6. when multiplying and dividing measured quantities, the number of significant figures in the result should be equal to the number significant figures a) all of the measurements b) at least and most precise measurements c) the most precise measurement d) the least precise measurement

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al