04/17/22

Assume the equivalent weight of an acid is 54.0. Calculate the number of mL of 0.326 M NaOH that would be needed to titrate 0.305 g of the acid.
Follows • 2
Expert Answers •1

04/17/22

How many moles of potassium are required to produce 11.0 moles of H2?
How many moles of KOH are produced if 2804.9 moles of H2O are consumed?2K(s)+2H2O(l)⟶2KOH(aq)+H2(g)
Follows • 2
Expert Answers •1

04/17/22

A pictorial representation of an electronic configuration is shown.
A pictorial representation of an electronic configuration is shown.Give the full electron configuration. Do not use the noble gas abbreviation.electron configuration:___________Name the element,... more
Follows • 2
Expert Answers •1

04/17/22

Thermochemistry

3 MgO + 2 Fe --> 2 Mg + Fe2O3        ΔHrxn=-47,524 kJ/molrxnThe reaction above is utilized by campers to recycle their drinking water by distilling it (heating the water to 105oC steam) and... more
Follows • 2
Expert Answers •1

04/17/22

How many moles of sulfur are contained in a sample of CuSO4 that also contains 3.50 x 1023 oxygen atoms?
Follows • 2
Expert Answers •2

04/17/22

Assuming that there is a concentration of 0.05M HF and 0.0010M of CaCl2 is added, would the precipitate CaF2 form?

Follows • 2
Expert Answers •1

04/17/22

At what temperature does 0.011260 moles of Ne in a 893.7 mL container exert a pressure of 0.799 atm?
Follows • 2
Expert Answers •1

04/16/22

Calculate the amount of heat needed to boil 47.3 g of octane, beginning from a temperature of 1.2 C . Be sure your answer has a unit symbol and the correct number of significant digits.
Follows • 2
Expert Answers •2

04/16/22

An empty steel container is filled with 0.0590 atm of HF. The system is allowed to reach equilibrium. If Kp = 2.76 for the reaction below, what is the equilibrium partil pressure of H2?
2HF (g) = H2(g) + F2(g)
Follows • 2
Expert Answers •1

04/16/22

Identify the species that is oxidized and the species that is reduced in the following reaction, then write the half reactions.
2 Al +  3 Fe2+   ->    2 Al3+ + 3 Fe
Follows • 2
Expert Answers •1

04/16/22

Using the balanced equation, what is the concentration of H2SO4 solution?
In a titration lab, a student finds that 0.0350 L of H2SO4 solution is needed to neutralize 0.0450 L of a 0.150 mol/L NaOH solution. Using the balanced equation, what is the concentration of the... more
Follows • 2
Expert Answers •1

04/15/22

if you have .103g of Mg and react it with 1M of HCl, how many moles are present in the reaction?
chemical equation for the reaction:Mg+2HCl--> MgCl2+H2
Follows • 2
Expert Answers •1

04/15/22

How many individual H atoms are in a sample of C2H4Cl2 that also contains 12.1 grams of chlorine?
I really need help with this question. I have no clue how to put it into a formula that I can solve to get the answer.
Follows • 1
Expert Answers •2

04/15/22

titration - chemistry
To titrate 1.18 g of a dicarboxylic acid COOH-(CH2)n-COOH to the second equivalence point, 25 ml of a 0.80mol/L NaOH solution is needed. What is the value of n?answer is 2
Follows • 2
Expert Answers •1

04/15/22

What is Identity of Acid?
An un‎known 98.0% by m‎ass dip‎rotic acid (i.e. donates two hy‎drogen ions or with a formula of H2A) rea‎gent has a den‎sity of 1.98 g/mL. Asta wa‎nted to deter‎mine the ide‎ntity of the acid. He... more
Follows • 2
Expert Answers •1

04/15/22

chemistry - redox reaction

The same coefficient (X) must be there for Cu and for Cu^2+ in the following equation. XCu + 2NO3^- + 8H^+ → XCu^2+ + 2NO + 4H2OA. X=1 B. X=2 C. X=3the answer is c, X=3.Please explain how to solve... more
Follows • 2
Expert Answers •1

04/15/22

Equilibrium Constant
BaCl2⋅H2O(s) loses water when it is heated in an oven:BaCl2⋅H2O(s)↽−−⇀BaCl2(s) + H2O(g) Δ𝐻∘=63.11 kJ/mol at 25 ∘C Δ𝑆∘=+148 J/(K⋅mol) at 25 ∘C Write the equilibrium constant for this reaction. Find... more
Follows • 2
Expert Answers •1

04/14/22

Copper(II) arsenate has a Ksp of 7.6×10⁻³⁶.Determine the molar solubility of copper(II) arsenate in a solution of 0.10 mol/L sodium arsenate.
The dissolution of solid copper(II) arsenate in aqueous solution at equilibrium is: Cu₃(AsO₄)₂(s) ⇌ 3 Cu²⁺(aq) + 2 AsO₄³⁻(aq). The molar solubility of copper(II) arsenate in pure water is 3.7x10⁻⁸
Follows • 2
Expert Answers •1

04/14/22

What is the molar solubility of AgCl (Ksp = 1.80 × 10⁻¹⁰) in 0.750 M NH₃? (Kf of Ag(NH₃)₂⁺ is 1.7 × 10⁷)
Please answer with the quadratic equation if needed for the problem
Follows • 1
Expert Answers •1

04/14/22

Please help me with chemistry rates calculation.

The data below were collected for the following reaction.                     A (aq) + 2B (aq) → 2C (aq) + D (aq) Run  A (mol/L) B (mol/L) Initial Rate (mol/L.s) 1 0.025 0.050 1.24 x... more
Follows • 2
Expert Answers •1

04/14/22

An 832.8 ng sample of an unknown radioactive substance was placed in storage and its mass

An 832.8 ng sample of an unknown radioactive substance was placed in storage and its mass was measured periodically. After 47 days the amount of radioactive substance had decreased to 104.1 ng. How... more
Follows • 2
Expert Answers •2

04/14/22

Kinetics Chemistry Questions
A kin‎etics experi‎ment was p‎erformed for the f‎ormation of a no‎vel comp‎ound, UNO, f‎rom its react‎ants, Ch‎emicals G, R, A, D, and E. Th‎e first six ru‎ns (Runs 1-6) w‎ere all perfor‎med at 301... more
Follows • 2
Expert Answers •1

04/14/22

Electrochem Questions
Given :Al(s) / Al3+ (10.36 M)// Sn4+(0.086 M), Sn2+(0.54 M)/ PtA. w‎rite the h‎alf cell and o‎ver-all reaction.B. C‎alculate Ecell for the follow‎ing voltai‎c cell. write the h‎alf cell and... more
Follows • 2
Expert Answers •1

04/14/22

An unknown weak base (0.5673 g) was dissolved in 25.0 mL of water and titrated with 0.1876 M HCl. If it took 16.51 mL to reach the equivalence point, what is the molar mass of the weak base?
Follows • 2
Expert Answers •1

04/14/22

What is the molar mass of the weak acid?
An unknown, solid, monoprotic weak acid (253.2 mg) was dissolved in 10 mL of water and titrated using 0.1355 M NaOH. If it took 11.18 mL of the NaOH solution to reach the end point, what is the... more
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.