A balloon is filled with 6.5 L of helium gas at 25oC and 1.0 atm. What volume will the balloon have when the temperature is lowered to - 25oC and the pressure is increased to 1.5 atm?

The movement of one body around another is

How many moles are in 594 grams of Pb (NO3) 4

Aqueous aluminum bromide and solid zinc are formed by the reaction of aqueous zinc bromide and solid aluminum. write a balanced chemical equation for this reaction.

Which metal is more active than tin but less active than zinc? Base your answer off the choices

Explain what D and L represent in stereoisomers

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves

Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67*10^{-27} kg.

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2