1. A weather balloon is filled with 125.0 L of He and launched from sea level (T = 20.0°C, P = 755 torr).
The atmospheric pressure in the eye of a hurricane is found to be 26.6 inches of
mercury, which is equivalent to Earth. If the atmospheric pressure at 30.0 km is
28.0 torr and the temperature is -39.0 °C, what is the volume of the balloon
when it bursts?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat