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Нужна помощь)
только уравнять реакцию
Бензиловый спирт+дихромат калия+серная кислота=бензойная кислота+сульфат хрома(3)+сульфат калия+вода
Условие реакции на фото, если нужно
Ответы 1
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3C7H7OH + 2K2Cr2O7 + 8H2SO4 = 3C6H5COOH + 2Cr2(SO4)3 + 2K2SO4 + 11H2O
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Автор:
laceyylds - 5 лет назад
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ВАРИАНТ 1
1. Определите значение переменной А после выполнения фраг-
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• ответьте письменно на вопросы.
Bank Accounts
There are two general reasons for using a bank account. The first and most common are the convenience and safety provided by a current account at a bank. The second is that small and perhaps regular surpluses are available to be saved, and for this purpose a bank provides deposit accounts.
A deposit account will not offer a high rate of interest and would not be the best way to save large sums of money for any long period of time, but it is designed to make saving simple, convenient and safe. It is especially appropriate for those who may save small amounts from time to time without any planned regularity or for those who wish to save for a particular purpose in the immediate future, for example for annual holidays or for the purchase of a major item such as a car.
Most customers of a bank who have opened a deposit account will also have a current account and this makes the transfer of amounts of money from one to the other an easy matter. Regular payments into a deposit account can be made through a standing order to the bank that will automatically transfer the agreed amount according to your instructions.
Other payments are made on standard forms but it is most convenient and provides a useful record if the depositor uses a paying in book. Interest is calculated every six months and added to the account. The rate of interest varies from time to time and is publicly advertised in any bank. Because the bank uses money deposited with them to lend to others it normally requires about seven days notice of intention to withdraw money from a deposit account, but unless there is a heavy demand for money they are not likely to insist on this and cash is often immediately available to those who wish to withdraw it. There is an assumption that such notice was given and you would lose seven day's interest on the money.
The increasing need for security and the use of computers in wage payments have combined to make it more common to have a bank account than to be without one. This kind of account is a current one and its most common use is a single regular payment in either a weekly wage or a monthly salary and regular payments out to meet the normal everyday expenses.
Most payments are still made by cheque although the use, of the standing order or the direct debit is becoming very common. It is normally expected that a current account will remain in balance and customers who regularly maintain an agreed minimum balance are often given the services of the bank without charge. In general, however, charges are made which vary with the size of the balance, the amount of use of the bank's services and the number of transactions. If the account is overdrawn a further charge, which is interest on the overdrawn amount, is also made. ,
II. Вопросы.
1. What are the two main reasons for opening a bank account?
2. Which type of account is used by those who wish to save?
3. What kind of saving is this type of account most suited to?
4. What is a standing order?
5. Why does a bank sometimes need notice of intention to withdraw money from saving accounts?-
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lacey11 - 5 лет назад
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