Crude oil is a miscible mixture of liquids that has many uses . During the refining process it is separes and used to produce aviation fuel diesel fuel and gasoline how should scientists separate crude oil based on its physical properties

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

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