How many moles of nitrogen gas are contained in 25.0 L at a pressure of 10.0 atmospheres and 300 K? (Hint: R = 0.08215 L atmimol Kl (Show Ideal Gas Equation: Solve for unknown; Substitute known values, calculate your answer.)

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

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?

How can you write e method for the experiment of separating sand from water by filtration process? 1-materials 2-steps 3-conclusion also the same for the separating process of water and salt by filtration or distillation. quick because i need to finish my hw