Determine the number of nitrate ions in 1.95 mol of nickel (III) nitrate. (For the final answer, must do significant figures) *This is a grade 11 practice question please do not answer in a level above that because I won't understand.*
*Also please show me the solutions so that I know how you got the answer* Thank you for the help because I dont understand how to answer this question

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)