How many moles of dinitrogen tetroxide (N2O4) are in 6.49 x 109 particles? 1.08 x 10–14 mol N2O4

3.091 x 1033 mol N2O4

6.02 x 1023 mol N2O4

1.08 x 10–23 mol N2O4

Which of these reactions are redox reactions? check all that apply.cd + hcl → cdcl2  + h2cucl2  + na2s → 2nacl + cuscaco3  → cao + co2          2zns + 3o2  → 2zno + 2so2          ch4  + 2o2  → co2  + 2h2o

Why is the melting of ice a physical change ?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.