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
fiasKO [112]
3 years ago
7

The temperature of a 6.0-g sample of glass changed from 20°C to 45°C when it absorbed 550 J of heat. What is the specific heat o

f this glass sample?
A. 130 J/g•°C

B. 2300 J/g•°C

C. 0.27 J/g•°C

D. 3.7 J/g•°C
Chemistry
2 answers:
sveticcg [70]3 years ago
5 0

The answer is D

the formula you need to use is Q=mc(delta)t the delta is usually written as a triangle

rearrange this to make c the subject as this is the specific heat capacity

so you get c=Q/(m*tempchange)

delta t means temp change btw

plug in you values so 550/(6*25)

and you get 3.666666

to 1 decimal place = 3.7

Feliz [49]3 years ago
4 0

Answer is: D/ 3.7 J/g.C

You might be interested in
Determine the value of the equilibrium constant for the following reaction, where the following amounts of each species are pres
dezoksy [38]

Explanation:

here's the answer to your question about

3 0
3 years ago
"how many molecules of carbon dioxide exit your lungs when you exhale 5.00 × 10−2 mol of carbon dioxide, co2?"
IrinaVladis [17]
We are going to use Avogadro's constant to calculate how many molecules of

carbons dioxide exist in lungs:

when 1 mole of CO2 has 6.02 x 10^23 molecules, so how many molecules in

CO2 when the number of moles is 5 x 10^-2

number of molecules = moles of CO2 * Avogadro's number

                                     = 5 x 10^-2  * 6.02 x 10^23

                                     = 3 x 10^22 molecules 

∴ There are 3 x 10^22 molecules in CO2 exist in lungs 
5 0
3 years ago
Read 2 more answers
Give the complete balanced equation for the reaction that occurs when lithium carbonate (LiCO3) is heated
Eva8 [605]
LiCO3-> LiO+ CO2
It is already balanced as there is one Li on each side, one C on each side and three Os on each side.
5 0
3 years ago
How does the concept of polarity relate to bond formation and molecular shape?
Ket [755]

Answer: heyyyooo

The bond polarity for each bond in a BH3 molecule is polar, due to the difference in electronegativities of the B and H atom. The molecular shape is trigonal planar, and the molecule is non-polar - because due to the symmetry of the molecule, the polarities cancel out.

Explanation:

hope this helps!

5 0
3 years ago
15. Discuss the various factors which affect the rate of evaporation. Latent heat
Georgia [21]

Answer:

The correct answer is liquid B.

Explanation:

Latent heat of vaporization also known as the latent heat of evaporation. This latent heat transforms the particles of liquid into a gas without affecting its temperature. For example, the latent heat of evaporation for water is 40.8 kJ per mole, that is, 40.8 kJ per mole of heat is needed to transform water into vapor at 373 K.  

It is known that latent heat of evaporation of a liquid is directly proportional to the cooling effect it generates, that is, more the latent heat of evaporation more will be its cooling effect. Thus, it is clear that liquid B will show the more cooling effect as the latent heat of evaporation of liquid B is more in comparison to liquid A. Thus, more heat will be captivated by liquid B and will generate more cooling effect in comparison to liquid A.  

8 0
3 years ago
Other questions:
  • What volume of 1.00 m lif solution is needed to provide 1.50 moles of lif?
    14·2 answers
  • In the following reaction, how many liters of carbon dioxide will be produced if 250 liters of oxygen is used in the combustion
    10·1 answer
  • Calculate the pOH of a 0.410 M Ba(OH)2 solution.
    7·1 answer
  • Why can carbon bond to many elements simultaneously? because its +4 valence forms ionic bonds because it has a natural ionic cha
    6·2 answers
  • Instructions:Select the correct answer. A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy
    10·1 answer
  • Alai is comparing the physical property of two materials. He is hitting each with a hammer to observe what happens. What physica
    15·2 answers
  • Which is the electron configuration for bromine?
    5·1 answer
  • Which has a higher melting point k2O or MgO???<br> Please hurry!!
    6·1 answer
  • An unopened, cold 2.00 L bottle of soda contains 46.0 mL of gas confined at a pressure of 1.30 atm at a temperature of 5.0 ℃. If
    8·1 answer
  • In the ground state an atom of which element has seven valence electrons.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!