How many valance electrons do most atoms need to have a full shell?

A compound has an empirical formula of CHBr2. If it's molar mass is 345.6 grams, what is it's molecular formula

What element has 28 electrons when electrically neutral

A motorcycle engine is 600 cubic centimeters (600 cc). If 1 cm3 equals 1 mL of volume, how many liters are in the motorcycle engine? Give your answer to the correct number of significant figures.

How is clay deposited to form shale?

Energy produced by a change in temperature or vibration of atoms is what energy

For metallic structures, does the packing efficiency (see sample exercise 12.1 in textbook) increase or decrease as the number of nearest neighbors (the coordination number) decreases?

In which reaction is mass converted to energy by the process of fission?

Watch It! #3 After watching the examples in the video of radiation, list 2 other examples that you come up with on your own.

Tear gas has the composition 40.25% carbon, 6.19% hydrogen, 8.94% oxygen, 44.62% bromine. what is the empirical formula of this compound?

Explain why ships traveling from east to west across the Atlantic take days longer than ships traveling the same distance from west to east.