General Chemistry Answers

A 400 mL buffer solution was prepared by reacting sodium acetate, CH3COONa, with 1.00 M acetic acid, CH3COOH, with a pH of 4.56 Calculate the mass of CH3COONa required to prepare the solution. Ka CH3COOH= 1.75 x 10-5

Determine the molecular formula of alaxin C5H8nO5 if it's relative molecular Mass is 284

What kind of intermolecular forces act between a chlorine monofluoride molecule and a fluoride anion?

5.One 55 g serving of a particular cereal supplies 270 mg of sodium, 11% of the recommended daily allowance. How many moles and atoms of sodium are in the recommended daily allowance?

Determine the molecular formula of a compound having a simplest formula of CH

and formula mass of 78.

A compound with a molecular mass of 42 is found to contain 85.64% carbon and

14.36% hydrogen by mass. Find its molecular formula.

Calculate the number of moles of NH₃ present in 100 g of NH₃

of the following statements about different elements are true except

Potassium is an alkali metal. Selenium is a metalloid.

Magnesium is an alkaline earth metal. Iodine is a halogen.

Xenon is a noble gas.

give one advantage of using nano particles in sun creams

Explain the chemistry behind the buffer system in blood.