11. If the system 2CO(g) + O2(g) = 2CO2(g) has come to equilibrium and then more CO(g) is added, a. [CO2) increases and [02] decreases. c. (CO2) decreases and [O2] decreases.
b. [CO2) increases and [02] increases. d. both [CO2] and [O2] remain the same

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

Which of the following is not true about the atomic model of substances?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.