A chem 1515 student was given a solution of the cations X3 , Y2 , and Z in the form of nitrates. Through a series of tests, she obtained the following information: Reagent X3 Y2 Z
Na2SO4 No Reaction Forms white ppt. Brown ppt. forms
NH4OH No Reaction No Reaction ppt. Dissolves
HCl No Reaction No Reaction White ppt. forms
Na3PO4 White ppt. forms No Reaction No Reaction

The reaction between Z (aq) and Na2SO4 forms a brown ppt.

Required:
Write a balanced chemical equation for all of the reactions which result in the formation of a precipitate

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.

Which statement best explains the relationship between an area is geography and the temperature of its surface water

8. what happens to matter during a chemical reaction