A solution was formed by combining 25.0 g of solid A with 60.0 mL of distilled water, with the water initially at 21.4oC. The final temperature of the solution was 25.3oC Calculate the heat released as the solid dissolved, qsoln, assuming no heat loss to the calorimeter.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Which of the following is a physical property flammability heat of combustion solubility and toxicity