What mass of sucrose (C12H22O11) should be combined with 461g of water to make a solution with an osmotic pressure of 8.20atm at 305K ? (Assume the density of the solution to be equal to the density of the solvent.)

Caproic acid is composed of C, H, and O atoms. Combusting a 0.450 gram sample of the compound in air produces 1.024 grams CO2 and 0.418 grams H2O. The molecular weight of caproic acid is 116 grams/mol. How can we find the molecular formula for caproic acid? Please show all work

How can you ensure a quantitative transfer of your product during transfer steps? What would be the expected frequency range (in cm-1) of the C=O stretch in 2,4-pentanedoine? Based on the structural differences, what changes would you expect to see in the spectrum of the product?

When 100 mL of an aqueous solution containing 1.0 g of caffeine is extracted with 10 mL of chloroform at room temperature, 0.5 g of caffeine is transferred to the chloroform layer. Calculate the distribution coefficient of caffeine between chloroform and water at room temperature.

The picture below shows two bulbs connected by a stopcock. The 6.00-L bulb contains nitric oxide at a pressure of 0.400 atm, and the 1.50-L bulb contains oxygen at a pressure of 2.50 atm. After the stopcock is opened, the gases mix and react: Determine which gases remain after the reaction goes to completion and calculate their partial pressures. The temperature at the beginnning and the end of the experiment is 22 °C. Which gases are present at the end of the experiment? What are the partial pressures of the gases? If the gas was consumed completely, put 0 for the answer.

Explain the IMFs for the Following and wether they are soluble, insoluble or partially insoluble:

-Acetone and Butanol, acetone and ethanol, acetone and CCl4, acetone and hexane, acetone and H2O

-Butanol and ethanol, butanol and CCl4, butanol and hexane, butanol and H2O

-CCl4 and ethanol, CCl4 and hexane, CCl4 and water

-Ethanol and hexane, and ethanol and H2O

-Hexane and water

calculate the ph of a solution when 15ml of 0.5M naoh is added to 30ml of a 0.8 M benzoic acid (Benzoic acid is a monoprotic acid and has a ka of 6.5 x 10^-5

A student conducted an experiment to determine what factors are important in the rate of a reaction between potassium carbonate and hydrochloric acid. The student diluted 2.000 mL of 4.000 M K2CO3 to 75.00 mL, then combined that solution with 75.00 mL of 2.000 M HCl.

The student tabulated the amount of CO2 gas collected over time and recorded the results in the columns to the left.

1. Use a rearrangement of PV = nRT to solve for the number of moles of CO2 produced. You may assume atmospheric pressure and room temperature. Enter (and fill down) your formula in column C.

This is suppose to be an excel file bt i do not know how to manipulate the formula where I can put it into excel and what information to extract from the problem to use in order to help solve the problem.

HELP PLEASE !!

Which of the following aqueous solutions are good buffer systems? and Why?
.

0.19 M potassium hydroxide + 0.27 M potassium bromide.

0.28 M hydroiodic acid + 0.18 M sodium iodide.

0.30 M ammonia + 0.37 M ammonium nitrate.

0.17 M hypochlorous acid + 0.12 M hydrobromic acid.

0.38 M calcium bromide + 0.30 M barium bromide.

Part A

A solution of water (K_f =1.86 ∘C/m) and glucose freezes at − 4.75 ∘C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ∘C. Express your answer to three significant figures and include the appropriate units.

Part B

A solution of water (K_b =0.512 ∘C/m) and glucose boils at 101.56 ∘C. What is the molal concentration of glucose in this solution? Assume that the boiling point of pure water is 100.00 ∘C.

Express your answer to three significant figures and include the appropriate units.

What is the first f element in the 6^th period to which Hund's rule must be applied when writing the orbital diagram?

Can someone please give me the chemical equation and directions on how to test for each individual solution below and how to tell if my solution has one of each category? So a test for HCl and HNO3 excetera.?

Acid-HCl,HNO3,H2SO4

Base-NaOH, NH3, Na2S

Chloride Salt-NaCl,BaCl2,CuCl2

Nitrate salt-AgNO3,Cu(NO3)2, Fe(NO3)3

Sodium Salt-NaI,Na2SO4,Na2CO3

Cu(II) sulfate exists as a hydrate. It has many practical uses including use as a fungicide and pesticide. When mixed with chromium and arsenic it forms the wood preservative called CCA. CCA was used in pressure treated wood to protect wood from rotting due to insects and microbial agents. Because CCA-treated wood contains toxic heavy metals, its use has been discontinued for home use and children’s play sets.

A chemist is given a sample of the CuSO₄ hydrate and asked to determine the empirical formula of it. The original sample weighed 42.75 g. After heating to remove the waters of hydration, the sample weighed 27.38 g. Determine the formula for this hydrate.

Please show all work!