Điều chế 300ml HCl 15% từ HCl 37% và H2O ( cho dH2O=1 g/cm³, dHCl 37% = 1,19 g/cm³)

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

What is the molar mass of potassium nitrate, kno3

What energy is it when you flip on a switch on a lamp