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
In-s [12.5K]
3 years ago
5

Calculate the change in entropy of 3 moles of liquid water if you heat it from 5˚C to 95˚C. The molar heat capacity of liquid wa

ter is 75.38 J/molK. Please report your answer one point past the decimal with the unit J/K.
Chemistry
1 answer:
IceJOKER [234]3 years ago
4 0

<u>Answer:</u> The entropy change of the liquid water is 63.4 J/K

<u>Explanation:</u>

To calculate the entropy change for same phase at different temperature, we use the equation:

\Delta S=n\times C_{p}\times \ln (\frac{T_2}{T_1})

where,

\Delta S = Entropy change

C_{p} = molar heat capacity of liquid water = 75.38 J/mol.K

n = number of moles of liquid water = 3 moles

T_2 = final temperature = 95^oC=[95+273]K=368K

T_1 = initial temperature = 5^oC=[5+273]K=278K

Putting values in above equation, we get:

\Delta S=3mol\times 75.38J/mol.K\times \ln (\frac{368}{278})\\\\\Delta S=63.4J/K

Hence, the entropy change of the liquid water is 63.4 J/K

You might be interested in
H2O is polar covalent or its Hydrogen bond??? PLEASE HELP!!!
Annette [7]

Answer:

Polar covalent.

Explanation:

The covalent bonds are therefore polar, and the oxygen atoms have a slight negative charge (from the presence extra electron share), while the hydrogens are slightly positive (from the extra un-neutralized protons). Opposite charges attract one another.

6 0
3 years ago
Does the metals determine how high or low voltage is in fruit battery?
lesantik [10]

Answer: 1.788 volts.

Explanation:

To solve this problem we can combine battery cells to create higher voltages. Building more lemon batteries and connecting them with a metal wire from "+" to "-" adds the voltage from each cell. The two lemon batteries above, combine to produce a voltage of 1.788 volts.

3 0
3 years ago
Iridium IV sulfide formula
cestrela7 [59]

Answer:IrS subscript 2

Explanation:

5 0
4 years ago
How many moles of Ba(NO3)2 are there in 0.25 L of a 2.00 M Ba(NO3)2 solution?<br> Use mc007-1.jpg.
aleksandrvk [35]
Number of moles ( n )  = ?

Volume ( V ) = 0.25 L

Molarity of solution ( M )  = 2.00 M

n = M x V

n = 2.00 x 0.25

n = 0.5 moles of Ba(NO₃)₂

hope this helps!


7 0
3 years ago
Read 2 more answers
Why does organic chemistry have a wide variety from compounds primarily based on only two elements? please help
andreev551 [17]

Answer:

Explanation:  Organic chemistry have a wide variety from compounds of the presence of two elements namely

  • Carbon
  • Hydrogen

 Organic molecules comprises of multiple chains of carbon atoms with different  lengths and because of the ability of carbon to bond with many elements, This produces  a variety of compounds which no other atom or element can. The main variety of compounds exists in the combination of carbon and hydrogen forming hydrocarbons which are virtuall everywhere around us

4 0
3 years ago
Other questions:
  • Please help out a person
    6·1 answer
  • HELP ASAP! GIVING BRAINLIEST!! 15 POINTS
    15·1 answer
  • Calculate Delta H in KJ for the following reactions using heats of formation:
    10·1 answer
  • How is an atom's atomic mass number determined? How is an atom's atomic mass number determined? The atomic mass number is determ
    10·1 answer
  • If pressure is kept constant and the temperature of a gas is doubled, what will happen
    8·1 answer
  • Please, can anyone confirm that my answers are correct?
    9·2 answers
  • The study of the interaction of electrical and magnetic fields, and their interaction with matter, is called _____.
    10·1 answer
  • If the pressure of a 2.00 L sample of gas is 50.0 kPa, what pressure does the gas exert if its volume is decreased to 20.0 mL?
    9·1 answer
  • How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reacti
    10·1 answer
  • How many atoms are in 1.4 mol of phosphorus trifluoride (PF3)?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!