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
Alexxx [7]
3 years ago
8

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

lorimeter containing 57 g of water (specific heat 4.184 J/g*°C). The final temperature of the glass and water in the calorimeter was 119.2 °C. What was the initial temperature of the water?
39.84°C
79.68°C
119.84°C
139.68°C
Chemistry
2 answers:
Fudgin [204]3 years ago
6 0
119.84 c is the answer
Dimas [21]3 years ago
3 0

Answer : The final temperature of water is, 119.84^oC

Solution :

Q_{absorbed}=Q_{released}

As we know that,  

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

m_1\times c_g\times (T_{final}-T_2)=-[m_2\times c_w\times (T_{final}-T_1)]          .................(1)

where,

m_1 = mass of glass = 32.50 g

m_2 = mass of water = 57 g

T_{final} = final temperature  of water and glass = 119.2^oC

T_2 = initial temperature of water = ?

T_1 = initial temperature glass = 115^oC

c_w = specific heat of water = 4.184J/g^oC

c_g = specific heat of glass = 0.840J/g^oC

Now put all the given values in equation (1), we get

m_1\times c_g\times (T_{final}-T_2)=-[m_2\times c_w\times (T_{final}-T_1)]

(32.50g)\times (0.840J/g^oC)\times (119.2^oC-115^oC)=-[(57g)\times (4.184J/g^oC)\times (119.2^oC-T_1)]

T_1=119.84^oC

Therefore, the final temperature of water is, 119.84^oC

You might be interested in
PLEASE HELP ME! What are some patterns or trends that are present in the table of elements?
Sati [7]

Some patterns and trend that are present in the periodic table would be

1. electronegativity (from left-to-right it increases across the table)

2. ionization (from left-to right it increases and from bottom-to-top it increases)

3. electron affinity (same as ionization energy)

4. atom radius (increases opposite way; from right-to-left it increases and from top-to-bottom it increases)

5. melting point (higher melting points with metals and lower melting point with non-metals)

6. metallic character (same as atom radius)

5 0
3 years ago
Which process is an oxidation?
Zarrin [17]
<span>The problem has to do with oxidation states of the matter. The oxidation state of oxygen will always be -2 with the exception of peroxides which will have a state of -1. The overall balanced state of chemical compounds will be 0, so the oxidation state of Mn in MnO2 will be +4. The oxidation state of MnO4- will then be +7 to balance out to the negative one charge. The state change from +4 to +7 is 3, thus three electrons have to be lost in order for this to happen; a loss of a charge of -3 results in an increase of charge of 3. Oxidation is always the process of 'losing' electrons.

</span><span>E] MnO2(s) MnO4-(aq</span>
4 0
3 years ago
Why do atoms share electrons in covalent bonds??
ra1l [238]
Atoms in covalent bonds do combine so as to be stable. As covalent bond consist non metals e.g O2 in this example each atom has vacance of 2 orbitals/ electrons so shairing electrons result their stability
6 0
3 years ago
Read 2 more answers
what do Mars, Mercury, and Venus have in common? A. They have a gas surface composition and a thick atmosphere. b They have many
mario62 [17]

Answer:

the best guess would have to be C

3 0
2 years ago
Which of the following is not the same as 0.00684 kg? 0.0684 dkg,6.84 g, 684 cg, 6,840 mg,
lesya [120]
The Answer would be C.) 684 cg


8 0
3 years ago
Read 2 more answers
Other questions:
  • In the reaction Mg+Cl2=MgCl2 what should be the coefficient for Cl2
    13·2 answers
  • What happens to iron when iron oxide becomes elemental iron?
    7·2 answers
  • What is the freezing point of a solution of 0.500 mol of sucros in 500.0 mL of water?
    13·1 answer
  • Among the following, which atom is most likely to form an ion with a charge of 2+?
    6·1 answer
  • Which property of gases allows them to be stored at high concentrations in a bottle
    6·1 answer
  • HOW MANY MOLES ARE IN 2.6 X 1024 ATOMS OF SILICON?
    9·1 answer
  • Please Help Part B to question A
    13·1 answer
  • If the mass of an object is 20 kg and the acceleration is 5m/s2 . What is the force?
    5·1 answer
  • What is the equation used to calculate the density of a material?
    12·1 answer
  • Alan wants to identify an unknown solid compound. Which statement correctly describes a method he could use to identify the comp
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!