The specific heat of ice is 2.10 kJ/kg the heat of fusion for ice at 0 is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg and the heat of vaporization of water at 100is 2256 kJ/kg. What is the final equilibrium temperature when 20.0 grams of ice at Error! Hyperlink reference not valid.Error! Hyperlink reference not valid.15.0 is mixed with 5.00 grams of steam at 100

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A. 44.1

B. 48.9

C. 52.7

D. 58.0

E. 65.2

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D. 58.0

Physics & Space Science

When at least two reactants join to form just one product, the reaction is referred to as

The density of air is 1.29 kg/m3. What is the mass of the air inside a room 4.0 m × 3.0 m × 2.0 m?

A) 0.32 kg B) 3.1 kg C) 31 kg D) 1.9 kg E) 19 kg

Fiber optics in a DVD player contain their light by employing total internal reflection. Designers surround the pure glass core with another type of glass, called cladding, that has a different index of refraction from the core. How should you select a cladding?

A. Cladding must have a larger index of refraction than the core B. Cladding must have a smaller index of refraction than the core

A 2.00-m rod of negligible mass connects two very small objects at its ends. The mass of one object is 1.00 kg and the mass of the other is unknown. The center of mass of this system is on the rod a distance 1.60 m from the 1.00-kg mass object

What is the mass of the other object? A) 4.11 kg B) 3.22 kg C) 4.00 kg D) 0.250 kg E) 0.800 kg