đơn chất nào sau đây tác dụng với dung dịch axit sunfuric loãng sinh ra khí ?
a đồng
b cacbon
c nhôm
d lưu huỳnh

Answers

Answer 1

Answer:

C. Al

Explanation:

2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2


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what is the wavelength of radio waves that have a frequency of 3.20 x 1010 hz?

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Explanation:

Answer: 9.38 x 10^−3 m

Explanation:

need help w this question

Answers

Answer:

ok you got it you just need to add.

Explanation:

add 5 times and she what you get.

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