A 0.125g sample of gypsum was titrated to determine the percentage of calcium carbonate with 50 mL of 0.2M HCl. percentage of calcium carbonate was titrated with 50mL of 0.2M HCl. The excess HCl was titrated with 32.12 mL of 0.25M NAOH. Calculate the percent percent calcium carbonate in the gypsum sample.

The balanced chemical equation for this lab is: 3cucl2(aq) + 2al(s) 3cu(s) + 2alcl3(aq) if 10.5 g copper chloride react with 12.4 g aluminum, what is the limiting reactant?

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?

Light waves can move through , but they travel fastest when they move through a(n) .