A gas mixture has three components: N2, F2, and He. Their partial pressures are 0.50 atm, 0.16 atm,
and 0.18 atm, respectively. What is the pressure of the gas mixture?
Enter your answer in the provided box.
atm
Answers
Answer:
What????????????????????????????
Explanation:
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Related Questions
Please help with these 2 questions
Question 1
The enthalpy of vaporization for methanol is 35.2 kJ/mol. Methanol has a vapor pressure of 1 atm at 64.7 °C. Using the Clausius-Clapeyron equation, what is the vapor pressure for methanol at 53.7 °C?
-Give your answer in atmospheres, to the third decimal point.
Question 2
The enthalpy of vaporization for dimethyl ether is 27.5 kJ/mol. Dimethyl ether has a vapor pressure of 760 torr at 34.6 °C. Using the Clausius-Clapeyron equation, what is the vapor pressure for methanol at -14.5 °C? Give your answer in torr, to the first decimal point.
Answers
Answer:
Answer 1
2.115 atm
Answer 2
17.9 torr
A scientist wants to prove that certain chemicals in cosmetics are likely to cause harm to developing fetuses, when used by a pregnant woman. What is the most likely limitation she will face in her scientific design? PLEASE HURRY!!
Answers
Answer:
D. Limitations due to ethical concerns about experimental subjects.
Explanation:
Answer:
A
Explanation:
(its my friend)
Which of the following would cause entropy to decrease?
Answers
Answer:
B . CO2(g) -----> CO2(l) Entropy canbe decreased only in the cases when liquid is converted to solid and when gas is converted to solid or liquid. The option B is correct.
Answer:
b. CO_2 (g) --> CO_2 (l)
Explanation:
A P E X
What two of the following organisms are secondary consumers in this food web?
Answers
Secondary consumers are organisms that primarily feed on herbivores or other primary consumers.
They occupy the next trophic level above the primary consumers in a food web. They obtain energy by consuming the primary consumers and play an important role in regulating the population of herbivores.
Examples of commonly observed secondary consumers include:
Carnivorous mammals: Animals such as wolves, lions, and tigers that feed on herbivores like deer, zebras, or gazelles.
Birds of prey: Species like eagles, hawks, and owls that consume small mammals, reptiles, or other birds.
Carnivorous fish: Fish like pike, barracuda, or bass that prey on smaller fish or aquatic invertebrates.
Predatory insects: Insects such as spiders, mantises, or dragonflies that feed on other insects, including herbivorous insects.
In a specific food web, the identification of secondary consumers would depend on the specific organisms present and their feeding interactions. It would be necessary to analyze the trophic relationships among the organisms in the food web to determine the secondary consumers accurately.
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What is the formula of a compound formed by the ions M-1 and X+3 ? a. MX3 b. M3X c. M3X3 d. MX6 e. None of the above
Answers
The formula of a compound formed by the ions M-1 and X+3 is MX3. The correct option is A. A compound is a pure substance composed of two or more distinct chemical substances.
A compound can be broken down into its components via chemical reactions. Water is an example of a compound made up of two hydrogen atoms and one oxygen atom.
Chemical formulae for compoundsChemical formulae, often known as empirical formulae or molecular formulae, are used to represent compounds chemically. It is a string of letters and symbols that represent the elements found in the substance.
A subscript indicates how many atoms of each element are present. For example, H2O represents water, which is made up of two hydrogen atoms and one oxygen atom.
What are ions?When a neutral atom or molecule gains or loses electrons, it becomes an ion. The ion becomes a cation when it loses electrons, and it becomes an anion when it gains electrons. Positive ions are formed by metals losing electrons, whereas negative ions are formed by nonmetals gaining electrons.
When an ionic compound is formed, oppositely charged ions combine to form a stable compound.
What is the formula of a compound formed by the ions M-1 and X+3?An ionic compound is formed when a metal and a nonmetal react. M-1 and X+3, respectively, are the anion and cation of an ionic compound. As a result, the compound formed is written as MX3, with the cation coming first followed by the anion. Hence, the answer is option (a) MX3.
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Determine the mass of zirconium_______________, silicon__________________, and oxygen________________, found in 0.3384 mol of zircon, ZrSiO4, a semiprecious stone. Your answer must have the correct number of significant figures.Enter the number only, with no units.
Answers
1) Determine the mass of zirconium
Convert moles of zircon into moles of zirconium
\(\text{molesofZr}=0.3384molesofZrSiO_4\cdot\frac{1\text{molofZr}}{1molofZrSiO_4}=0.3384\text{molesofZr}\)Convert moles of zirconium into mass of zirconium (g)
\(\text{gramsofZr}=0.3384\text{molesZr}\cdot\frac{91.224\text{ g Zr}}{1\text{molofZr}}=30.87\text{ g Zr}\)2) Determine the mass of Silicon
Convert moles of zircon into moles of silicon
\(\text{molesofSi}=0.3384molesofZrSiO_4\cdot\frac{1\text{molofSi}}{1molofZrSiO_4}=0.3384\text{molesofSi}\)Convert moles of silicon into mass of silicon (g)
\(\text{gramsofSi}=0.3384\text{molesofSi}\cdot\frac{28.085\text{ g of Si}}{1\text{molofSi}}=9.504\text{ g Si}\)3) Determine the mass of Oxygen
Convert moles of zircon into moles of oxygen
\(\text{molesofO}=0.3384molesofZrSiO_4\cdot\frac{4\text{molofO}}{1molofZrSiO_4}=1.3536\text{molesofO}\)Convert moles of oxygen into mass of oxygen
\(\text{gramsofO}=1.3536\text{molesofO}\cdot\frac{15.999\text{ g O}}{1\text{mol of O}}=21.66gO\)The mass of zirconium is 30.87 g
The mass of silicon is 9.504 g
The mass of oxygen is 21.66 g
consider a solution that has equal concentrations of both hac and ac
Answers
A solution with equal concentrations of both HAc (acetic acid) and Ac- (acetate ion) is an example of a buffer solution. Buffer solutions are capable of resisting changes in pH when small amounts of acid or base are added. In this case, the HAc and Ac- components act as a conjugate acid-base pair, with HAc being the weak acid and Ac- being its conjugate base.
A buffer solution consists of a weak acid and its conjugate base (or a weak base and its conjugate acid). In this scenario, the equal concentrations of HAc (acetic acid) and Ac- (acetate ion) form a buffer system.
Acetic acid (HAc) is a weak acid that can partially dissociate in water, releasing H+ ions and forming acetate ions (Ac-). The equilibrium between HAc and Ac- can be represented as follows:
HAc ⇌ H+ + Ac-
When the concentrations of HAc and Ac- are equal, the buffer solution is at its optimal buffering capacity. It means that the system is capable of resisting changes in pH when small amounts of acid or base are added. If an acid is added, the acetate ions can react with the additional H+ ions to maintain the pH. Conversely, if a base is added, the excess OH- ions can react with the acetic acid to maintain the pH.
The presence of a conjugate acid-base pair in the buffer solution allows for the maintenance of a relatively constant pH. Buffer solutions find applications in various fields, such as biochemistry, pharmaceuticals, and analytical chemistry, where the control of pH is essential for maintaining proper chemical reactions or biological processes.
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In an experiment to estimate the enthalpy change of a reaction, a student makes two aqueous solutions, each containing one of the reactants. The student combines the solutions, both originally at the same temperature, in a calorimeter and records the final temperature of the mixture. In addition to the masses of the solutions and the temperature change of the mixture, which of the following pieces of information does the student need to calculate the enthalpy change of the reaction? why?
A) The boiling point of the reaction mixture
B) The heat of fusion of the reaction mixture
C) The density of the reaction mixture
D) The specific heat capacity of the reaction mixture
Answers
Based on the formula for calculating quantity of Heat, the student requires the mass, temperature change and the specific heat capacity of the reaction mixture.
What is enthalpy change of a reaction?The enthalpy change of a reaction is the amount of heat evolved or absorbed when reactant molecules react to form products.
In the use of a calorimetry to determine the enthalpy of a reaction, the law of conservation of energy is applied.
Heat lost = Heat gainedThe quantity of Heat is calculated using the formula below:
Quantity of Heat = mass × specific heat capacity × temperature cahangeTherefore, in addition to the masses of the solutions and the temperature change, the student requires the specific heat capacity of the reaction mixture.
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A chemistry student is investigating how particle size
affects the rate of dissolving. In her experiment, she
adds a sugar cube, sugar crystals, or crushed sugar to
each of three beakers of water, stirs the mixtures for
10 seconds, and records how long it takes the sugar to
dissolve in each beaker.
Answers
A solute in a gaseous, liquid, or solid phase dissolves in a solvent to create a solution through the process of dissolution.
what is dissolution?A solute in a gaseous, liquid, or solid phase dissolves in a solvent to create a solution through the process of dissolution.Dissolving can be demonstrated by stirring sugar into water. The solvent is water, and the solute is sugar. An illustration of the dissolution of an ionic chemical is the dissolving of salt in water. When combined with water, sodium chloride (salt) separates into sodium and chloride ions.Small particles have a higher interfacial solubility because the disjoining pressure of small particles is higher than that of large particles. Small particles dissolve more quickly because of their higher differential concentration, thinner diffusion layer, and larger surface area. So crushed sugar dissolve more quickly.To learn more about : dissolution
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Calculate the mass, in grams, of 502 atoms of iron ,Fe (1 mol of Fe has a mass of 55.85g).
Answers
Answer:
mass of iron in grams = 1.493×\(10^{-23}\) g
Explanation:
Since one mole of anything is equal to 6.022×\(10^{23}\) of that thing, we can apply that to atoms as well. 1 mol of iron = 55.85g. i.e. the molar mass of iron = 55.85g/mol.
To find the number of moles present, we can divide the number of atoms by the number of atoms in 1 mole, i.e Avogadro's Constant (6.022×\(10^{23}\)).
\(\frac{N}{N_{A}} = n\)
∴ n(Fe) = 502/6.022×\(10^{23}\) = 8.3361×\(10^{-22}\) mol of iron
Finally, to find the mass of iron present, we can divide the number of moles by the molar mass.
\(\frac{n}{M}} = m\)
∴ m(Fe) = 8.3361×\(10^{-22}\)/55.85 = 1.493×\(10^{-23}\) g. (4 sig. fig.)
can someone answer this question?
Answers
Answer:
what is the question i could help if u gave me the question but i don't see it
Explanation:
Name the following compounds:
Answers
The names of the given compounds are:
a) Carbon tetrachloride
b) 1-chloro-2-chloromethane (also known as chloroethyl chloride)
c) 1,2-dichloroethane
d) 2-chloro-2-methylbutane
e) 1,4-dichlorobutane
What are compoundsA compound is a substance made up of two or more different elements chemically combined in fixed proportions. The elements in a compound are held together by chemical bonds, which are formed when atoms of different elements share or transfer electrons to achieve a stable electron configuration.
Compounds have unique properties that are different from their constituent elements, such as melting point, boiling point, density, and reactivity. They can be formed through various chemical reactions, such as synthesis, decomposition, combustion, and oxidation. Examples of common compounds include water (H2O), table salt (NaCl), carbon dioxide (CO2), and glucose (C6H12O6).
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Draw the final product of this series of reactions. 1. SOCI2 2. NaCN OH • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If more than one product is possible, only draw the major product. • If the reaction produces a racemic mixture, draw both stereoisomers. • Separate structures with + signs from the drop-down menu.
Answers
SOCI2 is sulphonyl chloride is a chlorinating reagent ,
What is chlorinating reagent ?
Additionally, the production of allyl and benzyl chlorides frequently involves radical chlorination.
Several chlorinating agents have the capacity to function as both electrophilic and radical sources of Cl, depending on the circumstances of the reaction and the presence or absence of radical initiators, such as chemical or light initiators.
What kind of chemical is utilized in chlorination?
There have been various instances where sodium chlorite has been utilized as a chlorinating reagent.
As a result, benzene gave modest yields of chlorobenzene (20%) while mesitylene underwent monochlorination in 95% yields when combined with trichloroacetic acid (which produces chlorous acid, HOClO, in situ) 1999M1493>.
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Your explanation should include a claim, evidence, and scientific reasoning based on the data provided and the process of photosynthesis.
Answers
Answer:
yuh 100% true dude
Explanation:
...............
Hair is composed of a protein called cellulose
O
True
O False
Answers
Answer:True
Explanation:
Iv done this before
In common speech, some people may use the terms hypothesis and theory interchangeably. In science, however, the terms have different meanings. What do you think is an important difference between a hypothesis and a theory?
Answers
Answer: In science, a hypothesis is a possible explanation for an observation, while a theory is an explanation that is supported by a large body of evidence.
Explanation: exact answer
why gold is called inert metal
Answers
Gold has a heavy enough nucleus that its electrons must travel at speeds nearing the speed of light to prevent them from falling into the nucleus. This relativistic effect applies to those orbitals that have appreciable density at the nucleus, such as s and p orbitals. These relativistic electrons gain mass and as a consequence, their orbits contract. As these s and (to some degree) p orbits are contracted, the other electrons in d and f orbitals are better screened from the nucleus and their orbitals actually expand.
Since the 6s orbital with one electron is contracted, this electron is more tightly bound to the nucleus and less available for bonding with other atoms. The 4f and 5d orbitals expand, but can't be involved in bond formation since they are completely filled. This is why gold is relatively unreactive.
Hope it helps
Gold is relatively inert metal because, the one valence electron in 6s orbital is not available for bonding since it is more attracted by nucleus. The 4f and 5d orbitals are completely filled and does not involve in bonding.
What is inertness ?Some elements tends to be unreactive compared to the other by their extra stability factors. This unreactness is called inertness. The 18th group elements are all inert since they are highly stable due to completely filled electronic configuration.
Gold is 79th element in periodic table. It is a transition metal located in d-block. The electronic configuration of gold is [Xe] 4f¹⁴ 5d¹⁰ 6s¹. There is only valence electron which is in the 6s orbital.
The 4s orbital experience more nuclear pull which leads to the unavailability of the valence electron. The 4f and 5d orbitals are completely filled and does not involve in chemical bonding. That's why gold is called inert metal.
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Which statement best describes insoluble substances? Insoluble substances remain the same when in water. Insoluble substances become part of the liquid substance. Water does not remain when an insoluble substance is added. Insoluble substances change from solid to liquid states.
Answers
Answer:
Insoluble substances remain the same when in water.
Explanation:
When a substance is regarded as insoluble, it means that the substance remains the same in water.
Soluble substances usually form one continuous phase with water when they are added to water (eg when salt is added to water).
However, when camphor is added to water, it does not form a single phase with water. It remains the same in the water and maintains a separate phase from the water. Hence camphor is an insoluble substance.
Explain whether smoke filling up a room is diffusion or not.
Answers
Answer:
It is diffusion
Explanation:
Diffusion occurs when particles move from relatively high concentration to relatively low
Answer:
it is diffusion
Explanation:
smoke rises from one corner of the room and spreads to the rest of the room, resulting in diffusion
If the pressure of container 1 of gas molecules = 2 atm, and the pressure of container
2 of gas molecules = 5 atm, then combining the 2 containers of gas into a 3rd
container would result in a combined pressure n the 3rd container of atm.
=
Answers
The pressure of the 3rd container will be 7 atm by combining the 2 containers of gas into a 3rd.
Pressure is the name given to the force acting on such a unit area of such a surface. It operates perpendicular to the surface being applied pressure on. Pressure is a force and the space that it acts in.
The standard unit measuring pressure would be a pascal (Pa). Given that a pascal was an extremely small measure of pressure, the kilopascal represents the most appropriate measurement for commonplace gas pressures (kPa). 1000 pascals make up one kilopascal. The atmosphere can be another frequently used measurement of pressure (atm)
The given data is:
P1 = 2atm
P2 = 5 atm
P3 = ?
The precure of 3rd container will be P3 = p1 +p2 = 3 atm +2 atm = 5atm
Thus, pressure, will be 7 atm.
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Help please !!!!!!!!!!!!!!!!
Answers
9.answer is 0¯²
10.answer is I¯
11. answer is AI+³
12.answer is Cs+
13.answer is Fe+²
14.answer isCI¯
what is a big plants
In the world
who can say
I want a answer
Answers
Answer:
Jupiter
Explanation:
Fifth in line from the sun, Jupiter is, by far, the largest planet in the solar system.
The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?
A The force of the air resistance on the moving hammer
B The force of the person using the hammer
C The force of gravity pulling down on the hammer
D The force of the nail pushing in the opposite direction
Answers
Answer:
A
Explanation:
In simple terms: Hammer goes one way, air goes the other way.
Answer:
d
Explanation:
i took the test
a sample of 500 oxygen atoms contains a mixture of 20o (20.0040754 amu) and 23o (23.01570 amu). the weighted average of oxygen atoms 22.76272353 amu. how many 20o atoms are present in this sample?
Answers
The number of 20o atoms present in the given sample of 500 oxygen atoms is 301.
The weighted average is a measure of central tendency that takes into account the varying weights (or importance) of the different values in a data set. A weighted average is calculated by multiplying each value by its weight and dividing it by the sum of the weights. It is also referred to as a weighted mean or weighted arithmetic mean. The formula for the weighted average is,
weighted average = (w1x1 + w2x2 + w3x3 + … wn xn) / (w1 + w2 + w3 + … wn)
Where,x1, x2, x3, … xn are the values of the individual observations w1, w2, w3, … wn are the respective weights of the individual observations to solve the given problem. A sample of 500 oxygen atoms contains a mixture of 20o (20.0040754 amu) and 23o (23.01570 amu). The weighted average of oxygen atoms is 22.76272353 amu. We have to find how many 20o atoms are present in this sample.
Here,20o atoms have a mass of 20.0040754 amu23o atoms have a mass of 23.01570 amu
The average mass of 500 oxygen atoms is 22.76272353 amu. Therefore,
500 oxygen atoms weigh= 500 x 22.76272353 = 11381.36176 amu.
average atomic mass of oxygen = 20o atoms (20.0040754 amu) and 23o atoms (23.01570 amu)
Atomic mass of oxygen = [(number of 20o atoms x mass of 20o atoms) + (number of 23o atoms x mass of 23o atoms)] / Total number of oxygen atoms
Let's consider a number of 20o atoms to be ‘x’.Therefore, the number of 23o atoms = (500 - x). Substituting the given values in the above formula, we get,
22.76272353 = [(x x 20.0040754) + ((500 - x) x 23.01570)] / 50022.76272353 = (20.0040754x + 11507.825 - 23.01570x) / 50022.76272353 x 500 = 11507.825 - 3.0116246xx = 301.05 ≈ 301Number of 20o atoms = 301.
Hence, 301 number of 20o atoms are present in this sample.
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How many joules of heat are needed to raise the temperature of 15.0 g of
iron from 11°C to 66°C, if the specific heat of iron is 0.45 J/g°C?
Answers
371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.
To solve this problemThe following formula can be used to determine the amount of heat energy needed to raise a substance's temperature:
Q = m * c * ΔT
Where
The heat energy in joules is QThe substance's mass, m, is expressed in gramsc is a substance's specific heat capacity expressed in J/g°CΔT is the change in temperature in degrees CelsiusGiven the following values:
m = 15.0 g (mass of iron)
c = 0.45 J/g°C (specific heat of iron)
ΔT = 66°C - 11°C = 55°C (change in temperature)
Plugging these values into the formula, we can calculate the heat energy (Q):
Q = 15.0 g * 0.45 J/g°C * 55°C
Q = 371.25 J
Therefore, 371.25 joules of heat energy are needed to raise the temperature of 15.0 g of iron from 11°C to 66°C.
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chromium (VI) phosphide
Answers
Answer:
Chromium Phosphide is a semiconductor used in high power, high frequency applications and in laser diodes.
Explanation:
The Periodic table of Elements
When an aqueous solution of silver nitrate is
mixed with an aqueous solution of potassium
chloride which are the spectator ions?
Answers
Answer:
\(K^{+}\) and \(NO_{3}^{-}\)
Explanation:
The equation for the reaction is AgNO3(aq) + KCl(aq) ==> AgCl(s) + KNO3(aq)
With all the ions, it is
\(Ag^{+}\)(aq) + \(NO_{3} ^{-}\)(aq) + \(K^{+}\)(aq) + \(Cl^{-}\)(aq) ==> AgCl(s) +
\(K^{+}\) and \(NO_{3} ^{-}\) do not change, so they are the spectator ions and are removed
The ionic equation is:
\(Ag^{+}\)(aq) + \(Cl^{-}\)(aq) ==> AgCl(s)
Can visible light cause damage that leads to skin cancer
Answers
Visible and infrared light do not cause sunburn and they are not known to directly be a skin cancer risk.
The chemistry teacher decides to use chalk paint to cover a circular portion of a wall
in the science lab. If the greatest distance across the circle is 4 feet, approximately
how big around is the circle?
Answers
The circumference of the circle is approximately 12.57 feet.
What is chalk paint?Chalk paint is a type of paint that is typically used to create a matte, chalky finish on furniture and other surfaces. It is known for its ability to adhere to a variety of surfaces without the need for priming or sanding.
How is the circumference of a circle calculated?The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference, π is approximately equal to 3.14, and r is the radius of the circle (which is half the distance across the circle). So if the greatest distance across the circle is 4 feet, then the radius is 2 feet, and the circumference is approximately 12.57 feet.
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What is the Hall coefficient (RH) in Ccc if the acceptor doping is 4.18∗10∧15/cc, and the donor doping is 9.40∗10∧15/cc ? Three significant figures and exponential notation 1.23e−4
Answers
The Hall coefficient (RH) in this case is approximately -3.01 * 10^-6 C^-1 cc (rounded to three significant figures in exponential notation).
The Hall coefficient (RH) is a parameter used to describe the behavior of charge carriers in a material when subjected to a magnetic field. It is given by the equation RH = 1/(e * p) where e is the elementary charge and p is the total charge carrier density. In this case, we are given the acceptor doping concentration (Na) and the donor doping concentration (Nd) in units of /cc.
To calculate the Hall coefficient, we need to determine the total charge carrier density (p). The total charge carrier density can be calculated as the difference between the acceptor doping concentration and the donor doping concentration: p = Na - Nd.
Given the acceptor doping concentration Na = 4.18 * 10^15/cc and the donor doping concentration Nd = 9.40 * 10^15/cc, we can substitute these values into the equation to find p:
p = Na - Nd
= (4.18 * 10^15/cc) - (9.40 * 10^15/cc)
= -5.22 * 10^15/cc
Now, we can substitute the value of p into the Hall coefficient equation:
RH = 1/(e * p)
= 1/(1.60 * 10^-19 C * (-5.22 * 10^15/cc))
= -3.01 * 10^-6 C^-1 cc
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