How much heat, in joules, would be required to raise the temperature of 450g of Aluminum from 19.5 degrees Celsius to 31.2 degrees Celsius

What is the standard unit of measure for acceleration?

Stage in which a typical star has completely stopped fusion

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.