Как записывется качественный состав вещества

вода допустим - качественный Н и О т.е. из каких атомов состоит вещество, а колличественный Н2О сколько атомов в молекуле.

Education is an important tool which is very useful in everybody’s life. Education is what differentiates us from other living beings on earth. It makes man the smartest creature on earth. It empowers humans and gets them ready to face challenges of life efficiently. With that being said, education still remains a luxury and not a necessity in our country. Educational awareness needs to be spread through the country to make education accessible. But, this remains incomplete without first analyzing the importance of education. Only when the people realize what significance it holds, can they consider it a necessity for a good life. In this essay on Education, we will see the importance of education and how it is a doorway to success.

Объяснение:

Объяснение:

H2SO4 + 2NaOH = Na2SO4 + 2H2O

2H(+) + SO4(2-) + 2Na(+) + 2OH(-) = 2Na(+) + SO4(2-) + 2H2O

2H(+) + 2OH(-) = 2H2O

FeCl2 + 2NaOH = Fe(OH)2↓ + 2NaCl

Fe(2+) + 2Cl(-)+ 2Na(+) + 2OH(-) = Fe(OH)2↓ + 2Na(+) + 2Cl(-)

Fe(2+) + 2OH(-) = Fe(OH)2↓

CaCO3 + 2HCl = CaCl2 + CO2↑ + H2O

CaCO3 + 2H(+) + 2Cl(-) = Ca(2+) + 2Cl(-) + CO2↑ + H2O

CaCO3 + 2H(+) = Ca(2+) + CO2↑ + H2O

Na2SO3 + 2HCl = 2NaCl + SO2↑ + H2O

2Na(+) + SO3(2-) + 2H(+) + 2Cl(-) = 2Na(+) + 2Cl(-) + SO2↑ + H2O

SO3(2-) + 2H(+) = SO2↑ + H2O

Ca(OH)2 + Na2SiO3 = CaSiO3↓ + 2NaOH

Ca(OH)2 + 2Na(+) + SiO3(2-) = CaSiO3 + 2Na(+) + 2OH(-)

Ca(OH)2+ SiO3(2-) = CaSiO3 + 2OH(-)