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Firlakuza [10]
3 years ago
9

What did sewage treatment in Ancient Rome and 19th century London have in common?

Chemistry
1 answer:
dolphi86 [110]3 years ago
5 0

Answer:

The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely.

Explanation:

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Answer:

Its b its the state not anything else

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What would be the formula of the precipitate that forms when pb(no3)2 (aq) and k2so4 (aq) are mixed?
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The formula of the ppt. formed is PbSo4 , which is inslouble.
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Help me please <br> Answer &amp; exp.
nordsb [41]

Explanation:

Some Rules Regarding Oxidation Numbers:

- Hydrogen has oxidation number of + 1 except in hydrides where it is -1

- Oxygen has oxidation number of -2 except in peroxides where it is -1

- Some elements have fixed oxidation numbers. E.g Halogen group elements has oxidation number of -1

- Oxidation number of a compound is the sum total of the individual elements and a neutral  compound has oxidation number of 0.

A. HI

Hydrogen has oxidation of + 1

Oxidation number of I:

1 + x = 0

x = -1

B. PBr3

Br has oxidation number of - 1

Oxidation number of Pb:

x + 3 (-1) = 0

x = + 3

C. KH

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Oxidation number of K:

1 + x = 0

x = -1

D. H3PO4

Hydrogen has oxidation number of + 1

Oxygen has oxidation number of -2

Oxidation number of P:

3(1) + x + 4(-2) = 0

3 + x - 8 =0

x = 5

8 0
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At an ACME plant in Scottsdale Arizonia methanol is produced commercially
patriot [66]

Answer:

thats nice to know i will send Wile E. Coyote there for his supplys

Explanation:

4 0
3 years ago
Which of the following statements about the greenhouse effect is false?
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The answer is a ik for a fact
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