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d. MS : Ms 13. The decay of 2M Seaborgium-266 (26Sg) takes 60 seconds to become a 4 of its original amount. What is...
12. Which set of units of A: the rate constant of first-order reactions, B: the rate...
12. Which set of units of A: the rate constant of first-order reactions, B: the rate constant of second-order reactions, and C: the velocity of second-order reactions is CORRECT? a. s? M -1 b. st M's : M's-1 : Ms :M -1 : Ms M's d. M's? 13. The decay of 2M Seaborgium-266 (Sg) takes 60 seconds to become a 4 of its original amount. What is the rate constant of this isotope? a. 0.006 b. 0.012 c. 0.023 d....
For a certain first-order reaction, is takes 2880 seconds for the concentration of the reactant to...
For a certain first-order reaction, is takes 2880 seconds for the concentration of the reactant to decrease to 25% of its initial value. What is the value for the rate constant (in s^-1) for the reaction? a) 2.9 times 10^-2 s^-1 b) 6.0 times 10^-3 s^-1 c) 4.8 times 10^-4 s^-1 d) 1.0 times 10^-4 s^-1
Please answer 2 3 and 4. thanks . 1. In this activity, we will be exploring...
Please answer 2 3 and 4. thanks .
1. In this activity, we will be exploring the relationship between the amount of a radioactive substance and the rate of decay. There are many forms of radioactive decay. For this activity we will be using beta (8) decay, when a neutron decays into an electron and proton, and gamma (7) decay, when an atom emits energy through a gamma photon. B- Decay y Decay High Energy+ Unstable Atom Neutron Low Energy+...
The integrated rate law allows chemists to predict the reactant concentration after a certain amount of...
The integrated rate law allows
chemists to predict the reactant concentration after a certain
amount of time, or the time it would take for a certain
concentration to be reached. The integrated rate law for a
first-order reaction is: [A]=[A]0e−kt Now say we are particularly
interested in the time it would take for the concentration to
become one-half of its initial value. Then we could substitute
[A]02 for [A] and rearrange the equation to: t1/2=0.693k This
equation calculates the time...
13 A 1.0 m radius grinding wheel takes 55 s to speed up from 20 rad/sto...
13 A 1.0 m radius grinding wheel takes 55 s to speed up from 20 rad/sto 11.0 rad/s. What is the wheels average angular acceleration? a 9 6 radis b. 4 8 radis c 16 radis d 0.33 rad's fit 14. A bowing ball has a mass of 80 kg a moment of inertia of 28 x 107 kg*mand a radius of 0.10 m rolls down the lane without slipping at a linear speed of 40 m/s, what is its...
1. A car, travelling at 30m/s slows to 10m/s in 5 seconds. What was the acceleration?...
1. A car, travelling at 30m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s B) 4m/s C).-2 m/s D). -9.8m/s 2. A ball thrown straight up takes 3 seconds to reach its maximum height. The height is most nearly B). 45m C). 60m D), 90 m A). 30m 3. A driver of a car wishes to pass a truck on the highway. Her car can accelerate at a constant 5m/s'. How long does it take...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value, what is the value for rate constant (in S-1) for the reaction? A) 2.0-104 s-1 B)9.6 x 10-4 s-1 C) 1.2 × 10-2 s-1 D)5.8 102s-1 12. In the first order reaction A → products, [A1-0.400 M initially and 0250 M after 15.0 mun, what willl after 175 min? e A) 1.67-10-3 M...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy C). Kinetic Energy D). Momentum 5. If the applied force is perpendicular to the motion of the object then the Work done by the force is ___ A). Negative B). Positive C). Zero 6. A car, travelling at 40m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s? B). -4m/s2 C).-2 m/s2 D). -9.8m/s 7. A ball thrown straight up...
1. The "wavelength" of a wave describes a. the speed of its crests b. the distance...
1. The "wavelength" of a wave describes a. the speed of its crests b. the distance between crests c. the height of its crests d. the frequency of its crests 2. Waves are important in physics because they carry a. energy b. frequency c. wavelength d. velocity 3. All waves a. transport energy through a vacuum b. have the same speed c. are part of the electromagnetic spectrum d. have wavelength, velocity and frequency 4. In the following list, which...
The circles below represent the conversion of molecule A (closed circles) to B (open circles). •...
The circles below represent the conversion of molecule A (closed circles) to B (open circles). • = A O=B t=0 s t = 10 s t = 20 s What is the correct stoichiometry of the reaction shown in the diagram? O a AB O b. A2B O c. ЗА ЭВ Od 2A →B Cannot be determined from the information given. For the reaction N205 - NO3 + NO2 the observed rate law is rate = k[N205]. If-dN205/dt = 0.20...
12. Which set of units of A: the rate constant of first-order reactions, B: the rate constant of second-order reactions, and C: the velocity of second-order reactions is CORRECT? a. s? M -1 b. st M's : M's-1 : Ms :M -1 : Ms M's d. M's? 13. The decay of 2M Seaborgium-266 (Sg) takes 60 seconds to become a 4 of its original amount. What is the rate constant of this isotope? a. 0.006 b. 0.012 c. 0.023 d....
For a certain first-order reaction, is takes 2880 seconds for the concentration of the reactant to decrease to 25% of its initial value. What is the value for the rate constant (in s^-1) for the reaction? a) 2.9 times 10^-2 s^-1 b) 6.0 times 10^-3 s^-1 c) 4.8 times 10^-4 s^-1 d) 1.0 times 10^-4 s^-1
Please answer 2 3 and 4. thanks .
1. In this activity, we will be exploring the relationship between the amount of a radioactive substance and the rate of decay. There are many forms of radioactive decay. For this activity we will be using beta (8) decay, when a neutron decays into an electron and proton, and gamma (7) decay, when an atom emits energy through a gamma photon. B- Decay y Decay High Energy+ Unstable Atom Neutron Low Energy+...
The integrated rate law allows
chemists to predict the reactant concentration after a certain
amount of time, or the time it would take for a certain
concentration to be reached. The integrated rate law for a
first-order reaction is: [A]=[A]0e−kt Now say we are particularly
interested in the time it would take for the concentration to
become one-half of its initial value. Then we could substitute
[A]02 for [A] and rearrange the equation to: t1/2=0.693k This
equation calculates the time...
13 A 1.0 m radius grinding wheel takes 55 s to speed up from 20 rad/sto 11.0 rad/s. What is the wheels average angular acceleration? a 9 6 radis b. 4 8 radis c 16 radis d 0.33 rad's fit 14. A bowing ball has a mass of 80 kg a moment of inertia of 28 x 107 kg*mand a radius of 0.10 m rolls down the lane without slipping at a linear speed of 40 m/s, what is its...
1. A car, travelling at 30m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s B) 4m/s C).-2 m/s D). -9.8m/s 2. A ball thrown straight up takes 3 seconds to reach its maximum height. The height is most nearly B). 45m C). 60m D), 90 m A). 30m 3. A driver of a car wishes to pass a truck on the highway. Her car can accelerate at a constant 5m/s'. How long does it take...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value, what is the value for rate constant (in S-1) for the reaction? A) 2.0-104 s-1 B)9.6 x 10-4 s-1 C) 1.2 × 10-2 s-1 D)5.8 102s-1 12. In the first order reaction A → products, [A1-0.400 M initially and 0250 M after 15.0 mun, what willl after 175 min? e A) 1.67-10-3 M...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy C). Kinetic Energy D). Momentum 5. If the applied force is perpendicular to the motion of the object then the Work done by the force is ___ A). Negative B). Positive C). Zero 6. A car, travelling at 40m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s? B). -4m/s2 C).-2 m/s2 D). -9.8m/s 7. A ball thrown straight up...
The circles below represent the conversion of molecule A (closed circles) to B (open circles). • = A O=B t=0 s t = 10 s t = 20 s What is the correct stoichiometry of the reaction shown in the diagram? O a AB O b. A2B O c. ЗА ЭВ Od 2A →B Cannot be determined from the information given. For the reaction N205 - NO3 + NO2 the observed rate law is rate = k[N205]. If-dN205/dt = 0.20...
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