A student determines that 23.1 J of heat are required to raise the temperature of 6.67 g of an Unknown metal from 35.0°C to 42.8°C.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?