Question

A. Given the following equation: 2 Al + 6 HCl → 2 AlCl3 + 3H2 If 20.0 mol of Al completely react, how many many moles of hydrogen gas would be produced? NOTE: All numbers located immediately after elemental symbols should be considered subscripts.

6.00 moles

12.00 moles

3.00 moles

30.0 moles

B

1. Given the following equation:
   2 H2 + O2 → 2 H2O
   How many kg of water would be produced from the complete combustion of 800.0 kilograms of hydrogen gas? NOTE: All numbers located immediately after elemental symbols should be considered subscripts.

   		7136 kg
   		7208 kg
   		14420 kg
   		800.0 kg

C.

1. How many valence electrons does the carbonate polyatomic ion have?

   		23
   		22
   		26
   		24

Answer 1

A. 30 moles of H2 whould be produced

B. 7208 kg of H2O whould be produced.

C. 24 valance electrons present in the polyatomic carbonate ion.

Explanation is given below

2 A 391 +6H4 > 2.91cY+344 7 2 mol of All produced a mal of H₂ . so, os s 3x20 mal and ha so, 30 mols of Hy would be produced B . 2H2 + O 24₂ 2 mol of H₂ produced a mol of H₂O so, goo kg of H₂ = 800 mod = 40o mol - Mass 3) So, Hoomop of ho would be produced 40o mal of H₂ a mol = weight a, 50, 400= weight 1 = 72oong so 7208 kg of H₂O would be produced- e Trotz we rust add the valance electrons of each atom involved (24. o-6x9 for - 2 charge and 2 electrony = 18 so, todas 24 valance eledrary Present ON