05/13/22

What is the value of Q and what is the concentration of the Ni2+ ions?
You have a battery composed of the following reaction:Ni(s) + 2 Ag+(aq) → Ni2+(aq) + 2 Ag(s), Ecellº=1.03 V, n = 2 e- If you want to make a cell with an operating potential of 1.05 V, what is the... more
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05/13/22

Calculate the operating potential of the battery produced
While working in the lab, a student was designing a battery using the reaction below:Ni(s) + 2 Ag+(aq) → Ni2+(aq) + 2 Ag(s), Ecello=1.03 V, n = 2 e- They wanted to produce a cell with an operating... more
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05/12/22

Zumdahl chemistry Ch. 5.4
Given reaction 2NH3(g) + 3Cl2(g)  N2(g) + 6HCl(g), you react 5.0 L of NH3 with 5.0 L ofCl2 measured at the same conditions in a closed container. Calculate the ratio of pressures inthe container... more
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05/12/22

Calculate the pH of the titration mixture after mL of base added
A 25.0 mL sample of a  0.100 M  solution of acetic acid is titrated with a  0.125 M  solution of NaOH. Calculate the pH of the titration mixture after 10.0, 20.0, and 30.0 mL of base have been... more
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05/12/22

Can someone please answer this
How many grams of KMnO4 are required to make 3 L of a 0.25 M solution?_______ g
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05/12/22

Help me please with the answer

What is the molecular weight of a gas if 372 mL has a mass of .800 g at 100 °C and 800 torr?____unit:______
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05/12/22

SOLVE THE FOLLOWING:
Ethanol burns according to the following equationC2​H5​OH(l)​+3O2(g)​→2CO2(g)​+3H2​O(g)​​ If $15.0g$15.0g​ of ethanol burns, what mass of water will be produced?
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05/12/22

What is [H3O+] and the pH of a solution of H2CO3 with [H2CO3]Total = 4.5 x 10-4 M?
What is [H3O+] and the pH of a solution of H2CO3 with [H2CO3]Total = 4.5 x 10-4 M? (Use the pKa value for H2CO3 given in Problem 3.)  Hint: This is not a buffer. 
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05/11/22

How much energy {in kJ} must be removed when 15 mL of liquid (density= 1.0 g/mol) freezes at 0ºC. Atomic Mass: H= 1.01, O=16.0, molar enthalpy of fusion is 6.009 kJ/mole.
Process and answer is needed!
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05/11/22

Balance each redox reaction using the half-reaction method.
I have two questions, but they are the same type. Zn(s)+Sn2+(aq)→Zn2+(aq)+Sn(s) Mg(s)+Cr3+(aq)→Mg2+(aq)+Cr(s)
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05/11/22

Basic Chemistry

Please do show the complete solution and answer, that's all and thank you. 7.50 g of sodium chloride are added to 3200 mL of water. Find the mole fraction of the sodium chloride and of the water in... more
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05/10/22

Calculate the molar enthalpy of vaporization (in kJ/mole; of a substance if 35.0 g of the substance with molar mass 16.08 p/mol, absorbs 6.411 kJ when it evaporates.
Process and answer is required !
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05/10/22

Chemistry homework

What mass of silver can be produced by the reaction of 2.00 g of zinc metal with 6.00 g of silver (I) nitrate?
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05/10/22

Chemistry homework

If you dilute 175 mL of a 1.6 M solution of LiCl(aq) to 1.0 L, determine the new concentration of the solution?
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05/10/22

calculate the energy released in kj by freezing 13.8g of a liquid. Its molar mass is 82.9 g/mol and its molar enthalpy of fusion is 4.60 kj/mol
Please provide the process and the answer!
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05/10/22

Chemistry homework

Calculate the mass of 3.48 X 1023 molecules of  carbon tetrachloride?
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05/10/22

Acetic Acid Quality Control
a 5.00 ml sample of toilet cleaner weighs 4.902 g. when titrated, those 5.00 ml of the household product need 25.50 ml of naoh 0.506 m for the end point to be reached. a) what is the density of the... more
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05/10/22

What are two skeletal isomers that can be found on the structural formula of dibutyl ether?
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05/09/22

You have 30.285 ml of percholric acid with a concentration of 0.110m,how many ml of of a 0.2000m KOH solution how much do you need to add to completely neutralize the acid.
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05/09/22

Somebody please answer this
Find the molarity of acetic acid prepared by diluting 36.2 mL of concentrated (glacial, 17.4 M) acetic acid in a total volume of 50.00 mL.Enter your answer in decimal format to the correct number... more
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05/09/22

Can somebody please answer this question

Calculate the mass percent of a sucrose solution that is made by mixing 7.17 grams of sucrose into water until the solution has a mass of 22.7 grams. Give your answer as a whole number. ______
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05/09/22

How do you do this please help
Calculate the mass of solute (in grams) needed to prepare the following solution.925 mL of 0.25 M Sn3(PO3)4 solution.______unit:______
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05/08/22

Determine E° for a galvanic (voltaic) cell if ∆G° = -5.7 kJ/mol and n = 3. (F = 96,500 J/(V･mol))
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05/07/22

Please someone answer this question

An excess of hydrogen gas reacts with 42.5 g of nitrogen gas. What volume (in liters) of ammonia is produced at STP?3H2   + N2   →   2NH3unit:
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05/07/22

Someone please answer this question

A cylinder of a gas mixture used for calibration of air analyzers in laboratories contains 13.22% oxygen, 23.02% argon, and the remainder helium at a total pressure of 172.74 mmHg. What is the... more
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