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
Genrish500 [490]
3 years ago
5

The mass of a monoatomic gas can be computed from its specific heat at constant volume cV. (Note that this is not CV.) Take cV =

0.075 cal/g · C° for a gas and calculate (a) the mass of its atom and (b) the molar mass.
Chemistry
1 answer:
DaniilM [7]3 years ago
8 0

Answer:

a) 6.6*10^{-23}g

b) 39.74 g/mol

Explanation:

  1. We have specific heat at constant volume c_{V} = 0.075 cal/g
  2. if the monoatomic gas behaves as ideal gas, we can know the molar specific heat at constant volume C_{V} . For a monoatomical gas C_{V}=\frac{3}{2} R with R the universal gas constant. So C_{V}= \frac{3}{2} (1.987 \frac{cal}{mol*K})=2.9805 \frac{cal}{mol*K}[.
  3. We can calculate the heat with c_{V} or C_{V} as follows Q= m c_{V} \Delta T = n C_{V} \Delta T with m: mass and n: number of moles. So we can solve that equation for the molar mass (M=m/n) obtaining M = \frac{m}{n} = \frac{C_{V} }{c_{V} }.
  4. We can answer the question b) M=2.9805/0.075=39.74 g/mol
  5. With the molar mass and the avogadro's number (N_{Av}=6.022*10^{23} mol^{-1} we can calculate the atom mass as follows m_{atom} = \frac{M}{N_{Av} }
  6. Answer for the question a) is m_{atom} =\frac{39.74}{6.022*10^{23} }=6.6*10^{-23}g   
You might be interested in
What is the IMA of the 1 st class lever in the graphic given?<br><br> 2<br> 3<br> 0.5
Zina [86]

Answer:

I believe the answer isT 2.

Explanation:

he formula for IMA of a first-class lever is effort-distance/resistance-distance.

6 0
3 years ago
Read 2 more answers
Calculate the oxidation number of the iodine (I) in each compound: HIO4 = I2 = NaI = HIO3 =
Makovka662 [10]
1) in periodic acid (HIO₄), iodine has oxidation number +7, hydrogen has oxidation number +1, oxygen has -2, compound has neutral charge:
+1 + x + 4 · (-2) = 0.
x = +7.

2) in molecule of iodine (I₂), iodine has oxidation number 0, because iodine is nonpolar molecule.

3) in sodium iodide (NaI), iodine has oxidation number -1, sodium has oxidation number +1:
+1 + x = 0.
x = -1.

4) in iodic acid (HIO₃), iodine has oxidation number +5, hydrogen has oxidation number +1, oxygen has -2, compound has neutral charge:
+1 + x + 3 · (-2) = 0.
x = +5.
8 0
3 years ago
Read 2 more answers
How many sig figs in each?<br> -27.43<br> -1.90<br> -101
GarryVolchara [31]
1. Has 4 sig figs, all non zeros are significant
2. 3 sig figs trailing zero after a decimal
3. 3 sig figs
5 0
2 years ago
Describe how differences in temperatures cause the convection process in oceans.
Ilia_Sergeevich [38]

Answer:

The higher the temperature the more water evaporates and that affects the convection process

Explanation:

3 0
3 years ago
Read 2 more answers
What is the guiding formula for combustion reactions​
IgorLugansk [536]

Answer:

Explanation: so a combustion occurs when we react a substance with oxygen .you commonly call this "burning'' .therefore combustion will always include oxygen in the equation and the product will include carbon dioxide and give off water vapours

Therefore the general equation for a complete combustion reaction would be

Fuel + O2 ------ CO2 + H2O

8 0
3 years ago
Other questions:
  • Where do animals get glucose from
    5·2 answers
  • How much ice in grams would have to melt to lower the temperature of 360 mL of water from 45 ∘C to 0 ∘C? (Assume that the densit
    11·1 answer
  • The elements in groups 3-12 are known as:
    15·1 answer
  • What all separation methods are used in food industry ?
    10·1 answer
  • How will you known that you have reached the equivalence point when titrating the NaOH solution with HCl?
    7·1 answer
  • Compare the amount of carbon dioxide released in one year from burning coal to power 10, 65-watt incandescent bulbs with the amo
    7·1 answer
  • Please select the word from the list that best fits the definition Has three stages - evaporation, condensation, and precipitati
    14·2 answers
  • ANSWER ASAP AND I WILL GIVE BRAINLYEST!!!!
    6·2 answers
  • FeSO4 + KMnO4 + H2SO4
    10·1 answer
  • A chemical reaction produces 13.8 mol of CO What volume in liters will that gas occupy at STP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!