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joja [24]
3 years ago
15

I have a homework and I need help please.​

Chemistry
1 answer:
gulaghasi [49]3 years ago
3 0

Answer:

yeah we cant see it

Explanation:

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Part a write an equation for the formation of nh3(g) from its elements in its standard states. express your answer as a chemical
andrey2020 [161]
A. N₂ (g) + 3 H₂ (g) --> 2 NH₃ (g)
B. The value for standard enthalpy of formation is empirical given that the reactants involved were pure elements. So, you can search this on the internet or in any textbook. The Hf for NH₃ is -46.0 kJ/mol.
C. C (s) + O₂ (g) --> CO₂ (g)
D. The Hf for CO₂ is <span>-393.5 kJ/mol
E. 4 Fe (s) + 3 O</span>₂ (g) --> 2 Fe₂O₃ (s)
F. The Hf for solid Fe₂O₃ is -826.0 kJ/mol.
G. C (s) + 2 H₂ (g) --> CH₄ (g)
H. The Hf for methane gas is -74.9 kJ/mol.
3 0
3 years ago
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alexdok [17]
I believe it’s B, C, and D
4 0
2 years ago
Which one of the following scenarios accurately describes a condition in which resonance can occur? A. A column of air has a hei
bixtya [17]

The correct answer from the choices is: D

Resonance is an event where an external force or vibration moves another system to oscillate with higher amplitude at certain frequences or there is a transfer of energy between two or more different storage modes. 


7 0
3 years ago
The natural tendence of an object to resist change in its state of motion is:
Vera_Pavlovna [14]

Answer:

inertia

Explanation:

The principal of inertia explains why objects do not voluntarily change their speed or direction without the influence of an external force. Inertia is not unaffected by other forces in planetary systems such as Earth and is, as such, not really observable on planetary surfaces. This is due to the resistance forces of gravity and friction from both the air and the ground. The drag slows objects down and makes it appear as if a constant force were necessary to keep them in motion.

8 0
3 years ago
NaI(aq) + Cl2(g) → NaCl(aq) + I2(g)<br> what are the oxidation and reduction half- reactions?
ANEK [815]

Answer:

Explanation:

Oxidation half reaction

2I- -> I2 + 2e-

Reduction half reaction

Cl2 + 2e- -> 2Cl-

4 0
3 years ago
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