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hammer [34]
3 years ago
15

Sliver tarnishes physical or chemical change ?

Chemistry
2 answers:
elena55 [62]3 years ago
5 0

silver tarnishes is a chemical change

statuscvo [17]3 years ago
4 0
Chemical changes must involve a reaction. A hint that this is a chemical change is that there is a color change involved (from silver to black), and the tarnish can be removed without removing the unreacted silver.

Therefore, silver tarnishing would be a chemical change.

hope this helps!

You might be interested in
Glucose, C6H12O6, is used as an energy source by the human body. The overall reaction in the body is described by the equation C
Crank

Answer:

70.3824 grams of carbondioxide is produced.

Explanation:

C_6H_{12}O_6(aq)+6O_2(g)⟶6CO_2(g)+6H_2O(l)

Moles of glucose =  \frac{48.0 g}{180 g/mol}=0.2666 mol

According to reaction 1 mole of glucose reacts with 6 mole of oxygen gas.

Then 0.2666 mol of gluocse will reactwith :

\frac{6}{1}\times 0.2666 mol =1.5996 mol of oxygen

Mass of 1.5996 moles of oxygen gas:

1.5996 mol\times 32 g/mol = 51.1872 g

51.1872 grams of oxygen are required to convert 48.0 grams of glucose to CO_2 and H_2O.

According to reaction, 1 mol, of glucose gives 6 moles of carbon dioxide.

Then 0.2666 moles of glucose will give:

\frac{6}{1}\times 0.2666 mol =1.5996 mol of carbon dioxide

Mass of 1.5996 moles of carbon dioxide gas:

1.5996 mol\times 44 g/mol = 70.3824 g

70.3824 grams of carbondioxide is produced.

7 0
3 years ago
Where do soil particles come from?
xxTIMURxx [149]

Answer:

All soil is made up of inorganic mineral particles, organic matter (including living things), air and water. Inorganic mineral particles make up more than half the volume of soil. These particles come from rocks – the parent material that formed the soil.

Hope this helps!

6 0
2 years ago
A cube of an unknown metal measures 0.250 cm on one side. The mass of the cube is 0.134 g. Which of the following is most likely
rosijanka [135]

Answer:

8.58 g/cm3

Explanation:

density = mass / volume

be attention that the question gives u the length of

one side of the cube so u should calculate the volume

of the cube using your information of math .

1st we calculate the volume of the cube :

 V of cube = a 3= axaxa

                 = 0.250 x0.250 x0.250

                 = 0.0156 cm3

 2nd step

density = mass/volume

             =  0.134/ 0.0156 = 8.58 g/cm3

5 0
3 years ago
25. What is a subdivision of a family? *<br> O kingdom<br> O domain<br> O genus<br> O species
Anni [7]
The answer I believe is genus
7 0
3 years ago
What are hydroxyl groups and what happens to them when molecules combine?
Sloan [31]
Hi! Chemistry is complicated, right?

A hydroxyl group is a group that consists of
oxygen and hydrogen bonds. When they combine, ethanol may be released.

I hope I helped!
5 0
3 years ago
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