What is the difference between a positively charged ion and a negatively charged ion

Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese (IV) oxide. 4HCl (aq) + MnO2 (s) ⟶MnCl2 (aq) + 2H2O (l) + Cl2 (g) A sample of 37.7 g MnO2 is added to a solution containing 46.3 g HCl.

Which statement about the gas laws is correct? a. Gay-Lussac's law states that pressure and temperature are directly proportional. b. Charles's law states that n and V are directly proportional. c. No right choice.

Consider successive ionizations of the element Ca. Which ionization would you expect have the largest increase relative to the previous one? A) 2ndB) 3rdC) 4thD) 5thE) 6th

If you need to measure the volume of liquid in a bottle of eye drops, what unit would be the most practical?

Sun - mercury - Venus - Earth what planet follows earth in this sequence? A) Mars B) Neptune C) Pluto D) Saturn

An element which forms an oxide that dissolves in water to form an acidic solution.

Milk of magnesia is a base. What happens when you drink milk of magnesia for an upset stomach? A) It raises the pH of your stomach. Eliminate B) It lowers the pH of your stomach. C) It cleanses the stomach of harmful, painful bacteria.

Which of the following can be classified as an empirical formula? Why? A. S2Cl2 B. C6H10O4 C. Na2SO3

A student records the value 1.5 atm on a data table. The student is measuring what?

How do you percipitate things from solution to telluric acid?