How to find actual yield when doing an experiment. I weighed filter paper and iron now at the end of the experiment I measured the filterpaper with copper. I am not sure what numbers I use when trying to find actual yield.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.