SERIOUS HELP!!! WILL GIVE BRAINLIEST ANSWER! Calculate the number of moles in each of the following masses:

a. 64.1 g of aluminum sulphate

b. 28.1 g of silicon bromide

c. 0.255 g of sulfur trioxide

d. 850.5 g of zinc hydroxid

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.

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?