A vertical column of elements in the periodic table is called a ...

The chemical messengers released into the spatial junctions between neurons are called

How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C? A: 1.5 B: 2 C: 22.4 D: 32

How many moles of NH3 are required to produce 12 moles of NH4Cl

Driving along mountain roads you sometimes see signs that say "Watch for falling rocks." This warning is about which type of erosion? gravity wind water glacier

How can you tell if two objects are in thermal equilibrium? A. The objects are touching each other. B. The object's temperatures are changing. C. The object's are the same size. D. The object's have the same temperature.

Which isotope is used to date ancient artifacts such as fossils? carbon-12 carbon-14 uranium-238 oxygen-16

If 8.60 grams of methane gas (hint: remember the fuel for the bunsen burner) is in a 2.00 L container at 66oC, what is the pressure in the container?

Insulator in a sentence, with science.

Aqueous hydrobromic acid reacts with solid sodium hydroxide to produce aqueous sodium bromide and liquid water.

Is calcium fluoride a pure substance, element, compound, or mixture?