Предмет: Химия, автор: Аноним

кальций - оксид кальция- карбонат кальция - гидрокарбонат кальция- карбонат кальция- оксид кальция- оксид кальция- сульфат кальция - сульфат бария

Ответы

Автор ответа: Keelat
0
Ca + H2O = CaO + H2
CaO + H2CO3 = CaCO3 + H2O
CaCO3 + CO2 + H2O = Ca(HCO3)2
Ca(HCO3)2 = CaCO3 + CO2 + H2O
CaCO3 + H2O = CaO + H2CO3

CaO + H2SO4 = CaSO4 + H2O
H2SO4 + BaO = BaSO4 + H2O
Автор ответа: Аноним
0
спасибки
Автор ответа: Аноним
0
неее
Интересные вопросы
Предмет: Английский язык, автор: dariaivanova1999
ДАМ 50 БАЛЛОВ ПОМОГИТЕ С ЗАДАНИЕМ Choose the appropriate word to complete the sentences. Make sure to use
the correct form. Формы слова Выберите подходящее слово, чтобы завершить предложения. Обязательно используйте правильная форма.
1. power, powerful, powerfully, powerless, powered
a. There are many ways of producing ....
b. Battery ... calculators occupy less space than their predecessors.
c. A computer is a very ... machine.
d. Computers are rendered ... if there isn’t an emergency supply
system in case of power failure.
2. logic, logical, logically
a. To be a good programmer one must be ... in one’s approach to a
problem,
b. The ... operations performed by the arithmetic-logical unit are under
the control of the control unit.
c. A program must be ... organized if successful results are to be
obtained.
3. computer, compute, computerized, computed, computation
a. The banking industry has become more and more ....
b. It is a fact that humans cannot... as fast as ... .
c. The ... requirements necessary to produce the payroll for a large
company take a very long time.
provision, provide, provided, provider
a. A programmer must ... the computer with the necessary data and
instructions to execute the problem.
b. The ... of a new and larger computer installation will result in a
better service to customers.
c. A programmer can operate a computer... he has the proper training.
Предмет: Алгебра, автор: olegnew