How much heat, in Joules, is needed to raise the temperature of 150 g of manganese by 22°C? (cmanganese = 0.477 J/g°C)

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.