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Slav-nsk [51]
3 years ago
13

Draw structure of oxygen, nitrogen &methane.​

Chemistry
2 answers:
Murrr4er [49]3 years ago
7 0

Answer:

\huge \purple {\mathfrak{Answer:}}

Elina [12.6K]3 years ago
4 0

See the image below-⬇⬇-

Hope this helps :D

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How many atoms are in a sample of 68.7 g copper (Cu)?
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..........The answer is B
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Quick question plz . .....Which one of the following is acidic oxide?
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B

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The length of a spring when it's at rest is measured to be 0.56 centimeter. How many significant figures are there in this measu
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8 0
4 years ago
A cubic piece of platinum metal (specific heat capacity = 0.1256 J/°C・g) at 200.0°C is dropped into 1.00 L of deuterium oxide ('
polet [3.4K]

Answer:

a=5.65cm

Explanation:

Hello,

In this case, for this heat transfer process in which the heat lost by the hot platinum is gained by the cold deuterium oxide based on the equation:

Q_{Pt}=-Q_{Deu}

We can represent the heats in terms of mass, heat capacities and temperatures:

m_{Pt}Cp_{Pt}(T_f-T_{Pt})=-m_{Deu}Cp_{Deu}(T_f-T_{Deu})

Thus, we solve for the mass of platinum:

m_{Pt}=\frac{-m_{Deu}Cp_{Deu}(T_f-T_{Deu})}{Cp_{Pt}(T_f-T_{Pt})} \\\\m_{Pt}=\frac{-1.00L*1110g/L*4.211J/(g\°C)*(41.9-25.5)\°C}{0.1256J/(g\°C)*(41.9-200.0)\°C} \\\\m_{Pt}=3860.4g

Next, by using the density of platinum we compute the volume:

V_{Pt}=\frac{3860.4g}{21.45g/cm^3}\\ \\V_{Pt}=180cm^3

Which computed in terms of the edge length is:

V=a^3

Therefore, the edge length turns out:

a=\sqrt[3]{180cm^3}\\ \\a=5.65cm

Best regards.

6 0
3 years ago
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