02/15/23

Chemistry HW help
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
Follows • 2
Expert Answers •1

02/15/23

Chemistry HW for class
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
Follows • 2
Expert Answers •1

02/15/23

Chemistry HW for class
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
Follows • 2
Expert Answers •1

02/14/23

Addition or Removal of a Reactant or Product
Some C6H5CH2OH is allowed to dissociate into C6H5CHO and H2 at 523 K. At equilibrium, [C6H5CH2OH] = 0.296 M, and [C6H5CHO] = [H2] = 6.20×10-2 M. Additional C6H5CH2OH is added so that... more
Follows • 2
Expert Answers •1

02/14/23

Consider the possible reaction mechanism below.
A + B ➞ C + D D + B ➞ C a. Show that mechanism is consistent with balanced equation. b. Show which is the rate-determining step (RDS). Explain your choice.
Follows • 2
Expert Answers •1

02/14/23

Assume the rate of disappearance of PH3 is 2.5 x 10^-3 M/s at 20 seconds.

4PH3 (g) ➞ P4 (g) + 6H2 (g)a. What is the rate of appearance of P4 at 20 seconds?b. How will the rate of P4 appearance change (qualitatively) as the reactionprogresses?Justify each answer!
Follows • 2
Expert Answers •1

02/14/23

How many calories does it take to heat 10 grams of ice to 3 degrees C?
Can you explain it to me? I have never learned this and need help with explaining how to do this.
Follows • 2
Expert Answers •1

02/13/23

Enthalpy of a Phase Change
How many grams of ice at -13.4 ∘C can be completely converted to liquid at 19.1 ∘C if the available heat for this process is 4.17×103 kJ? For ice, use a specific heat of 2.01 J g−1 ∘C−1 and... more
Follows • 2
Expert Answers •1

02/13/23

Calculate the boiling point of a solution made by dissolving 0.240 mol naphthalene in 2.45 mol CHCl₃.
For CHCl₃, the normal boiling point is 61.2⁰C. Kb = 3.63 ⁰C/m. The molar mass of CHCl₃ = 119.4 g/mol.
Follows • 2
Expert Answers •1

02/13/23

Questions on Thermodynamics
Given that ΔHo(fusion,0°C) of water is 6025 J/mol, Cp,m(ice) = 37.7 J K–1 mol–1, and Cp,m(water,liquid) = 75.3 J K–1 mol–1, calculate ΔG (in J) for the freezing of 53 moles of water at 1 atm... more
Follows • 2
Expert Answers •1

02/13/23

Making 100-mL of buffer from 0.100 M NaCH3CO2 and 0.100 M HCH3CO2 with a pH of 4.80
Use the Henderson-Hasselbalch equation for this calculation. Pka of acetic acid = 4.74. What is the amount of acid and base required to make a solution with a pH of 4.8.
Follows • 2
Expert Answers •1

02/12/23

When 2.41 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 8.07 ∘C.
Calculate the molar mass of vitamin K.
Follows • 2
Expert Answers •1

02/12/23

(Mass of BHT=8500g) (Mass of cetyl alcohol=0.724g) (Freezing point of BHT=74.01 °C) (Freezing point of BHT/cetyl alcohol solution=71.61 °C)
Use this data to determine 𝐾f for BHT (butylated hydroxytoluene).𝐾f=°C/𝑚?
Follows • 2
Expert Answers •1

02/12/23

For the reaction below, Kc = 1.10 × 10⁻⁸. What is the equilibrium concentration of OH⁻ if the reaction begins with 0.660 M HONH₂? HONH₂ (aq) + H₂O (l) ⇌ HONH₃⁺ (aq) + OH⁻ (aq)
Follows • 2
Expert Answers •1

02/12/23

For the reaction below, Kc = 9.2 × 10⁻⁵. Note Kc is sometimes called K. What is the equilibrium concentration of D if the reaction begins with 0.62 M A? A (aq) + 2 B (s) ⇌ C (s) + 2 D (aq)
Follows • 2
Expert Answers •1

02/12/23

Empirical formula

Complete combustion of 2.50 g of a hydrocarbon produced 8.04 g of CO₂ and 2.74 g of H₂O. What is the empirical formula forthe hydrocarbon? Insert subscripts as necessary.
Follows • 1
Expert Answers •1

02/12/23

Post Lab Question 2
The decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °C is first order in H2O2.H2O2(aq)H2O(l) + ½ O2(g)During one experiment it was found that the H2O2 concentration dropped... more
Follows • 2
Expert Answers •1

02/11/23

Chemical Equilibrium and Spectrophotometric Analysis
We have a mixture of 100 mL of Fe3+ solution (1.00 × 10–3 M) and 100 mL of A- ion solution (1.00 × 10–3 M). The mixture has a deep blue color, indicating the formation of a complex between Fe3+ and... more
Follows • 2
Expert Answers •1

02/11/23

Can I get help on this please?
Intravenous, or IV, solutions used in medicine must exert the same osmotic pressure as blood to prevent a net flow of water into or out of the blood cells. The proper concentration for an... more
Follows • 2
Expert Answers •1

02/11/23

Can I get help on this?
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6⁢H6.At 25⁢ ∘C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made... more
Follows • 2
Expert Answers •1

02/11/23

A solution of H2SO4(aq) with a molal concentration of 5.25 𝑚 has a density of 1.266 g/mL. What is the molar concentration of this solution? Molar concentration=M?
Follows • 2
Expert Answers •1

02/11/23

Calculating Equilibrium Concentrations
Consider the equilibrium system involving the decomposition of hydrogen iodide. 2HI(g) H2(g) + I2(g)     K =  [H2] [I2]  = 2.23×10-2 at 978 K [HI]2 A flask originally... more
Follows • 2
Expert Answers •1

02/11/23

Determining an Equilibrium Constant Using Experimental Data
A mixture of PCl3 and Cl2 is allowed to react at 506 K.PCl3(g) + Cl2(g) PCl5(g)The initial concentration of the reactants are [PCl3] = 0.2060 M and [Cl2] = 0.2340 M. After the system reaches... more
Follows • 2
Expert Answers •1

02/11/23

A solution is made using 79.9 g of phenol (MM = 94.11 g/mol) and 90.0 g of acetone (MM = 58.08 g/mol). What is the molality of the phenol in the solution?
A solution is made using 79.9 g of phenol (MM = 94.11 g/mol) and 90.0 g of acetone (MM = 58.08 g/mol). What is the molality of the phenol in the solution?
Follows • 2
Expert Answers •1

02/11/23

What mass of sodium hydroxide will be required to neutralize completely 1.60 x 10²³ molecules of HCl?
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.