What is the partial pressure of He in a balloon that is filled with 0.676 moles of He 0.075 moles of N₂. and 0.085 moles of O₂ to a total pressure of 0.30 atm? (Give your answer to 2 decimal places and no units)

Q: Which of the following statements are true about the NOx cycle? Choose all correct (could have…

A: The Answer to the following question is-

Q: A student initially adds 1.00 mol of A to an empty 1.0 L flask. After 10 minutes, there are 0.74 mol…

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Q: A chemistry student needs 55.0 mL of glycerol for an experiment. By consulting the CRC Handbook of…

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Q: Cl₂OCl₂(g) + ClO2(g) Express your answer as a chemical equation. Identify all of th

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Q: What is the mass, in grams, of 5.98 moles of iron (III) oxide (Fe203)?

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Q: HCI C:Ⓒ

A: Reaction-1: The terminal alkyne anion acts as a base(accepts proton). Hence, the alkyl anion takes…

Q: What is the weight, in pounds, of 5 pints of nitric acid?

A: Given that,  5 pints of nitric acid is given  We need to convert this into pounds

Q: 4. The names below are incorrect. A reasonable molecular formula can be written to correspond to the…

A: Correct IUPAC name can be given by following IUPAC nomenclature rules.

Q: 1- Determine the mass of 6.46 mol of Pb, H₂SO4? 2- Determine the moles in 125.0 grams of nickel,…

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Q: 11.38 mg KI in 101.5 mLof solution         Express your answer using four significant figures.…

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Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: The conversion of units into one form or the other by mathematical operations is called as unit…

Q: Consider this reaction (molecular weights are under each compound): HC=CH + 2 HCI MW = 26 36.5 -->…

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Q: Determine whether it is possible to run the electrolysis reaction below under aqueous conditions.…

A: Answer:- This question is answered by using the simple concept of electrolysis in which electricity…

Q: 1 NC 2 ~ZH 3 Z-I 4 05

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Q: 0.650 L of a 2.6 M KCl solution Express your answer using two significant figures.

A: Molarity of a solution is defined as number of moles of solute dissolved per litre of the solution.…

Q: The equilibrium constant, Kp, for the following reaction is 0.558 at 523 K: C6H₂CH₂OH(g) =C₂H5CHO(g)…

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Q: What is the heat of vaporization, in calories per gram, for water at 20°C?

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Q: Calculate AS values for the following reactions by using tabulated Sº values from Appendix C. (a)…

A: The measure of degree of randomness of a system is measured in terms of entropy. It is a state…

Q: Determine the molarity for the each of the following solution: 1.8 × 104 mg of HCl in 0.075 L of…

A: These two can be calculated using the mathematical expression of molarity, m=n/V  Now we have to…

Q: Solve and express the answer with the correct number of significant figures. 2.1210-2 (1.8x10³)…

A: Given expression is a mathematical expression in which multiplication and devidation rule applied

Q: Assume you have the following unbalanced chemical reaction: H₂ + O2 H₂O If you have four moles of H₂…

A: Given reaction is , H2 + O2 -------> H2O Balanced reaction is, 2H2 + O2 -------> 2 H2O

Q: The molar heat capacities for solid, liquid, and gaseous molecular Cl₂ can be written in the…

A: To find: (a) Use this data to find the entropy content (inJ / k) for molecular chlorine at 200 K, if…

Q: 2.30 mol of an ideal gas with CV,m=5R/2 are transformed from an initial state T=750.K and P=1.65bar…

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Q: Create your own graph (s) will be x axis and y is concentration. You can use MS Excel and interpret…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: The Kohinoor diamond is an 18 carats diamond and has a density of 3.51 g/cm3. 1 Carat = 2.00 x 102…

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Q: a) how many moles of Na3PO4 are in a sample with a mass of 80.11 g? b) how many atoms of oxygen are…

A: a) given, mass of Na3PO4 = 80.11 g moles of Na3PO4 = ?  Note:  molar mass of Na3PO4 = 163.94 g/mol

Q: 2. Consider the following: F2, F2, F₂* A. Draw the molecular orbital diagrams of all the species. B.…

A: According to Moleculer Orbital Theory,  molecular orbitals are formed by the combination of atomic…

Q: For the reaction 2 NO₂(g) ⇌ 2 NO(g) + O₂(g) Kp = 1.11 × 10⁻⁵ at 200 °C. A 2.50 L vessel at 200 °C is…

A: The reaction is :  2 NO2 (g) <==> 2NO (g) + O2 (g) , Kp = 1.11 × 10-5  The initial pressure of…

Q: Discuss how an increase in pressure will affect the solubility of NaCl in water. Allow for the…

A: NaCl is a solid ionic compound that is completely soluble in water which is a liquid solvent.

Q: The oxidation numb O-1, -2, +3. O +1, +2, +7. O-1,-1, +3. O-1, -2, +7. O +1, -2, +7.

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Q: fter dissolving NaOH in water, the final concentration of OH is 4.66x10-6. What is the pOH of this…

A: Sodium hydroxide is strong electrolyte hence it dissociated fully in aqueous solution

Q: Two isotopes of rubidium occur naturally, with 85/37 Rb at 72.17% (84.91 amu) and 87/37 Rb at 27.83%…

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Q: Sulfur ylides react with aldehydes and ketones, but a different product is formed than with a…

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Q: Initially, we have 1,646 mol/L of substance A. What is the concentration of A, at equilibrium, if Kc…

A: For solving the given problem ,we have to use ICE table. Here I represent initial concentration C…

Q: a. Describe, using diagrams if needed, what is meant by two (2) of the following. i. fluorescence…

A: IV. Quantum yield : The efficiency of photochemical reaction is expressed in terms of Quantum…

Q: A chemist prepares a solution of barium chloride (BaCl₂) by measuring out 26.5 μmol of barium…

A: Given  BaCl2 measurement in a volumetric flask  is Number of moles = 26. 5 numol Volume   = 300.mL…

Q: Calculate the number of atoms in a given unit cell depending on the lattice type or unit-cell type

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Q: Problem # 2: Determine the enthalpy of the following reaction: 3Fe₂O3(s) + CO(g) 2Fe₂O4(s) + CO₂(g)…

A: Given, Determine the enthalpy of the following reaction, 3Fe2O3(s) + CO(g) ----> 2Fe3O4(s) +…

Q: How much water should be added to 35 mL of 2.7 M X to create a solution of 1.0 M X?

A: Given : 35 mL of 2.7 M , Initial Volume (V1) = 35 mL Initial molarity (M1) = 2.7 M Final molarity…

Q: Which of the following is the lower energy cyclohexane conformer? A-values: Br = 0.6 kcal/mol;…

A: A question based on stereochemistry of organic reactions that is to be accomplished.

Q: Calculate the kinetic energy of a 2.3 x 104 kg airplane moving at a speed of 266. Round your answer…

A: The mass of airplane, m = 2.3×104 kg  Speed of airplane, v = 266 m/s  Kinetic energy of the…

Q: Provide the structure of (R)-4-octanol. Be careful to indicate proper stereochemistry. Draw the…

A: The structure of an organic compound is written in the following steps: Determine the number of…

Q: What is the empirical formula for a compound containing only carbon, hydrogen and oxygen, that was…

A: Here we are required to find the the empirical formula for a compound containing only carbon,…

Q: A sample of 1000 gm of a material is kept in a rigid 30 L vessel at 50°C. Please refer to the PV…

A: The density of the gas can be defined as the mass of the gas divided by the volume of the gas. The…

Q: Calculate the average atomic mass of sulfur (up to two decimal places) using the information below…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: he gas phase reaction below obeys the rate-law expression rate = K[PCI 5]. At 400 K the specific…

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Q: Which of these pairs are resonance structures? i. ii. 道. H H-C H H H H-C–C–C—C—H H H H H H | H H 一 H…

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Q: For the last five questions: 1. Draw the Lewis Structure of CH3CI (C is the central atom), SBr2,…

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

Q: 3. Give the IUPAC names for the following molecules: CH₂ CH, CH₂ CH-CH₂ b. CH C CH₁ CH₂ CH-CH₂ CH₂…

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Q: Na2CO3 (s) + CO2 (g) + H2O (g) 2NaHCO3 (s)  What mass of sodium bicarbonate (NaHCO3) is produced…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves the…

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.