My friend is
He usually does
It is afternoon
He is at work
He writes a letter
He usually writes
He usually goes
My friend swims
His sister plays
My cat likes
My father is a very representative...
His hair is thick and grey.... it looks silver
His eyes are grey-blue. They become steel color when he gets angry.
Dad is barely 70 but he doesn't look..
There are some... wrinkles round his eyes but they are noticed only when he smiles.
He is fond of... as he does many... It keeps him... Nobody sees him
<span>Some
people think that saving money is a waste of time. But that's not
true. If you are on a budget, you don't just spend or save, you plan how to
spend, you plan your expenses. If you spend more money than you get, you
will have a budget deficit. Also if you are a teenager or a child, you can get
pocket money. And then you will have your little
budget. In your time free from studying, you can deliver fliers, newspapers and magazines to houses or take care of your
aunt's </span><span>children. You can get money</span><span><span> for it</span>, too. In some time, you will be able to get a
large amount, and can feel like a real rich man.</span>
Амфотерность оксида и гидроксида заключается в том, что они могут вступать в реакцию как с кислотами, так и с щелочами.
BeO + H2SO4 = BeSO4 + H2O
BeO +2NaOH + H2O = Na2[Be(OH)4]
Be(OH)2 + H2SO4 = BeSO4 + 2H2O
<span>Be(OH)2 + 2NaOH = Na2[Be(OH)4] </span>