Lenny

What factors motivated King Leopold of Belgium to seek ownership of the Congo region? http://en.wikipedia.org/wiki/L%C3%A9opold_II_of_Belgium Thank you for using the Jiskha Homework Help Forum. Hopefully you have a good history of the Congo. I'm sure we'v...

18 years ago

Describe briefly a general method that could be used to find the density of a substance. that the question im not quite sure of the answer some help would be nice.... thank you!

18 years ago

150 students sat exams. The following elements were calculated ΣFX = 10200 Σ(x-μ)F = 196348 Determine the number of students whose marks were within 2 standard deviations of the mean score

17 years ago

A Lesson Before Dying " I had gone to barbershops;I had stood on street corners, and i had gone to many suppers in the quarter.But i had never really listened to what was being said.Then i began to listen, to listen closely to how they taked about their h...

16 years ago

Simplify. -81^1/4

16 years ago

I am trying to cite an article in Rereading America, but it was written by the editors of the book. I am having a hardtime citing it. Also its suppose to be in MLA format.

16 years ago

In my chemistry lab we decomposed lead (iv) oxide by heating it and then placing a wooden splint(test the evloved gas) into the mouth of the test tube. The color changed into red lead ( Pb304).Then we reheated the sample again and it turned to PbO. I do n...

16 years ago

The molecular formula is: Na(s)+ H2O(l)---->NaOH(aq)+H2(g) This is showing a single displacement reaction.I am not sure how to show the complete ionic equation, this is what I have so far: Na+(s)+ H+ H+O2-(l)---->Na+OH-(aq)+H2+(g) Is this how you show it?

16 years ago

2Na(s) + 2H2O(l) ==> 2Na^+(aq) + 2OH^-(aq) + H2(g) What is the the net ionic equation because it doesn't look like their is any spectator ions.

16 years ago

Which requires more work - running around the block or walking around the block?

15 years ago

A race car traveling at 44 m/s is accelerated to a velocity of 22 m/s over an 11 s interval. What is the displacement of this time? (Could you show how you got the answer?) Thank you

15 years ago

what is the connection between the amount of albedo and energy absorbed?

15 years ago

Compare and Contrast the atomic theories proposed by Democritus and John Dalton.

14 years ago

The set of solution(s) of 2 cos^2 (θ) - 13 cos(θ) + 6 = 0 that is(are) in the interval (0,π/2) is one of following a. {π/6} b. {π/3} c. {π/4} d. {π/3, π/6} e. {π/6, π/4}

13 years ago

Which kind of light is used to carry information through optical fibers? A. fluorescent B. sodium-vapor light C. laser

12 years ago

Because light travels in a straight line and casts a shadow, Isaac Newton hypothesized that light is A. a stream of particles. B. a wave. C. heat.

12 years ago

What is the simplified form of the expression? -(8d - 3w) A. 8d - 3w B. -8d + 3w C. 8d + 3w D. -8d - 3w

12 years ago

What is the order of √5 , -0.1, -5/3 , 0.7, √2 from least to greatest? A. 0.7, √2 , -5/3 , √5 , –0.1 B. √5, √2 , 0.7, -5/3 , –0.1 C. -5/3 , –0.1, 0.7, √2 ,√5 D. –0.1, 0.7, √2 , √5, -5/3

12 years ago

A student was given 100mL of HCL solution in a 250mL beaker and told that the HCL was 0.11M. The student was also given phenolphthalein indicator and 250 ML of 0.1234 M NaOH. The student first filled a buret with NaOH solution. The student then placed an...

11 years ago

The min. energy needed to break a C-Br bond is 288000mol^-1. If one has access to laser with 3 output wavelengths 266,1065,800nm, which wavelength(s) can be used to break that bond? I keep getting 417nm for the wavelength (which is none of the outputs) bu...

11 years ago

In invierno tardio by antonio colinas what is he comparing his spirit to? No es increíble cuanto ven mis ojos: nieva sobre el almendro florido, nieva sobre la nieve. Este invierno mi ánimo es como una primavera temprana, es como un almendro floroido bajo...

10 years ago

What simplifying assumptions do we usually make in working problems involving equilibria of salts of polyprotic acids? Why are they usually valid? Answer by selecting all true statements. Are the answers: a,b,d,and f A)If the two ionization constants are...

10 years ago

In the recovery of iron from iron ore, the reduction of the ore is actually accomplished by reactions involving carbon monoxide. Use the following thermochemical equations, Fe2O2(s) + 3CO(g) ---> 2Fe(s) +3CO2(g) ΔH° = -28kJ 3Fe2O2(s) + CO(g) ---> 2Fe3O4(s...

10 years ago

Can you show or explain how to do this? Julio uses a scale of 1/8 inch= 1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?

9 years ago

Mrs. Johnson's kid is trying to drink with a straw that runs through an airtight cork in the top of a bottle of water. Please explain to her kid why he won't get any water.

8 years ago

If you suspend a 90-N rock beneath the surface of ethanol, the tension required to support it is only 60 N. What volume of ethanol (density of 789.2kg/cubic meter) must therefore be displaced? Show your work.

8 years ago

A ferry-boat is rectangular in shape, with an overall area of 30.0 m2. When the boat is loaded with gravel, it sinks to a depth of 2.8 m in the water. What is the total weight of the boat + gravel? Show your work.

8 years ago

An electron is located within an electric field, with a strength of 800N/C. What is the magnitude of the force on the electron?

8 years ago

A ball (mass of 0.5kg) is suspended on a string that is attached to the ceiling. The ball is charged with an unknown charge q. Determine the magnitude of the charge on the ball if the electric field strength is 2000N/C, and the string forms an angle of θ...

8 years ago

If point P(-3,5) is reflected in the line y=-5, what will be the coordinates of the reflection of point p

6 years ago

Compare and contrast the psycological theory of socialization to the sociological theory of socialization. Provide their similarities as well as there differences?

4 years ago

A box is to be made of a piece of cardboard 9 in ² by cutting equal squares out of the corners and turning up the sides. Find the volume of the largest box that can be made this way

3 years ago

The fox population in a certain region has a relative growth rate of 5% per year. It is estimated that the population in 2013 was 15,000. (a) Find a function n(t) = n0ert that models the population t years after 2013

3 years ago

That's what I would go with.

16 years ago

Is this correct? Colombo, Gary, Robert Cullen, and Bonnie Lisle. “Learning Power.” Rereading America: Cultural Contexts for Critical Thinking and Writing. Ed. Gary Colombo, Robert Cullen, and Bonnie Lisle. 7th ed. Boston: Bedford/St. Martin’s, 2007: 115-1...

16 years ago

It should be groups of not times

14 years ago

It is not incredible how much my eyes see It is snowing on the flowery almond tree It is snowing upon the snow. This winter my spirit is like an early spring, it is like a flowering almond tree (check that word floroido because there is no such word!) und...

10 years ago

is he comparing his spirit to winter or to spring? that is what i am having a hard time finding.

10 years ago

okay thsnks

10 years ago

Is this the right answer? Kb = 1E-14 / 1.6E-12 = 6.26E-3 x^2/-0.033 = 6.26E-3 x = 1.436E-2 pOH= -log(1.436E-2)= 1.84 pH= 14 - 1.84 = 12.16

10 years ago

x^1 - 6.25E-3 + 2.0625E-4 = 0 x = {-(-6.25E-3) +/- sqrt[(6,25E-3)^2 - (4*1*2.0625E-4)]}/(2*1) x = -1.089E-2 (Not x) or 1.714E-2 pOH = -log(1.714E-2 = 1.76 pH = 14-1.76 = 12.24

10 years ago

Is this correct? (x ^ 2) / 2.0 = 5.0 x 10 ^ -2 x = 3.162E-1 = [H +] = [H2PO3-] pH = -log (3.162E-1) = 0.50

10 years ago

Correction: 3Fe2O3(s) + CO(g) ---> 2Fe3O4(s)+ CO2(g) ΔH° = -59kJ Is this right? FeO(s) + CO(g) ---> Fe(s) +CO2(g) ΔH° = -28/2 ΔH° = -14

10 years ago

What did you do to get 275?

9 years ago

The other part was triangle ABC. Side A had the number 8, Side B had 10, and Side C has 16.

9 years ago

It’s actually 1.D 2.C 3.A 4.B 5.D On the quick check for connexus.

7 years ago

1. Ruby measures the heights of several species A, B, C, and D plants for a week under the same conditions and finds journal articles that describe the growth rates of each species. 2. 1.1 3. average plant height 4. the horse one

2 years ago

Your welcome lol, you're a savior!!!

2 years ago

another person is correct

2 years ago