Question

Объясните пожалуйста подробно как находить омегу. Al2S. Не поняла тему. Вся надежда на вас. Химия 7 класс

Answer 1

W(Al2S) - ?

Mr(Al2S) = 27*2+32=86
w(Al) = 2*27/86 *100% = 63%
w(S) = 32/86 *100% = 37%

Answer 2

Finding the Chemical Formula for Aluminum Sulfide (Al2S)

Aluminum sulfide is a chemical compound composed of aluminum and sulfur. The chemical formula for aluminum sulfide is Al2S.

To understand how to find the chemical formula for aluminum sulfide, it's important to know the valences of the elements involved and how they combine to form a stable compound.

Aluminum has a valence of +3, meaning it can form compounds by losing three electrons. Sulfur, on the other hand, has a valence of -2, indicating that it can form compounds by gaining two electrons.

When these elements combine, they form a compound in which the charges balance out to create a neutral molecule. In the case of aluminum sulfide, the combination of two aluminum atoms (each with a +3 charge) and three sulfur atoms (each with a -2 charge) results in a neutral compound with the chemical formula Al2S.

So, to find the chemical formula for aluminum sulfide (Al2S), you need to consider the valences of aluminum and sulfur and ensure that the charges balance out to form a neutral compound.

I hope this helps clarify how to find the chemical formula for aluminum sulfide! If you have any more questions or need further explanation, feel free to ask.