1. What is the difference between a molecular formula,

structural formula and an electron dot formula?

A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15 degrees Celsius. After 10 minutes of stirring, only a little X has dissolved.

What are three types of evidence that supports sea floor spreading

A friend tells you, because composition does not change during a physical changes, the appearance of a substance does not change. is your friend correct? explain why.

Whay would happen to the reaction rate of a medication if the amount of collisions were increased?

The partial pressure of argon in the atmosphere is 0.00934 atm. Calculate the partial pressure in mmHg andtorr. Round each of your answers to significant digits.

The factor that affects how easily an electron can be removed from an atom is the A. surrounding atoms. B. temperature of the environment. C. size of the atom. D. structure of the atom.

NaCl in roman numerals

A compound has an empirical formula of C2H6. What additional piece of evidence is needed to determine the molecular formula? a. percent composition of carbon b. mass of the sample c. relative numbers of atoms of each element d.

Educated guess about the meaning of the word atom

Which of the following symbols could represent an atom of an element