Which pair of ions can form an ionic bond with each other and why?

A) Cu + and Ag+; They are both metal ions.

B) S2 - and O2-; They have like charges.

C) Br - and At-; They are both halogen ions.

D) Li + and Br-; They have unlike charges.

The process of a material going through a change of state from a gas to a liquid is called

Give examples of Elements.

Which combination of elements below will bond ionically and in the same ratio as lithium when it bonds to sulfur? A) carbon and oxygen B) sodium and oxygen C) calcium and nitrogen D) aluminum and chlorine

Calculate the molar mass for citric acid

Which of the following best describes the result of using a catalyst in a chemical reaction? A. The yield of product is increased. B. A more desirable product is often formed. C. A greater amount of heat energy is released by the reaction. D.

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.

In which direction dose the sun appear to move across the sky

Which is the SI unit for pressure? Pa Torr psi inHg

Write a neutralization reaction for each acid and base pair. a. HI (aq) and NaOH (aq) b. HBr (aq) and KOH (aq) c. HNO3 (aq) and Ba (OH) 2 (aq) d. HClO4 (aq) and Sr (OH) 2 (aq)

What is the mole ratio of oxygen to propane (C3H8) in the following equation? C3H8 + 5O2 ➡ 3CO2 + 4H2O 5:1 10:11 10:3 1:10