Abeaker contains 450g of water at a temperature of 24c, the therman capacity of the beaker is negligible and no heat is gained by, or lost to, the atmosphere. calculate the mass of ice, initially at 0c, that must be mixed with the water so that the final temp of the contents of the beakers is at 8c.

Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Acompound machine is also called a machine. a. force b. simple c. complex d. directional