Question

An effusion cell has a circular hole of diameter 2.50 mm. If the molar mass of the solid in the cell is 260 g mol-1and its vapour pressure is 0.853 Pa at 400K, by how much will the mass of the solid decrease in a period of 2.00 hours?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Science
Chemistry

Physical Chemistry

Related Chemistry Q&A

Find answers to questions asked by students like you.

Q: Please answer both questions!

A: In the elimination reaction of organic compounds, two substituents are removed from the organic comp...

Q: How many moles of each reactant were used in the reaction? (can you explain how to do it) Equation: ...

A: Mole is the amount of the substance that contains the same number of particles or atoms or molecules...

Q: 1. Draw the Line-angle formula Draw the Line-angle formula of  3,7-Diethyl-4-isopropyl-2,2,5-trimeth...

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

Q: a H3 AsO4 (aq) + NaOH(aq) → H3 AsO4 (aq) NaOH(aq)

A: Chemical reaction, a process in which one or more substances, the reactants, are converted to one or...

Q: Draw the monomer unit(s) which can be used to prepare the following polymers.

A: The polymer is made up of small monomer units. The given monomer units are formed by the addition re...

Q: When coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), which is respo...

A: Click to see the answer

Q: 1. A groundwater contains the following constituents: CO2 = 9.6 mg/L Ca2+ = 95.2 mg/L Mg2+ = 25.8 mg...

A: The total hardness (TH) is calculated as follows: TH = Ca+2 concentration×Eq.Wt of CaCO3Eq.Wt of Ca+...

Q: Please answer very soon

A: A hydrated salt is a salt containing water molecules in its crystal structure in a fixed ratio. For ...

Q: Write a balanced nuclear equation for the beta decay of thallium-209.

A: Beta decay Beta decay β- process is a conversion of a neutron into 1 proton and 1 electron. In this ...

Q: Derive the equation: pH + pOH = pKw

A: at 25°c possibility of pH  + pOH = pKw  is true. 

Q: Part C

A: Higher the energy of the molecular orbitals least would be the stability of that orbital.

Q: See image below. Can you please show me how to solve this?

A: It is given that 25mL of acetic acid is titrated with 0.175 M of sodium hydroxide solution and the v...

Q: Question number 40

A: The pure substance which can not be decomposed any further into more simpler substances is known as ...

Q: The NaOH solution was standardized using the following system. The balanced neutralization reaction ...

A: The ratio of moles of solute to the volume of solution in liters is known as concentration.

Q: A serving size of eight cookies contains 7 g of fat, 17 g of carbohydrates, and 8 g of protein. If w...

A: Click to see the answer

Q: Consider the titration of 75 mL of 0.35 M HCl with 0.25 M NaOH. a. What is the pH at the equivalence...

A: a) pH at equivalent point: At equivalent point the solution has only NaCl  So, pH = 7

Q: here is the full question. can you please please not reject it and answer

A: As you have posted multiple subparts in 1 question, hence we are solving the first three subparts fo...

Q: A water sample is collected. The water is in equilibrium with the atmosphere. The KH for CO2 is 10-1...

A: Click to see the answer

Q: Calculate the pH at the points in the titration of 20.00 mL of 0.275 M KOH when (a) 15.00 mL and (b)...

A: When acid and base react, they form salt and water. The chemical reaction is guided by stoichiometry...

Q: List the number of valence electrons for each element and classify each element as an alkali metal, ...

A: Valence electrons are the number of electrons present in outermost shell of an element.

Q: A compound is determined to be 42.01 % carbon, 1.73 %  hydrogen and 56.26 % oxygen by mass. a. empir...

A: Click to see the answer

Q: What is the molecular geometry of the H30* molecule? Enter the name of the shape.

A: Given   The complex ion is H3O+.

Q: Name the following compound:

A: A systematic name is given to an organic compound by IUPAC nomenclature. The set of rules which are ...

Q: What’s the maximum electron

A: Click to see the answer

Q: You are given an unknown mixture containing NaCl and NaHCO3. When you carry out the heating exactly ...

A: Click to see the answer

Q: he structure of 1,2-propadiene (allene) is shown to the right. Q.)Explain the three-dimensional geom...

A: Structure of 1,2-propadiene is given as, 

Q: For the following questions, identify the ions comprising the salt, and then use the expression for ...

A: Hello. Since multiple questions have been posted, the first question shall be only solved in this ca...

Q: Solid aluminum hydroxide reacts with a solution of hydrobromic acid. Write a balanced molecular equa...

A: The Answer of the following question is given as:

Q: A chemist wants to prepare 0.75 M HCI. Commercial hydrochloric acid is 12.4 M. How many milliliters ...

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute remain...

Q: The pKa for the first protonation of nicotine (2) is 8.02. What is the pH and the fraction of molecu...

A: Click to see the answer

Q: A volume of 450 mL syrup (sg = 1.31) is mixed with 350 g of water.  How many mL of syrup should be a...

A: Specific gravity Specific gravity of a substance is the ratio of density of the substance to the den...

Q: Calculate the root mean square speed of helium atoms and nitrogen molecules in m/s at 25°C

A: Click to see the answer

Q: Consider the following reaction: CH4(g) + 2O2(g)= CO2(g) + 2H2O(l) Δ H = −891 kJ Calculate the en...

A: Click to see the answer

Q: A tank containing 20 kg of water at 293.15 K (20°C) is fitted with a stirrer that work to the water ...

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and...

Q: Calculate the ammonia concentration required to initiate the precipitation of Fe(OH)2, from a 0.0030...

A: The solubility product of Fe(OH)2 = [Fe2+][OH-]2 = 1.6×10-14 The concentration of Fe2+ = FeCl2 = 0.0...

Q: There are two steps in the extraction of copper metal from chalcocite, a copper ore. In the first st...

A: A net chemical reaction, represents all the chemical species that are present in a chemical reaction...

Q: The pH at one half the equivalence point in an acid-base titration was found to be  5.63. What is th...

A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...

Q: Write balanced equations for the following reactions

A: (d) Oxidaion state of Ca (s) is 0 and V in VO43- is +5 Balanced Reduction half cell will be obtained...

Q: Predict the products of the following reaction. If no reaction will occur, use the NO REACTION butto...

A: Solid calcium metal reacts with water to produce calcium hydroxide and liberates hydrogen gas.

Q: Which of the signals in the 13C NMR spectrum in Problem 16.65 would appear in the DEPT-90 spectrum? ...

A: The given 13C NMR is of 1-Chloropropane.  The peaks are: ~23 ppm, 25 ppm and 48 ppm. The peak at 77 ...

Q: Determine the energy of a photon with a wavelength of 410 nm.

A: Click to see the answer

Q: Name each compound.

A: The name of the given compounds can be shown below (a) HgCl2 = Mercury chloride (b) IF5 = Iodine Pen...

Q: What is the Molecular formula of 3,7-Diethyl-4-isopropyl-2,2,5-trimethylnonane?

A: Molecular formula denotes  the number of  each atomic species present in a molecule. The given molec...