If a plant worker wants to make 650 grams NHz, how many moles N, are needed?

Which of the following mining methods disrupts the sea floor?

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.

Gymnast always perform on padded mats. how does the mats protect the gymnast