02/26/21

need chem answer pleaseee
How many milligrams of calcium nitrate are needed to make 0.0629 L of a 2.02 M solution? Supply the answer in scientific notation.
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02/26/21

When iron(II) chloride reacts with silver nitrate, iron(II) nitrate and silver chloride are produced. The balanced equation for this reaction is:
When iron(II) chloride reacts with silver nitrate, iron(II) nitrate and silver chloride are produced. The balanced equation for this reaction is:FeCl2 (aq) + 2AgNO3 (aq) ----> Fe(NO3)2 (aq) +... more
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02/26/21

What precautions do you suggest to preserve iron artifacts from corrosion?
What precautions do you suggest to preserve iron artifacts from corrosion?
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02/26/21

Which conditions accelerate iron corrosion and which ones slow down / hinder it?
Which conditions accelerate iron corrosion and which ones slow down / hinder it?
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02/26/21

Consider the reaction. 2A(g)↽−−⇀B(g)𝐾p=5.93×10−5at 500 K If a sample of A(g) at 3.10 atm is heated to 500 K, what is the pressure of B(g) at equilibrium?
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02/26/21

Coffee Cup Calorimetry: Heat of Solution
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter.In the laboratory a general chemistry student... more
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02/26/21

At a certain temperature, 0.920 mol SO3 is placed in a 2.00 L container.
2SO3(g)↽−−⇀2SO2(g)+O2(g)At equilibrium, 0.120 mol O2 is present. Calculate 𝐾c.
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02/26/21

Bromine monochloride is synthesized using the reaction Br2(g)+Cl2(g)↽−−⇀2BrCl(g)
𝐾p=1.1×10−4 at 150 K A 202.0 L flask initially contains 1.033 kg of Br2 and 1.028 kg of Cl2. Calculate the mass of BrCl, in grams, that is present in the reaction mixture at equilibrium. Assume... more
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02/26/21

How many moles of H 2 SO 4 will react with 471.75 g of NaOH? 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2H 2 O
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02/25/21

calculate the molar mass of benzoyl peroxide
How to calculate the molar mass of benzoyl peroxide
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02/25/21

Chemistry question I need help with, please show your work!

Determine the freezing point of a solution containing 50.0 g of sucrose dissolved in 750. g water; round to the nearest 0.01°C. (Kf for water is 1.86°C/m, and the molar mass of sucrose is 342.3... more
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02/25/21

Chemistry problem
Hello, I have a question about butane or also called C4H10 . I need to write how much oxygen dioxide (Co2) comes out from burning 5.8grams butane. Please help me . Thank you
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02/25/21

college chemistry 1
Complete combustion of  8.60g of a hydrocarbon produced 27.5 g of CO2 and 9.84 g of H2O. What is the empirical formula for the hydrocarbon? Insert subscripts as necessary.
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02/25/21

College Chemistry 1
Leucine is an amino acid with the formula . C6H13NO2 Determine the number of moles of carbon in 94.34g  of leucine.
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02/25/21

Applications of Aqueous Equilibrium (Show work and Answer)
The dissolution process for SrF2 is:SrF2(s) <--> Sr2+(aq) + 2F-(aq) The Ksp for SrF2 = 7.9 E-10. Determine the molar solubility [SrF2]:a. in pure waterb. in 0.20 M NaF solutionc. in 0.20 M... more
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02/25/21

Applications of Aqueous Equilibrium (Show work and Answer)
Calculate the pH of a buffer system made up of 0.15 M CH3NH2 and 0.35 M CH3NH3ClKb = 4.4 E-4
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02/25/21

Applications of Aqueous Equilibrium (Show work and Answer)
Calculate the pH of a buffer system made up of 0.15 M HNO2 and 0.35 M NaNO2Ka = 4.5 E-4
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02/25/21

Applications of Aqueous Equilibrium (Show work and Answer)
At 25oC, 7.9 E-4 g of BaCO3(s) will dissolve in 100. mL of water.a. Write the equation for the dissociation of BaCO3(s) in water.b. Calculate the solubility, in moL/L, of BaCO3(s) in water at... more
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02/25/21

i need answer of this question
Calculate the solubility of zinc (II) hydroxide in a solution maintained at (i) pH= 5.3 (ii) pH= 8.2. Ksp = 2.0 x 10-17
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02/25/21

Determine the volume of hexane in ml that contains 4.206x1022 molecules of hexane.
Determine the volume of hexane in ml that contains 4.206x1022 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.
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02/24/21

Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in 3.0 L container
Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc for the initial set reaction conditions in 3.0 L container: 0.105 M Ni(CO)₄, 32.0 g Ni, and 0.302... more
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02/24/21

Consider the equilibrium system described by the chemical reaction below. If the partial pressures

Consider the equilibrium system described by the chemical reaction below. If the partial pressures at equilibrium of NO, Cl₂, and NOCl are 0.095 atm, 0.171 atm, and 0.28 atm, respectively, in a... more
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02/24/21

Arrhenius Equation
The activation energy for the gas phase decomposition of ethyl chloroformate is 123 kJ.ClCOOC2H5C2H5Cl + CO2The rate constant at 462 K is 5.91×10-4 /s. The rate constant will be _____  /s... more
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02/24/21

Arrhenius equation
The activation energy for the gas phase isomerization of dimethyl maleate is 111 kJ.cis-CH3OOCCH=CHCOOCH3trans-CH3OOCCH=CHCOOCH3The rate constant at 713 K is 9.77×10-4 /s. The rate constant will... more
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02/24/21

Mechanisms: 2nd step
The following mechanism for the gas phase reaction of nitrogen dioxide with carbon monoxide at temperatures above 225 oC is consistent with the observed rate law......step 1.....fast:......NO2 +... more
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