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Match the countries with their respective capitals.

Go to the GradeScope link in the D2L folder under Content->Exam 3 to submit your PDF solutions.  I have uploaded my solution to the submission folder indicated above.

Go to the GradeScope link in the D2L folder under Content->Exam 3 to submit your PDF solutions.  I have uploaded my solution to the submission folder indicated above.

What is the mass percent of sodium in sodium carbonate (Na2CO3)?

The balanced equation for the combination reaction of hydrogen gas and solid iodine is: H2(g) + I2(s) + 52 kJ → 2 HI(g) Is this reaction is exothermic or endothermic? [BLANK-1]. The enthalpy change (∆H) value for this reaction should be indicated with positive or negative sign. [BLANK-2].

Note: Use the Smaller Amount of Product (SAP) approach for this problem. All remaining conversion steps begin with the SAP amount.Octane (C8H18, MM = 114.23 g/mol) is a component of gasoline. Combustion of octane is represented by the following balanced chemical equation2 C8H18(l) + 25 O2(g) → 16 CO2(g) + 18 H2O(g)If a reaction mixture contains 218 g C8H18 and 455 g O2, (a) Identify the limiting reactant and excess reactant based on the SAP math. [4 points](b) How many grams of CO2 are expected to form? [1 point](c) How many moles of H2O are expected to form? [2 points](d) How many grams of excess reactant are consumed in the reaction? [2 points](e) How many grams of excess reactant are left over once the reaction is complete? [1 point]Enter the following in the text box provided and show your full work on scratch paper.(a) Limiting reactant = _____________ (type the chemical formula) and excess reactant = _____________ (type the chemical formula).(b) Mass of CO2 = ______________ g CO2. Enter the value in the text box.(c) Moles of H2O expected to form = ______________ mol H2O. Enter the value in the text box.(d) Mass of excess reagent consumed in the reaction = ______________ g. Enter the value in the text box.(e) Mass of excess reagent left over after the reaction is complete = ______________ g. Enter the value in the text box.

The major intermolecular forces between two water molecules are called ______________________.

The total number of valence shell electrons (VSE) in carbonate ion (CO32–) = _____________.

The element hydrogen has the capacity to form ________.

The balanced equation for the combination reaction of hydrogen gas and solid iodine is: H2(g) + I2(s) + 52 kJ → 2 HI(g) Is this reaction is exothermic or endothermic? [BLANK-1]. The enthalpy change (∆H) value for this reaction should be indicated with positive or negative sign. [BLANK-2].