Sodium hydroxide, NaOH, is a strong base, which means that it readily accepts hydrogen ions. What products are formed when sodium hydroxide accepts a hydrogen ion from a water molecule?
A) water and sodium hydroxide
B) sodium hydroxide and hydronium ions
C) sodium ions and hydronium ions
D) sodium ions and water
Answer: A
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A generator has 200 turns of wire on a coil of radius 2.00 cm. What rotational speed is necessary to produce an emf of amplitude 4.50 V if the magnetic field in the region of the coil is 0.180 T?
A. 60.0 rad/s B. 16.0 rpm C. 100 rpm D. 500 rpm E. 950 rpm
A bar magnet is dropped, N pole down, so it falls through a horizontal loop of wire. As it approaches the loop, the induced current (viewed from above) is:
A) clockwise B) counterclockwise C) zero
How much heat is necessary to change 10 g of ice at –20°C into water at 10°C?
a. 0.02 kcal b. 0.2 kcal c. 1 kcal d. 0.08 kcal
As viewed from above or face-on, a ____________ spiral galaxy has many branches and spurs, making the arms less discernible
Fill in the blank(s) with correct word