Write the condensed (short form) electron configuration for Hf:( Make sure to follow the order following the Aufbau principle. Do not consider exceptions. Do not use superscripts, do not write the brackets on the noble gas. Use the following format Ne – 3s2 ….)
Read DetailsSodium metal can react vigorously with water. How much heat evolved with 15.0 g of metallic sodium are thrown in a bucket of water as determined by the following reaction: Must show your work (scratch paper) to receive credit. 2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g) ΔH°rxn = – 368.4 kJ
Read DetailsUse Hess’s Law and the following data CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) ΔH = −802 kJ CH4(g) + CO2(g) → 2 CO(g) + 2 H2(g) ΔH = + 247 kJ CH4(g) + H2O(g) → CO(g) + 3 H2(g) ΔH = + 206 kJ to determine the ∆H°rxn for the following reaction, an important source of hydrogen gas: 2 CH4(g) + O2(g) → 2 CO(g) + 4 H2(g) Must show your work (scratch paper) to receive credit.
Read DetailsAcetylene (C2H2) torches are typically used for welding applications. How much heat in kJ evolve when 2.35 kg of acetylene are burned in excess oxygen gas? The reaction is given by: Must show your work (scratch paper) to receive credit. 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(l) ΔH°rxn = – 2599.0 kJ
Read DetailsUse the standard enthalpies of formation provided to calculate the change in enthalpy for the reaction below: C3H8(g) + H2(g) → C2H6(g) + CH4(g) ΔH°f (kJ/mol) C3H8(g) -103.85 C2H6(g) – 84.68 CH4(g) – 74.6 Must show your work (scratch paper) to receive credit.
Read DetailsWrite the condensed (short form) electron configuration for Cl:( Make sure to follow the order following the Aufbau principle. Do not consider exceptions. Do not use superscripts, do not write the brackets on the noble gas. Use the following format Ne – 3s2 ….)
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