I think it’s a or d one of those
Carbon dioxide is released
Consider the reaction
<span>2Al(OH)3(s)→Al2O3(s)+3H2O(l) </span>
<span>with enthalpy of reaction </span>
<span>ΔHrxn∘=21.0kJ/mol </span>
<span>What is the enthalpy of formation of Al2O3(s)? </span>
<span>Substance ΔHf∘ (kJ/mol) </span>
<span>HCl(g) −92.0 </span>
<span>Al(OH)3(s) −1277.0 </span>
<span>H2O(l) −285.8 </span>
<span>AlCl3(s) −705.6 </span>
<span>H2O(g) −241.8</span>
Answer:
1x 10⁴ m or 1000 meters
Explanation:
1 hectometer = 100 meters
10 hectometers = 10 x 100 meters = 1000m
or in scientific form = 1 x 10⁴