A pepperoni pizza has 2.80 megacalories. Juan eats exactly 1/3 of the pizza. How many kilocalories has he consumed? (One food "calorie" is actually a kilocalorie.)
A) 930 kcal
B) 933 kcal
C) 933.3 kcal
D) 933.33 kcal
E) 933.333 kcal
B
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Prior to the time when Luis and Walter Alvarez proposed that an impact led to the extinction of the dinosaurs, it was generally assumed that the dinosaurs had died out over a period of at least thousands to millions of years. Consider each piece of evidence listed below and sort it into the correct bin based on whether it supports a sudden cause for the demise of the dinosaurs or whether it could also be consistent with a gradual cause leading to their demise over many thousands or more years.
Note: The “K-T sediment layer” refers to the geological layer dating to about 65 million years ago that separates sediments that contain dinosaur fossils from those that do not.
An atom with fewer electrons than protons is a __________
Fill in the blank(s) with correct word
The discovery of electromagnetic induction is credited to
A) Joseph Henry in America. B) Michael Faraday in England. C) both of these D) neither of these
At the equilibrium melting temperature of a solid, if an atom of solid changes to liquid, the change in the Gibbs free energy is equal to:
(a) The heat of fusion. (b) Zero. (c) A negative value. (d) A positive value.