A slightly bruised apple will rot extensively in about 4.5 days at room temperature (25.0°C). If it is kept in the refrigerator at 0.5°C, the same extent of rotting takes about 18 days. What is the activation energy for the rotting reaction? _____ J/mol
A slightly bruised apple will rot extensively in about 4.5 days at room temperature (25.0°C). If...
4. A slightly bruised apple will rot extensively in about 4.00 days at room temperature 25.0°C. If the same apple is kept in the refrigerator at 5.0°C, the same extent of rotting takes about 16.0 days. What is the activation energy for the rotting reaction?
A slightly bruised apple will rot extensively in about 2.0 days at room temperature (26.C). If it is kept in the refrigerator at 1.5 C, the same extent of rotting takes about 17 days. What is the activation energy from the rotting reaction? ...................... J/mol fyi( 5.9 J/mol was marked as wrong)
#14 Rate Constant and Temperature 1. The rate constant (k) for a reaction was measured as a function of temperature. A plot of lnk versus 1/T (in K) is linear and has a slope of -1.01 x 104 K. Calculate the activation energy for this reaction. 2. The rate constant of a reaction at 32.0oC is 0.0550 s-1. If the frequency factor is 1.20 x 1013 s-1, what is the activation energy? 3. A reaction has a rate constant of...
1- Room temperature is about 72 OF. What is room temperature in Kelvin? a) 22 K b) 273 K c) 295 K d) 345 K e) none of these. 2- A ball is thrown into the air. As it rises, there is an increase in its a) acceleration. b) velocity. c) kinetic energy. d) gravitational potential energy. e) momentum. 3- A force whose components you know acts on an object. It pushes 3.0 N in the +x-direction and 4.5 N...
An uncatalyzed reaction has a rate of 4.4 x 10-7 s–1 at room temperature (25 °C). When an enzyme is added the rate is 3.1 x 104 s–1. If the height of the activation barrier for the uncatalyzed rate is 28.6 kcal/mol, what is the height of the activation barrier for the catalyzed rate? Report your answer in terms of kcal/mol to the nearest tenths. Also, assume the pre-exponential terms for the uncatalyzed and catalyzed reactions are the same.
QUESTION 6 The half-life of a first-order reaction at 25,00 C is 2.00 days. What is the activation energy in J/mol if the same reaction has a rate constant of 32,242.22 s at 155.8 °C? (2 marks) (Glve answer to 3 significant figures in the form 1.23e+4 or 1.23e-4.) 2 points Save Answer -
A box contains about 5.57 × 1021 hydrogen atoms at room temperature 21◦C. Find the thermal energy of these atoms. Answer in units of J.
A box contains about 6.68 x 10^21 hydrogen atoms at room temperature 21 degrees C find the thermal energy of these atoms answers in J
Given that the initial rate constant is 0.0180s−1 at an initial temperature of 30 ∘C , what would the rate constant be at a temperature of 180. ∘C for the same reaction described in Part A? Express your answer with the appropriate units. (I solved this and got 2.01, which is wrong, but I'm not exactly sure why). (Reaction A was: The activation energy of a certain reaction is 44.3 kJ/mol . At 30 ∘C , the rate constant is...
MC7 The average kinetic energy of the molecules in a gas at room temperature is about 3.5 kJ/mol. How does this energy compare with the energy of a hydrogen bond in water? A. A hydrogen bond is about 10 times weaker B. A hydrogen bond is about 10 times stronger. C. Both values are more or less the same MC8 In homeopathy, a 20C dilution means 20 consecutive 100-fold dilutions. Suppose you start with a 1M solution of glucose. How...