Q2 Make-Up Assignment

Front

What is the balanced equation for photosynthesis?

Back

@@6CO_2 + 6H_2O ightarrow C_6H_{12}O_6 + 6O_2@@

Front

How do you determine the number of oxygen atoms in a compound?

Back

Count the number of O in the chemical formula. For example, in 3Al(NO₃)₃, there are 9 O atoms.

Front

What is the significance of balancing chemical equations?

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Balancing chemical equations ensures the conservation of mass, meaning the number of atoms of each element is the same on both sides.

Front

What is the formula for calculating the number of hydrogen atoms in a compound?

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Multiply the number of H in the formula by the coefficient. For example, in 3(NH₄)₂CrO₄, there are 24 H atoms.

Front

What does the coefficient in a chemical equation represent?

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The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How many oxygen atoms are in 2Mg₃(PO₄)₂?

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There are 8 oxygen atoms (2 * 4 = 8).

Front

What is the balanced equation for the combustion of propane (C₃H₈)?

Back

@@C_3H_8 + 5O_2 ightarrow 3CO_2 + 4H_2O@@.

Front

What is the total number of atoms in the compound 4AlPO₄?

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There are 20 atoms (4 Al + 4 P + 16 O = 20).

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What is the difference between a reactant and a product in a chemical reaction?

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Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.

Front

What is the law of conservation of mass?

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The law states that mass is neither created nor destroyed in a chemical reaction.