Five darts strike near the center of the target. Who ever threw the darks is?

phosphorus has an atomic mass of 31 and an atomic number of 15, so the number of nuetrons must be?

Which of these is an example of a chemical change? A fireworks exploding B grinding powder C melting cheese D ironing a shirt

What term describes the process that creates new ocieanic crust at mid ocean ridges

Which of the following elements could be described as least reactive, relative to the other three answer choices? A. Au B. Ca C. Fe D. Mg

The average atomic mass of oxygen is 15.9994 amu. The atomic masses of its three isotopes are as follows: O-16: 15.995 amu; O-17: 16.999 amu; O-18: 17.999 amu Which isotope is most likely to have the greatest abundance in nature?

What is the chemical formula for potassium permanganate?

Is it always possible to identify something as an element compound pure substance or mixture

Why would someone weigh less on Pluto?

HNO3 + H2O > H3O (aq) + NO3 - (aq)

What do you get when you mix lemons with gunpowder