PLEEAASSEE HEELLPP MEE I NEED THIS ANSWER TO FINISH THE LAST QUESTION

Elements or compounds that enter are Reactants.

The substances that are formed are the Products

Reactants in C6H12O6 + 602 ---> 6CO2 + 6H2O are  C₆H₁₂O₆ + 6 O₂

Reactants in 6 CO2 + 6H2O --->C6H12O6 + 602 are    6 CO₂ + 6 H₂O

Reactants in 2 H2 +O2 ---> 2 H2O  are  2 H₂ +O₂

Reactants in 2 H2O ---> 2 H2 + O2  are  2 H₂O

Explanation:

The number of atoms in the reactants have to balance with the number of atoms in the products.

The first two examples given are for metabolism of carbohydrates (similar to combustion of hydrocarbons) and photosynthesis.

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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