1.000 L of water at 20.00°C will occupy what volume if it is heated to 80.00°C? Water has a volume expansion coefficient of 210 × 10-6/°C. (Express your answer to 4 significant figures.)
A) 1.600 L
B) 1.326 L
C) 1.013 L
D) 0.9870 L
E) 0.9987 L
Answer: C
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A. 20 J B. 30 J C. 0 J D. 40 J E. 70 J
Suppose we have a box containing an electron with the lowest possible energy E1. Imagine that we slowly squeeze the box, making its length L smaller. What will happen to the electron’s energy? The electron’s energy will
A. Increase. B. Decrease. C. Remain the same.
A star is crossing your meridian right now. When will it cross the meridian next?
A) very close to 23 hours, 56 minutes from now B) very close to 24 hours from now C) one year from now D) It depends on the star's position on the celestial sphere.
Predict the concentration of ammonia in air 5 mm from an interface of vapor ammonia and air if the interface area is 1500 mm^2 and the evaporation rate is found to be 0.002 g/min. Assume the ammonia and air are at 20ºC.
What will be an ideal response?