The heat of vaporization of a liquid is 1,340 joules per gram. What is the minimum number of joules needed to change 40. 0 grams of the liquid to vapor at the boiling point?.

What’s the scientific notation for the number 6,840,000,000

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?