Which of the following chemical equations corresponds to the standard molar enthalpy of formation of Na2CO3(s)? 2Na(s) + C(s) + 3/2O2(g) → Na2CO3(s)
2Na(s) + C(s) + 3O(g) → Na2CO3(s)
Na2O(s) + CO2(g) → Na2CO3(s)
Na2O2(s) + CO(g) → Na2CO3(s)
Na2(s) + C(s) + 3O(g) → Na2CO3(s)

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number