copper (II) hydroxide
Carbon dioxide
barium sulfate
Hydrosulfuric axid

Cho hỗn hợp vào dung dịch AgNO3 𝐴𝑔𝑁𝑂3 dư,đồngvànhômsẽphảnứng,kimloạithuđượclàAg.Cu+2Ag→Cu(NO3)2+↓𝐶𝑢+2𝐴𝑔𝑁𝑂3→𝐶𝑢(𝑁𝑂3)2+2𝐴𝑔↓

3AgNO→Al(NO3)3+3Ag↓

4p+5o2 --To-->2p2o5
Po2o5 + 3h2o ---> 2h3po4
h3po4 + naoh ---> na3po4 + hO

2na3po4 + 3cacl2 ---> 6nacl +ca(po4)2

Hi Henry,I'm sorry to hear that you're worried about starting at your new school. I've got some advice for you. Why don't you surf on school’s blog or website? In this way, you'll meet students and it'll be easier to get to know them.Another idea is to take part in after-school activities. Then, you'll meet other students at these activities and you'll have the chance to talk to them.I hope my advice helps. Write back. John--best friend

The cat eats its food faster than the dog
Althought he plays the guitar well, he doesn't like performing in front of others.

i fond of reading stories about famous scientists
they spend a lot of time doing DIY projects for their parents
teen stress might come from conflicts with friends and sibling

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