What important molecules of life did Miller and Urey brew up?
A) RNA
B) fatty acids
C) lean acids
D) amino acids
E) antacids
D
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A(n)__________is a sensitive astronomical instrument that measures the brightness of individual objects very precisely
A) photometer B) grating C) charge-coupled device D) array detector
Which of the following is not a pattern of motion in our solar system?
A) Planets all orbit in the same direction. B) Planets all rotate in the same direction. C) Planets all orbit the same direction as the Sun's spin. D) Large planets all have many moons orbiting them.
If a certain sample of an ideal gas has a temperature of 104°C and exerts a pressure of 2.3 × 104 Pa on the walls of its container,
how many gas molecules are present in each cubic centimeter of volume? The ideal gas constant is R = 8.31 J/mol × K and Avogadro's number is NA = 6.022 × 1023 molecules/mol.
A light ray in air strikes a glass surface with an angle of incidence of 
The angle of refraction in the glass is 
What is the speed of light in the glass?
A. 
B. 
C. 
D. 
E. 