<span>Kr has 8 valence electrons plus 1 for each Kr-F single bond. Total = 10 elcetrons
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Answer:
2Al + 6HCl -----> 2AlCl3 + 3H2
Reaction of acid with metals
Cu(OH)2. -----> H2O. + CuO
Dissociation of coper hydroxide / dissociation of base
Explanation:
Answer:
A
Explanation:
Polypeptides such as proline and glycine are capable of making a sharp turn called a reverse turn due to the suitability and flexibility of their cyclic structure
4 moles i believe cos mole = mass/ molar mass
mole =36/9
=4
The balanced chemical equation for the reaction of hexane with O₂ is given below;
2C₆H₁₄ + 19O₂ --> 12CO₂ + 14H₂O
Stoichiometry of hexane to oxygen is 2:19
number of hexane moles - 41 g / 86.2 g/mol = 0.476 mol
number of oxygen moles - 150 g / 32 g/mol = 4.69 mol
we need to find which reagent is the limiting reactant
If hexane is the limiting reactant
2 moles of hexane reacts with -19 mol of oxygen
therefore 0.476 mol - 19/2 x 0.476 = 4.522 mol
since 4.69 mol of oxygen is present, O₂ is in excess and hexane is the limiting reactant.
stoichiometry of hexane to water is 2:14
2 mol of hexane gives 14 mol of water
therefore 0.476 mol of hexane forms - 14/2 x 0.476 - 3.33 mol
mass of water formed - 3.33 mol x 18.0 g/mol = 59.9 g