A white dwarf generates energy through fusion
a. True
b. False
Indicate whether the statement is true or false
False
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For a 10 mol mixture of air (8 mols nitrogen, N2, and 2 mols oxygen, O2) at 101 kPa, 20ºC, determine the mass concentration and the molar concentration of N2 and O2.
What will be an ideal response?
A container with rigid walls is filled with 4.00 mol of air at 17°C with CV = 2.5R. What is the final temperature of the air if its internal energy is increased by 28 kJ? (R = 8.31 J/mol ? K)
A) 337°C B) 354°C C) 337 K D) 354 K E) 610 K
At which latitude is the noonday Sun overhead only once a year?
a. 10°S b. 23°S c. 4°N d. 30°N
Suppose you have one cubic meter of gold, two cubic meters of silver, and six cubic meters of aluminum. Rank them by mass, from smallest to largest
1.gold, aluminum, silver 2.gold, silver, aluminum 3.aluminum, gold, silver 4.silver, aluminum, gold