How many hydrogen atoms are in a cycloalkane with 8 carbons?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which statement can best be concluded from the ideal gas law?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.