# Questions Asked onApril 14, 2013

1. ## chemistry

Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing indium and cadmium: This is what I have so far: anode: In(s) --> In^3+ + 3e- cathode: Cd^2+ + 2e- --> Cd (s) Need help writing the

2. ## chemistry

A voltaic cell that uses the reaction Tl3+(aq) + 2 Cr2+(s) ¨ Tl+(aq) + 2 Cr3+(aq) has a measured standard cell potential of +1.19 V. determine E‹red for the reduction of Tl3+(aq) to Tl+(aq).

35. ## Chemistry

Calculate the pH of a buffer solution that contains 0.60 M NaH2PO4, and 0.26 M Na2HPO4.

36. ## physics

A solid block of mass m2 = 8.3 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring. The other end of the spring is fixed, and the spring constant is k = 210 N/m. Another solid block of mass m1 = 12.4 kg and speed v1 = 4.9 m/s

37. ## U.S/history AP

A)-Outspken proponent of women's rights and helped the below women organize the seneca falls convention. B)a prominent advocate of women's rights.She organized the seneca falls convention with the person above.Her husband wholeartedly supported her views

38. ## calculus

8). Part 1 of 2: In the solid the base is a circle x^2+y^2=16 and the cross-section perpendicular to the y-axis is a square. Set up a definite integral expressing the volume of the solid. Answer choices: integral from -4 to 4 of 4(16-y^2)dy, integral from

39. ## chemistry

how would you solve the mass of sucrose, C12H22O11, that is needed to make 550ml of a 0.25M solution?

42. ## Chemistry #2

If 100.0 g of water at 90'C is added to 50.0 g of water at 10'C, estimate the final temperature of the water. explain your reasoning. please my last question i really don't get it, :/

43. ## Math

If alpha and beta are the zeros of the polynomial ax^2 + bx + c then evaluateA. (alpha)^2 / beta + (beta)^2 / alpha B. alpha^2 .beta + alpha.beta^2 C. 1/(alpha)^4 + 1/(beta)^4. Please work the complete solution.

44. ## spanish

que comen las personas en un banquete de quinceanera en peru

45. ## Trigonometry

wheels on a skateboard are 3.63 inches. If the skateboarder is travelling down a hill at 23 miles per hour what is the angular velocity.

46. ## Physics

A satellite circling the earth completes each orbit in 5.10 x 10^3 s. What is the gravitational field strength @ the location of the satellite's orbit?

47. ## Physics

A satellite circling the earth completes each orbit in 5.10 x 10^3 s. What is the gravitational field strength @ the location of the satellite's orbit?

48. ## chem

If it takes 84.2 min for the concentration of a reactant to drop to 20.0% of its initial value in a first-order reaction, what is the rate constant for the reaction in the units min-1?

49. ## precalculus

A model airplane 50 feet above the ground is flying away from an observer. Find the angle of elevation theta of the plane as a function of the distance from the observer to the plane. What is theta when the plane is 300 feet from the observer?

50. ## Physics

A 100 W lamp is connected to 120 V, and its current is measured. A resistor is added to the lamp to reduce the current to half its original value. (a) What is the potential difference across the lamp? (b) How much resistance was added to the circuit? (c)

51. ## Algebra

Find the distance d(P1,P2) between the points P1 and P2 P1=(-1,5);P2=(2,4) d(P1,P2)=

52. ## Principal of Math

a tree casts a shadow 29m long. at the same time the shadow cast b a 61cm tall statue is 82cm long. find the height of the tree. round results to the nearest unit.

53. ## Math

A tower stands on a 20 degree slope. From a point 45 m directly up the slope. The angle of elevation of the top of the tower is 10 degrees. How tall is the tower?

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???

55. ## Alg 1

The rectangular has an area of 5400 cm^2. What is the value of w? 5400 = (w)(2w - 30) 5400 = 2w^2 - 30 w 5400 = 2w(w - 15) Now I am stuck. My choices are: -45 cm 45 cm 60 cm 90 cm What do I need to do next to get the correct answer? Thanks.

56. ## Science

Explain why would a bottle that is left overnight with water is crack but a empty bottle would not.

57. ## Parametric Equations

Find the length of the curve over the given interval: x=t+1 y=ln cos(t) for t=0 ---> t=pi/4

58. ## Life orientation

Ways in which the lack of physical fitness and proper nutrition impacts ön teens

59. ## math

a scale model of a building is 8in.by12in.the scale is 1in.by 15ft.what are the dimensions of the actual building

60. ## math

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???

61. ## Conversion Math

A dipole of 1 Debye is equal to 3.33 x 10^-30 C m . Show that in atomic units 1 D = 0.39345 au.

62. ## pre ap physics

A) A small cork with an excess charge of +9.0x10^-6 is placed 0.13 m from another cork, which carries a charge of −3.2x10^-6. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 × 10^9 N • m^2/C^2. Answer in

63. ## Physics

11-098-satellite_and_junk.jpg A spherical satellite of radius 4.6 m and mass M = 195 kg is originally moving with velocity vsatellite,i = < 3000, 0, 0 > m/s, and is originally rotating with an angular speed ?1 = 2 radians/second, in the direction shown in

64. ## Chemistry

What is the PH of a buffer made by adding 8.20 grams of sodium acetate(NaCH3CO2) to 500 ml of 0.10 M acetic acid(CH3CO2H). Ka for acetic acid is 1.8 x 10^-5.

65. ## pre calculus

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)/(sec^2 x))-1 = (f(x))^2 f(x)= ??

66. ## Science need help ?????///

An astronomer observes two galaxies, A and B, which have redshifts of: Galaxy A = 0.020 and Galaxy B = 0.010. Which galaxy is closest to us and what is its distance away from us? You may assume that the Hubble constant is H0 = 75 km s–1 Mpc−1 and that

67. ## math

Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?

68. ## Chemistry

What is the hydronium ion concentration in a solution 0.150M in HNO2 and 0.300M in NaNO2? Ka = 7.24E-4

69. ## MATH

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???

70. ## Alg 1

A box shaped like a rectangular prism has a height of 17 in. and a volume of 2720 in^3. The length is 4 inches greater than twice the width. What is the width of the box? Please solve and explain what I need to do. The choices are: -10 8 20 40

71. ## Life-orientation

Ten(10) ways in which water pollution can impact negatively on one's health.

72. ## precalculus

For each of the following determine whether or not it is an identity and prove your result. a. cos(x)sec(x)-sin^2(x)=cos^2(x) b. tan(x+(pi/4))= (tan(x)+1)/(1-tan(x)) c. (cos(x+y))/(cos(x-y))= (1-tan(x)tan(y))/(1+tan(x)tan(y)) d.

73. ## BIO

3. Fish have a two chambered heart called a single loop. discuss the benefits and drawbacks of this system. 4. Amphibians have a three chambered heart. Discuss the importance of the extra chamber in terms of the obvious physical differences that amphibians

asked by SOMEONE HELP THIS PERSON
74. ## algebra

the elspaso middle school girls basketball team is going from el paso to san antonio for the texa state championship. The trip will be 560 miles. Their bus travels at an average speed 60 miles per hour.

75. ## Math

The mean time to complete a certain stat quiz is 25 minutes, with a standard deviation of 5 minutes. Find the probability of a student taking. 1.) less than 15 minutes. 2.) Between 15 and 25 minutes. 3.)more than 25 minutes.

76. ## maths

a dam holds 13.5 megalitres of wate when full. If water flows from the dam at the rate of 5 litres per second, approximately how long will it take to empty the dam.

77. ## calculus

10). Find the area of the region bounded by the graph of f(x)=4lnx/x, y=0, x=5.8 11). Find the area of the region bounded by x=y^2-1y, x=0

78. ## anthropology

Chiefdoms are characterized by all of the following except

79. ## math

In right triangle ABC, a = 52 ft and c = 63 ft. Which of the following trig ratios of angle B, would combine the given sides?

80. ## physics

A spring is extended 4mm by an applied force of 2.0N. a)What is its spring constant? b)How much would it extend if a load of 150g was suspended from it?

81. ## kaplan

Quixote Consulting dustin larkin ratio sheet

82. ## math

Marty walks to school 4 days each week. The walk talks 15 minutes. How much time does it take marty to walk to school & home each week. Is this correct? 15×4=60 it takes him an hour each week

83. ## geometry

in the diagram below of quadrilateral abcd ac is a diagonal that biscets

84. ## Math

Find the distance between the points with polar coordinates (3, 120°) and (0.5, 49°)? Is the answer 2.88?

85. ## math

A fair coin is tossed 10 times. What is the probability of getting exactly 6 heads?

86. ## Life orientation

What are the 5 factors contributing to the lack of physical fitness and proper nutrition in the adolescents

87. ## math

Suppose you had a slice of pizza that was cut from a 16” pizza. You measure the angle that it was cut at to be 0.6 radians. EXPLAIN how you could find the length of the crust on the slice of pizza. *

88. ## Chemistry

radioactive sodium chloride is appropriate for diagnosing circulatory problems, but radioactive xenon is helpful in searching for lung problems. Explain why. I understand different elements are used for specific parts of the body but I don't understand

89. ## Chemistry

* Fixed Question What is the PH of a buffer made by adding 8.20 grams of sodium acetate(NaCH3CO2) to 500 ml of 0.10 M(molarity) acetic acid(CH3CO2H). Ka for acetic acid is 1.8 x 10^-5.

90. ## Physics

A coil consists of N=10^5 turns of wire wrapped uniformly around a plastic torus. The inside radius of the torus is r0=0.15 m and the outer radius is r1=0.16 m. Thus, each winding has a diameter d=0.01 m. What is the self-inductance (in H) of this coil?

91. ## principals of math

a triangle drawn on a map has sides of lenghts 7.0 cm, 11 cm, and 15 cm. the shortest of the corresponding real-life distances is 123km. find the longest of the real-life distatnces. round to the nearest unit.

92. ## English

1. Jenny's family are/is following her. She is taking a walk with her family. 2. Yujin is watering plants with a watering can. Her brother is digging with a trowel. Her father is also watering plants with a watering pot. What is Yujin doing? She is

93. ## physics

'a weather station monitors a storm using a radar system. the radio wave pulse emitted is received back at the transmitter after 0.34 ms. the wavelength emitted was 5.6 cm and that received after reflection from the storm was 1 billionth of a meter longer.

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???

A spring is extended by 4mm when a load of 2.N was applied. a)What is its spring constant? b)How much would it extend if a losd of 150g was suspended from it?

96. ## precalc

1. A plane is headed at 122 degrees with an air speed of 350mph in a wind that is blowing from 38 degrees. Find the ground speed of the plane and the speed of the wind if the actual flight was at 133 degrees. 2. A plane is heading at 20 degrees at 300mph

97. ## sine and cosine

Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?

98. ## social studies

did germany take over sweden in WW2

99. ## Social studies

Trace the historical origin of social studies in Russia,USA and Brittin

100. ## Math

What is 8/9 as a percent, as a decimal, and a decimal rounded to two places?

101. ## math

Given: f(closure(A)) subset of closure(f(A)) Prove: For any closed set A in Y, f^-1(A) is closed in X (AKA f is continuous) X and Y are metric spaces f: X -> Y f^-1 is f inverse. closure(A) = A U limit points of A The first line is Let C be a closed subset

102. ## Scoence

Explain why would a bottle that is left overnight with water is crack but a empty bottle would not.

103. ## Math

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)/(sec^2 x))-1 = (f(x))^2 f(x)= ??

104. ## U.S/history AP

he War of 1812- also called the second war of American Independence or by its opponents the derisive (----) . U.S.declared war on Britain because they did not recognize our neutrality and interfered with our freedom of the(-----)shipping My answers are:

160. ## calculus

3). The shaded region is bounded by the y-axis and the graphs of y=1+√x, y=2. Find the volume of the solid obtained by rotating this region around the x-axis. Answer choices: 7/6pi, 4/3pi, 11/6pi, 5/3pi, 13/6pi, 5/6pi 4). Find the area of the region

161. ## algebra

In the early months of some year, one site added 0.6 million new accounts every day. at this rate, how many days would be needed to add 30 million new accounts?

162. ## psychology

Perceptions are linked to sensations. what happens when we get overloaded from our senses and how would that overload impact perceptions?

163. ## L O

Recommendations on how to address HIV/AIDS

164. ## chemistry

how do I carry out qualitative analysis on (NH4)2SO4.FESO4.6H20

165. ## Life orientation

Which institution or organisation involved in supporting or giving redress to substance abuse?

166. ## Chemistry

If the pressure is 10.0 atm, what is the temperature? If a 2.53-L container is filled with 169 g argon

167. ## arithmetic

play 160 games and won 60% how many games did the team win

168. ## Math

Graph y = ½ x^2 – x +3 for 0≤x≤6 Calculate the mid- ordinates for 5 strips between x = 1 and x 6, and hence use the mid-ordinate rule to approximate the area under the curve between x = 1, x = 6 and the x- axis. assuming that the area determined by

169. ## English

1.If she were or was Please explain the rules. 2. When do you use can not and cannot or everyone and every one? Rules?

170. ## tax accounting

purchased a bond on August 15, 2012 for $2,100.$200 of the purchase price represented accrued interest. She received $210 in interest income on the bond on December 1, 2012. What is the proper treatment of the$210 interest income for federal income tax

171. ## english plzzzzzzzzz helppppp

1The people i love the best 2jump into work head first 3without dallying in the shadows 4and swim off with sure strokes aost out of sight 5They seem to become natives of that element 6the black sleek heads of seals bouncing like half-submerged balls 7 i

172. ## algebra

(3x-2y)square=?

173. ## english plzzzzzzzzz helppppp

1-Our small community hasn't never had so many choices of bicycle shops. a-Our small community has hardly never had so many choices of bicycle shops. b-Our small community has never had so many choices of bicycle shops. c-Our small community hasn't hardly

174. ## englsih

Usually, the koi pond is quiet, a lovely place for daydreaming or planning. 22-Nature gives us many gifts, but this one is nice. As i breathe in the sweet air and absorb the appearance of the area, I relax.My senses are keen and filled with a variety of

175. ## life orientation

what can thembi do to deal with the unethical behavior

176. ## college english

my professor want's us to write an abstract proposal on our reserch topic " Is our food safe to eat?" BUT we did not write our papers yet,so can someone help me how to set it up

177. ## math

Bill sees that the shadow of a flag pole is about four times as long as his shadow. If Bill if about 5 1/2 feet tall, about how tall is the flag pole?

178. ## math

Can a right triangle have sides of length 1, 7, and 5 to the square root of 2? Justify your answer.

179. ## english

Her gaze was a laser to his heart this metaphor means that a-grandmother was trying to scare him b-grandmothers stare made him feel guilty c-grandmothers look gave him a heartburn d-grandmother stared directly at his chest 1-c or d

180. ## accounting

Hillsborough Co. has an available-for-sale investment in the bonds of Schuyler with a carrying (and fair) value of $85,540. Hillsborough determined that due to poor economic prospects for Schuyler, the bonds have decreased in value to$ 59,710. It is

181. ## Math

28a^11b^7/4a^3b

182. ## Find the distance

Find the distance d(P1,P2) between the points P1 and P2 P1=(-1,5);P2=(2,4) d(P1,P2)=

183. ## HSS

How the Swahili language came being

184. ## Calculus

Find the derivative of y = (e^x-e^-x)/2

185. ## government

The "long tail" is a phenomenon related to

186. ## English

1. He is riding a roller board. 2. He is in the air on the roller board with his arms spread in the picture. 3. Talk with your partner and check the Yes box if your partner likies the activity. If your partner doesn't like the activity, check the no box.

187. ## Biology

Dinosaurs were reptiles that grew to enormous sizes. What may an evolutionist hypothesize about the oxygen content of the environment during the age of dinosaurs?

188. ## Biology

Dinosaurs were reptiles that grew to enormous sizes. What may an evolutionist hypothesize about the oxygen content of the environment during the age of dinosaurs?

189. ## english

irony a-grandma doesnt believe her grandsons story b-schoo lpricipal sees a student break into a locker c-person !@#\$%^&claims an item from a thief is accused of stealing d-person who loses something doesnt want it back 1-d then c

190. ## english

Her gaze was a laser to his heart this metaphor means that a-grandmother was trying to scare him b-grandmothers stare made him feel guilty c-grandmothers look gave him a heartburn d-grandmother stared directly at his chest 1-b

191. ## social studies

NEED HELP ON THIS QUESTION Discuss the relation of democracy to globalization. What, in your view, does the future hold in this regard?

192. ## math

form the quadratic equations whose roots are(A:5 and -1/3

193. ## calculus

Find the length of the curve over the given interval: x=t+1 y=ln cos(t) for t=0 ---> t=pi/4

194. ## commerce

identify and describe three environmental health hazards that cause illhealth,crises and disasters

195. ## philosphy

I am to draft a six to eight page paper based upon a life changing decision that I or someone in my community had to make. I am considering writing about returning back to school but I am stuck on how to get started. Can someone please help.

196. ## precalculus

Solve the equation cos(2x)cos(x)+sin(2x)+sin(x)=1 for all values of x.

197. ## Math

The minute hand is 12 feet long, but the clock face is 22 feet in diameter. If the minute hand were twice as long, how much farther would it travel every hour?

198. ## arithmatic

forty six point two multiply by ten minus square

199. ## chemistry

hey guys please help me answer these questions. 1. can a strong acid be diluted. explain in detail 2. can a weak acid be diluted. explain in detail 3. how does your observation of sunlight change when you place two different concentrations of food colored

201. ## pre calc

C0rr missi0n kill name id real name die

202. ## physics

Hm0 dug b00b pass taik pay 0ff.blue medcare x x1234567.sead h0sp.c0rr c0urt p0lice 0rder uint die c0de c0rr bylay

203. ## math

marcus scored 23 points in his basketball game on friday and 19 points in his basketball game on saturday.how many points did marcus score in two games

204. ## English

1.If she were or was Please explain the rules. 2. When do you use can not and cannot or everyone and every one? Rules?

206. ## Java programming

can anybody help me.. Multidimensional Array Use a two-dimensional array (for example of 3 by 3) to simulate the addition operation of two matrices. Sample output: the first matrix: 1 2 3 1 0 1 1 2 1 the second matrix: 1 1 1 2 2 2 3 3 3 The total of two

207. ## math

Let 2^a = 5 and 2^b = 7. Using exponent rules, solve the equation in terms of a and b. 0.4^x = 343

208. ## social studies

NEED HELP ON THIS QUESTION Globalization can be understood in terms of shifts in a series of domains. Discuss in relation to i) culture and ii) the state. What in your view, does the future hold in this regard?

209. ## Math 112 Help please

How do I break these down to find out which one is the largest without using a calculator their fraction. a. 13,579 + 1/2468 b. 13,579 - 1/2468 c. 13,579 * 1/2468 d. 13,579/ 2468

210. ## arithmetic

which of the following is the leas0. 0.015 0.105 or 0.15

211. ## physics

A 46.7-g golf ball is driven from the tee with an initial speed of 55.5 m/s and rises to a height of 25.9 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 5.85 m below its

212. ## Quantum/inorganic chemistry

c. Which of these electron configurations has the 4F term symbol for its ground state? p3 d3 d4 f2 f3

213. ## Life orientation

In 10-15 lines critically discuss 5 ways in which the human or enviromental problem impacts on the community

214. ## french

caroline apprend a nager elle prend des lecons de

215. ## Physics

150kg cart is traveling right 3m/s. a 20kg block of coal comes from the cart at 38degrees below the horizontal. The new velocity of the cart with the block is 3.95m/s. What is the initial speed of the coal.

216. ## Chemistry

how to find the mass of the substance if the only given is the molar mass???

217. ## Elementary algebra multiple choice

2x^2+3xy-4y^2= (A) 9x^2-4y^2 (B)9x^2+4y^2 (C)9x^2+4y^2-6xy (D)9x^2+4y^2-12xy

218. ## physics

Hm0 dug b00b pass taik pay 0ff.blue medcare x x1234567.sead h0sp

219. ## Parametric Equations

Find the length of the curve over the given interval: x=t+1 y=ln cos(t) for t=0 ---> t=pi/4

220. ## Biology

Dephosphorylation in the transuction process needs: A) protein kinases B) protein phosphatases C) single sugar like glucose D)cabohydrate

221. ## calculus

Find the length of the curve over the given interval: x=t+1 y=ln cos(t) for t=0 ---> t=pi/4

222. ## Java programming

â€“ One Dimensional Array Consider this example problem: You are given 7 quiz scores of a student. You are to compute the final quiz score, which is the sum of all scores after subtracting the lowest one. For example, if the scores are 8 7 8.5 9.5 7 5

223. ## JAVA PRoblem

In an Array, how to limit the values that are inputted by the users from the keyboard??

224. ## college math

4. Do the indicated operations. A) 3 B) –13 C) 5 D) –11

225. ## Math

If (Y x 15+20=245), what does Y equal?

226. ## arithmetic

which of the following is the least

227. ## english

dialect is used to a-stablish setting and character b-describe the atmosphere c-support the main idea d-help readers visualizwe events mi 1st answer is d then a

228. ## Math

What is 5 to the square root of 2?

229. ## english

if a free verse peom has alliteration does that mean it has rhyme

230. ## English

Posted by rfvv on Sunday, April 14, 2013 at 3:50pm. 1. He is riding a roller board. 2. He is in the air on the roller board with his arms spread in the picture. 3. Talk with your partner and check the Yes box if your partner likies the activity. If your

231. ## maths

Hannah has a balls.4/5 is a black balls while the remaining 35 is a red balls.how many more black balls does hannah have...thanks!

232. ## college math

5u+2v=-15 3u+v=-8 Im not sure how to do this problem

233. ## english

free verse poem a-has simple rhyme pattern b-is written in dignified launguage c-is usually a long narrative peom d-doesnt have a regular rhyme scheme 1-d

234. ## arithmatic

forty six . two multiply by ten minus square

235. ## maths

whats a number to the power

236. ## Maths calculus

Evaluate f'(1) if f(x) =(7x+1)^2

237. ## english plzzzzzzzzz helppppp

which word comes from a latic word meaning right or law a-lecture b-justice c-level djacket 1-b

238. ## pre+calc

C0rr+missi0n+kill+name+id++real+name+die

239. ## english

ms sue can u plzzz check my 1nd answer

240. ## math

f(x,y)=square root x^2+y^2

y/9=-5/3