Calculate the amount of energy required to melt 235 grams of aluminum at its melting temperature of 658°C. Hint: The heat of fusion for aluminum is 10.6 kJ/mol.

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Explain that newton first law, second law and third law of motion?