Which statement concerning elements is true?
1. different elements must have different numbers of isotopes.
2. different elements must have different numbers of neutrons.
3. all atoms of a given element must have the same mass number.
4. all atoms of a given element must have the same atomic number.

Select the correct answer. you have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. if the house circuit provides 120.0 volts, what is the current through this bulb?

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

Identify a strong intermolecular force of attraction between an alcohol