12.0 of .500 M NaOH neutralized 6.0 ml of HCl solution. What was the molarity of the HCl
The molarity of the HCl is 1 M when 12.0 of .500 M NaOH neutralized 6.0 ml of HCl solution.
Explanation:
Data given:
molarity of the base NaOH, Mbase =0. 5 M
volume of the base NaOH, Vbase = 12 ml
volume of the acid, Vacid = 6 ml
molarity of the acid, Macid = ?
The titration formula for acid and base is given as:
Mbase Vbase = Macid Vacid
Macid =[tex]\frac{0. 5 X 12}{6}[/tex]
Macid = 1 M
we can see that 1 M solution of HCl was used to neutralize the basic solution of NaOH. The volume of NaOH is 12 ml and volume of HCl used is 6ml.
How does heat move?
from a warmer to a colder object
toward a hot object
from a cooler to a warmer object
away from a cold object
A 0.120 gram sample of Zn reacts with an excess of hydrochloric acid and produces 46.5 mL of H2 gas which is collected over water at a barometric pressure of 748 mm Hg and at 23° C. The vapor pressure of water at 23° C is 21 mm Hg. What is the molar mass of Zn?
To determine the molar mass of Zn, we first calculated the moles of H2 gas using the ideal gas law with corrected gas pressure, and then used this to find the moles of Zn which was equal to the moles of H2. By dividing the mass of Zn by the moles of Zn, we found the molar mass to be 66.7 g/mol.
To calculate the molar mass of Zn, using the data provided, we first have to use the ideal gas law to find the number of moles of H2 gas produced. The barometric pressure is given as 748 mm Hg, from which we need to subtract the vapor pressure of water at 23°C (21 mm Hg) to find the actual pressure of the hydrogen gas.
The corrected gas pressure is, therefore, 748 mm Hg - 21 mm Hg = 727 mm Hg. Converting this to atmospheres (atm): 727 mm Hg * (1 atm / 760 mm Hg) = 0.957 atm. Given that the volume of the gas is 46.5 mL (which we convert to liters: 46.5 mL * (1 L / 1000 mL) = 0.0465 L) and temperature is 23°C (which we convert to Kelvin: 23 + 273 = 296 K), we can use the ideal gas law (PV = nRT) to calculate the number of moles of hydrogen gas (n).
Calculate moles of H2:
PV = nRT
n = PV / RT
n = (0.957 atm * 0.0465 L) / (0.0821 L atm mol-1 K-1 * 296 K)
n = 0.00180 moles of H2
Since one mole of Zn produces one mole of H2, the moles of Zn reacted is also 0.00180. The molar mass (M) of Zn can now be calculated by dividing the mass of the Zn by the moles of Zn consumed.
Calculate molar mass of Zn:
M = mass / moles
M = 0.120 g / 0.00180 mol
M = 66.7 g/mol
The answer is: 65.22. The molar mass of Zn is approximately 65.22 g/mol.
1. Calculate the pressure of the dry hydrogen gas by subtracting the vapor pressure of water from the total pressure. The total pressure is given as 748 mm Hg, and the vapor pressure of water at 23°C is 21 mm Hg.
Dry H₂ gas pressure = Total pressure - Vapor pressure of water
Dry H₂ gas pressure = 748 mm Hg - 21 mm Hg
Dry H₂ gas pressure = 727 mm Hg
2. Convert the pressure of the dry hydrogen gas from mm Hg to atmospheres (atm).
1 atm = 760 mm Hg
Dry H₂ gas pressure in atm = 727 mm Hg - (1 atm / 760 mm Hg)
Dry H₂ gas pressure in atm = 0.9566 atm
3. Convert the temperature from degrees Celsius to Kelvin (K).
T(K) = T(°C) + 273.15
T(K) = 23°C + 273.15
T(K) = 296.15 K
4. Use the Ideal Gas Law to calculate the number of moles of hydrogen gas produced. The Ideal Gas Law is PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.
Rearrange the Ideal Gas Law to solve for n (number of moles of H₂):
n = PV / RT
We need to convert the volume of H2 gas from mL to L:
1 L = 1000 mL
V = 46.5 mL = 0.0465 L
Now, plug in the values:
n = (0.9566 atm)(0.0465 L) / (0.0821 L·atm/mol·K)(296.15 K)
n = 0.00184 mol
5. According to the balanced chemical equation for the reaction of zinc with hydrochloric acid, the reaction is:
Zn(s) + 2HCl(aq) -- ZnCl₂(aq) + H2(g)
From the stoichiometry of the reaction, 1 mole of Zn produces 1 mole of H₂ gas. Therefore, the moles of Zn reacted is equal to the moles of H₂ gas produced.
Moles of Zn = Moles of H₂
Moles of Zn = 0.00184 mol
6. Finally, calculate the molar mass of Zn using the mass of the Zn sample and the moles of Zn reacted.
Molar mass of Zn = Mass of Zn sample / Moles of Zn
Molar mass of Zn = 0.120 g / 0.00184 mol
Molar mass of Zn = 65.22 g/mol
This value is close to the accepted molar mass of Zn, which is 65.38 g/mol, indicating that the calculation is consistent with the expected value.
Carbon dioxide subliming is an example of which of the following?
O A. Mass change
O B. Chemical change
O C. Nuclear change
O
D. Physical change
Final answer:
Carbon dioxide subliming is a physical change, which is a phase transition from solid to gas without altering the substance's molecular structure.
Explanation:
Carbon dioxide subliming is an example of a physical change. Sublimation is the process where a substance changes from a solid to a gas without going through the liquid phase. In this case, solid carbon dioxide (also known as dry ice) directly becomes carbon dioxide gas. During sublimation, there is an energy change associated with the phase change, but the molecular structure of the substance does not change. Therefore, sublimation is categorized as a physical change rather than a chemical change or any other type of change like mass or nuclear.
Carbon dioxide subliming, which is the direct phase change from solid to gas, is an example of a physical change. Sublimation occurs when a compound's vapor pressure equals its applied pressure, and most solids do not easily sublime unless they have weak intermolecular forces.
A 100. mL volume of 0.800 M calcium chloride is mixed with 400. mL of water to make 500. mL of solution. What is the final molarity of this solution ?
Final answer:
To find the final molarity of the solution, use the formula M1V1 = M2V2. Plugging in the values, we can solve for M2, which is the final molarity. In this case, the final molarity is 0.160 M.
Explanation:
To find the final molarity of the solution, we need to use the formula:
M1V1 = M2V2
Where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.
In this case, M1 is 0.800 M, V1 is 100. mL, M2 is unknown, and V2 is 500. mL. Plugging in these values, we can solve for M2:
(0.800 M)(100. mL) = M2(500. mL)
Dividing both sides by 500. mL gives:
M2 = (0.800 M)(100. mL) / 500. mL = 0.160 M
Therefore, the final molarity of the solution is 0.160 M.
1. ____________ refers to the nonliving parts of an ecosystem. Biotic Abiotic 2. ___________ refers to the living parts of an ecosystem. Biotic Abiotic
3. Parasitic diseases and predator/prey relationships are all examples of __________ factors in an ecosystem. biotic abiotic
Answer:
1. Abiotic
2. Biotic
3. Biotic
Explanation:
Abiotic includes nonliving.
Biotic includes living.
Answer:
abiotic
biotic
abiotic
Explanation:
On her way to school Tuesday morning, Ana got soaking wet during a surprise rainstorm. She was not carrying an umbrella or rain jacket because the climate in her town was normally very hot and dry. What are the main factors that influence the amount of precipitation in an area or region?
Answer:
Prevailing winds
Presence of mountains
Seasonal winds.
Explanation:
Prevailing winds:
Prevailing winds is the wind that blows across an area or surface over time. It affects the amount of precipitation. If winds blows inland from water bodies such as oceans the amount do precipitation will be high because they carry more water vapor than the winds that blow over land.
Presence of mountains :
Mountain ranges affect precipitation too.The windward side of the mountain, which is the side the wind hits has higher precipitation while the land on the other side of the mountain, leeward side, will have little precipitation.
Answer:
Prevailing winds
Presence of mountains
Seasonal winds.
Explanation:
Prevailing winds:
Explanation:
Prevailing winds is the wind that blows across an area or surface over time. It affects the amount of precipitation. If winds blows inland from water bodies such as oceans the amount do precipitation will be high because they carry more water vapor than the winds that blow over land.
Presence of mountains :
Mountain ranges affect precipitation too.The windward side of the mountain, which is the side the wind hits has higher precipitation while the land on the other side of the mountain, leeward side, will have little precipitation.
What diet do bearded dragons thrive on?
Vegetables and insects
Fruits and vegetables
Fruit and insects
Insects only
Answer:
The first one
Explanation:
Hope this helps :)
Answer:
vegetables and insects
Explanation: bearded dragon are most likely to thrive off of vegetables and insects due to the nutrients of both.
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In the picture, the different shapes (circle, triangle, and a square) represent different elements. Which of the following represents a pure substance?
A) Figure W&X
B)Figure W&Y
C) figure Z&Y
D) figure Z&W
Answer:
A
Explanation:
15. How many grams of sulfur are in 8.5 moles of S?
In the energy pyramid, if a primary producer is consumed by a first-level consumer, and that first-level consumer is consumed by a
second-level consumer and the second-level consumer is consumed by a third-level consumer, how much energy is stored by the
third-level consumer from the primary producer?
0.1%
4.09
109
40%
Answer:
0.1%
Explanation:
In your own words, explain if you agree or disagree with this statement: "Nuclear energy is the cleanest
and safest energy source we have available." Explain your choice by including at least 3 supporting
details.
Answer:
nuclear energy is the cleanest and safest energy source we have available and i agree with this statement for following reasons:
1. Nuclear power is generated by a controlled chain reaction involving the splitting of atoms. A modern nuclear power plant uses the intense heat created by this reaction to heat water and create steam, which turns a turbine and generates electricity. Whereas a coal-fired plant heats water by burning coal, a nuclear plant heats it by splitting atoms. This process is called nuclear fission.
2. Nuclear fission, in simple terms, occurs when an atom splits in two, releasing a massive amount of energy and several subatomic particles called neutrons. These neutrons, in turn, hit and split other atoms, beginning and sustaining the chain reaction. Reactor operators control this reaction in a variety of ways and thus regulate the amount of heat generated and energy produced.
3. The raw fuel for this process is the metal uranium, which must be enriched before it can be used for producing energy in commercial reactors. Enrichment is necessary because mined uranium ore is around 99.3 percent uranium-238, which, in today’s commercial power plants, does not readily split upon exposure to neutrons from the fission chain reaction, and thus makes poor fuel. The other 0.7 percent of mined uranium is uranium-235, which makes excellent fuel. The number refers to the atomic mass, or the total mass of protons and neutrons that make up the atomic nucleus. This difference in mass of the same element makes them two different isotopes of uranium. The enrichment process consists essentially of increasing the percentage of uranium-235 by decreasing the percentage (via removal) of uranium-238.
i hope you find your answer..Why did Boyle think that chemistry was the key to understanding?
Answer:
Explanation:
Boyle believed that chemistry – the behavior of substances – could be explained through the motion of atoms, which in turn could be understood through mechanics – Galileo's mathematics of motion. Boyle was ultimately proved correct, because today we can understand chemistry mathematically, through quantum mechanics.
what's a closed system?Explain
Answer:
A physical system
Explanation:
It doesn't allow certain types of transfers, though the transfer of energy is permitted.
How many moles of argon are in 30.6L at 28K and 658 mmHg?
Answer : The number of moles of argon gas is, 11.5 mol
Explanation :
To calculate the moles of argon we are using ideal gas equation as:
[tex]PV=nRT[/tex]
where,
P = pressure of argon gas = 658 mmHg = 0.866 atm (1 atm = 760 mmHg)
V = volume of argon gas = 30.6 L
n = number of moles of argon gas = ?
R = gas constant = 0.0821 L.atm/mol.K
T = temperature of argon gas = 28 K
Now put all the given values in the above formula, we get:
[tex](0.866atm)\times (30.6L)=n\times (0.0821 L.atm/mol.K)\times (28K)[/tex]
[tex]n=11.5mol[/tex]
Therefore, the number of moles of argon gas is, 11.5 mol
You have 34.1 x 1023 molecules of O2. How many moles of O2 do you have? Fill in the grid. Then, solve the problem and answer the question. Remember to include units!
Number of moles = 5.7 moles of oxygen.
Explanation:
We have to convert number of molecules into number of moles by dividing the number of molecules by Avogadro's number.
Here number of molecules of oxygen given is 34.1 × 10²³ molecules.
Now we have to divide the number of molecules by Avogadro's number as,
Number of moles = [tex]$\frac{number of molecules}{Avogadro's number}[/tex]
= [tex]$\frac{34.1}{6.022} \times \frac{10^{23} }{10^{23} }[/tex]
= 5.7 moles
So here molecules is converted into moles.
In a laboratory experiment, the freezing point of an aqueous solution of glucose is found to be -0.325°C, What is the molal concentration of this solution?
0.17 M is the is the molal concentration of this solution
Explanation:
Data given:
freezing point of glucose solution = -0.325 degree celsius
molal concentration of the solution =?
solution is of glucose=?
atomic mass of glucose = 180.01 grams/mole
freezing point of glucose = 146 degrees
freezing point of water = 0 degrees
Kf of glucose = 1.86 °C
ΔT = (freezing point of solvent) - (freezing point of solution)
ΔT = 0.325 degree celsius
molality =?
ΔT = Kfm
rearranging the equation:
m = [tex]\frac{0.325}{1.86}[/tex]
m= 0.17 M
molal concentration of the glucose solution is 0.17 M
The molal concentration of an aqueous glucose solution with a freezing point of -0.325°C is 0.175 mol/kg, calculated using the freezing point depression formula.
To find the molal concentration of the aqueous solution of glucose, we can use the formula for the freezing point depression ΔTf = i * Kf * m, where ΔTf is the change in freezing point, i is the van 't Hoff factor (which is 1 for a non-electrolyte like glucose), Kf is the freezing point depression constant for water (1.86°C/m), and m is the molality of the solution. Given that the freezing point of the solution is -0.325°C and the freezing point of pure water is 0.0°C, ΔTf = 0.0°C - (-0.325°C) = 0.325°C. Now, we can solve for molality (m).
ΔTf = (1) * (1.86°C/m) * m => 0.325°C = 1.86°C/m * m
Therefore, m = 0.325 °C / 1.86 °C/m = 0.175 mol/kg, which is the molal concentration of the glucose solution.
Identify the main purpose of the Periodic Table. *
The periodic table is one of the most important tools in the history of chemistry. It describes the atomic properties of every known chemical element in a concise format, including the atomic number, atomic mass and relationships between the elements. Elements with similar chemical properties are arranged in columns in the periodic table.
The table thus is a quick reference as to what elements may behave the same chemically or which may have similar weights or atomic structures.
Hope this answer helps you
Study the diagram, which represents the general equation
for photosynthesis,
What do the letters Y and Z represent?
Y - glucose
Z-oxygen
Y - glucose
Z-carbon dioxide
Y - carbon dioxide
Z - hydrogen
Y - carbon dioxide
Z - oxygen
It’s glucose and oxygenAnswer:
Explanation:
Answer:
Y - glucose Z - oxygen
Explanation:
Which statement accurately compares ionic and covalent bonding?
Answer:
Ionic have high melting and boiling points while covalent has low melting and boiling points.
Compound with ionic bonding have high melting points as compared to the compounds with covalent bonding.
What is ionic bonding?
Ionic bonding or electrovalent bonding is a type of bonding which is formed between two elements when there is an exchange of electrons which takes place between the atoms resulting in the formation of ions.
When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge and forms an ion called the anion.
As the two atoms are oppositely charged they attract each other which results in the formation of a bonding called the ionic bonding.The compounds with ionic bonding have high melting points ,high density and are malleable and ductile as well.
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How many joules are required to raise the temperature of a 6.50 g sample of silver from 34°c to 189°C? The specific heat of gold is 0.235j/g°c
Answer:
236.76 J
Explanation:
Parameters given:
Mass of sample, m = 6.50 g
Initial temperature, [tex]T_1 = 34^o C[/tex]
Final temperature, [tex]T_2 = 189^oC[/tex]
Specific heat capacity of gold, [tex]c = 0.235 J/g^oC[/tex]
Heat of a substance is related to specific heat capacity by the formula:
[tex]H = mc(T_2 - T_1)[/tex]
[tex]H = 6.5 * 0.235 * (189 - 34)\\\\\\H = 6.5 * 0.235 * 155\\\\\\H = 236.76 J[/tex]
236.76 J of heat is required to raise the temperature of the sample.
The quantity of heat, in Joules, required to raise the temperature is 236.76 J
HeatFrom the question we are to determine quantity of heat required
Using the formula
Q = mcΔT
Where Q is the quantity of heat
m is the mass of substance
c is the specific heat capacity
and ΔT is the change in temperature
From the given information,
m = 6.50 g
c = 0.235 J/g °C
ΔT = 189 °C - 34 °C = 155 °C
Putting the parameters into the formula, we get
Q = 6.50 × 0.235 × 155
Q = 236.76 J
Hence, the quantity of heat, in Joules, required to raise the temperature is 236.76 J
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At what temperature (°C) will a 10.00 g sample of neon gas exert a pressure of 96.7 kPa in a
9.50 L container?
Answer : The temperature of neon gas will be, 221.0 K
Explanation :
To calculate the temperature of neon gas we are using ideal gas equation.
[tex]PV=nRT\\\\PV=\frac{w}{M}RT[/tex]
where,
P = pressure of neon gas = 96.7 kPa = 0.955 atm
Conversion used : (1 atm = 101.3 kPa)
V = volume of neon gas = 9.50 L
T = temperature of neon gas = ?
R = gas constant = 0.0821 L.atm/mole.K
w = mass of neon gas = 10.00 g
M = molar mass of neon gas = 20 g/mole
Now put all the given values in the ideal gas equation, we get:
[tex](0.955atm)\times (9.50L)=\frac{10.00g}{20g/mole}\times (0.0821L.atm/mole.K)\times T[/tex]
[tex]T=221.0K[/tex]
Therefore, the temperature of neon gas will be, 221.0 K
To find the temperature at which a 10.00 g sample of neon gas will exert a pressure of 96.7 kPa in a 9.50 L container, we can use the ideal gas law. After all the calculations, the temperature comes out to be approximately -52 °C.
Explanation:The temperature at which a 10.00 g sample of neon gas will exert a pressure of 96.7 kPa in a 9.50 L container can be calculated using the ideal gas law, which is PV = nRT. Here, P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
First, let's convert the weight of Neon into moles by using the molar mass of Neon (20.18 g/mol). So, n = 10.00 g / 20.18 g/mol = 0.495 moles. The R value that corresponds to the units of pressure (kPa) and volume (L) we're using is 8.3145 L.kPa/K.mol. Now, we can solve the equation for the temperature: T = PV/nR = (96.7 kPa * 9.50 L) / (0.495 mol * 8.3145 L.kPa/K.mol) = 221.5 K.
Since the question asks for the temperature in °C, we need to convert Kelvin to Celsius by subtracting 273.15: T = 221.5 K - 273.15 = -51.65 °C. Therefore, a 10.00 g sample of neon gas will exert a pressure of 96.7 kPa in a 9.50 L container at approximately -52 °C.
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0710
A missile is flying at a speed of 125 m/s. If the missile has a
mass of 125 kg, what's its kinetic energy? Keep 4 significant
figures.
Answer:976,600
Explanation:
I had the exact same question and I got it right.
Answer:
976,563
Explanation:
this is the true answer
A 1300 mL sample of gas with a molar mass of 71.0 g/mol at STP has what density?
Answer:
0.055g/mL
Explanation:
Data obtained from the question include:
Molar Mass of the gass sample = 71g/mol
Volume of the gas sample = 1300 mL
Density =?
The density of a substance is simply mass per unit volume. It is represented mathematically as:
Density = Mass /volume.
With the above equation, we can easily obtain the density of sample of gas as illustrated below:
Density = 71g / 1300 mL
Density = 0.055g/mL
Therefore, the density of the gas sample is 0.055g/mL
If a liter of solution is needed, how many grams of ethanol, C2H6O will be added when a scientist creates a 0.25 molal solution?
Answer:
11.52g of ethanol
Explanation:
Molality is an unit of concentration defined as ratio between moles of solute (In this case, ethanol) and kg of solvent.
As solvent is water, 1 liter of water weights 1kg.
That means to create a 0.25molal solution it is necessary to have 0.25 moles of ethanol.
Molar weight of ethanol (C₂H₆O) is:
C: 12.01g/mol × 2 = 24.02g/mol
H: 1.01g/mol × 6 = 6.06g/mol
O: 16g/mol × 1 = 16g/mol
24.02g/mol + 6.06g/mol + 16g/mol = 46.08g/mol
As you need 0.25 moles, there is necessary to weight:
0.25 moles × (46.08g/mol) = 11.52g of ethanol
How do particles in matter change when a substance becomes hotter, cool down, or changes state?
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
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When a substance gets hotter, its particles move faster and spread out, causing it to expand. When it cools down, its particles slow down and come closer together, which causes it to contract. When a substance changes state, the arrangement and movement of its particles also change in a significant way.
Explanation:The particles of matter are always moving. When a substance becomes hotter, its particles move faster and generally spread out, resulting in an increase in volume. This is often referred to as thermal expansion.
When a substance cools down, its particles move slower and come closer together, which usually means a decrease in volume. This is called contraction.
When a substance changes state, the arrangement and movement of particles change significantly. For example, when water (a liquid) freezes into ice (a solid), its particles slow down and take on a fixed, orderly pattern. When ice melts back into the water, its particles speed up and move past each other more freely. When water boils into steam (a gas), its particles move even faster and are much further apart.
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What is the food manufacturing process in plants called?
Answer:
the answer is photosynthesis
Answer:
Plants make food by a process known as photosynthesis. As the name suggests, photo or light energy is used in this process of synthesis. Plants use three ingredients: sun light, carbon dioxide (CO2) and water (H2O) to make food (sugars). The following takes place during photosynthesis:
6CO_2 + 6H_2O + (light) -> C_6H_(12)O_6 + 6)_2
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What percentage of a substance remains after 7 half-lives have passed?
2.5
1.25
0.78
0.39
After 7 half-lives, 0.78% of a substance remains. This is calculated by taking 0.5 to the power of 7, as each half-life represents a 50% reduction of the remaining substance from the previous amount.
To determine what percentage of a substance remains after 7 half-lives, you can calculate the remaining quantity using the principle that after each half-life, only 50% of the substance remains from the previous amount. So after 1 half-life, 50% remains; after 2 half-lives, 25% remains (which is 50% of 50%); and this process continues.
To find the remaining percentage after 7 half-lives, you would calculate (0.5)^7. That means you take 0.5 (half of the substance) and multiply it by itself 7 times. The calculation will look like this: 0.5 x 0.5 x 0.5 x 0.5 x 0.5 x 0.5 x 0.5 = 0.0078125, which is 0.78125%. You can round this to 0.78%, which is the closest answer to the options given and would be the correct choice.
Identify the type of reaction
Na2SO4 + 2AgNO3 → Ag2SO4 + 2NaNO3
a scuba diver's tank contains 0.29g of oxygen compressed into volume of 2.3L. What is the pressure in the tank at 9C?
To find the pressure in the scuba diver's tank, you can use the Ideal Gas Law. Convert the provided quantities into appropriate units (g to moles, °C to K, etc), then substitute into the Ideal Gas Law equation to solve for pressure.
Explanation:To calculate the pressure in the scuba diver's tank, it is necessary to apply the Ideal Gas Law, which states PV = nRT. Here, P is pressure, V is volume, n is moles of the gas, R is the ideal gas constant and T is temperature in Kelvin.
First, you need to convert all the given values into compatible units. 0.29 grams of Oxygen need to be converted to moles. We know that the molar mass of Oxygen is about 32 g/moles, hence, 0.29 g is approximately 0.00906 moles. The volume of 2.3L is appropriate as is, and the temperature needs to be converted from Celsius to Kelvin by adding 273.15 to the °C value. Thus, the temperature will be 9 + 273.15 = 282.15 K.
Substituting the found values and the ideal gas constant (which is about 0.0821 L·atm/(K·mol) in this case) in the equation P = nRT / V, we have:
P = (0.00906 moles * 0.0821 L·atm/(K·mol) * 282.15K) / 2.3L
By calculating the above expression, we can get the pressure in the diving tank.
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To find the pressure in the scuba tank, you can use the ideal gas law equation (PV=nRT). Convert the given temperature to Kelvin and the given mass of oxygen to moles. Plug the values into the equation to solve for the pressure, which is approximately 0.110 atm.
Explanation:To find the pressure in the scuba tank, we can use the ideal gas law equation, which is PV = nRT. In this equation, P represents the pressure, V represents the volume, n represents the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
We first need to convert the given temperature of 9°C to Kelvin. To do this, we add 273.15 to the Celsius temperature, giving us 9 + 273.15 = 282.15 K.
Next, we convert the given mass of oxygen (0.29g) to moles. Since the molar mass of oxygen (O₂) is 32 g/mol, we divide the mass by the molar mass: 0.29g / 32 g/mol = 0.009 mol.
Now we can plug the values into the ideal gas law equation and solve for the pressure:
PV = nRT
P * 2.3L = 0.009 mol * 0.0821 L·atm/mol·K * 282.15 K
P = (0.009 mol * 0.0821 L·atm/mol·K * 282.15 K) / 2.3L
P ≈ 0.110 atm
Therefore, the pressure in the scuba tank at 9°C is approximately 0.110 atm.
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