Question

Раставить коэфициенты. Zn(OH)2→ZnO+H2O Cu(OH)2→CuO+H2O Al(OH)3+HCl→AlCl3+H2O Cu(OH)2+HCl→CuCl2+H2O Ca(OH)2+HCl→CaCl2+H2O

Answer 1

Zn(OH)2→ZnO+H2O - коэффициенты не нужны
Cu(OH)2→CuO+H2O -не нужны
Al(OH)3+3HCl→AlCl3+3H2O
Cu(OH)2+2HCl→CuCl2+2H2O
Ca(OH)2+2HCl→CaCl2+2H2O

Answer 2

I can help you with your chemistry question. Here are the balanced equations for the reactions you asked:

$$Zn(OH)_2 \rightarrow ZnO + H_2O$$ $$Cu(OH)_2 \rightarrow CuO + H_2O$$ $$Al(OH)_3 + 3HCl \rightarrow AlCl_3 + 3H_2O$$ $$Cu(OH)_2 + 2HCl \rightarrow CuCl_2 + 2H_2O$$ $$Ca(OH)_2 + 2HCl \rightarrow CaCl_2 + 2H_2O$$

To balance these equations, you need to follow these steps:

- Write the unbalanced equation using the correct chemical formulas for the reactants and products. - Count the number of atoms of each element on both sides of the equation and list them under the equation. - Choose an element that appears in only one compound on each side and adjust the coefficients to make the number of atoms of that element equal on both sides. Repeat this for other elements until all are balanced. - Check that the total charge on both sides is equal. If not, add electrons as needed to balance the charge. - Simplify the coefficients by dividing them by the greatest common factor if possible.

You can find more examples and explanations of how to balance chemical equations on this website or use this online tool to check your answers. I hope this helps you with your homework. Have a nice day!