation:
Tidal cycles are affected by lunar day, semidiurnal and diurnal, lunar nodes, axial tilt ... Their tidal forces act to reinforce each other, and the ocean both rises higher and ... Tidal ranges - differences between neap tides and spring tides - graph ... The perigee of the moon can occur at any point in the orbit around the earth due ...
The correct option is option C among all the given options. This is because a spring tide occurs when the Moon and the Sun are aligned and pull on Earth.
What is tide?Any periodic deformation of one astronomical entity brought on by the gravitational pull of another is referred to as a tide. The most well-known are the regular fluctuations in Earth's sea level that are caused by shifts in the Sun's and Moon's relative locations. You can think of the tides as driven waves, flowing waves, and standing waves.
A tide with the largest difference between water levels at high and low tides is known as a spring tide. Two spring tides occur in each lunar cycle. This is because a spring tide occurs when the Moon and the Sun are aligned and pull on Earth. The Moon's ability to produce tides results from changes inside its gravitational field across Earth's surface in comparison to its strength at the planet's center.
Therefore, the correct option is option C among all the given options.
To learn more about tide, here:
https://brainly.com/question/3304072
#SPJ6
When an unknown amount of methane reacts with 40.7 g of chlorine, 40.5 g of methyl chloride and 36.5 g of hydrogen chloride form how much methane was used round to the tenth
Answer:
36.3 gram
Explanation:
CH₄ + Cl₂ = CH₃Cl + HCl
In any reaction , mass is conserved
mass of product = 40.5 + 36.5 = 77 g
Let methane reacted be x .
mass of reactant = x + 40.7
mass of reactant = mass of product
x + 40.7 = 77
x = 36.3 gram
methane reacted = 36.3 gram.
If you had three molecules of P2SO4, how many total atoms would that be? (will mark brainliest) help me pwzz. i would really be happy if someone helps me
Answer:
pydlhdgkskydkgsoteltstositsoteotsitstositsitstitsitstssyoyos
What is the boiling point of a drop of water
Answer:
The boiling point of water at sea level is 100 degrees Celsius, or 212 degrees Fahrenheit.
please help me answer this question
Answer:
Pretty sure it is C
Explanation:
Due to the fact that It is talking about biotic survival
Answer:
I think part C
Because u are talking about the survivability
can someone walk me through how to solve this?
True or False: Mechanical weathering is the breakdown or rock by changing its chemical composition.
Answer: False
Explanation:
That’s not using mechanics
Answer:
False
Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface.
Hope this helps☺️
What type of energy is the energy of moving things?
a. Mechanical b. Electromagneticc. Sound d. Thermal
Answer:
A. Mechanical
Explanation:
Mechanical energy is the sum of an object's kinetic energy and potential energy, which are both energies of motion.
What happens to a wave’s energy when it is absorbed by the road?
What is the amount of heat, in joules, required to increase the temperature of a 49.5-gram sample of water from 22°C to 66°C?
1. What is the mass of 200 mL of ethanol if the density of ethanol is 0.789g/mL?
Answer:
The answer is 157.8 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question we have
mass = 0.789 × 200
We have the final answer as
157.8 gHope this helps you
7. If an atom had 10 protons, 8 electrons and 9 neutrons, what would the mass number be?
Answer:
19
Explanation:
10 + 9 protons plus neutrons
Acceleration is defined as the rate of change for which factor?
A.) displacement
B.) position
C.) time
D.) velocity
Answer:d
Explanation:
Answer:
The correct answer is D. velocity
Explanation:
I had that same question
46. Which set of numbers balances this equation?. Agl + Na2S →
Ag2S + Nal
O 3,7,20
0 2,1,1,2
O 0,5,0,2
O 2,0,0,2
Cocoa powder dissolves in milk. Cocoa is the ___ and milk is the ___
solute, solvent
newly discovered substance on Mars has a mass of 2.3x10-5,g and volume of
200 ml. What is its density in g/mL?
Answer:
The answer is
[tex] \huge 1.15 \times {10}^{ - 7 } \: \: g/ml \\ [/tex]
Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{2.3 \times {10}^{ - 5} }{200} \\ [/tex]
We have the final answer as
[tex]1.15 \times {10}^{ - 7 } \: \: g/ml[/tex]
Hope this helps you
What will happen when a reactant is added to a system at equilibrium?
Answer:
the equilibrium of the system will be upset.
Explanation:
a p e x
You are part of a scientific team designing a space probe that will land on Saturn's moon Titan. Your task is to write a report detailing the conditions the probe will need to withstand and propose some materials to be used in the construction of the probe.
Answer:
Material required to construct the Probe is :
Palladium based alloy, nickel based alloys, rhenium tungsten, wires, piping, duct, roofing membrane, aluminium or titanium body and circuit.
Explanation:
Probe is a robotic aircraft used to explore the galaxy. It does not revolve in the orbit. It goes beyond the orbit and explores the different planets. These probes are used by scientists to collect information regarding the space without sending an astronaut. Probes are sent into the space, they collect information and transmits data to the scientists on earth.
Imagine that you heat a pot of water to a boil (212°F), then you turn off the stove and let the water sit there. The room is at room temperature (72°F) What temperature do you predict the water cool to after sitting for 8 hours? (
Answer:
72 °F
Explanation:
Hello,
In this case, since matter tend the be stable at conditions they do not change, if we have water at room temperature (72 °F) and we heat it until boiling but then we turn off the stove, we molecularly see that due to the heat, the molecules start moving faster and crashing to each other; however when that fed energy starts being removed as the stove gets turned off, the molecules lose energy causing them to start moving slower so they lose energy until a point the remain at the initial status, that is 72 °F because thermal equilibrium is reached. Therefore it is likely for the water to be at 72 °F as well once 8 hours have passed, because a thermal equilibrium is reached with the environmetnal temperature.
Best regards.
Choose all the answers that apply.
The cell membrane
A.is not a true organelle
B.contains and protects the cell
C.is made of a double layer of phospholipids
D.contains proteins that allow materials to pass through
Answer:
B or D its a tuff call because
Explanation:
the cell membrane keeps toxic substances out of the cell. they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles
Answer:
B. Contains and protects the cell
C. Is made of a double layer of phospholipids
D. Contains proteins that allow materials to pass through.
Explanation:
All are true except A. Is not a true organelle.
The cell membrane is absolutely an organelle.
Hope this helped!
How many shrimp do you have to eat before you make your skin turn pink?
Answer:
That's kind of a weird question. A lot though.
Explanation:
lot
goofy ahhAnswer:
a
Explanation:
Will award 40 points! Is my answer correct??
Select the correct answer from each drop-down menu. When a car is parked in hot sunlight, the temperature of the car’s seats ____ and the thermal energy of the seats _____
Answer:
When a car is parked in hot sunlight, the temperature of the car’s seats
increases and the thermal energy of the seats increases .
Explanation:
Ahhhh Help Please! ASAP! Thanks
Answer: Argon-52
Explanation: Its B
what is 23.54 kg x 9.8 m/s2
Answer:
230.692
Explanation:
23.54kg*9.8m/s²= 230.692
Answer:
F = 230.69 N
Explanation:
Given data:
Mass = 23.54 Kg
Acceleration = 9.8 m/s²
Force = ?
Solution:
Mass ×Acceleration is equal to force.
F = 23.54 Kg × 9.8 m/s²
F = 230.69 Kg.m/s²
Kg.m/s² = N
F = 230.69 N