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
a_sh-v [17]
2 years ago
12

Para formar bronce, se mezclan 150g de cobre a 1100°C y 35g de estaño a 560°C. Determine la temperatura final del sistema.

Chemistry
1 answer:
BabaBlast [244]2 years ago
3 0

Answer:

T_F=1029\ºC

Explanation:

¡Hola!

En este caso, dada la información, es posible determinar que la temperatura del sistema estará entre 560 °C y 1100 °C, por lo tanto, se hará necesario establecer la suma de la energía del cobre y del estaño como cero:

Q_{Cu}+Q_{Sn}=0

Así, podremos escribir esta ecuación en términos de masas, calores específicos y temperaturas como sigue:

m_{Cu}C_{Cu}(T_F-T_{Cu})+m_{Sn}C_{Sn}(T_F-T_{Sn})=0

Con el fin de resolver para la temperature final:

T_F=\frac{m_{Cu}C_{Cu}T_{Cu}+m_{Sn}C_{Sn}T_{Sn}}{m_{Cu}C_{Cu}+m_{Sn}C_{Sn}}

Así, reemplazamos las variables conocidas como se muestra a continuación:

T_F=\frac{150g*0.093cal/g\ºC*1100\°C+35g*0.060cal/g\ºC*560\°C}{150g*0.093cal/g\ºC+35g*0.060cal/g\ºC}\\\\T_F=1029\ºC

¡Saludos!

You might be interested in
Select True or False: Pi bonds are covalent bonds in which the electron density is concentrated above and below a plane containi
anzhelika [568]

Answer:

True

Explanation:

In pi bonds, the electron density concentrates itself between the atoms of the compound but are present on either side of the line joining the atoms. Electron density is found above and below the plane of the line joining the internuclear axis of the two atoms involved in the bond.

Pi bonds usually occur by sideways overlap of atomic orbitals and this leads to both double and triple bonds.

3 0
3 years ago
What are elementary particles the make up protons and nuetrons
ahrayia [7]

they are made by of two types of elementary particles

electrons and quarks

quetion answered by

 (jacemorris04)

4 0
3 years ago
Read 2 more answers
Which portion of a molecule of F2O has partial positive charge?
german

Answer:

c

Explanation:

I hope this may help you guys

6 0
1 year ago
Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons
elena-s [515]

Answer:

-372000 J or -372 KJ

Explanation:

We have the electrochemical reaction as;

Mg(s)  +  Fe^2+(aq)→  Mg^2+(aq)  +   Fe(s)

We must first calculate the E∘cell from;

E∘cathode -  E∘anode

E∘cathode = -0.44 V

E∘anode = -2.37 V

Hence;

E∘cell = -0.44 V -(-2.37 V)

E∘cell = 1.93 V

n= 2 since two electrons were transferred

F=96,500C/(mol e−)

ΔG∘=−nFE∘

ΔG∘= -( 2 * 96,500 * 1.93)

ΔG∘= -372000 J or -372 KJ

4 0
2 years ago
Hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
n200080 [17]

Answer:

Explanation:

Hhhhhhhhhhhhhhhhhhhhh

5 0
2 years ago
Other questions:
  • Decide which of the following statements are True and which are False about equilibrium systems:A large value of K means the equ
    15·1 answer
  • As shown in the image above, the Earth's outermost layer is divided into several tectonic plates. Which of the following is true
    8·1 answer
  • How do muscles work in pairs to make parts of the body move?
    13·2 answers
  • Sodium tripolyphosphate is used in detergents to make them effective in hard water. calculate the oxidation number of phosphorus
    14·1 answer
  • Which of the following equilibrium systems most favors the products?
    10·2 answers
  • A reaction occurs in a calorimeter, resulting in the starting and final temperatures shown below. What can you say about the rea
    12·1 answer
  • Which states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are
    9·1 answer
  • Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
    10·1 answer
  • I NEED THIS NOW AND NO LINKS OR ILL REPORT
    14·2 answers
  • An individual is hospitalized and the initial blood work indicates high levels of hco3- in the blood and a ph of 7. 47. This wou
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!