What's the difference between distilled water and tap water?

Explain why scientists use shared characteristics to make cladograms.

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom