The atomic number of re is 75. the atomic mass of one of its isotopes is 186. how many neutrons are in an atom of this isotope?

a. 186

b. 111

c. 261

d. 75

The addition of which substance will decrease the solubility of AgNO3 in water? 1) 0.1 M potassium chloride 2) 0.1 M barium chloride 3) 0.1 M sodium nitrate 4) 0.1 M sodium carbonate

According to the law of conservation of energy, what will most likely happen in a closed system? B. Energy will be exchanged, but matter will not be exchanged. C. Energy will be created along with matter. D.

Does toxicity happen with high or low nutrient concentration?

What is the electron-domain (charge-cloud) geometry of ICl5?

Which expression could represent the concentration of a solution? A) 3.5 g B) 3.5 M C) 3.5 mL D) 3.5 mol

How many moles of Mgs203 are in 245g of the compound

A student was trying to obtain lithium by electrolysis of aqueous lithium chloride. Was he successful?

A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.

Is the bonds that cause gaseous Cl2 to become liquid when cooled intramolecular or intermolecular

Describe an example of deposition