What is the most difficult thing in chemistry to learn?

Activated carbon binds to most substances through van der waals or london dispersion forces. how did you use ethanol to confirm that the pollutant had been removed from the water by adhering to the activated carbon?

Handing out brainliest to the correct answer! Orbitals are defined by which of the following? (a) composition (b) energy level (c) number of electrons (d) spin direction

Which of the following techniques is most appropriate for the recovery of solid KNO3 from an aqueous solution of KNO3? A. Paper chromatography B. Filtration C. Titration D. Electrolysis E. Evaporation to dryness

if you read the the liqud volume where the liqud touches the wall of the cylinder rather than at the meniscus

All of the following are true of carbon except which of the following? a. Carbon is the major component of inorganic molecules. b. Carbon is ranked seventeenth in abundance in Earth's crust. c.

A balloon containing 0.0400 mol of a gas with a volume of 500 mL was expanded to 1.00 L. Answer the questions and round answers to nearest hundredth place. Which equation should you use to find the amount of gas added?

Can quadrilateral RSTU be a parallelogram

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

The density of rubbing alcohol is 0.785g/mL at 25 Celsius. Calculate the mass of 15.0 mL of the rubbing alcohol.

Is the universe an isolated system?