A sealed container holds 0.020 moles of nitrogen (N2 ) gas at a pressure of 1.5 atmospheres and a temperature of 290 K. The atomic mass of nitrogen is 14 g/mol.
The Boltzmann constant is 1.38 10-23 J/K and the ideal gas constant is R = 8.314 J/molK = 0.0821 L atm/mol K. The average translational kinetic energy of a nitrogen molecule is closest to
A) 4.0 10-21 J.
B) 10 10-21 J.
C) 6.0 10-21 J.
D) 12 10-21 J.
E) 8.0 10-21 J.
Question 2
An electron is in an infinite square well (a box) that is 8.9 nm wide.
What is the ground state energy of the electron? (h = 6.626 10-34 J s, mel = 9.11 10-31 kg, 1 eV = 1.60 10-19)
A) 0.0048 eV
B) 0.0057 eV
C) 0.0066 eV
D) 0.0076 eV
E) 0.0085 eV
Using a sphygmomanometer to measure blood pressure.
The proportion of men and women with elevated blood pressure or taking hypertension medication incre
Nitrogen fixation
Measuring Systolic Blood Pressure Using the Palpatory Method
Effects of septal defects: (A) normal shunt; no cyanosis; (B) increased pressure in right ventricle; ...
Atmospheric properties include temperature, pressure, and humidity