How many grams of n2f4 can be produced from 225g f2?

A container of gas is heated from 250 K to 303 K. What is the new pressure if the initial pressure is 880 kPa? (Assume constant volume).

Which of the following represents 1 mol of phosphine gas, PH3? A) 6.02 x 1023 phosphine molecules B) 34.00 g phosphine gas C) 22.4 L phosphine gas at STP D) all of the above E) none of the above

Magnesium and oxygen are likely to form a covalent bond between them. True or false?

An ionic compound has a slightly negative heat of solution in water. would you expect it to be soluble or insoluble in water?

Which of these is not an official si unit of measure? a. kelvin b. degree celsius c. secondd. liter

zinc metal can be obtained from zinc oxide zno by reacting the oxide with the element carbon the products of the reaction are Zn and CO2 what mass in grams of zinc oxide is needed to react completely with 5.00 mol of carbon

7. What is the maximum number of d orbitals in a principal energy level? 2 5 3 1

Single called organism live in a pond behind school

Which of the following would most likely contain a fossil?

Karen measures the volume of gas at 200 K and 100 kPa. To correct her measurement to standard temperature and pressure (STP), what must she do? A. make a volume correction based on a higher temperature of 273 K B.