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MariettaO [177]
3 years ago
15

Firewood burns and ashes remain is it a chemical or physical change?

Chemistry
2 answers:
dexar [7]3 years ago
7 0

Respuesta: físico

Explanation:El papel, la ceniza y el humo son sustancias diferentes. CLASES DE CAMBIOS QUÍMICOS: ... En la combustión la materia arde y se forman otras sustancias, como ceniza, vapor de agua y dióxido de carbono. Por ejemplo, se produce una combustión cuando arde la madera

erastova [34]3 years ago
4 0
It is a physical change because you can not put it back like it was
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8 0
3 years ago
What type of covalent bond is formed between amino acid molecules during protein synthesis? peptide bond electrovalent bond hydr
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The type of covalent bond is formed between amino acid molecules during protein synthesis will be  <u>"peptide bond".</u>

<u />

A peptide bond would be a sort of covalent link that connects an amino acid's carboxyl group to its amino group. Amino acids itself were comprised of atoms bonded together through covalent bonds.

Two atoms share an electron pair equally in a covalent link. Peptide (amide) but also disulfide links between amino acids, as well as C-C, C-O, and C-N bonds within amino acids, represent examples of significant covalent bonds.

Therefore, the type of covalent bond is formed between amino acid molecules during protein synthesis will be  <u>"</u><u>peptide bond"</u><u>.</u>

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8 0
1 year ago
HELP!!!
WARRIOR [948]

Answer:

no

Explanation:

4 0
3 years ago
The average weather conditions of a region
Verdich [7]

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6 0
3 years ago
For the reaction x2 + y + z → xy + xz, it is found that doubling the concentration of x2 doubles the reaction rate, tripling the
andre [41]
R=[x2][y] rate law of the reaction
check:
if we double x2,  r(new) =[2*x2][y]=2*[x2]*[y]=2*r
if we triple y,  r(new) =[x2][3y]=3*[x2]*[y]=3*r  
z- no effect, so z is not included

5 0
3 years ago
Read 2 more answers
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