Air is made of seperate molecules of Oxygen, Nitrogen, and Carbon Dioxide. Is the air a pure substance or a mixture? Explain.

How many moles of CuSO4 are used to make 250 ml of a 0.50 M CuSO4 solution? A) 0.002 mol B) 0.125 mol C) 0.319 mol D) 0.795 mol

What are the four characteristics of minerals

Which compound is an acid? A. HNO3 B. NH3 C. C2H4 D. KCl

What is one factor that can increase the salinity of ocean water?

A drop of water from a special dropper is 3ml. How many liters is this this. A (30) B (0.3) C (0.03) D (0.003)

How does a salt bridge improve a battery

Hat information is needed to determine the energy of an electron in a many-electron atom?

Write the formulas for the following compounds: (a) copper (l) cyanide, (b) strontium chlorite, (c) perbromic acid, (d) hydroiodic acid, (e) disodium ammonium phosphate, (f) potassium dihydrogen phosphate, (g) iodine heptafluoride, (h)

Name a complex salt used in silver-playing.

10. In what part of the world might you find Mystery Island (note: you will be given full-credit for simply attempting this question and you will find the actual answer in your teacher's feedback). Do not answer!