BALANCE THE FOLLOWING EQUATIONS: 1. Na2CO3 + HCl → NaCl + CO2 + H2O

2. NH4NO2 → N2 + H2O

3. SrBr2 + (NH4)2CO3 → SrCO3 + NH4Br

4. Fe3O4 + H2 → Fe + H2O

5. FeS2 + O2 → Fe2O3 + SO2

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

In as 1°, 2°, 3°, or 4°. be to . : °b: °c: °d: ° : °b: °c: °d: ° : °b: °c: °d: °e: °f: °g: °h: ° : °b: °c: °d: °e: °f: °g: °h: °i: °

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.