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
Bumek [7]
3 years ago
11

A heat energy of 645 J is applied to a sample of glass with a mass of 28.4 g. Its temperature increases from –11.6 ∞C to 15.5 ∞C

. Calculate the specific heat of glass.
Chemistry
1 answer:
Anika [276]3 years ago
5 0
The heat that is required to raise the temperature of an object is calculated through the equation,
                        heat = mass x specific heat x (T2 - T1)
Specific heat is therefore calculated through the equation below,
                                specific heat = heat / (mass x (T2 - T1))
Substituting,
                                specific heat = 645 J / ((28.4 g)(15.5 - - 11.6))
The value of specific heat from above equation is 0.838 J/g°C. 
You might be interested in
Classify the following as homogeneous or heterogeneous mixtures, or pure
victus00 [196]

Explanation:

Sugar -  Pure substance

Magnesium Ribbon - Pure Substance

Vegetable soup  Heterogeneous mixture

Bath oil - Homogeneous mixture

Tin of assorted biscuits - Heterogeneous mixture

Peanuts and raisins - Heterogeneous mixture

Copper wire - Pure Substance

Bicarbonate of soda  (Baking soda)​ - Pure Substance

6 0
2 years ago
What scientist developed the Bohr model
Yakvenalex [24]
Niels Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level-- or orbit-- to another.
4 0
2 years ago
I need help with this :(
olga2289 [7]

Answer: 79.6 g

mwof 02 is 16 and mw of H2O is 18.

6 0
2 years ago
Which of the following molecules or ions is polar? #2
Elan Coil [88]

Third. Hope it helps!


5 0
3 years ago
A student took a calibrated 250.0 gram mass, weighed it on a laboratory balance, and found it read 266.5 g. What was the student
marta [7]

Answer:

\boxed{\text{6.60 \%}}

Explanation:

\text{Percent error} = \dfrac{\lvert \text{Measured - Actual}\lvert}{ \text{Actual}} \times100 \,\%

\text{\% error} = \dfrac{\lvert 266.5 - 250.0\lvert}{250.0} \times 100 \, \% = \dfrac{\lvert 16.5\lvert}{250.0} \times 100 \, \% = \dfrac{16.5}{250.0} \times 100 \,\%\\\\ = 0.0660 \times 100 \, \% = \textbf{6.60 \%}\\\text{The student's percent error is $\boxed{\textbf{6.60 \%}}$}

4 0
3 years ago
Other questions:
  • Simularities between nonmetals and metalloids?
    9·1 answer
  • During which of the fallowing chemical changes does a precipitate form??
    7·1 answer
  • Which best explains how the diffraction pattern observed in Young’s experiment supports the wave theory of light?
    8·2 answers
  • An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
    8·2 answers
  • A buffer solution is composed of 1.00 mol of acid and 2.25 mol of the conjugate base. If the p K a of the acid is 4.90 , what is
    10·1 answer
  • The smaller radius is primarily a result of the magnesium atom having ??
    11·1 answer
  • The rate constant for a particular second-order reaction is 0.47 M-1s-1. If the initial concentration of reactant is 0.25 mol/L,
    6·1 answer
  • A weather balloon contains 394 L of hydrogen gas at STP. How many moles of hydrogen are present?
    15·1 answer
  • What the recipe of momo​
    11·1 answer
  • Cerebrospinal fluid of the central nervous system and synovial fluid of joint capsules are both examples of _______.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!