07/31/25

How is temperature, speed, rms speed, average speed, and kinetic energy related? Also, do collisions conserve total speed the way the conserve total kinetic energy?
I've been looking at distributions of molecular speeds and all these terms have been confusing me. Speed and kinetic energy confuse me especially; how does temperature influence them? Any response... more
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07/28/25

How to identify the limiting reactant?
I'm studying chemical reactions involving multiple reactants, and I'm having trouble determining the limiting reactant. For example, if there's a mixture of H₂SO₄ and NaOH reacting together in an... more
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07/25/25

Titration problem
Hello, I am currently studying for the exam I have in a couple days and I was just going through my reviews and came across this titration problem. I could not solve it no matter what, I emailed my... more
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07/22/25

How do you write neutralization reactions backwards (with the reactants as the salt and water)?
For example:NaOCH3 (s) + H2O (l) -->Al4C3 + H2O (l) -->Thank you!!!
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07/17/25

Understanding pH Changes
I'm confused about how buffering works in weak acid/base systems. If I add a small amount of strong acid (like HCl) to a buffer made of acetic acid and sodium acetate, why doesn't the pH drop... more
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07/02/25

help word problem
Two solutions of hydrochloric acid, one 10% and one 55%, are in the possession of chemist Theresa Morgan. To make a hydrochloric acid solution with a 50% acid concentration, how many liters of each... more
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07/01/25

A 10.0 g sample of calcium carbonate (CaCO₃) is heated strongly and decomposes according to the reaction: CaCO3 ( 𝑠 ) → CaO ( 𝑠 ) + CO2 ( 𝑔 ) , what is the theoretical yield of CO2 (in grams)?
a) What is the theoretical yield of CO₂ (in grams)?b) If only 3.21 g of CO₂ is collected, what is the percent yield?c) Explain the role of limiting reactants in this type of decomposition reaction.
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06/20/25

Potentiometric Titration
Generate a titration curve for the titration of 50mL methyl amine (0.02M) with hydrochloric acid (0.02). All calculations with 5mL increment for pre and post equivalence and 0.2 mL increment at 5ml... more
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05/16/25

E °cell combing half reactions
Use the following half-reactions to write three spontaneous reactions. Calculate E °cell for each reaction, and rank the strengths of the oxidizing and reducing agents. (1) Al3+(aq) + 3e- → Al (s) ... more
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04/17/25

Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 19.3°C to 60.0°C.
Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 19.3°C to 60.0°C.
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04/17/25

A sample of Argon has a volume of 4.3 mL at 24°C. At what temperature in degrees Celsius is will it have a volume of 19.3 mL?
A sample of Argon has a volume of 4.3 mL at 24°C. At what temperature in degrees Celsius is will it have a volume of 19.3 mL?
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04/13/25

Find The Empirical Formula
Tetrahydrocannabinol (THC), the active agent in marijuana, contains 80.16% carbon, 9.63% hydrogen, and 10.17% oxygen by mass. What is the empirical formula of THC?
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04/13/25

Benzocaine synthesis: Why are we using both water and methanol?
To purify the product, it will be boiled in water, then hot methanol will be added until the solid just dissolves. The mixture will be allowed to cool, and the product that recrystallizes will be... more
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04/09/25

What would the pH of the solution be if 25.0 mL of 0.250 M NaOH were added?
A solution is prepared by dissolving 15.0 g of pure HC2H3O2 and 25.0 g of NaC2H3O2 in 775 mL of solution (the final volume). The pH of the solution was found to be 4.83. What would the pH of the... more
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04/03/25

Buffers and how they affect pH
What is a buffer?
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04/02/25

Chemistry is not difficult
Help me with this exercise!!!Mix 50 ml of 0.1M HCl solution with 100 ml of 0.2M NaOH solution. Calculate the molar concentration of the ions in the solution after the reaction. Drift... more
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03/25/25

Find pOH with Concentration and Kb
Determine the pOH of a 0.227 M C5H5N solution at 25°C.  The Kb of C5H5N is 1.7 × 10-9If you have hints how to remember these more easily, that would be appreciated. Using pH to find the... more
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03/25/25

Using concentration and Kb to find pH
What is the pH of a 0.050 M triethylamine, (C2H5)3N, solution?Kb for triethylamine is 5.3 × 10–4
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03/25/25

Determine the ammonia concentration of an aqueous solution that has a pH of 11.00.
Determine the ammonia concentration of an aqueous solution that has a pH of 11.00. The equation for the dissociation of NH3 (Kb = 1.8 × 10-5) is  NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq)
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03/25/25

How many grams are in 5.58 x 10^24 formula units of tin (IV) nitrate?
How many grams are in 5.58 x 10^24 formula units of tin (IV) nitrate?
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03/25/25

how many molecules are in 25.5g of iron (iii) hydroxide?
How many molecules are in 25.5g of iron (iii) hydroxide?
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03/23/25

Concentration of all solute species
Calculate the concentration of all solute species in each of the following solutions of saltsin contact with a solution containing a common ion. Show that changes in the initial concentrations of... more
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03/23/25

Finding Ksp Solubility Product
The molar solubility of Ag2SO4 in pure water is 1.4 × 10–2 M. Calculate Ksp.
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03/23/25

pH of Aspirin given pKa
Aspirin pKa of 3.5 Molar Mass = 180.15 g 32oz = 1.0567LCalculate the pH of a solution in which one normal adult dose of aspirin 6.50X 102 mg is dissolved in 8.0 oz of water. I have attempted this... more
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03/23/25

A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Find PH!!!
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3Kb NH3 = 1.8 x 10-5a) pH of the solution before addition of any HNO-b) pH of solution after addition of the 50.0 mL of HNO3
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