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
m_a_m_a [10]
2 years ago
13

The specific heat capacity of silver is 0.235 J/g ∙ K. Its melting point is 962 °C, and its enthalpy of fusion is 11.3 kJ/mol. W

hat quantity of energy, in joules, is required to change 9.70 g of silver from a solid at 25 °C to a liquid at 962 °C?
Chemistry
1 answer:
likoan [24]2 years ago
3 0

<u>Answer:</u> The total heat required for the conversion process is 1228.5 J

<u>Explanation:</u>

The processes involved in the given problem are:  

1.)Ag(s)(25^oC,298K)\rightarrow Ag(s)(962^oC,1235K)\\2.)Ag(s)(962^oC,1235K)\rightarrow Ag(l)(962^oC,1235K)

  • <u>For process 1:</u>

To calculate the amount of heat absorbed, we use the equation:

q_1=m\times C_{p,l}\times (T_{2}-T_{1})

where,

q_1 = amount of heat absorbed = ?

C_{p,s} = specific heat capacity = 0.235 J/g.K

m = mass of silver = 9.70 g

T_2 = final temperature = 1235 K

T_1 = initial temperature = 298 K

Putting all the values in above equation, we get:

q_1=9.70g\times 0.235J/g.K\times (1235-298)K=213.6J

  • <u>For process 2:</u>

To calculate the amount of heat released, we use the equation:

q_2=m\times L_f

where,

q_2 = amount of heat absorbed = ?

m = mass of silver = 9.70 g

L_f = latent heat of fusion = 11.3 kJ/mol = \frac{11300J/mol}{108g/mol}=104.63J/g   (Conversion factor:  1 kJ = 1000 J; Molar mass of silver = 108 g/mol)

Putting all the values in above equation, we get:

q_2=9.70g\times 104.63J/g=1014.9J

Total heat required for the conversion = q_1+q_2

Total heat required for the conversion = [213.6+1014.9]J=1228.5J

Hence, the total heat required for the conversion process is 1228.5 J

You might be interested in
How can the pH of a solution be calculated if the pOH is known?
daser333 [38]

the answer is d guys


4 0
3 years ago
Read 2 more answers
Why do crystals form during crystallisation
Mazyrski [523]

Answer: Crystallization is a technique which chemists use to purify solid compounds. Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. The process is based on the principles of solubility: compounds (solutes) tend to be more soluble in hot liquids (solvents) than they are in cold liquids. If a saturated hot solution is allowed to <u>cool</u>, the solute is no longer soluble in the solvent and forms crystals of pure compound. Impurities are excluded from the growing crystals and the pure solid crystals can be separated from the dissolved impurities by filtration.
For an example the salt we get from seawater can have many impurities in it. Hence, the process of crystallization is in use to remove these impurities.

∩_∩
(„• ֊ •„)♡
┏━∪∪━━━━┓
   hope it helped
┗━━━━━━━┛

3 0
2 years ago
Read 2 more answers
Pentaoxygen monochloride formula​
kicyunya [14]

Answer:

Explanation:

O5Cl

6 0
3 years ago
What causes acid rain is it hydroelectric energy is it fossil fuels or is it geothermal energy
Vladimir79 [104]
Hydroelectric energy is best answer
5 0
3 years ago
Read 2 more answers
In the industrial synthesis of hydrogen, mixtures of CO and H2 are enriched in H2 by allowing the CO to react with steam. The ch
saw5 [17]

Answer:

CO(g) + H2(g) + H2O(g) ==> CO2(g) + 2H2(g)

Explanation:

In the industry, hydrogen is prepared from water and hydrocarbons. Water gas being the major method of preparation of hydrogen industrially.

The water-gas reaction is an industrial process in which steam is passed over red-hot coke giving a gaseous mixture of carbon monoxide and hydrogen:

C + H2O(g) → CO + H2.

The mixture of CO and H2 is Futher passed through steam according to the equation:

CO(g) + H2(g) + H2O(g) ==> CO2(g) + 2H2(g) to give hydrogen and carbon dioxide.

8 0
3 years ago
Other questions:
  • A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a ca
    8·2 answers
  • Based on the following thermodynamic data, calculate the boiling point of ethanol in degrees Celsius. Substance ΔH∘f (kJ/mol) S∘
    5·1 answer
  • What is the molar mass of BaBr2?
    8·2 answers
  • Scientists classify rocks into three different types. What is the main basis for the classification system they chose? color of
    7·2 answers
  • A _______ is formed when tectonic plates collide.
    8·1 answer
  • A sailor on a trans-Pacific solo voyage notices one day that if he puts 375. mL of fresh water into a plastic cup fresh water we
    8·1 answer
  • How many chloride ions are in 1.5 moles of aluminum chloride?
    13·1 answer
  • Determine the molar mass of Ze(NO3)2. (Ze=55.85 N=14.01 O=16.00) *<br> Help
    7·1 answer
  • When a predator population increases what happens to the prey population? Increase Decrease Dies Stays the same
    9·1 answer
  • How many valence orbitals does Cl have?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!