According to the Arrhenius theory, basic properties are caused by ______________ ions
Fill in the blank(s) with correct word
hydroxide, or OH-
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A block of ice at 0.000°C is added to a well-insulated 147-g aluminum calorimeter cup that holds 200 g of water at 10.0°C
The water and aluminum cup are in thermal equilibrium, and the specific heat of aluminum is 910 J/(kg?K). If all but 2.00 g of ice melt, what was the original mass of the block of ice? The specific heat of water is 4190 J/(kg?K), its latent heat of fusion is 334 kJ/kg, and its latent heat of vaporization is 2260 kJ/kg. A) 31.1 g B) 35.6 g C) 38.8 g D) 42.0 g E) 47.6 g
In the unified model of active galactic nuclei, the broad line region in an active galactic nucleus is
a. composed of clouds of gas and stars moving at very high orbital velocities near a supermassive black hole. b. composed of a supermassive black hole surrounded by empty space. c. responsible for producing the bright continuous radiation from within the event horizon. d. responsible for the narrow absorption lines seen in Type 2 Seyfert galaxies. e. located far from the core beyond the disk of stars of the galaxy.
Neglecting air resistance, Sammy Smarts on a high ladder releases a ball that strikes the ground with 100 J of kinetic energy. If he were to instead throw the ball straight upward, it will soon reach the ground with a kinetic energy of
A) less than 100 J. B) 100 J. C) more than 100 J.
Consider the four quantum numbers of an electron in an atom, n, l, ml, and ms. The energy of an electron in an isolated atom depends on
A) l, ml, and ms only. B) n only. C) n and l only. D) n, l, and ml only. E) all four quantum numbers.