January 2019 Chemistry Regents Questions 31-40

Match it! Select the correct answer from the pull down...Good luck!

What is the formula for iron(II) oxide?

A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 330. K, this sample has a pressure of 150. kPa and a volume of 3.50 L. What is the volume of this sample at STP?

How many moles of KClO3 must completely react to produce 6 moles of O2?

What is the number of moles of CO2 in a 220.-gram sample of CO2 (gram-formula mass = 44 g/mol)?

The three nuclides, U-233, U-235, and U-238, are isotopes of uranium because they have the same number of protons per atom and

This reaction is classified as a

Diamond and graphite have different properties because they have different

Which statement describes a property of ethanol after being separated from the mixture?