4Fe + 3O₂ → 2Fe₂O₃

Iron combines with oxygen to form rust. Given the chemical reaction, how many grams of 4Fe + 3O₂ would produce 10 g of rust?

A) 7 g
B) 10 g
C) 30 g
D) 70 g

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.

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.