1. a mixture of salt and iron filings has a mass of 4.5g. a student determined that the iron
filings had a mass of 3.0g during a separation lab. what is the percent composition of
iron in the mixture?

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?