We are learning about oxygen hydrogen and carbon dioxide, and the question is:

"in what way are the physical properties of the gases the same? "

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.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li