Question

Расставить коэффициенты HCL+AgNO3 MgO+H2O CaCo3

Answer 1

HCl + AgNO3 = AgCl + HNO3

MgO + H2O = Mg(OH)2

CaCO3 -> CaO + CO2

Answer 2

It seems like you want to balance the chemical equations for the given reactions. To do that, we need to ensure that the same number of atoms of each element are present on both sides of the chemical equation. Let's balance each of the equations:

1. HCl + AgNO3 → AgCl + HNO3

To balance this equation, we need to make sure that the number of atoms of each element is the same on both sides. Let's start by balancing the chlorine (Cl) atoms:

HCl + AgNO3 → AgCl + HNO3

There is one chlorine atom on the left side (HCl) and one on the right side (AgCl), so chlorine is balanced. Now, let's balance the silver (Ag) atoms:

HCl + AgNO3 → AgCl + HNO3

There is one silver atom on the left side (AgNO3) and one on the right side (AgCl), so silver is balanced too. Finally, let's balance the hydrogen (H) and nitrogen (N) atoms:

HCl + AgNO3 → AgCl + HNO3

The hydrogen and nitrogen atoms are already balanced. The balanced equation is:

HCl + AgNO3 → AgCl + HNO3

2. MgO + H2O → Mg(OH)2

To balance this equation, let's start with oxygen (O) atoms:

MgO + H2O → Mg(OH)2

There is one oxygen atom on the left side (MgO) and two on the right side (Mg(OH)2). To balance oxygen, we need to put a coefficient of 2 in front of MgO:

2MgO + H2O → Mg(OH)2

Now, let's balance the hydrogen (H) atoms:

2MgO + H2O → Mg(OH)2

There are two hydrogen atoms on the right side (H2O) and four on the right side (Mg(OH)2). To balance hydrogen, we need to put a coefficient of 2 in front of H2O:

2MgO + 2H2O → Mg(OH)2

The balanced equation is:

2MgO + 2H2O → Mg(OH)2

3. CaCO3 → CaO + CO2

To balance this equation, let's start with carbon (C) atoms:

CaCO3 → CaO + CO2

There is one carbon atom on the left side (CaCO3) and one on the right side (CO2), so carbon is balanced. Now, let's balance the calcium (Ca) atoms:

CaCO3 → CaO + CO2

There is one calcium atom on the left side (CaCO3) and one on the right side (CaO), so calcium is balanced. Finally, let's balance the oxygen (O) atoms:

CaCO3 → CaO + CO2

There are three oxygen atoms on the left side (CaCO3) and two on the right side (CaO + CO2). To balance oxygen, we need to put a coefficient of 2 in front of CaO:

CaCO3 → 2CaO + CO2

The balanced equation is:

CaCO3 → 2CaO + CO2

Now all three chemical equations are balanced!