Вопрос школьника по предмету Химия
напишите уравнения реакций между следующими вешествами железа + соляная кислота, серная кислота + гидросид натрия, натрот бария + сульфат натрия, хлорид натрия + гидросид калия.
Ответ учителя по предмету Химия
Fe + 2HCl -> FeCl2 + H2↑
H2SO4 + 2NaOH -> Na2SO4 + 2H2O
Ba(NO3)2 + Na2SO4 -> 2NaNO3 + BaSO4↓
NaCl + KOH -> реакция не идёт
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морфологический разбор слов
словарь,столбцах,события,человеку, совесть заранее Спасибо
Найди и выпиши из этого абзаца две группы родственных слов. Одновременно с испарением в атмосферу вода возвращается на Землю. Тогда выпадает град, снег, дождь, роса, туман. Эти природные явления происходят непрерывно круглый год. Именно их учёные называют круговоротом воды в природе. Если в одной части Земли стоит жара, где-то в другой её части идут дожди. Когда в одном месте планеты снежные заносы, в каком-то другом месте — снега не дождёшься.
LADY WATT ACCUSED OF SHOP-LIFTING
Lady Watt: On Wednesday morning I went to Harrod’s Department Store to do some shopping and to meet a friend for lunch. In the Ladies Fashion Department I bought a belt and a bag and paid for them. As I was waiting for the lift to go up to the Rooftop Cafe, I saw a silk scarf that I liked. I tried it on and decided to buy it. I looked around for a shop-assistant to pay but couldn’t see anybody. The lift came and as I was late for my appointment, I put the scarf with my other purchases, intending to pay for it later on my way out. Unfortunately, I forgot to pay and was stopped at the door by the store detective who asked me to go to the manager’s office where I was accused of having stolen the scarf. It’s quite ridiculous. I simply forgot to pay.
The Store Detective: I was on duty on the second flour when I observed Lady Watt trying on a scarf. She looked at herself in the mirror, looked around several times and then put the scarf into her bag. Then she went up in the lift to the top floor café where she met a man. I kept on my observation and when they left together, I followed them to the door. She had made no attempt to pay so I stopped her and asked her to accompany me to the manager’s office. She became abusive and refused to go with me until a policeman arrived on the scene.