Chondritic meteorites provide important clues because they are believed to
A. contain grains from the first material that condensed out of the Solar nebula.
B. be the only source of the necessary amino acids required for life.
C. be the source of all coal found on Earth.
D. contain many rare metals.
Answer: A
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Which will cool faster when removed from a furnace?
A) iron B) silver C) the same
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C As the ice is melting, the temperature of the ice-water mixture rises by 10°C
Indicate whether the statement is true or false
How many moles of water (H2O) molecules are in a 4.00 m3 container at a pressure 8.00 × 105 N/m2 and temperature 600°C? The ideal gas constant is R = 8.314 J/mol•K = 0.0821 L ? atm/mol ? K
A) 641 mol B) 7.72 × 1026 mol C) 2.65 × 1026 mol D) 3.86 × 1026 mol E) 441 mol
The large envelope of comets that encircle the Sun beyond the outer planets is called the ________ cloud.
Fill in the blank(s) with the appropriate word(s).