Asked Dec 10, 2019

a)Place the following gases in order of increasing average molecular speed at 0 degrees C: Ne, Ar, CO2, SO2, N2O, Cl2, HF, & HBr

b) Calculate root-mean-square speed of Ar(g) and HBr(g) @ 0 degrees C. (R=8.134 J/mol-K and 1 J = kg-m2/s2)


Expert Answer

Step 1

Part (a).

Molecular speed is inversely proportional to the molar mass of the molecule. Greater the molar mass lower is the molecular speed.

Molar mass of Neon = 20.17g/mol

Molar mass of Argon = 39.94g/mol

Molar mass of Carbon dioxide = 44.01g/mol

Molar mass of Sulfur dioxide = 64.06g/mol

Molar mass of N2O = 44.013g/mol

Molar mass of Cl2 = 70.90g/mol

Molar mass of HF = 20.01 g/mol

Molar mass of HBr = 80.91 g/mol

Step 2

Hence, the order of increasing molecular speed is


Step 3

Part (b).

Root mean square speed of A...


Image Transcriptionclose

3 x 8.314 x273 39.94 v =13.056m /s


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Physical Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Calculate the de Broglie frequency of an electron with a velocity of 5.0 x 10 -3 times the speed of ...

A: Velocity of electron is 5.0×10-3 times the speed of light.Mass of an electron is 9.11×10-31 kgde Bro...


Q: Based on the information below, what is the elemental symbol of this ion if it has 26 electrons?

A: A chemical or atomic symbol can be defined as the notation of one or more letters which are used to ...


Q: Hydrazine, N,H,, reacts with oxygen to form nitrogen gas and water. N,H,(aq) + O,(g) N,(g) + 2 H,O(1...

A: Given data:



A: The question is asking to calculate the enthalpy of the reaction by using given two reactions, react...


Q: Why is this the answer

A: Atomic number of Magnesium is 12. It has 12 total 12 electrons and its electronic configuration of M...


Q: Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium b...

A: Given,Mass of HBr = 6.5 gMass of NaOH = 1.8 gMass of NaBr produced = 1.20 gMoles of HBr and NaOH can...


Q: Calculate the molarity of a solution prepared by dissolving 4.11g of NaI in enough water to prepare ...

A: Molarity is the described as the number of moles present in 1 L solution. Molarity is expressed in m...


Q: What is the chemical name for SnO2?

A: Chemical names of compounds are written by first writing the name of cation followed by the name of ...


Q: Which of the following substances would be the most soluble in ccl4 A) CH3CH2OH B)H2O c)NH3 D)C10H22...

A: As a general rule for solubility, the more alike the solvent and solute particles are, the more solu...