what is the mass % of ammonium chloride in a 1.73 m ammonium chloride aqueous solution at 20 °c? density of the solution is

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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