12/06/21

AP chem stoichometry
If 0.644 grams of an acid was required to neutralize 10.0 mL of 0.800 M NaOH, calculate the molar mass of the acid given it reacts with sodium hydroxide in a 1:2 ratio. (1 ACID : 2 BASE).
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12/06/21

AP chem stochiometry
When 25.0 mL of a solution of 0.200 M NAIO3 was added to acidified iodide ions, the iodine produced reacted with 20.3 mL of Na2S2O3. Calculate the concentration of the Na2S2O3 solution given the... more
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12/06/21

AP chem stochiometry
3.47 grams of hydrated ammonium iron (II) sulfate hexahydrate [FeSO4(NH4)2SO4*6H2O] was dissolved in 200. mL of water. Twenty milliliters (20.0 mL) of this had acid added to it and then reacted... more
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12/06/21

Determining the volume of base needed to titrate

A chemistry student weighs out 0.106 g of ascorbic acid H2C6H6O6, a diprotic acid, into 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with... more
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12/05/21

How many coulombs of charge are necessary to produce 345 g of Al from Al³⁺(aq)? (F = 96,500 C/mol)
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12/05/21

What is the number of coulombs required to electrolyze Au⁺(aq) to produce 1.70 mol Au? (F = 96,500C/mol)
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12/05/21

For the galvanic (voltaic) cell Cd²⁺(aq) + Fe(s) ⟶ Cd(s) + Fe²⁺(aq) (E° = 0.0400 V), what is the ratio [Fe²⁺]/[Cd²⁺] when E = 0.002 V? Assume T is 298 K
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12/05/21

For the electrochemical cell 2 Al(s) + 3 Mn²⁺(aq) ⟶ 2 Al³⁺(aq) + 3 Mn(s) (E° = 0.48 V, [Al³⁺] = 1.0 M), what is the value of E when [ Mn²⁺] = 0.072 M? Assume T is 298 K
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12/05/21

How to solve this chemical equation.

HCH3 COO (aq) + CaCO3 (s) → H2 CO3 (aq) + Ca(CH3 COO)2 (aq) H2 CO3 (aq) → H2 O (l) + CO2 (g)
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12/05/21

For the given reaction, what volume of O2 would be required to react with 4.8 L of PCl3 , measured at the same temperature and pressure? 2PCl3(g)+O2(g)⟶2POCl3(g)

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12/05/21

Calculate Kp for the reaction at this temperature.
At a given temperature, 4.595 atm of F2 and 5.404 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrF is found to be 1.268 atm. F2(g) + Br2(g) ⇌ 2 BrF(g).  
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12/05/21

Which of the following would be a rate law for the reaction?
The proposed mechanism for a reaction is1. A(g) + B(g) ⇄ X(g) Fast2. X(g) + C(g) ⇄ Y(g) Fast3. Y(g) → D(g) SlowWhy is it, rate = k[A][B][C]?
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12/05/21

using avogadros law
Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon dioxide would be produced by this reaction if 2.3 m3 of oxygen were consumed? 
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12/05/21

using molarity to find solute moles and solution volume
Calculate the volume in milliliters of a 0.41 mol/L copper(II) sulfate solution that contains 300. mmol of copper(II) sulfate CuSO4. Round your answer to 2 significant digits.
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12/05/21

Classify each compound as saturated or unsaturated hydrocarbon
CH3CH2C≡CCH3CH3CH2CH3CH3CH=CHCH3CH3CH3a. Saturatedb. unsaturated
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12/05/21

Chemistry : Asid and bes

In an experiment, 25 cm² of 0.1 mol dm-3 sulphuric acid is needed to neutralise 25 cm³ of sodium hydroxide solution. Calculate the concentration of sodium hydroxide solution use in this experiment.
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12/05/21

What is the solubility of AgCl in a solution of 7.53 x 10-2 M MgCl2?
The Ksp of AgCl is 1.63 x 10-10.
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12/05/21

How many grams of NO will be produced from 75.1 g of NO₂ reacted with excess water in the following chemical reaction? 3 NO₂(g) + H₂O(l) → 2 HNO₃(g) + NO(g)
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12/05/21

At what temperature does uranium hexafluoride have a density of 0.8980 g/L at 0.5073 atm?
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12/04/21

using avogadros law

Ammonia gas and oxygen gas react to form water vapor and nitrogen monoxide gas. What volume of water would be produced by this reaction if 9.4 m^3 of oxygen were consumed? Also, be sure your answer... more
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12/04/21

Chemistry: Solubility
I'm having issues writing an equation with the following information. Please help.Beaker A contains: K+ and NO3Beaker B contains: NH4 and Br-Beaker A and B are mixed. A.) If an insoluble salt... more
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12/04/21

using the ideal equation of state
A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 17.0cm wide and 20.4cm high.... more
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12/04/21

DETERMINE IF THE GIVEN QUANTUM NUMBERS ARE VALID
Determine whether the following sets of quantum numbers are valid or not. If valid, identify the atomic orbital being described and explain it briefly. Any explanations would help me a lot because... more
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12/04/21

Coffee Cup Calorimeter Problem
In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase... more
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12/04/21

calculating and using molar mass of diatomic elements
A chemist measures the amount of bromine liquid produced during an experiment. She finds that 2.87 g of bromine liquid is produced. Calculate the number of moles of bromine liquid produced.Round... more
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