mendezmarco2004
18.10.2019 •
Chemistry
The speed of light is (2.998x108/3.00x109) meters per second.
Solved
Show answers
More tips
- H Health and Medicine What are Electronic Cigarettes? The Ultimate Guide...
- C Computers and Internet How to Get Rid of 3pic Infector: Everything You Need to Know...
- A Auto and Moto Experience the World of the Most Expensive Cars on the Planet...
- S Style and Beauty How to Get Rid of a Double Chin?...
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Chemistry
- C Chemistry What is every stored in atomic bonds called...
- C Chemistry Determine the oxidation states of the compound seo2...
- C Chemistry A0.334 g sample of an unknown halogen occupies 109 ml at 398 k and 1.41 atm. what is the identity of the halogen?...
- C Chemistry How many grams are in 4 liters of CuBr2?...
- C Chemistry Please its very important (i need to pass this please)...
- C Chemistry PLEEAASSEE HELP ITS ALREADY WAY PAST DUE AND ILL GIVE BRAINLIEST Which of the following would be the evidence of a physical change? A. unexpected change in odor B. change...
- C Chemistry Changing between what two energy levels would release the biggest quantum of energy?...
- C Chemistry 2. A solution is made by dissolving 3.88 g of NaCl in enough water to make 67.8 mL of solution. What is the concentration of sodium chloride in units of weight/volume percent?...
- C Chemistry How long does it take for a 12.62g sample of ammonia to heat from 209k to 367k if heated at a constant rate of 6.0kj/min? the melting point of ammonia is 195.42k and the...
- C Chemistry Ineed on how to convert 5.0x10^24 molecules to liters...
Ответ:
The speed of light is (2.998x108/3.00x109) meters per second = 300,000 kilometers per second.
Ответ:
k₂ = 5 x 10⁻² s⁻¹
Explanation:
Using the Clausis - Clapyron Equation ...
ln(k₁/k₂) = ΔH/R(T₁-T₂/T₁·T₂) => lnk₂ = lnk₁ + ΔH/R(T₁-T₂/T₁·T₂)
k₁ = 6.4 x 10⁻³s⁻¹
ΔH = 33.6 Kj/mole
R = 0.008314 Kj/mol·K
T₁ = 25°C = 298K
T₂ = 75°C = 348K
lnk₂ = ln(6.4 x 10⁻³s⁻¹) + (33.6kj/mol·K/0.008314Kj/mol·K)·[(348K - 298K)/(348K)(298K)] = -3.10s⁻¹
k₂ at 75°C = exp(-3.10) = 5 x 10⁻²s⁻¹ (faster k-value at higher temp)