Wednesday
September 24, 2014

Posts by elvis


Total # Posts: 22

science(biology)
state three secondary functions of roots,stems and leaves
August 17, 2014

Science-Ms.Sue
B is right.
November 24, 2013

Geometry
87m=SA 45m=V
February 28, 2012

chemistry
The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out first order and changes ...
February 18, 2012

chemistry
The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out first order and changes ...
February 18, 2012

chemistry
For the reaction, A = B + C, the rate law is kA]. If it takes 80.0 seconds for 70.0% of a 10.0 gram sample of A to be transformed into products, what is the value of the rate constant? a. 0.00450 s-1 b. 0.0290 s 1 c. 0.00530 s-1 d. 0.0150 s-1 e. 5.40 s-1 chemistry - DrBob222, ...
February 18, 2012

chemistry
The units of a rate constant for zero, first and second order reactions are given in the textbook. If the time units are minutes, what would you expect the units to be for a third order reaction? a. 1/min3 b. mol2/L2-min c. L/mol-min2 d. L2/mol2-min e. L2/mol2-min2 help help! ...
February 18, 2012

chemistry
Given this data in a study on how the rate of a reaction was affected by the concentration of the reactants Initial Rate, RUN #(A, M) (B, M) (C, M) (mol L-1 s-1 1 0.200 0.100 0.600 5.00 2 0.200 0.400 0.400 80.0 3 0.600 0.100 0.200 15.0 4 0.200 0.100 0.200 5.00 5 0.200 0.200 0....
February 18, 2012

chemistry
A reaction has a rate law, rate = kA]B]^2 What is the overall order of the reaction? a. 2 b. 3 c. 0 d. 1 e. 4 chemistry - DrBob222, Friday, February 17, 2012 at 10:53pm The overall is the sum of the orders of each component. still dont get it but guessing A
February 18, 2012

chemistry
The reaction A + B + C = products has a rate law rate = kA]C]2. Which of the following will result in an increase in the rate constant for the reaction? #1 - increasing the temperature #2 - adding a catalyst #3 - doubling the concentration of reactant C a. only one of these (...
February 17, 2012

chemistry
The initial concentration of a reactant in a first order reaction is 0.620 molar. What will be its concentration after 3 half-lives? a. 0.0388 M b. 0.310 M c. 0.0775 M d. 0.155M e. 4.96 M thinkin c if not need a really good explaination of the real answer
February 17, 2012

chemistry
dosent answer the question?
February 17, 2012

chemistry
The half-life of a reaction was found to be inversely dependent on the concentration of the starting material. Thus, we can say that a. the reaction is zero order b. the reaction is first order c. the reaction is second order d. the reaction starts out first order and changes ...
February 17, 2012

physics
A 25mC charge is placed at the end of a meter stick and a 4.omC charge is placed at the 50cm mark.At what position on the line joining the two charges is the electric field zero?
February 3, 2012

Busiuness Law II
Using the Internet, identify three firms that are offering to enter into bailment contracts with customers. 2. For each firm, analyze and describe (a) for whose benefit the bailment would be and (b) the duty that the bailor would owe to the bailee. Be sure to include the ...
August 5, 2010

math
A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system is 8/pi cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.
March 31, 2010

math
Determine the length of a pendulum that has a period of 4 seconds.
March 31, 2010

arithmetic
A basket of fruit has 10 oranges,12 apples, and 18 peaches.Express in simplest form the fraction of fruit that are oranges.
December 14, 2009

college
1. A 2. B 3. B 4. A 5. A 6. B 7. A 8. A 9. B 10. B 11. A 12. A 13. A 14. B 15. A 16. B 17. B 18. A 19. B 20. A 21. A 22. B 23. B 24. A 25. A
November 24, 2008

6 grade math
u suck
October 17, 2008

Science
in what 2 waysdo plants contribute to the weathering of rocks
December 4, 2007

math
When you cross multiply you multiply 8 by x and 1240 by 100. Then you get 124000/8 and you get 15500
February 25, 2007

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