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galben [10]
3 years ago
7

This equation represents an unbalanced chemical reaction:

Chemistry
1 answer:
EleoNora [17]3 years ago
5 0

Answer:

C=2

Explanation:

It would end as 2 NaI+1Cl2=2NaCl +1I2

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why is Dalton credited with proposing the first atomic theory if Democrritus was talking about atoms 2,200 years earlier
Readme [11.4K]

Answer:Why is Dalton credited with proposing the first atomic theory if Democritus was talking about atoms almost 2,200 years earlier?

- Democritus' ideas were not supported by evidence

- Dalton's theory was the first scientific theory because it relied on scientific investigative processes.

- Dalton's theory was supported by evidence and repeated investigation.

Explanation:  1: Democritus' ideas were not supported by evidence

2: Dalton's theory was the first scientific theory because it relied on scientific investigative processes.

3: Dalton's theory was supported by evidence and repeated investigation.

5 0
3 years ago
For the decomposition of ammonia on a platinum surface at 856 °C
Crazy boy [7]

\\ \tt\leadsto \dfrac{d[NH_3]}{dt}=1.50\times 10^{-6}

  • dt remains same for reaction

\\ \tt\leadsto \dfrac{d[H_2]}{dt}=\dfrac{3}{2}\dfrac{d[NH_3]}{dt}

\\ \tt\leadsto \dfrac{d[H_2]}{dt}=\dfrac{3}{2}(1.5\times 10^{-6})

\\ \tt\leadsto \dfrac{d[H_2]}{dt}=2.25\times 10^{-6}Ms^{-1}

M is molarity here not metre

5 0
2 years ago
What is the ratio? <br> A 3:1<br> B 2:1<br> C 21:7
Stolb23 [73]

Answer:

I think it's b if not then sorry

3 0
3 years ago
Consider the following properties: I) The red color of rubies is due to the presence of chromium ions. II) Objects made of silve
quester [9]

Answer:

II) Objects made of silver become tarnished.

Explanation:

Physical properties are the properties which can be observed without changing identity of substance.

Chemical properties are the properties which describe how the substance changes into the different substance completely.

Boiling is an example of physical change in state of the substance. Color is also an example of physical property like boiling point and hence these are constants. The reason of the color is that the chromium ions shows certain colors as the electrons are excited due to absorption of the light. The tarnishing of the silver is an example of the chemical change which occurs due to the reaction of the silver with oxygen. This is also known as corrosion.

5 0
4 years ago
How much silver can be produced from 125g of Ag2S
rosijanka [135]

Answer:

108.9g of Silver can be produced from 125g of Ag2S

Explanation:

The compound Ag2S shows that two atoms of Silver Ag, combined with an atom of Sulphur S to form Ag2S. We can as well say the combination ration of Silver to Sulphur is 2:1

•Now we need to calculate the molecular weight of this compound by summing up the molar masses of each element in the compound.

•Molar mass of Silver Ag= 107.9g/mol

•Molar mass of Sulphur S= 32g/mol

•Molecular weight of Ag2S= (2×107.9g/mol) + 32g/mol

•Molecular weight of Ag2S= 215.8g/mol + 32g/mol= 247.8g/mol

•From our calculations, we know that 215.8g/mol of Ag is present in 247.8g/mol of Ag2S

If 247.8g Ag2S produced 215.8g Ag

125g Ag2S will produce xg Ag

cross multiplying we have

xg= 215.8g × 125g / 247.8g

xg= 26975g/247.8

xg= 108.85g

Therefore, 108.9g of Silver can be produced from 125g of Ag2S

3 0
4 years ago
Read 2 more answers
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