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:
CaCO3 = CaO + CO2
100кг 56кг
a) Находим массу чистого карбоната кальция (Укг)
400кг СаСО3 100%
Укг СаСО3 94%
укг = 400*94:100 = 376кг
б) Мr(CaCO3) 40+12+48 =100
M(CaCO3) = 100кг/моль
m (CaCO3) = n*M = 1 моль*100кг/моль= 100кг
Mr(CaO) = 40+16 = 56
M(CaO) = 56кг/моль
m(caO) = 56кг
в) Составляем пропорцию:
376кг (СаСО3) Хкг (СаО)
100кг (СаСО3) 56кг (СаО)
Хкг(СаО) = 376*56:100 = 210,56 кг
ответ: масса оксида кальция 210,56кг