05/02/23

Chemistry Homework
A 25.0 mL solution of HBr is neutralized with 16.6 mL of 0.105 M Sr(OH)₂. What is the concentration of the original HBr solution?
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05/02/23

Chemistry Homework
A 15.0 mL solution of Sr(OH)₂ is neutralized with 26.9 mL of 0.350 M HCl. What is the concentration of the original Sr(OH)₂ solution?
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05/02/23

Determine the vapor pressure of a solution at 25°C that contains 76.6 g of glucose (C6H12O6) in 250.0 mL of water (Density of water = 1.0g/mL). The vapor pressure of pure water at 25°C is 23.8 torr
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05/02/23

Find equilibrium constant
Consider the following reaction: CH4(g) + 2 H2S(g) --> CS2(g) + 4 H2(g) A reaction mixture initially contains 0.50 M CH4 and 0.75 M H2S. If the equilibrium concentration of H2 is 0.44 M, find... more
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05/02/23

Molar mass of compound
An aqueous solution of a soluble compound (a nonelectrolyte) is prepared by dissolving 33.2 g of the compound in sufficient water to form 250 mL of solution. The solution has an osmotic pressure of... more
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05/02/23

Missing Kc value
The equilibrium constant is given for two of the reactions below. Determine the value of the missing equilibrium constant.A(g) + 2B(g) --> AB2(g) Kc = 59 AB2(g) + B(g) --> AB3(g) Kc = ? A(g)... more
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05/02/23

Find the Kc value
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [P4O10]e q = 2.000 moles, [P4]eq = 3.000 moles, [O2]eq = 4.000 M P4O10(s) P4(s) + 5 O2(g)
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05/01/23

In a hypothetical reaction, 18.2 L of carbon dioxide is generated in the decomposition of calcium carbonate. What mass of calcium carbonate is decomposed at STP?
CaCO3 (s) ---> CaO (s) + CO2 (g)
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05/01/23

For the following cell combination calculate the standard cell potential and write the overall cell reaction: Cd|Cd2+ and Pb|Pb2+
I don't just want the answers. I want to know the steps and how to do it
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05/01/23

A 616.1 mL with 1.92 g of nitroglycerin (C3H5N3O9) at 441 °C into CO2 (g), H20 (g), N2 (g), and 02 (g). What is pressure? 4C3H5N3O9 (l) 12 CO2 (g) + 10 H2O (g) + 6 N2 (g) + O2 (g)
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05/01/23

If it takes 24.58 mL of a 0.022 M sodium hydroxide solution to titrate 145 mL of an unknown solution of phosphoric acid, what is the concentration of the acid solution?
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05/01/23

How many grams of zinc would you start with if you wanted to prepare 4.05 L of H2 at 240 mm Hg and 25.5 ∘C ?
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05/01/23

What is the expected results

The specific heat of copper is 0.385 J/degree Celsius and the specific heat of silver is 0.235 J/g degrees Celsius if the same amount of heat is added to one gram of each metal at 25degree Celsius... more
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05/01/23

How do I solve this?
Solid sodium reacts with liquid water to form hydrogen gas according to the equation 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g) What is the pressure (in atm) of hydrogen gas in the 20.0 L headspace of... more
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05/01/23

A gas mixture was prepared to contain 50% by mass of O₂ and Ne. When the total pressure of the mixture is 1.50 atm, what is the partial pressure of O₂?
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05/01/23

A gas mixture was prepared to contain 50% by mass of O₂ and Ne. When the total pressure of the mixture is 1.50 atm, what is the partial pressure of O₂?
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04/30/23

Can I get help on this?
Gallium is produced by the electrolysis of a solution made by dissolving gallium oxide in concentrated NaOH(aq). Calculate the amount of Ga(s) that can be deposited from a Ga(III) solution using a... more
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04/30/23

A current of 3.05 A is passed through a Pb(NO3)2 solution. How long, in hours, would this current have to be applied to plate out 9.10 g of lead?
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04/30/23

Consider the following reaction and its Δ𝐺∘ at 25.00 °C. 2Ag+(aq)+Cu(s)⟶2Ag(s)+Cu2+(aq)Δ𝐺∘=−88.66 kJ/mol
Calculate the standard cell potential, 𝐸∘cell, for the reaction.𝐸∘cell=V?Calculate the equilibrium constant, 𝐾, for the reaction.𝐾=?
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04/30/23

Use tabulated electrode potentials to calculate ΔG∘ for the following reaction: 2Na(s)+2H2O(l)→H2(g)+2OH−(aq)+2Na+(aq)
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04/30/23

How much water should be added to 125.16 mL of 18.0 M H2SO4 to prepare a 1.27 M solution?
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04/30/23

Colligative Formula
what formula do I use for finding freezing points?
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04/29/23

Using the data in the table, calculate the rate constant of this reaction. A+B⟶C+D
Using the data in the table, calculate the rate constant of this reaction. (Include Final Units).A+B⟶C+DTrial [𝐀] (𝐌) [𝐁] (𝐌) Rate (M/s)1. 0.250 0.310 ... more
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04/29/23

CaCO3 + 2 HCl --> CaCl2 + H2O + CO2 How much 0.80 M HCl would be needed to dissolve a CaCO3 pearl which weighs 4.0 grams?
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04/29/23

2 HCl + Zn --> ZnCl2 + H2 When you use 25 ml. of 4.0 M HCl to produce H2 gas, how many grams of zinc does it react with? What volume of H2 gas is produced at STP?
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