From this tank at a depth of 35 m? assume thal ui ture remains constant. pl.11 use the ideal gas and van der waals equations to cal- culate the pressure when 2.25 mol h2 are confined to a vol ume of 1.65 l at 298 k. is the gas in the repulsive or attractive region of the molecule-molecule potential? p1.12 a rigid vessel of volume 0.400 m3 containing h2 at 21.25°c and a pressure of 715 × 103 pa is connected to a s ond rigid vessel of volume 0.750 m3 containing ar at 30.15 at a pressure of 203 × 103 pa. a valve separating the two ec- °c

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.