When a carboxylic acid reacts with an amine, the products are water and a(n)
a. aldehyde.
b. ester.
c. amide.
d. salt.
e. ketone.
c
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During an adiabatic process, 20 moles of a monatomic ideal gas undergo a temperature change from 450 K to 320 K starting from an initial pressure is 400 kPa. The ideal gas constant is R = 8.314 J/mol ? K
(a) What is the final volume of the gas? (b) How much heat does the gas exchange during this process? (c) What is the change in the internal (thermal) energy of the gas during this process?
A conducting rod (length = 2.0 m) spins at a constant rate of 2.0 revolutions per second about an axis that is perpendicular to the rod and through its center. A uniform magnetic field (magnitude = 8.0 mT) is directed perpendicularly to the plane of rotation. What is the magnitude of the potential difference between the center of the rod and either of its ends?
A. 16 mV B. 50 mV C. 8.0 mV D. 0.10 mV E. 100 mV
Approximately how fast is a person located at the Earth's equator traveling due to the rotation of the Earth?
A) 1,700 km/hr B) 17 km/hr C) 17,000 km/hr D) 170 km/hr E) not moving at all
What are the advantages and disadvantages of Earth having the tilt that it does?