You need to know how many positive and negative ions and the formula for the following 2) potassium bromide
3) calcium oxide
4) magnesium sulfide
5) zinc chloride
6) sodium sulfide
7) strontium fluoride
8) lithium oxide
Zn27
9) potassium nitride
10) sodium phosphide
11) aluminum chloride
12) calcium nitride
13) aluminum oxide
14) magnesium phosphide
15) aluminum sulfide

1) this is the structure in the cell nucleus that houses a cell's genetic information

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size