A sample of sand has a mass of 50.1 g and a volume of 32.7 cm'. Calculate its density in grams per cubic centimeter (g/cm²).

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Building glycogen from glucose molecules is an example of

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory