When an object floats in a liquid, the buoyant force is __________ the weight of the liquid displaced by the object
Fill in the blank(s) with correct word
equal to
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The _________electrode is a 1-molar solution of hydrogen ions (H+ ) in HCl in contact with hydrogen gas at 1 atmosphere of pressure.
Fill in the blank(s) with the appropriate word(s).
A sample of an ideal gas has a volume of 0.00100 
a pressure of 4.50 atmospheres and 
particles. What is the temperature of the gas?
A. 154 K B. 165 K C. 173 K D. 186 K E. 194 K
What is the approximate composition of the interstellar medium (by mass) in our region of the Milky Way?
A) 60% hydrogen, 40% helium B) 70% hydrogen, 28% helium, 2% heavier elements C) 70% hydrogen, 20% helium, 10% heavier elements D) 50% hydrogen, 48% helium, 2% heavier elements
An observation satellite for mapping purposes is placed in a low Earth orbit. In order to see the whole surface of the Earth, which would be the preferred orbit?
a. an equatorial orbit b. a polar orbit c. an orbit inclined 45° to the equator d. It doesn't matter since the Earth turns completely every 24 hours.