1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mojhsa [17]
3 years ago
7

On a cold day you will shiver. Explain how this response relates to stimulus

Chemistry
1 answer:
Alisiya [41]3 years ago
5 0

Shivering is your body's reaction to cold. It reacts like that, because shivering helps you get hot.

You might be interested in
your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?
Scorpion4ik [409]
You would expect to see a marble-looking rock
3 0
4 years ago
Considere la siguiente reacción: H, (g) +1, (a) = 2 HI (9). K, para la reacción es 54.3 a 430°C. Si se coloca H, 0.00623M, 0.004
bearhunter [10]

Answer:

[HI] = 0.0255M

[H₂] = 0.00466M

[I₂] = 0.00257M

Explanation:

Para la reacción:

H₂(g) + I₂(g) ⇄ 2HI(g)

La constante de equilibrio, K, se define como:

54.3 = [HI]² / [H₂] [I₂]

Donde cada concentración [] será la concentración en equilibrio para cada especie

Para saber la dirección del equilibrio definiremos Q como:

Q = [HI]² / [H₂] [I₂]

Donde las concentraciones [] serán las concentraciones actuales de cada gas

Reemplazando:

Q = [0.0224M]² / [0.00623M] [0.00414M]

Q = 19.5

Como Q<K, la reacción se desplazará hacia la derecha produciendo más [HI]. Así, las concentraciones en equilibrio serán:

[HI] = 0.0224M +2X

[H₂] = 0.00623M - X

[I₂] = 0.00414 - X

54.3 = [0.0224M +2X]² / [0.00623M - X] [0.00414M - X]

54.3 = 0.00050176 + 0.0896 X + 4 X² / 0.0000257922 - 0.01037 X + X²

0.00140052 - 0.563091 X + 54.3 X² =  0.00050176 + 0.0896 X + 4 X²

0.00089876 - 0.652691 X + 50.3 X² = 0

Resolviendo la ecuación cuadrática:

X = 0.001566M → Solución verdadera

X = 0.01141M → Falsa solución. Produciría concentraciones negativas

Reemplazando:

[HI] = 0.0224M +2*0.001566M

[H₂] = 0.00623M - 0.001566M

[I₂] = 0.00414 - 0.001566M

[HI] = 0.0255M

[H₂] = 0.00466M

[I₂] = 0.00257M

Siendo estas últimas, las concentraciones de las especies luego de alcanzar el equilibrio.

8 0
3 years ago
Which solid is the most suitable in the space elevator cable
Tresset [83]
It should be Carbon Nanotubes
4 0
3 years ago
Coordination chemistry of the carboxylate type siderophore rhizoferrin: the iron(iii) complex and its metal analogs
Afina-wow [57]

solution;

Rhizoferrin is a member of a new class of siderophores (microbial iron transport compounds) based on carboxylate and hydroxy donor groups rather than the commonly encountered hydroxamates and catecholates. We have studied the coordination chemistry of rhizoferrin (Rf), as a representative of this group, with Fe(3+), Rh(3+), Cr(3+), Al(3+), Ga(3+), VO(2+), and Cu(2+). The metal complexes have been studied by UV-vis, CD, NMR, and EPR spectroscopies and mass spectrometry. The formation constants for the iron complex have also been measured and yield a log K(LFe) of 25.3. The Rh and Cr rhizoferrin complexes are unusual in that they appear to adopt a chirality about the metal center that is the opposite of the native iron analog. Several of the alternative metal ion complexes are found to have biological activity toward Morganella morganii in a plate type assay.

8 0
3 years ago
Compared to a swimming pool filled with water, a hot cup of coffee has higher temperature, but less thermal energy
Naily [24]
Are you asking if this is true or false?
5 0
3 years ago
Other questions:
  • Apparently the first organic compound synthesized in a lab was____
    5·1 answer
  • Which cell structure contains the cell’s genetic material, controls the cell’s activities, and is sometimes referred to as the c
    12·1 answer
  • Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the
    10·2 answers
  • How many protons does Mg²₊ have?
    13·1 answer
  • Importance of pH value in daily life
    9·1 answer
  • Why is it harder to remove an electron from fluorine than from carbon, or, to put it another way, why are the valence electrons
    11·1 answer
  • X-rays are often used in medical settings to create images of the body's internal structures such as bones. This is made possibl
    5·1 answer
  • An element has 4 protons, 5 neutrons, and 4 electrons. Choose the correct answer. *
    10·1 answer
  • La historia de la quimica se inicia con el descubrimiento de
    5·1 answer
  • Which of the following is NOT needed for the formation of coal from plant remains?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!