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Paul [167]
3 years ago
7

On brainly, how can I stop chemistry from popping up on my brainly home page. I only need this for math and thats how I want it.

Chemistry
2 answers:
Sati [7]3 years ago
8 0
<h3>Hello there i hope you are having a great day your question : On brainly, how can I stop chemistry from popping up on my brainly home page. I only need this for math and that how I want it?</h3><h3>pictures are shown below hope that helps you ❤ </h3>

dimulka [17.4K]3 years ago
4 0

Answer:

Go to the top left and you will see ur subject

Explanation:

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Which compound would be expected to show intense IR absorption at 2710 and 1705 cm-1? (Ph = phenyl group)
Serhud [2]

Answer:

B. PhCHO

Explanation:

Every organic group shows a characteristic IR absorption at certain wavelength . With the help of these absorption spectra we can identify the group present on organic molecules .

The wave number of 2710 cm⁻¹ is absorbed by aldehyde bond stretching .

The wave number of 1705 cm⁻¹ is shown by conjugated aldehyde . So the most likely compound among given compounds is PhCHO .

7 0
4 years ago
Butene is an alkene explain how you know
ohaa [14]
Because the suffix is -ene. Anything that ends in ene is an alkene.
4 0
3 years ago
When the oxide of generic metal M is heated at 25.0 ∘ C , a negligible amount of M is produced. MO 2 ( s ) − ⇀ ↽ − M ( s ) + O 2
alex41 [277]

Answer:

1. C(s) + O₂(g) ⇄ CO₂(g)

2. K=\frac{[CO_{2}]}{[O_{2}]}

Explanation:

<em>When the oxide of generic metal M is heated at 25.0 °C, a negligible amount of M is produced. MO₂( s ) ⇄ M(s) + O₂(g) ΔG° = 290.2 kJ/mol.</em>

<em />

<em>1. When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical equation of this coupled process? Show that the reaction is in equilibrium. Include physical states and represent graphite as C(s).</em>

The chemical equation for the coupled reaction is:

C(s) + O₂(g) ⇄ CO₂(g)

<em>2. What is the thermodynamic equilibrium constant for the coupled reaction?</em>

The thermodynamic equilibrium constant (K) is the product of the concentration of the products raised to their stoichiometric coefficients divided by the product of the concentration of the reactants raised to their stoichiometric coefficients. Only gases and aqueous species are included.

K=\frac{[CO_{2}]}{[O_{2}]}

3 0
3 years ago
HELP I DON'T HAVE MUCH TIME PLZ HELP ME IF YOU ARE REALLY GOOD AT SCIENCE COME TO MY QUESTION PLEASEEEE Which fossil fuel create
Bas_tet [7]
Hey there!
The correct answer is C

Hope this helps you!

Always remember, you are a Work Of Art!
- Nicole :) <3
6 0
4 years ago
What is the overall enthalpy of reaction for the equation shown below?
Rudiy27

Answer:

ΔH₁₂ = -867.2 Kj

Explanation:

Find enthalpy for 3H₂ + O₃ => 3H₂O given ...

2H₂ + O₂ => 2H₂O      ΔH₁ = -483.6 Kj

        3O₂ => 2O₃        ΔH₂ = + 284.6 Kj

_____________________________

3(2H₂ + O₂ => 2H₂O) => 6H₂ + 3O₂ => 6H₂O       (multiply by 3 to cancel O₂)

6H₂ + 3O₂ => 6H₂O        ΔH₁ = 3(-483.6 Kj) = -1450.6Kj

          2O₃ => 3O₂           ΔH₂ = -284.6Kj              (reverse rxn to cancel O₂)

_______________________________

6H₂ + 2O₃ => 6H₂O         ΔH₁₂ = -1735.2 Kj       (Net Reaction - not reduced)

________________________________

divide by 2 => target equation (Net Reaction - reduced)

3H₂ + O₃ => 3H₂O            ΔH₁₂ = (-1735.2/2) Kj = -867.2 Kj    

4 0
3 years ago
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