When the equation Sb2S3 + HCl ? SbCl3 + H2S is balanced, the total of all the coefficients (both written and "understood") is

a. 10.
b. 14.
c. 9.
d. 12.


d

Physics & Space Science

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A star's apparent magnitude is a measure of

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The design of modern X-ray telescopes depends on:

A) lenses made of germanium. B) the prime focus design, with mirrors made of iron. C) grazing incidence optics. D) achromatic lenses to keep the X-rays in focus. E) the Cassegrain design, with mirrors made of lead.

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Freely falling bodies experience

a. motion with constant velocity. b. motion with zero acceleration. c. motion with constant acceleration. d. motion at a constant speed. e. none of the above

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The coefficient of linear expansion of aluminum is 24 × 10-6K-1 and the coefficient of volume expansion of olive oil is 0.68 × 10-3K-1

A novice cook, in preparation for deep-frying some potatoes fills a 1.00-liter aluminum pot to the brim and heats the oil and the pot from an initial temperature of 15°C to 190°C. To his consternation some olive oil spills over the top. How much? A) 0.11 liters B) 0.12 liters C) 0.13 liters D) 0.14 liters E) 0.15 liters

Physics & Space Science