77.33 grams of aluminum is heated from 155°C to 175°C. The specific heat of aluminum is 0.921 J/g °C. How much energy is required? Round to the nearest whole number.

Connect the whole numbers on the periodic table to indicate what they represent?

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?

Why is the melting of ice a physical change ?