Suppose that 100g of aluminum at 23 degrees C is added to 50g of water at 95 degrees C. Determine the equilibrium temperature of the mixture. Ignore heat loss to the container or the surroundings.

Calculate δe, if the system absorbs 7.24 kj of heat from the surroundings while its volume remains constant (assume that only p-v work can be done). express your answer using three significant figures.

What are the physical properties of gases

What do wind and water do to rocks at the surface?

What is the definition of ecosystem?

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45o to the normal? The refractive index of water is 1.333.

Apply Newton's first law to music playing on the radio.

Is platinum carbonate naturally occurring or human made?

A 230-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,100 A. If the conductor is copper with a free charge density of 8.

A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. Two successive resonant frequencies are heard at 187 Hz and 209 Hz. What is the depth of the well? The speed of sound in air is 344 m/s.

A 0.025-kilogram bullet is fired from a rifle by an unbalanced force of 200. newtons. if the force acts on the bullet for 0.1 second, what is the maximum speed attained by the bullet?