How many grams of iron are needed to completely consume 3.92 L of oxygen gas according to the following reaction at 25 °C and 1 atm? iron (s) + oxygen ( g) iron(II) oxide (s) ___grams iron

Q: Name the following compounds. (Include stereochemical terms where appropriate. Only use cis/trans…

A: There are some basic rules to name an organic compound. First decide the parent chain. Numbers…

Q: You need to prepare 300 mL of a 0.5 M phosphate buffer at pH = 6.8 using solid Na₂HPO4 and 1.0 M…

A:

Q: What is the dominant charge on the side group of Pro at pH = 7? (Report your answer as -1,0, or 1)…

A: Isoelectric point (PI): The isoelectric point (PI) of amino acids with one carboxylic acid and one…

Q: What mass (g) of precipitate is formed when 35.5 mL of 0.184 M Pb(NO3)2 is treated with an excess of…

A: We have to find the mass of the precipitate

Q: A 8.55 g sample of compound that contains only carbon, hydrogen, and oxygen was combusted, and…

A: The number of moles of C in the compound are equal to the moles of CO2 produced on combustion. The…

Q: A 10.39 gram sample of chromium is heated in the presence of excess iodine. A metal iodide is formed…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: A volume of 500.0 mL of 0.140 M NaOH is added to 545 mL of 0.200 M weak acid (K₁ = 8.02 × 10-5).…

A: Here the weak acid and strong base reacts to form buffer. The pH of buffer can be calculated using…

Q: The fraction of lattice points occupied by vacancies in solid zinc at 419 C is 1.95x10^-4 . What is…

A: Given that, Fraction of lattice points occupied by vacancies in solid zinc at 4190C is 1.95×10-4. R…

Q: What is the equilibrium constant, K, for the reaction between NH4+ (Ka = 5.6 x 10-¹0) and OH- at 25…

A:

Q: + A photon of blue light has a frequency of 7.20 x 10¹4 Hz. Calculate the wavelength of this photon…

A: Frequency (v)= 7.20×10^14 hz =7.20×10^14 s^-1Speed of light (c)= 33×10^8 m/s

Q: Each of the insoluble salts below are put into 0.10 M hydrochloric acid solution. Do you expect…

A: The solubility of a sparingly soluble salt is decreased when it comes into the contact with its own…

Q: If a current of 11 A passes through an electrolytic cell for 2.9 hours, how many moles of electrons…

A:

Q: what is the density of carbon tetrahydride at 685 torr and 65°c

A: Given ,Molecule = Carbon tetrahydride Pressure = 685 torrTemperature , T

Q: Calculate the mass in grams of hydrogen chloride produced when 8.5 L of molecular hydrogen measured…

A: The volume of hydrogen gas = 8.5 LThe temperature of hydrogen gas = The pressure of hydrogen gas =…

Q: This reaction has initial concentrations of 2 M CO, 2 M H₂O, and 1 M H₂, and 21.2 M CO₂ CO(g) +…

A: The given reaction is CO(g) + H2O(g) ⇔H2(g) + CO2(g)       Kc =5.3 Calculate the reaction quotient…

Q: What is the value of K for this aqueous reaction at 298 K? A+B=C+D AG= 10.54 kJ/mol K= x10 TOOLS

A:

Q: The average speed of a helium atom at 25 °C is 1360 m-s-1. What is the average wavelength of a…

A: As we know from debroglies wavelength()h = plank's constant m = mass of the atomv = velocity of the…

Q: How many O2 molecules are needed to react with 2.72 g of S?

A: The balanced reaction can be written as follows:The mass of S given = 2.72 g            The…

Q: What is the pH of a solution made by dissolving 8.36 grams of calcium fluoride in enough water to…

A:

Q: Which of the following ions will act as a strong base in water? A) HS B) F C) NO2- D) CIO

A: The objective of the question is to identify the ions that will act as a strong base in water.

Q: Compare the solubility of barium sulfate in each of the following aqueous solutions: 0.10 M Ba(NO3)2…

A: The question is based on common ion effect. It states that the degree of dissociation of a weak…

Q: The nuclide ⁹5Nb decays by beta emission with a half-life of 35.0 days. The mass of a ⁹5Nb atom is…

A: Half life of N95b , t1/2=35.0 days

Q: Give correct detailed Solution with explanation needed of all ..don't give Handwritten answer..give…

A: The question is asking us to identify the most appropriate reactant and product types for the given…

Q: Balance the following chemical equation: Cs₂O(s) + H₂O(1) → CsOH(aq) Cs2O(s) + H₂O(1) → 2CsOH(aq)…

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

Q: Ethyl iodide (C₂H5I) decomposes at a certain temperature in the gas phase as follows: From the…

A: Answer: Power of concentration term in the rate law is the order of reaction with respect to that…

Q: Complete the following table: Some polyatomic ions name hydronium cation sulfate anion chlorate…

A: Ion is species that carries positive or negative charges. Cation is ion that carries positive…

Q: calculate how many grams of glucose (C6H1206) are needed to produce 1.00 L of H2O. Assume the…

A: We have to find the mass of glucose needed

Q: What is the molar solubility of CaF2(s) (Ksp -3.9 x 10-11) in a 0.300 M CaCl2 solution? O 2.80x104 M…

A:

Q: What is the pH of a 0.810 M solution of Ca(NO2)2 (Ka of HNO₂ is 4.5 x 10-4)?

A: Given:Concentration of The pH of a solution is determined using the negative logarithm of the…

Q: . Calculate the Molar solubility of PbCO3 in a solution buffered to pH=7.00. Ksp=7.4x10-¹4;…

A: Buffer solution - A buffer solution is an acid or a base aqueous solution consisting of a mixture of…

Q: How many grams of CH,OH (MM = 32.04 g/mol) would need to be added to 400.1 g of water in order to…

A: The freezing point depression of a solution is given by the following equation:ΔT_f = Kf ×…

Q: Use the following data to determine the molar heat of vaporization of chlorine. T (°C) P (mmHg)…

A: Given, (i)  T ( 0C )     -72.3 -39.7 P (mmHg)      15.3 369.3(ii) mass of B5 = 67.94 g

Q: How many grams of Fe(CH₂COO)2 are there in 201 grams of an aqueous solution that is 11.5% (w/w)…

A: For the Fe(CH3COO)2  [Iron(II) acetate]  solution  Mass of solution = 201 g  Mass % of Fe(CH3COO)2…

Q: If 785 mL of 0.350 M AgNO, is added to 405 mL of 0.250 M CaBr2, how many moles of AgBr precipitate…

A: Given reaction:

Q: In a 0.072 M solution of chlorous acid, what percentage of the acid is ionized to the chlorous…

A: The acid dissociation constant is denoted by Ka. High Ka value means it's a strong acid and low Ka…

Q: The pH of an arsenic acid H3ASO4 solution is 4.2. What is the concentration of the arsenate ion…

A: Given that -  pH of H3PO4 (arsenic acid) = 4.2 Dissociation constant of arsenic acid are  Ka1 = 5.6…

Q: What is the concentration of A after 12.7 minutes for the zero order reaction A → Products when the…

A: Integrated Rate Law equation for zero order reaction is [A]t = -kt + [A]o = concentration of…

Q: Nitrogen monoxide and water react to form ammonia and oxygen, like this: 4 NO(g) + 6H₂O(g) 4NH,(9)…

A: The equilibrium constant of a chemical reaction is the ratio of the product of the active masses of…

Q: How much heat (in kJ) is produced by the complete combustion of 52.2 g of CH4? Use 1.01 g/mol for…

A: Given, mass of CH4 = 52.2 g  molar mass of CH4 = ( 1 x 12.0 g/mol + 4 x 1.01 g/mol) = 16.04 g/mol…

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.