Why might a scientist use a magnet and small strainer when investigating the physical properties of a substance? to try and take apart an easily separated liquid solution

to try and take apart an easily separated mixture

to try and create a complex solution for an experiment

to try and separate a difficult solution

Acompound is found to contain 6.1% hydrogen and 93.9% oxygen. find it’s empirical formula.

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

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?