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
dlinn [17]
3 years ago
7

Will the average vibrational energy of nitrogen gas (N2) at 22 c be greater than, less than, or equal to the average vibrational

energy of NaCl at 22 c?
Chemistry
1 answer:
AnnyKZ [126]3 years ago
4 0
Higher because N2 is a gas which will have higher vibrational energy than solid NaCl
You might be interested in
What is the volume of 60 g of ether if the density of ether is 70 g/mL
NNADVOKAT [17]
V = 60.0 g/ 0.70 g/mL = 85.7 mL Hope this helps! ;D
4 0
3 years ago
1.15 g of a metallic element needs 300 cm3 of oxygen for complete reaction, at 298 K and 1 atm
sashaice [31]
1) Calculate the number of moles of O2 (g) in 300 cm^3 of gas at 298 k and 1 atm


Ideal gas equation: pV = nRT => n = pV / RT


R = 0.0821 atm*liter/K*mol

V = 300 cm^3 = 0.300 liter

T = 298 K

p = 1 atm


=> n = 1 atm * 0.300 liter / [ (0.0821 atm*liter /K*mol) * 298K] = 0.01226 mol


2) The reaction of a metal with O2(g) to form an ionic compound (with O2- ions) is of the type


X (+) + O2 (g) ---> X2O          or   


2 X(2+) + O2(g) ----> X2O2 = 2XO     or


4X(3+) + 3O2(g) ---> 2X2O3


 
In the first case, 1 mol of metal react with 1 mol of O2(g); in the second case, 2 moles of metal react with 1 mol of O2(g); in the third, 4 moles of X react with 3 moles of O2(g)



So, lets probe those 3 cases.


3) Case 1: 1 mol of metal X / 1 mol O2(g) = x moles / 0.01226 mol

=> x = 0.01226 moles of metal X


Now you can calculate the atomic mass of the hypotethical metal:

1.15 grams / 0.01226 mol = 93.8 g / mol


That does not correspond to any of the metal with valence 1+


So, now probe the case 2.



4) Case 2:


2moles X metal / 1 mol O2(g) = x / 0.01226 mol


=> x = 2 * 0.01226 = 0.02452 mol


And the atomic mass of the metal is: 1.15 g / 0.02452 mol = 46.9 g/mol


That is similar to the atomic mass of titanium which is 47.9 g / mol and whose valece is 2+.


4) Case 3


4 mol meta X / 3 mol O2 = x / 0.01226 => x = 0.01226 * 4 / 3 = 0.01635 


atomic mass = 1.15 g / 0.01635 mol = 70.33 g/mol


That does not correspond to any metal.


Conclusion: the identity of the metallic element could be titanium.
5 0
3 years ago
Explain why the nucleus of an atom is positively charged but the overall charge of an atom is neutral
gtnhenbr [62]

Answer:

The nucleus is positively charged because it contains all of the protons however the charge of an atom is neutral because there is an equal amount of protons (positive) and electrons (negative) meaning the opposite charges cancel each other out therefore making the atoms overall charge neutral.

Explanation:

8 0
2 years ago
A hydrocarbon of pentane has two isomeric forms—n-pentane and iso-pentane. The molecular formula of the n-pentane is C5H12. Pred
Monica [59]
An iso pentane is an isomeric form of n-pentane. Isomers have same molecular formula but differ in the atomic arragement projected in 3D and the arrangement of atoms primarily resulting to a different set of properties. In this case, isopentane also has a molecular formula of an alkane <span>C5H12</span>
5 0
3 years ago
What are 5 most abundant elements in the Earth's crust​
allochka39001 [22]

Explanation:

Element Abundance percent by weight Abundance parts per million by weight

Oxygen 46.1% 461,000

Silicon 28.2% 282,000

Aluminum 8.23% 82,300

Iron 5.63% 56,300

4 0
3 years ago
Read 2 more answers
Other questions:
  • In the evolution of extremely large stars, they begin as supergiants or supernovas, if the star nucleus is large enough it will
    7·2 answers
  • A gas occupies a volume of 444 mL at 273 K and 79.0 kPa. What is the final kelvin temperature when the volume of the gas is chan
    6·2 answers
  • How many neutrons does an element have if its atomic number is 55 and its mass number is 150?
    13·2 answers
  • Write a checklist with at least three entries for how you can evaluate whether scientific information is reliable.
    14·1 answer
  • Atorvastatin is sold under the trade name Lipitor and is used for lowering cholesterol. Annual global sales of this compound exc
    6·1 answer
  • What is the period of a wave with a frequancy of 3 Hz and an amplitude off 0.01
    9·1 answer
  • 45.6 grams of CH4 is placed into a 275 mL container at 55.00C. What is the pressure inside the container in atm?
    10·1 answer
  • Which atom in each pair that has the largest atomic radius.
    14·1 answer
  • Is mixing baking soda and vegetable oil a chemical change or physical change and WHY? PLEASE HELP
    7·2 answers
  • Describe how intermolecular forces affect solvation.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!