A balloon is filled with 1 mole of helium gas at 100 kPa of pressure and a
temperature of 300 K. What is the approximate volume of the balloon? (The
ideal gas law and gas constant are given below.)
PV = nRT
R=8.314 m. Pa/
mol K

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

What state of matter is ice a. liquid b. element c. solid d. gas