The first evidence confirming the crystal structure of matter was
A) the citing of experiments by Nobel Prize-winning scientists.
B) testimonials by crystal-loving investigators.
C) X-ray diffraction patterns.
Answer: C
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An important radiometric dating process is the decay of potassium-40 to ______________-40
Fill in the blank(s) with correct word
The energy usage in the United States in 2010 was about 100 × 10^18 J. This can be written as:
(A) 100 million GJ (B) 1000 million GJ (C) 100 billion MJ (D) 100 trillion MJ
A glass flask has a volume of 500 mL at a temperature of 20° C. The flask contains 492 mL of mercury at an equilibrium temperature of 20°C
The temperature is raised until the mercury reaches the 500 mL reference mark. At what temperature does this occur? The coefficients of volume expansion of mercury and glass are 18 ×10-5 K-1 (mercury) and 2.0 ×10-5 K-1 (glass). A) 120°C B) 110°C C) 100°C D) 140°C E) 130°C
Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do
Indicate whether the statement is true or false