An unknown gas effuses at a rate 0.667 times the rate of CO2. What is the molar mass of the unknown gas?

Q: A solution of volume 0.500 L contains 1.68 g NH3 (Kb = 1.8 x 10^-5) and 4.05 g (NH4)2SO4. If 0.88 g…

A: Given :  Mass of NH3 = 1.68 g  Mass of (NH4)2SO4 = 4.05 g  Mass of NaOH = 0.88 g  Volume of solution…

Q: When a liquid is in dynamic equilibrium with its vapour at a given temperature, T, which of the…

A: The state of a system in which a reversible reaction is occurring ceases altering the ratio of…

Q: ▾ Part A Ni²+ (aq) + Mn(s)-Ni(s) +Mn³ (aq) Mn (aq) Mn(s)[Ni(s)[Ni+ (aq) Mn(s) Mn (aq)||NP+ (aq)…

A: For a reaction representation, we wrote oxidised part on left that occurs in anode and reduced part…

Q: What mass of water is produced from the complete combustion of 3.70×10−3 g of methane?

A: Given, mass of methane (CH4) react = 3.70 × 10-3 g mass of water (H2O) produced = ? Note: molar mass…

Q: For each system listed in the first column of the table below, decide (if possible) whether the…

A: Answer: Entropy change is the measure of system's disorderliness. In more possible states, system…

Q: CH3CH₂C=CH CEC 1) NaNH2 2) PhCH₂Br Na x H₂ Lindlar's catalyst Br

A: The reactions of alkynes with different species are given. The products and mechanism are given…

Q: The enthalpy of combustion of isooctane (C8H18(l)) is -5461 kJ/mol. From data found in appendix G,…

A:

Q: d. H NH₂ H OH H H b e. HO H ОН H OCH OH H OH H L HN CH ОН Н H

A: These are the building blocks of DNA and RNA

Q: Write the common (not IUPAC) name and standard abbreviation for each molecule. O-DEO ó 0:0-0 o H…

A: The structures given contain base, sugar and phosphate units.

Q: 6. Calculate enthalpy change of the reaction using enthalpy of formation values. Hint: Used Balanced…

A: Given -> ∆H°f(C3H8) = -103.8 KJ/mole  ∆H°f(CO2) = -393.5 KJ/mole  ∆H°f(H2O) = -285.8 KJ/mole

Q: Give the major product(s) of the following reaction. H₂O, H+ OC - ? heat

A:

Q: Use the phase diagram of Substance x below to find the pressure at which the boiling point of…

A: Boiling point: The temperature at which the vapor pressure of the liquid becomes equal to the…

Q: 8. Calcium hydride, CaH₂, reacts with water to form hydrogen gas CaH₂ (s) + 2H₂O(l) → Ca(OH)₂ (aq) +…

A: Given -> CaH2(s) + 2H2O(l) ---> Ca(OH)2(aq) + 2H2(g)  Volume of H2 = 256 L  Pressure of H2 =…

Q: (2.25x10^-2) L of (6.1x10^-2) M HCI is mixed with excess metal A. How many grams of solid ACl₂ were…

A:

Q: If the mass of the baby is 9lb and 8.0 oz, how many kilograms does the baby weigh?

A: The conversion factors are  1 lb =0.453592 kg 1 oz =0.0283495 kg

Q: Draw the dipeptide that results when a peptide bond is formed between the two glycine molecules

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Q: H+ НО. НО. о

A: Given reaction is Fischer esterification reaction.  Carboxyilic acid on reaction with alcohol in…

Q: 16. What is the pH of 10.0 mL of 0.0020 M HCI? ALQ.70 B) 2.70 C) 3.70 D) 5.70 E) 10.0 17. The pH of…

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Q: Chapter 12 Calculating entropy change from reversible heat flow The heat of fusion AH, of…

A: Entropy is the measure of a system's thermal energy per unit temperature that is unavailable for…

Q: Will entropy increase or decrease in the following reactions? Explain? N2(g) + 2O2(g) ------->…

A:

Q: If a sailor exhales 135.0 mL of CO₂ per minute at 22.0°C and 0.830 atm, what mass of sodium peroxide…

A: we have to calculate the moles of sodium peroxide needed per sailor

Q: Determine the cell potential (E) from the following half-cells: Pbo/Pb2+ and Zno/Zn2+ where [Pb2+] =…

A: This is simple problem of electrochemical cell where we have to calculate cell potential and…

Q: A solution contains 8.38×10-³ M potassium hydroxide and 1.36x10-2 M ammonium carbonate. Solid…

A: We need to find the Mn2+ concentration at which carbonate begins to precipitate. Then, we can find…

Q: Click the buttons below to complete the condensed electron configuration for each of the following…

A: we have to determine the condensed electron configuration of the given ions

Q: Macmillan Learning Calculate the molarity of 0.950 mol of Na₂S in 1.20 L of solution. molarity:…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: A 7.00 L tank at 5.4 °C is filled with 3.81 g of sulfur tetrafluoride gas and 11.1 g of dinitrogen…

A: Ideal gas equation is  PV = nRT  Where,  P is pressure of the gas  V is volume n is no. of moles  R…

Q: Assuming an efficiency of 44.30%, calculate the actual yield of magnesium nitrate formed from 122.9…

A: percent yield = actual yield / theoretical yield x 100%.

Q: Calculate Go for the following reaction at 25oC. What is k of reaction? What type of reaction is…

A: Well, we will first calculate the standard gibbs free energy of the reaction. For that first of all…

Q: If 0.312 g of fuel increases the temperature of a calorimeter by 18 °C, and the calorimeter is…

A: we have to calculate the heat of combustion of the fuel per gram

Q: Identify the two major products of the following reaction. Cl₂ (1 equiv.) ? hv Compound A: Compound…

A:

Q: A gas has a volume of 3.45 L, a pressure of 1.47 atm, and a temperature of 24.5 °C. Calculate the…

A:

Q: 25. Of the three compounds below, which would you expect to be more soluble in water than in an…

A: The solubility of a compound depends on the nature of the solute and the solvent. If the nature of…

Q: Arrange the highlighted bonds in the table below in decreasing order of polarity. That is, pick 1…

A: Here, we have to arrange the highlighted bonds in decreasing order of polarity.

Q: A typical chest X ray exposes a patient to an effective dose of 0.05 mSv. A) How many rem is this?…

A: The part A is to convert the given quantity into rem.  Part B is to count number of chest X rays.

Q: When naming spelling counts. You shouldn't capitalize. You should only use parentheses when…

A:

Q: 1. Two identical containers of the same amount and type of ideal gas follow different processes from…

A: The following points can be obtained from the given information: The gas used in both processes is…

Q: The reaction between iron(II) (Fe²+) and dichromate (Cr₂02-) in the presence of a strong acid (H+)…

A: We will use stoichiometry to solve this problem.

Q: Consider the insoluble compound aluminum phosphate, AIPO4. The aluminum ion also forms a complex…

A:

Q: What is the mass (in grams) of 25.00 L of propane vapor (C³H³) at STP? R=0.08314 L-bar/mol.K.

A:

Q: A solution contains 9.69x10-3 M potassium sulfide and 1.48×10-2 M sodium carbonate. Solid cobalt(II)…

A:

Q: How do you find the equilibrium constants value for Na2CO3,NH4Cl,ZnCl2 and KAl(SO4)2. And would they…

A:

Q: Predict the product for the reaction shown. 01 Н NaBH4/CH3OH ОН ОН оговороб 11 ОН ОН IV ОН

A:

Q: A solution contains 1.42×10-2 M ammonium sulfate and 5.66×10-3 M ammonium chromate. Solid barium…

A: Given :  Concentration of ammonium sulfate = 1.42 x 10-2 M  Concentration of ammonium chromate =…

Q: 5. Draw a mechanism for the following reactions (1- a) b) HBr HBr R-O-O-R

A:

Q: Draw a structural formula for 1-bromo-2-pentanol. 0 • Show stereochemistry only if given in the…

A: A structural formula consists of symbols for the atoms which are connected by short lines that…

Q: What are the result of maltose, glucose, starch, agar, sucrose, dextrin on anthrone test? What color…

A: Anthrone test is for carbohydrates.  In this test, carbohydrates converted to furfural in presence…

Q: NOTE: If more than one bond angle is possible, separate each with a space. For example, trigonal…

A: Answer:- This question is answered by using the simple concept of writing the hydridisation of the…

Q: What is the most likely product for the reaction sequence given. Br ОН IV Mg/ether ОН 1. 2. 20 II ОН…

A: In the given question we have to do the following reaction,  the given reaction is grignard…

Q: What is the structure for the final product (D), in the reaction sequence shown? 9 H3C H CH3CH₂CHOH…

A: Well, First two steps are used to prepare for the Grignard reagent. and Grignard reagents are very…

Q: 1.02 g H₂ is allowed to react with 9.57 g N₂, producing 2.49 g NH3. Part A What is the theoretical…

A: Percentage yield of ammonia is 43.34%

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.