Potassium iodide is added to table salt to prevent iodine deficiency and thyroid gland problems. Given their location on the periodic table, identify the ionic charge for each element and predict the chemical formula of the compound formed.

A) Potassium, K, is an alkali metal and is in Group IA with an ionic charge of +1. While iodine, I, is a halogen and is in Group VIIA with a charge of -1. These will form KI(s).
B) Potassium, K, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While iodine, I, is a halogen and is in Group VIIA with a charge of -1. These will form KI2(s).
C) Potassium, K, is an alkali earth metal and is in Group IA with an ionic charge of +2. While iodine, I, is a noble gas and is in Group VIA with a charge of -2. These will form K2I2(s).
D) Potassium, K, is an alkali earth metal and is in Group IA with an ionic charge of +1. While iodine, I, is a diatomic gas and is in Group VIA with a charge of -2. These will form K2I(s).

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Air can be considered a mixture. which statement does not explain why?