A 29.7-gram piece of aluminum is sitting on a hot plate. A student accidentally left the hot plate on. The aluminum now is very hot and has to be cooled. You fill a beaker with 250 grams of water. The aluminum is placed in the water. You are curious so you place a thermometer in the beaker. The water warms from 22.3 C to 30.8 C. The C (aluminum) is 0.900 J/gC, and the C (water) is 4.18 J/gC Do you have enough information to calculate the amount of energy transferred in this situation? Explain in 2-3 complete sentences.

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.