What can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron?

energy

mass

neutrons

electrons

What is the pressure in atmospheres of 6.0 moles of an ideal gas if its volume is 2.0 liters and its temperature is at 80.0°C? Record your answer to the nearest atmosphere.

Ethanol (c2h6o) is a common intoxicant and fuel produced from the fermentation of various grains. how many moles of ethanol are represented by 50.0 kg of ethanol?

The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide? Carbon and oxygen are chemically bonded in it.

A bottle of antiseptic hydrogen peroxide (H2O2) is labeled 3.0% (v/v). How many mL H2O2 are in a 400.0 mL bottle of this solution? Use this formula: Percent by volume: volume of solute/volume of solution*100%

Which will ensure laboratory safety during the experiment? Check all that apply. 1. Using beaker tongs to handle the hot beaker 2. Reading the thermometer accurately 3. Checking the beaker for chips prior to heating on the hot plate 4.

One example of possible evidence of chemical reaction

True or False? Urea has a high solutiblity in water, due in part to its ability to form hydrogen bonds

Atomic weight of 20 elements

What information would you need in order to convert Molarity to % by volume

How to determine the charge of a polyatomic ion?