3 years ago

6th grade science please answer both ! :))

Chemistry

1 answer:

Elanso [62]3 years ago

4 0

Answer:

21. Erosion causes physical changes. For example - Land degradation, deforestation.

20. B statement is closely related to climate.

hope it helps!

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What is the Big Bang

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the rapid expansion of matter from a state of extremely high density and temperature that according to current cosmological theories marked the origin of the universe.

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3 years ago

1What is ""Fremy's salt""? Write the molecular formula of Fremy's salt. Write the structure of the product obtained from phenol.

EastWind [94]

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The Fremy salt is a chemical compound its chemical name is disodium nitrosodisuphonate

The molecular formula of the Fremy salt is $K_2NO(SO_3)_2$

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$C_2H_5OH\rightarrow C_6H_4O_2$ ( in presence of Fremy salt and water)

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Which is an element? A: H20 B: NaCl C: Mg D: CO

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Atomic mass: 58.9332
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Electrons: 27

Hope this helps!