11/09/22

A 22.36 g sample of a substance is initially at 27.7∘C. After absorbing 1319 J of heat, the temperature of the substance is 148.0 ∘C. What is the specific heat capacity of the substance?
0.490 is incorrect,0.49 incorrect, 0.5 incorrect.
Follows • 2
Expert Answers •1

11/09/22

What mass of LP gas is necessary to heat 1.8  of water from room temperature (25.0 ) to boiling (100.0 )?
What mass of LP gas is necessary to heat 1.8  of water from room temperature (25.0 ) to boiling (100.0 )? Liquefied petroleum (LP) gas burns according to the following exothermic reaction:... more
Follows • 2
Expert Answers •1

11/09/22

Calculating for the Calorimeter Constant
15.0 mL of distilled water at 8.0*C was mixed in a calorimeter with 25.0 mL of distilled water at 22.0*C. The final temperature of the mixture was 17.5*C. Determine the calorimeter constant. The... more
Follows • 2
Expert Answers •1

11/09/22

In a 69.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.250.
What is the mass of CH4O?What is the mass of water?
Follows • 2
Expert Answers •1

11/09/22

A solution contains 4.20 g of solute in 13.8 g of solvent. What is the mass percent of the solute in the solution?
Follows • 2
Expert Answers •1

11/09/22

At −11.5 ∘C , a common temperature for household freezers, what is the maximum mass of sucralose (C12H19Cl3O8) you can add to 1.00 kg of pure water and still have the solution freeze?
Assume that sucralose is a molecular solid and does not ionize when it dissolves in water.
Follows • 2
Expert Answers •1

11/09/22

The boiling point of an aqueous solution is 101.36 ∘C. What is the freezing point?
Follows • 2
Expert Answers •1

11/09/22

Calculate the osmotic pressure of a 0.195 M aqueous solution of sucrose, C12H22O11, at 37 ∘C.
Follows • 2
Expert Answers •1

11/09/22

Immunoglobulin G (IgG), formerly called gamma globulin, is a principal antibody in blood serum.
A 0.984 g sample of immunoglobulin G is dissolved in water to make 0.198 L of solution, and the osmotic pressure of the solution at 25C⁢ is found to be 0.821 mbar. Calculate the molecular mass of... more
Follows • 2
Expert Answers •1

11/09/22

When 4.03 g of a nonelectrolyte solute is dissolved in water to make 745 mL of solution at 27 °C, the solution exerts an osmotic pressure of 823 torr.
What is the molar concentration of the solution?How many moles of solute are in the solution?What is the molar mass of the solute?
Follows • 2
Expert Answers •1

11/09/22

If a 0.500 𝑚 aqueous solution freezes at −2.20 ∘C, what is the van't Hoff factor, 𝑖, of the solute?
Follows • 2
Expert Answers •1

11/09/22

Assuming 100% dissociation, calculate the freezing point ( 𝑇f ) and boiling point ( 𝑇b ) of 2.53 𝑚 CaCl2(aq) .
Follows • 2
Expert Answers •1

11/08/22

Buffer solution

Calculate the pH of a buffer that is 0.02M NH3 and 0.03M NH4CI. What is the pH after addition 1ml of 0.1M NaOH to 100 mL of this buffer solution?
Follows • 2
Expert Answers •1

11/08/22

Titration problem

some magnesium carbonate was added to 145 mal of 1.00mol L-1 HCL. When the reaction had finished, the solution was acidic. 25.0mL of 0.500 mol L-1 Na2CO3 solution was required to neutralize the... more
Follows • 2
Expert Answers •1

11/08/22

Chemistry Question
The amount of I−3(aq)I3−(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O2−3(aq)S2O32−(aq) (thiosulfate ion). The determination is based on... more
Follows • 2
Expert Answers •1

11/08/22

Combustion reaction
fuel underwent combustion and 61.64 g of carbon dioxide and 28.39 g of water were produced after the combustion of 20 g of the sample. If the sample contains C and H, what is the sample's... more
Follows • 2
Expert Answers •1

11/08/22

What mass of sodium azide, in grams, is required to produce 112 L of nitrogen gas with a density of 1.26 g/L

A sample of sodium azide (NaN3) is rapidly decomposed. What mass of sodium azide, in grams, is required to produce 112 L of nitrogen gas with a density of 1.26 g/L given this equation 2NaN3 (s) →... more
Follows • 2
Expert Answers •1

11/07/22

How do I do this titration question?

5.00 g of a mixture of solid carbonate in potassium bromide was dissolved in made up to the mark in a 250 mL volumetric flask. 25.0 mL portions of this solution were neutralized by an average of... more
Follows • 1
Expert Answers •1

11/07/22

chemistry homework
How much carbon dioxide is generated when 404 kg of methanol burns perfectly?
Follows • 2
Expert Answers •1

11/07/22

Chemisry problem
How much water is generated when 516 kg of methanol burns perfectly? metanolia palaa täydellisesti?
Follows • 2
Expert Answers •1

11/07/22

How many hours does it take to form 15.0 L of O₂ measured at 750 torr and 30°C from water by passing 4.55 A of current through an electrolytic cell?
Follows • 2
Expert Answers •1

11/07/22

Complete and balance the following redox reaction in acidic solution. Be sure to include the proper phases for all species within the reaction.
ReO4^-(aq)+MnO2(s)==>Re(s)+MnO4^-(aq)
Follows • 2
Expert Answers •1

11/07/22

Complete and balance the following redox reaction in basic solution. Be sure to include the proper phases for all species within the reaction.
Cr2O7^2-(aq)+I2(s)==>Cr^3+(aq)+IO3^-(aq)
Follows • 2
Expert Answers •1

11/07/22

Stock solutions

Need dilutions to make wells with 1,3 and 10ug of protein per well. That means 1,3, 10 ug per 5uL solution.prepare samples of each of these proteins from the stock solutions in sufficient amounts... more
Follows • 2
Expert Answers •1

11/07/22

A cashew is burned in a soda can calorimeter, and heats up 0.245 kg of water by 3.65 °C. The calorimeter was calibrated and had a calorimetry constant of 8.50 kcal/kg･°C.
Given that fat contains 9.00 kcal/g, calculate the mass in g of the fat contained in the cashew. Assume that the cashew is composed primarily of fat.This would be helpful if I could see the steps... 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.