You burn a 0.6 g jellybean to warm 13 g of water, which increases the temperature of the water 7 °C. How many calories of heat are transferred from the jellybean to the water? Assume there is no heat loss. Round your answer to 1 digit past the decimal place.

How does decreasing the gas volume affect the pressure of a gas?

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.