Ramon

A 0.150 block moving vertically upward collides with a light vertical spring and compresses it 4.50 before coming to rest. If the spring constant is 54.0 , what was the initial speed of the block? (Ignore energy losses to sound and other factors during th...

At the park the other day I saw 22 ducks and dogs.I counted 60 legs.How many of the animals were ducks and how many were dogs?

Suppose you roll two triangular pyramids each labeled 1 through 4 what are your chances of rolling a 5?

The pizza slices served at Connors pizza palace are1/4 off a whole pizza. There are 3 pizzaso ready to be served.14 children come in for lunch is there enough pizza for every child?

If the decomposition reaction of 1.4 M initial hydrogen peroxide (H2O2) occurs so that after 3 minutes, 0.83 M is left, what is the rate of the reaction? a. -0.019 M/s b. -0.012 M/s c. 0.0046 M/s d. 0.0032 M/s Please help! Thanks in advance.

Question 9 Unsaved What is the rate law for the following reaction, if the order of the reaction is m, an unknown? H2O2(aq) → H2O(l) + ½O2(g) a. k [H2O2]m b.k [H2O]m [O2]1/2 c.k [H2O] m /[H2O][O2 d.k[H2O] m [O2]m Thanks in advance. The k and m are meant t...

Which of the following statements is true if HI is formed in the following reaction? H2(g) + I2(g) → 2HI(g) a.There are no collisions between the reactants in the reaction. b. All of the collisions between reactants have enough energy to overcome the acti...

Which of the following rate constants corresponds to the reaction that converts reactants to products in the least amount of time? a. 4.48 x 10^-5 min^-1 b. 4.48 x 10^-5 s^-1 c. 0.0547 s^-1 d. 0.0547 min^-1

If the reaction H2 + Br2 2HBr has a rate law that can be described by k[H2][Br2]1/2, which series of reactions is a possible mechanism for the reaction? a. Br2 2Br (fast) Br + H2 HBr + H (slow) HBr + H + Br → 2HBr (fast) b. Br2 2Br (slow) Br + H2 HBr +...

What happens to the energy of the transition state when a catalyst is used? a. The energy increases b. The energy decreases c. The energy does not change d. The energy varies during the catalyzed reaction Thanks in advance, I appreciate it :)

Surface: Ea(kj/mol): Tungsten 248 Platinum 331 Copper 204 A decomposition reaction was studied on three different surfaces. The activation energy on each surface is shown in the table. Which surface represents the best heterogeneous catalyst if the activa...

If the slope of line for the kinetic data shown in the graph is -0.0952 and the initial concentration of reactant is 0.25 M, what is the rate of the reaction? Graph: . -2.0 . . -3.0 . ln[A] . -4.0 -5.0 0 5 10 15 20 Time (seconds) a. -2.63 s-1 b.-4.0 s-1 c...

What is meant by the 95% confidence interval of the mean?

I just want to thank DRWLS. I sent to Cramster and the answer was wrong several times by them. Again thanks for help.

4045.50

I see, thank you!. So it would be C right, 0.0547 s-1?

Im pretty sure its b. Lmk if its right

Formula please 😁

I haven't understand

8 caz i sad so.

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Let the number be x 13x + 2(x^2) = 84 13x + 2x^2 - 84 = 0 2x^2 + 13x - 84 = o 2x^2 +21x-8x -84=0 (X-4) (2x+21) =0 X=4 or x=-10.5