# Elvis

Most popular questions and responses by Elvis
1. ## 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

2. ## math

the first difference between two consecutive terms of the sequence is 96. calculate the values of these two terms.

3. ## 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

4. ## Physics

A stone is projected upward at an angle of 30 degree to the horizontal from the top of a tower 100m and it hits the ground at a point q. If the initial veloity of projection is 100ms cal the maximum height of the stone above the groud

5. ## 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.

6. ## 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

7. ## Science

A coconut of mass 2kg is on a tree of 5m tall; determine the potential energy of this height Take g=10ms^-2.

8. ## 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.

9. ## engineering mathematics

A car of mass 500kg is travelling along a flat road. its engine provides a forward force of 300N. Air resistance is 200N. What will its acceleration be?

10. ## 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?

11. ## 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

12. ## engineering mathematics

A cyclist of mass 60kg rides a bicycle of mass 20kg. When starting off, the cyclist provides a force of 200N. What is his acceleration?

13. ## science

Calculate the energy required to vaporize 50g of water initially at 80¡ãC. ( specific heat capacity of water- 12jgk, specific heat of vaporization- 220jk

14. ## Maths

The third and fourth of a geometric progression are 4 and 8 respectively. Find the first and the common

15. ## 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

16. ## arithmetic

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

17. ## math

A Boy Is 6 years Younger Than His Sister.The Product Of Their Ages Is 135.Find The Ages

18. ## physic

Two boxes are connected by by a massless string over a massless, frictionless pulley. Box 1 has a mass of m1 = 15.0 kg and is initially at rest at the bottom of a frictionless surface inclined at an angle θ = 30.0◦ above the horizontal. Box 2 has a mass

19. ## math

Determine the length of a pendulum that has a period of 4 seconds.

20. ## physic

Two boxes are connected by by a massless string over a massless, frictionless pulley. Box 1 has a mass of m1 = 15.0 kg and is initially at rest at the bottom of a frictionless surface inclined at an angle θ = 30.0◦ above the horizontal. Box 2 has a mass

21. ## physic

A box with a mass of m = 7.50 kg is set on top of a spring with a spring constant of k = 500 N/m. The box is pushed down 30.0 cm and released. (a) What is the maximum height the box reaches after being launched by the spring? (b) What is the instantaneous

22. ## physic

A box with a mass of m = 7.50 kg is set on top of a spring with a spring constant of k = 500 N/m. The box is pushed down 30.0 cm and released. (a) What is the maximum height the box reaches after being launched by the spring? (b) What is the instantaneous

23. ## 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 don't get it but guessing

24. ## engineering mathematics

Write down 4 equations of horizontal linear motion and quantify them

25. ## science(biology)

state three secondary functions of roots,stems and leaves

26. ## 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.

27. ## 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

28. ## engineering mathematics

A car is travelling along the road at 8m/s. It accelerates at 1m/s/s for a distance of 18meters. How fast is it then travelling

29. ## 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

1. ## Physics

posted on October 16, 2017
2. ## life Orientation

risk behaviour

posted on August 24, 2017
3. ## chemistry

how carbon dioxide is form is bath bombs

posted on May 18, 2016
4. ## Math - Solving Trig Equations

posted on January 10, 2016
5. ## Math

the answer 0.5757575757... as a fraction

posted on October 5, 2015
6. ## math

4,1

posted on September 10, 2015
7. ## life orientation

I don't know help me

posted on March 8, 2015
8. ## Chemistry

A sample of gas occupies 29 L under a pressure of 1.3 atm. What ...

posted on December 4, 2014
9. ## Science-Ms.Sue

B is right.

posted on May 12, 2014
10. ## Geometry

87m=SA 45m=V

posted on March 28, 2014
11. ## chemistry

posted on February 18, 2012
12. ## math

When you cross multiply you multiply 8 by x and 1240 by 100. Then you get 124000/8 and you get 15500

posted on January 1, 2012
13. ## 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

posted on February 17, 2010