What does the 2 mean in the formula 5Mg3(PO4)2? There are two elements in magnesium phosphate. There are two molecules of magnesium phosphate. There are two magnesium ions in a molecule of magnesium phosphate. There are two phosphate ions in a molecule of magnesium phosphate.

How have the greenhouse gasses increased from the year 2000 to 2018

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

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *