1) In a double displacement reaction, two ionic compounds in aqueous solutions switch anions to produce two new compounds. Select one:
True
False

2) In a double displacement reaction, if all the reactants and products are aqueous, then there is no reaction.

Select one:
True
False

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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?

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world