Zuzana tests a common household substance and finds that it has a pH of 3. What type of substance is in the scenario?

acidic
basic
salt
neutral

Idon’t know how to solve this question

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas