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
SIZIF [17.4K]
3 years ago
10

Suppose a substance has a heat of fusion equal to 45 calg and a specific heat of 0.75

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

The substance will be in liquid state at a temperature of 97.3 °C

Note: The question is incomplete. The complete question is given below :

Suppose a substance has a heat of fusion equal to 45 cal/g and a specific heat of 0.75 cal/g°C in the liquid state. If 5.0 kcal of heat are applied to a 50 g sample of the substance at a temperature of 24°C, what will its new temperate be? What state will the sample be in? (melting point of the substance = 27°C; specific heat of the solid =0.48 cal/g°C; boiling point of the substance = 700°C)

Explanation:

1.a) Heat energy required to raise the temperature of the substance to its melting point, H = mcΔT

Mass of solid sample = 50 g; specific heat of solid = 0.75 cal/g; ΔT = 27 - 24 = 3 °C

H = 50 × 0.75 × 3 = 112.5 calories

b) Heat energy required to convert the solid to liquid at its melting point at 27°C, H = m×l, where l = 45 cal/g

H = 50 × 45 = 2250 cal

c) Total energy used so far = 112.5 cal + 2250 cal = 2362.5 calories.

Amount of energy left = 5000 - 2362.5 = 2637.5 cal

The remaining energy is used to heat the liquid

H = mcΔT

Where specific heat of the liquid, c = 0.75 cal/g/°C, H = 2637.5 cal, ΔT = temperature change

2637.5 = 50 × 0.75 x ΔT

ΔT = 2637.5 / ( 50*0.75)

ΔT = 70.3 °C

Final temperature of sample = (70.3 + 27) °C = 97.3 °C

The substance will be in liquid state at a temperature of 97.3 °C

You might be interested in
How many valence electrons are in an atom of phosphorus
dezoksy [38]
5 Valence electrons .......... Hope it helps, Have a nice day:)
5 0
3 years ago
Read 2 more answers
An unknown gas is contained in a sealed container. Over time, the gas is gradually cooled until it becomes a solid. Determine wh
Alecsey [184]

Answer:D molecular attraction increases as temp decreases

Explanation:A,B would require data not available. C is missing. The question is a mess.

5 0
3 years ago
Read 2 more answers
How does calcium obey the octet rule when reacting to form compounds?
wolverine [178]
The answer is C. because it gives up two electrons.
8 0
3 years ago
Read 2 more answers
The best determinant of how an individual measures their quality of life is _______.
Ronch [10]
C is the correct answer
4 0
3 years ago
Read 2 more answers
Increasing order of unsaturation
Basile [38]

Whats the question? Im not sure what your asking

7 0
3 years ago
Other questions:
  • Please help thank you
    8·1 answer
  • What role does the wire play in voltaic cell?
    10·1 answer
  • When working with chemicals, many pieces of safety equipment need to be available in case of an emergency. Prior to beginning hi
    9·2 answers
  • What is one source for the variation that drives natural selection?
    11·2 answers
  • How many moles of HCl would react with 37.1 mL of 0.138 M Sr(OH)2
    12·1 answer
  • 3. Could a molecule<br> contain only one atom?
    11·1 answer
  • What volume of water must be added to 10.5 mL of a pH 2.0 solution of HNO3 in order to change the pH to 4.0 g
    15·1 answer
  • What is the relationship between thermal energy, kinetic energy and the transition between the three states of matter
    7·1 answer
  • Is cornstarch able to disintegrate in fire or an open flame?
    7·2 answers
  • how power station that produce electricity affect our environment what can we do to minimize these harmful effects?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!