Предмет: Химия, автор: kaptof2714

Помогите, пожалуйста
При взаимодействии 5,64 г оксида активного металлического элемента, обнаруживающего в соединениях степень окисления +1, образовалось 6,72 г щелочи. Установите формулу оксида

Ответы

Автор ответа: limonite2004

Ответ:

K2O;

Объяснение:

Me2O + H2O = 2MeOH;

5.64 * (2x + 34) = 6.72 * (2x + 16);

11.28x + 191.76 = 13.44x + 107.52;

2.16x = 84.24;

x = 39; Me - K;

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Hugo was the new man in the travel agency. He'd only been working there Assistant to the as an Manager for three months d he really enjoyed an his job. Hugo was looking forward the moment to when he would become manager so that he could a work with customers by himself The only problem with lived long way fro his job was that Hugo a the office, so the way there and back took ages. He hated wasting and fell into new habit of read time a ing the train. He travel magazines. The dis- on read advantage seemed to turn into an advantage: Hugo read the latest news about tourist resorts, people's experiences and analytical articles tendencies on and in the tourist business. He accurately prospects made notes on the most useful information. He thought that the knowledge could compensate for his own poor travel experience, and would eventu ally help his clients, too.
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"We are planning to celebrate our 45th wedding anniversary in Alice Springs. Can you arrange a tour there for us? "
"Yes, sir, we certainly can," the manager said promptly. "Sit down, please. My assistant, Hugo will make coffee for you. I'll enquire about the hotel and flight availability and calculate the total cost of the trip. It'll take ten minutes."
"You are very efficient," the lady looked impressed. "Thank you. But could I have weak tea in stead of coffee? I've weak for got heart, coffee is poison for me"
"of course, no problem. Hugo, did hat?" and the you hear manager focused on the calculation.
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"It is," Hugo nodded. "It's in Central Australia." He paused, and added: "I'm sorry, it's not certainly my business, but I'm sure you should not go there at this time of the year."
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