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:
Поделитесь своими знаниями, ответьте на вопрос:
Ar(Si) = 28,088
Найти:
ω(²⁸Si)-?
ω(²⁹Si)-?
Решение.
Примем массовую долю нуклида ²⁸Si за х, тогда массовая доля нуклида ²⁹Si составит 1-х
Составим алгебраическое уравнение:
28х+29*(1-х)=28,088
28х+29-29х=28,088
-х=-0,912
х=0,912, что соответствует массовой доли нуклида ²⁸Si
ω(²⁹Si)=1-0,912=0,088
Проверка:
28*0,912+29*0,088 = 28,088
ответ: Массовая доля нуклида с массой 28 составляет 0,912 или 91,2%, а массовая доля нуклида с массой 29 составляет 0,088 или 8,8%