What is the elment name for the following atoms?

18 protons, 20 neutrons, and 18 electrons

Ashley walks 800 meters along a straight northerly path to school. Upon reaching the school building, she realizes she forgot her lunch and runs home (along the same path) to get it.

If you subtract an objects starting velocity from its final velocity and divide by the time it took to change velocity, what are you finding

What type of bond will form between H and F

Calculate the rate of heat required to bring 7.20 mol/hr of HBr gas from 43.0 degree C to 225.0 degree C at atmospheric pressure.

A gas occupies a volume of 140 ml at 35.0 c and 97 kpa. what is the volume of the gas at stp

The envelope of air that surrounds the earth is called

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)