Which of the following would need resonance structures?

SO2

CH4

O2

CO3-2

Which type of formula provides the most information about a compound?

Which atoms were needed to form the sodium nitrite?

How to indicate how many atoms are in each molecule

A characteristic of ionic solids is that they

Heavy water, D2O (molar mass 20.03) can be separated from ordinary water by the difference in the relative rates of diffusion of the molecules in the gas phase. Calculate the relative rate of diffusion of H2O to D2O. (Atomic weights: O

A 0.642g sample of an unknown gas was collected over water at 25.0°C and 1.04 atm. The collection cylinder contained 151.3 mL of gas after the sample was released. Find the molar mass of the unknown gas.

When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate heat the sound wave is

Which two factors determine sound intensity? A the wave's frequency and speed B the wave's amplitude and the distance from the sound source C the wave's amplitude and speed D the wave's frequency and the distance from the sound source

The electrical wires in your home use what type of circuits? parallel circuits series circuits

In the actual co2 molecule the best description of the number of bonds between c-o atoms is