the viewing of a solar eclipse involves a specific relationship between the earth, the sun, and the moon. which of these represents the order you would find these celestial bodies during a solar eclipse?

Calculate the concentration of all species in a 0.165 m solution of h2co3.

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ