Question

СРОЧНО 15 БАЛЛОВ!!! Закончить уравнения реакций: 1)Li+O₂= 2)CaO+HNO₃=

Answer 1

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Answer 2

1)4Li + O₂ = 2Li₂O   2)CaO + 2HNO₃ = Ca(NO₃)₂ + H₂O 

Answer 3

Уравнение реакции 1: Li + O₂

To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The unbalanced equation is: Li + O₂

To balance the equation, we can follow these steps:

Step 1: Balance the atoms other than oxygen and hydrogen. Since there is only one lithium (Li) atom on the left side, we need to put a coefficient of 2 in front of Li on the right side to balance the number of lithium atoms.

The balanced equation becomes: 2Li + O₂

Step 2: Balance the oxygen atoms. There are two oxygen (O) atoms on the right side, so we need to put a coefficient of 2 in front of O₂ on the left side to balance the number of oxygen atoms.

The final balanced equation is: 2Li + O₂ → 2LiO

Therefore, the balanced equation for the reaction between lithium (Li) and oxygen (O₂) is: 2Li + O₂ → 2LiO.

Уравнение реакции 2: CaO + HNO₃

To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The unbalanced equation is: CaO + HNO₃

To balance the equation, we can follow these steps:

Step 1: Balance the atoms other than oxygen and hydrogen. Since there is only one calcium (Ca) atom on the left side, we need to put a coefficient of 1 in front of CaO on the right side to balance the number of calcium atoms.

The balanced equation becomes: CaO + HNO₃

Step 2: Balance the oxygen atoms. There are three oxygen (O) atoms in HNO₃, so we need to put a coefficient of 3 in front of HNO₃ to balance the number of oxygen atoms.

The balanced equation becomes: CaO + 3HNO₃

Step 3: Balance the hydrogen atoms. There are three hydrogen (H) atoms in 3HNO₃, so we need to put a coefficient of 3 in front of HNO₃ to balance the number of hydrogen atoms.

The final balanced equation is: CaO + 3HNO₃ → Ca(NO₃)₂ + H₂O

Therefore, the balanced equation for the reaction between calcium oxide (CaO) and nitric acid (HNO₃) is: CaO + 3HNO₃ → Ca(NO₃)₂ + H₂O.

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