Math. tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. what was the total cost of the hats and noisemakers, not including tax?

a. $9.75

b. $8.75

c. $10.70

d. $13.25

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?

Matches the chemical name of each oxide of phosphorus to its chemical formula