11/22/22

How to solve this and solution?
A hypothetical molecule, X–Y, has a dipole moment of 1.35 D and a bond length of 175 pm.Calculate the percent ionic character of this molecule.percent ionic character:
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11/22/22

Calculate the amount of americium-241 consumed in a smoke detector (initially containing 4.0000 µg of Am), in micrograms, that has been used for 1.000 year if the half-life is 433 years.
Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a smoke detector (initially containing 4.0000 µg of Am), in micrograms, that has been used for... more
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11/22/22

PLEASE HELP: What mass of phosphorus-32, in milligrams, is left from an original sample of 175 mg of Na₃³²PO₄ after 58.6 days?
Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in studies of nucleic acids. The half-life of phosphorus-32 is 14.3 days. What mass of phosphorus-32, in... more
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11/22/22

Complete and balance the following redox reaction in basic solution CIO2(g) = CIO2-(aq) + CIO3-(aq)
Complete and balance the following redox reaction in basic solutionCIO2(g) = CIO2-(aq) + CIO3-(aq)
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11/21/22

Complete and balance the following redox reaction in the basic solution Pb2+(aq) +IO3- (aq) ----> PbO2(s)+I2(s)
Complete and balance the following redox reaction in the basic solutionPb2+(aq) +IO3- (aq) ----> PbO2(s)+I2(s)
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11/21/22

Complete and balance the following redox reaction in a basic solution. Be sure to include the proper phases for all species within the reaction.
Complete and balance the following redox reaction in a basic solution. Be sure to include the proper phases for all species within the reaction.CIO3-(aq) + C2O42-(aq) → CIO2(g) + CO2(g)
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11/21/22

Can I have help please?
How many minutes are required to deposit 1.35 g Cr from a Cr³⁺(aq) solution using a current of 2.50 A? (F = 96,500 C/mol)
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11/21/22

Can I have help?
Determine the current (in A) to produce 4.00 g Ag when Ag⁺(aq) is electrolyzed for 2.00 h. (F = 96,500 C/mol)
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11/21/22

Can I have help?
How many grams of copper metal can be deposited from Cu²⁺(aq) when a current of 2.50 A is run for 1.55 h? (F = 96,500 C/mol)
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11/20/22

Can I have help with my questions?
At 1120 K, ∆G° = 58.3 kJ/mol for the reaction 3 A (g) + B (g) →2 C (g). If the partial pressures of A, B, and C are 11.5 atm, 8.60 atm, and 0.510 atm respectively, what is the free energy for this... more
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11/20/22

I need help with my chemistry questions
Given ∆H° = -19.4 kJ/mol and ∆S° = +92.3 J/mol･K, determine ∆G° for the phase change CO₂(g) → CO₂(aq) at 25 °C.
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11/20/22

Can you calculate the pH before equivalence, after equivalence, and at equivalence?
An analytical chemist is titrating 50.0mL of a 0.5100M solution of dimethylamine CH32NH with a 0.4000M solution of HNO3. The pKb of dimethylamine is 3.27. Calculate the pH of the base solution... more
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11/20/22

How many mL of a liquid medicine would provide a patient with 2 tbsp bid x 8d?
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11/20/22

If the dose of a drug is 200 mg, how many doses are contained in 10g?
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11/20/22

Calculate the concentration of the Cu2+(aq) solution in the 50.00 mL volumetric flask.
A chemist needs to create a series of standard Cu2+(aq)Cu2+⁢(aq) solutions for an absorbance experiment. For the first standard, he uses a pipet to transfer 10.0010.00 mL of... more
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11/20/22

What is the pH before equivalence, after equivalence, and at equivalence?
A chemist titrates 90.0mL of a 0.8055M dimethylamine CH32NH solution with 0.6459M HNO3 solution at 25°C. Calculate the pH at equivalence. The pKb of dimethylamine is 3.27.Round your answer... more
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11/19/22

ANALYTICAL QUESTION HELP
Determine the molar solubility of copper(I) azide (CuN3CuN3) in a solution with a pH of 10.20. Ignore activities. The Ksp for CuN3 is 4.9×10−9. The Ka for HN3 is 2.2×10−5
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11/19/22

An excess of oxygen reacts with 451.4 g of lead, forming 367.3 g of lead(II) oxide. Calculate the percent yield of the reaction.
An excess of oxygen reacts with 451.4 g of lead, forming 367.3 g367.3 g of lead(II) oxide. Calculate the percent yield of the reaction.
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11/19/22

CHEMISTRY PROBLEM

Given thatΔ𝐻∘f[Cl(g)]=121.3 kJ⋅mol−1Δ𝐻∘f[C(g)]=716.7 kJ⋅mol−1Δ𝐻∘f[CCl4(g)]=−95.7 kJ⋅mol−1calculate the average molar bond enthalpy of the carbon–chlorine bond in a CCl4 molecule.
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11/19/22

How many grams of NaF should be added to 2.00 L of 0.100 M HF to yield a buffer with a pH = 3.50?
How many grams of NaF should be added to 2.00 L of 0.100 M HF to yield a buffer with a pH = 3.50?options given:12.4 g5.56 g2.28 g7.32 gi keep getting 17.96 grams but thats not an option
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11/18/22

with atmospheric P = 691 torr, height in tube 140. mm greater on side of flask torr atm Pascal
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11/18/22

Finding the rate constant. Ap Chem Kinetics. Does the coefficient have any role in changing the rate constant. Specifically Question 1b.

https://docs.google.com/document/d/1QzL1uTbyWNfh3_fEFKRDJx6QbTSP-n2pcDEsqhqMkQI/edit?usp=sharing
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11/18/22

The Bhopal disaster
Use the following reaction to determine how much of each product would be released if 42 000 kg (42 tonnes) of methyl isocyanate reacted with excess water: methyl isocyanate + water → 1,3-dimethyl... more
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11/18/22

Chemistry 1401 Need assistance

A 0.544 g0.544 g sample of steam at 107.6 ∘C107.6⁢ ∘C is condensed into a container with 4.50 g4.50 g of water at 15.3 ∘C.15.3⁢ ∘C. What is the final temperature of the water mixture if no heat is... more
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11/18/22

Separate the redox reaction into its component half‑reactions. 3O2+4Co⟶2Co2O3 Use the symbol e− for an electron.
How would these be split into thier respective half-reactions?
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