How to separate a 50:50 mixture  of ethanol  and methanol?

Liquid ammonia and liquid methane have very similar molecular weights but substantially different boiling points. Explain why they are different and why the direction of that difference is as shown in the table below. Compound Formula mol. wt. bp C ammonia NH3 17.0 -33.3 methane CH4 16.0 +164

During an experiment you extract 112 mg of caffeine from a 16g sample of coffee. What is the mass percent of the caffeine? How many 5oz cups of coffee could you drink without going over 500 mg of coffee?

List below three characteristics that a good solvent must satisfy to recrystallize an organic compound that exists in a solid state at room temperature, example: benzoic acid.

Room temperature:   294.0 K Barometric pressure:   770.5 mmHg Vapor of water:   18.6 mmHg Volume of O2 collected:   57.90 mL Density of H2O2:   1.01 g/mL % Composition H2O2:   3.02 % Volume of H2O2 used:   5.00 mL Letter of the unknown solution of H2O2:   B Volume of O2 collected for the unknown:   20.20 mL   corrected barometric pressure. 752 mmHg   Expert, what is a term letter?

1. Give the wet chemical tests (#1-6) that work for KETONES only

Wine goes bad soon after opening because the ethanol (CH3CH₂OH) in it reacts with oxygen gas (0₂) from the air to form water (H₂O) and acetic acid (CH₂COOH), the main ingredient of vinegar. What mass of water is produced by the reaction of 8.9 g of ethanol? Round your answer to 2 significant digits. 08 g x10 ? Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibility Explanation Check X MacBook Pro & X

The following molecule contains an ___ functional group.

2. Why are similar sized organic molecules that contain oxygen atoms more soluble in water than organic molecules that only contain carbon and hydrogen atoms? Give examples to support your explanation

Polyphenols are compounds found in many fruits, vegetables, tea, and wine. Predict the solubility of this polyphenol, gallic acid, in water.