A compound has a gram formula mass of 78 g/mol and an empirical formula of CH. What is its molecular formula?

For example: The solid is not completely submerged in the water. Will this technique error increase, decrease, or have no effect on the reported density of the solid?

As the temperature of a liquid increases, its vapor pressure (1) decreases (2) increases (3) remains the same

Match the term with the example that shows its definition. Molecular composition A) Water has two hydrogen atoms and one oxygen atom Flammability B) Gasoline catches fire Heat of combustion C) High lead levels in a lake kill fish Toxicity D) The

What are the repulsive forces

Why does the electronegativity get smaller as you move from an element with a lower atomic number to an element with a higher atomic number within a group but larger when you move from an element with a lower atomic number to a higher atomic number

If something is in high resolution you can see and object but not very clearly. True or False.

Which change might cause a cold spell in the northern united states

Kipps appratus is for what?

Which of the following statements about protons are true? Protons have twice the mass of neutrons. Protons have the same magnitude of charge as electrons but are opposite in sign. Protons have a charge of 1+.

What is true of an acidic solution at room temperature?