# Questions Asked onSeptember 11, 2012

1. ## chemistry

how many joules of nutritional energy are in a bag of chips whose label reads 245 Cal? if 1 lb of fat is stored by the body for each 14.6X10(3) KJ of excess nutritional emergency consumed.how many bags of chips contain enough nutritional energy to result

2. ## Chimestry

(Iron ore is impure Fe_2O_3. When Fe_2O_3 is heated with an excess of carbon (coke), metallic iron and carbon monoxide gas are produced. From a sample of ore weighing 950kg , 533kg of pure iron is obtained). What is the mass percent by mass, in the ore

3. ## IPC

If a car can go from 0 to 60 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50 mi/hr? And thank you everyone for answering my questions!!

4. ## ENGLISH

1.When Thomas Paine writes about reconciliation, he is referring to the southern Colonies staying peacefully connected to the northern Colonies. the Colonies staying peacefully connected with Great Britain. the Colonists staying peacefully connected to

5. ## algebra

The quotient of 23 and u minus t

Each of the first 4 pit stops a racecar driver makes loses ten seconds off the leader. The pit crew makes adjustments, and at each of the next two pit stops he gains 7 seconds on the leader. How much time is the driver off the leader? a. 40 seconds b. 14

7. ## math

When all the leaves have fallen a girl can rake the entire yard in 4 hours. When a boy does italone,it takes him 9 hours. How long would it take them to rake the yard together? Round to the nearest minute

8. ## math

five less than three times a number is forty-six

9. ## physics

A diver springs upward from a board that is 2.98 meters above the water. At the instant she contacts the water her speed is 9.39 m/s and her body makes an angle of 70.4° with respect to the horizontal surface of the water. Determine her initial velocity.

10. ## chemistry

What is the melting point of a mixture of 2.00 lb of NaCl and 12.00 pounds of ice if exactly half of the ice melts? Assume that all the NaCl disolves in the melted ice and that the van't Hoff factor for resulting solution is 1.44.

11. ## Chem

If a rock climber accidentally drops a 56-gram piton from a height of 375 meters, what would its speed be before striking the ground? Ignore the effects of air resistance.

12. ## chemistry

Determine the melting point of an aqueous solution containing 115 mg of saccharin (C7H5O3NS)added to 1.00 mL of water (density of water=1.00 g/mL, Kt=1.86 C/m)

13. ## chemistry

A backpacker carries 3.0L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of white gas to be .79 g/cm^3

14. ## Organic Physiological Chemistry

draw each of the following compounds using condensed formulas: a) 3,3,5-trimethyl-1-hexene b) 1-bromo-3-chloro-1-heptyne c) 3-heptyne Not sure if I am doing this right, but for a) i put CH3C(CH3)2CH=CH3

19. ## Math

Decide whether to integrate with respect to x or y. Then find the area of the region: 2y=5sqrt(x), y=4, and 2y+2x=7.

20. ## Physics

The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of healthy humans and animals. When grown in a uniform medium rich in salts and amino acids, these bacteria swim along zig-zag paths at a constant speed of 20

21. ## physics

A speed skater moving across frictionless ice at 9.0 hits a 6.0 -wide patch of rough ice. She slows steadily, then continues on at 6.1 m/s. What is her acceleration on the rough ice?

22. ## english

A loon I thought it was But it was My love's splashing oar. (1 point) a to persuade b to inform c to express d to analyze

23. ## physics

Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

24. ## Limits

The limit as x approaches 0 of (tan2x)/3x = ?

25. ## Chimestry

(The reaction of calcium hydride and water produces calcium hydroxide and hydrogen as products). How many moles of H_2(g) will be formed in the reaction between 0.90mol CaH_2(s) and 1.33mol H_2O(l)?

26. ## Math

Find the mystery digit in 5---,642,089,the mystery does not appear in any other value of the number.when rounded to nearest ten millions place the number is 60,000,000.what is the mystery digit?

27. ## algebra

In 2000, 49% of the residents in a large city regularly used newspapers for getting news and this has decreased at an average rate of approximately 1.3% per year since then. Find a linear function in slope-intercept form that models this description. The

28. ## Math

a rectangular box is 2 cm high, 4cm wide and 6 cm deep. Michelle packs the box with cubes, each 2 cm by 2cm by 2cm, with no space left over. How many cubes does she fit in the box?

29. ## math

how does √28 = 2√7?

30. ## biology

What is meant by the statement, "Living things do not exist in isolation"?

The average energy released in the fission of a single uranium-235 nucleus is about 3. 10-11 J. If the conversion of this energy to electricity in a nuclear power plant is 45% efficient, what mass of uranium-235 undergoes fission in a year in a plant that

32. ## Math

Starting with the kinematics equation x = vot + ½ at^2, derive an expresion relating the acceleration and initial velocity of an object to two paired position and time measurements. In other words, if an object's position is x1 at t1, find the

33. ## economics

what is producer surplus? “The more the competition among the sellers, the less the producer surplus enjoyed by the producers” – do you agree with the statement. Justify your answer. Suppose, a producer is willing to sell 50Kg potato at price

34. ## Physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

35. ## Mathematics

A farmer has both ducks and pigs in a pen together. There are a total of 22 legs in the pen, If there are 7 animals in the pen, how many of each type of animal are in the farmer's pen?

36. ## Science

How many centimeters are in a millimeter?

37. ## PHYSICAL SCIENCE

An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density

38. ## English

Word Bank : apparel besiege compress denounce dispatch douse expressly famished forsake gainful immense inept ingenious instantaneous irk libel misgiving oaf recede repast Some people hailed the man as a genius others ____ him as a quack Denounce? Your

39. ## social studies

Suppose you wanted to make government more capable of acting to solve the pressing problems of the country. Which would you favor? Why? a. Allow individuals to be appointed to the president’s Cabinet while still serving in Congress. b. Allow the

40. ## Psychology

Need help double checking these tricky psychology questions. I put an asterix (*)next to my answers, Thanks! Which of the following fields is the best example of psychology as a basic science? A-Educational psychology B-industrial organizational psychology

41. ## physics

Two students are on a balcony 24.4 m above the street. One student throws a ball, b1, vertically downward at 20.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

42. ## Physics

A skateboarder shoots off a ramp with a velocity of 6.8 m/s, directed at an angle of 56° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the

43. ## Fluid Mechanics

A circular disc having a diameter of 125cm is immersed in water so that the distance of its perimeter measured vertically below the water surface varies between 60cm and 150cm. Find the total force due to the water acting on one side of the lamina, and the

44. ## AP Physics

A parachutist with a camera, both descending at a speed of 9.2 m/s, releases the camera at an altitude of 32.3 m. What is the magitude of the velocity of the camera just before it hits the ground? The acceleration of gravity is 9.8 m/s 2 and air friction

45. ## organic chemistry

how to find ethyl benzoate from methyl benzene

46. ## English

How do you use roundabout ( a circuitous or indirect road, method, etc) in a sentence?

47. ## college biology

Describe some reasons why a patient might have abnormally low blood cholesterol.

48. ## spanish

what spanish word is missing from the sentence, Tus hermanos son los de tus padres.

49. ## English (again O.o)

How would one use.... *abreast *gaily in a sentence? (separate sentences, not together)

50. ## geography

what is organic matter

51. ## Physics

Starting with the kinematics equation x = vot + ½ at^2, derive an expression relating the acceleration and initial velocity of an object to two paired position and time measurements. In other words, if an object's position is x1 at t1, find the

52. ## Physics

A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.40 m/s2 for 14.0 s. 2. Maintain a constant velocity for the next 2.85 min. 3. Apply a constant negative acceleration of −8.39 m/s2 for 4.00 s. (a)

53. ## IPC

A basketball is thrown 12 meters across a basketball court at a speed of 7 m/s. How long was the basketball traveling?

54. ## math

find the greatest possible product using the digits 3,6,4,8.?

55. ## math

estimating with fractions and mixed numbers

56. ## ap chemistry

The reaction of 9.5 grams of fluorine with excess chlorine produced 5.9 grams of ClF3. What percent yield of ClF3 was obtained? Answer in units of %

57. ## ap chemistry

Sulfuric acid (H2SO4) is prepared commer- cially from elemental sulfur using the contact process. In a typical sequence of reactions, the sulfur is first burned: S + O2 ! SO2 , then it is converted to SO3 using a catalyst: 2 SO2 + O2 ! 2 SO3 . The

58. ## Math

When the last digit is 4 or less to what number you rounded in 852?

59. ## IPC

A skier skies down a slope with an average speed of 50 km/s. How far does the skier travel in 5 minutes?

how can i put this sentence where I am not talking to the reader, just describing the surroundings. As one starts to stride to the right,they come upon a small stream and can’t get past the reeking smell of unknown origins. my whole paper is suppose to

61. ## IPC

A student is running through the halls of solon high school at a constant velocity of 4 m/s, so that he/she can be on time to science class. If the class is 25 meters away, will the student make it in 5 seconds?

62. ## science

what tool is used to measure force?

63. ## Physics

The fastest sustained runner is the pronghorn antelope, capable of running at 55 min/h for 1/2 mile. How long does it take this antelope to run the. 1/2 mile?

64. ## Math

Ben made 3/5 of baskets he shot, suppose he shot 60 baskets. How many did he make?

65. ## statistics

if the mean=100 and the standard deviation=8, calculate p(x>108)

66. ## math

how do i perform the indicated operation 3 4/5 + 2 2/8 = ?

67. ## Math

What is a shortcut for finding the sum of all numbers from 1-99?

68. ## Limits

What is the limit of (sinx)/x As x approaches 2?

69. ## geometry

[1.04] If B is between A and C, AB=8x, BC=3x and AC=33, what is the value of AB?

70. ## Math

Can you place least to greates ; these numbers 5/6, 0.85, 0.9

71. ## Honors Geometry

If AB=1/5BC and AC=18, what is AB?

72. ## Math

Solve for t using natural logarithms. 7e^3t = 10e^2t

73. ## physics

2 ants cross a counter 54cm long, one travels at 16 meters per second, and the other at 3.99999 centimeters per second. when the first crosses the finish line how far behind is the second?

74. ## math

How could you use 5x6 equals 30 to find the product of 6x6.

75. ## IPC

Give 2 examples of units for the following quantities: Distance: Time:

76. ## math

what is the greatest possible product using the digits 3,6,4,8. _ _x_ _

77. ## physics

2 ants cross a counter 54cm long, one travels at 16 meters per second, and the other at 3.99999 centimeters per second. when the first crosses the finish line how far behind is the second?

78. ## Algebra HELP!

Starting with the kinematics equation x = vot + ½ at^2, derive an expresion relating the acceleration and initial velocity of an object to two paired position and time measurements. In other words, if an object's position is x1 at t1, find the

79. ## Math

Which integer is equal to the product of -8 and the sum of 5 and -2? A) -24 B) -6 C) 6 D) 24

80. ## English

A(n) ____ will be sent to all our representatives in Latin AMerica advising them how to handle the problem ingenious? Some of lifes rewards are ____ others are a long time coming instantaneous None of us could figure out how the ____ magician had managed

81. ## math

Subtract. –84 – 55 the answer is -29 right?

Which expression has the same value as −|−3|⋅|5|? a. −3⋅(−5) b. 3⋅5 c. −3⋅5 d. −(−3⋅5)

83. ## grammar

what are different types of quantity and quality adjectives.please give some examples Miss.Sue.

84. ## Spanish

Letters are: a m i a t a m t d r s Need to unscramble to come up with a "member of the family" Thanks!

85. ## LSU

Two point charges Q1 = -26.8 micro-Coulombs and Q2 = +38.5 micro-Coulombs are located on a vertical line with Q1 below Q2. The coordinates of Q1 is (0.0, -6.8 cm). The two charges are 28.6 cm apart. Determine the coordinates of the location where the net

86. ## MATH URGENT

AN INTEGER IS RANDOMLY SELECTED AND PERMANENTLY REMOVED FROM THE SET OF 100 INTEGERS (1,2,3,...100). WHAT IS THE MINIMUM NUMBER OF TIMES THIS REMOVAL PROCEDURE WILL HAVE TO BE DONE TO GUARANTEE THAT AN INTEGER HAS BEEN REMOVED?

136. ## accounting

what are examples of liability

137. ## Math

Jimmy measured four pieces of wood . Their measures are 4.2ft , 9/2 ft, 4.2ft, and 4 2/9 . What is the length of the shortest piece ?

138. ## Math 8R Qs. Check!!!!!!

Why is 2/5 not an integer? my answer - Because it's a fraction and integers are whole numbers. Fractions are not whole numbers. am i correct???

139. ## Probability

An urn contains a red ball, a blue ball, an orange ball, and a yellow ball. A ball is chosen one at a time then replaced. This is done 4 times. What is the probability one of each color is chosen?

140. ## phyics

Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 72 . how do i

141. ## English

Hinders ability to function starting with dis il or not and it has 10 letters. The 5th letter is b and the 7th is l and the 9th is a

142. ## Science

What is the difference between the lithosphere and the asthenosphere? In which layer is each located?

143. ## Physics

Suppose a car is traveling at +24.8 m/s, and the driver sees a traffic light turn red. After 0.372 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 6.00 m/s2. What is the stopping distance of the car, as measured

144. ## Math

Pages in a book are numbered in typical fashion, starting with !. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur? Can you help

145. ## biology

A gene for flower color can have multiple alleles like purple, white, or red.

146. ## any study tips

i'm doing bad in school,mostly in math and i need some tips on studying so anyone got any

147. ## biology

One in every 685 children born in the chicoutimi area of quebec province has tyrosinemia. It is cause by having two copies of the receissive allele. Under the assumptions of Hardy-Weinberg equilibrium, calculate the value of q required to produce this

148. ## Physics

An explorer in the dense jungles of equatorial Africa leaves his hut. He takes 39 steps at an angle 45 north of east, then 80 steps at an angle 60 north of west, then 51 steps due south. Assume his steps all have equal length. Save him from becoming

149. ## Literature

If you were simeon, what would you write a a five days journal pertaining to your life?

150. ## Order of Operations

Which choice gives the correct order of operations needed to find the value of 4(6+3)-24? A.+,x,= B.x,+,- C.-,x,+ D.+,-,x A? What is the value of the expression 7(3x18-10)? A.53 B.168 C.186 D.308 D? Simplify 4(3+2)+2(16/4) A,88 B,44 C,32 D,28 A? Simplify

151. ## Math

What is the value of x when the line crosses the x-axis?

152. ## Math

I need a rule for the following table: Input 0 1 2 3 4 5 Output 5 4 3 2 1

153. ## math

The school auditorium has 8 rows of seats, divided into 3 sections. Each section has 15 seats. Which one the following would be the correct way to figure out the total number of seats? a. 8x15 b. 8x3x15 c. 3x3x8 d. 8x3 Isn’t this an error? I think the

154. ## Math

How would I find point slope form, slope intercept form, and standard form for these three sets of coordinates. (5,3) (5,-1) (2,6) (4,-2) (-4,-3) (-1,-4)

155. ## Math

The school auditorium has 8 rows of seats, divided into 3 sections. Each section has 15 seats. Which one the following would be the correct way to figure out the total number of seats? a. 8x15 b. 8x3x15 c. 3x3x8 d. 8x3 Isn’t this an error? I think the

156. ## Chemistry

C2H4(g) + H2O(l) → C2H5O(l) what is the rendition percentage if 4.50g of C2H4 produce 4.7g of ethyl alcohol?

157. ## chemistry

If 36.3 ml of 0.152M NaOH is required to neutralize 25.00 ml of an HC2H3O2 solution ,what is the molarity of the acetic acid?

158. ## Algebra..

Check These Answers Please? f(x)= x^2+3 ; g(x)=3x-1 1. (f+g) =x^2+3x+2 2. (f+g)(3) = 20 3. (f-g)(x) = x^2+3x-4 4.(fg)(x) = 3x^3+1x^2-9x+3 5. (fg)(x) =5 6. (f/g)(x) =(x^2+3)/(3x-1) Compostitions of functions : 7. (f o g)(x) =3x^2+4 8. (f o g)(x) =10

159. ## Math

Rounds each number to four significant figures. ( Could someone check if I'm right? Thanks) a. 431801 = 4318 b. 10235.0 = 1024 c. 1.0348 = 1.035 d. 0.0004384010 = 0.0004384 e. 0.00078100 = 0.0007810 f. 0.0098641 = 0.009864

160. ## reality

i know today is 9/11 and i will pray for the victims and their family.But why do we hear about every year when huge stuff like that barely gets noticed by our generation.Just ask your parents what big stuff happened.Again I will pray but i'm keeping the

161. ## physics

A bullet is fired horizontally from the top of a cliff which is 750 meters high and hits the ground at a horizontal distance of 1660 meters. (Consider air resistance to be negligible

162. ## calculus

If f(x)= 1 + ln(x+2), then f^-1 (x)is...?

163. ## math

A small rock weighed 4,298 ounces. what is the eight of the rock to the nearest thousand?

164. ## math

Subtract the sum of 81.6 and 4.07 from 129.4

165. ## Math

I need to identify property. For r (l) = r Would this be inverse property for multiplication?

What is most important about section 179 depreciation?

167. ## Algebra..

Help? If f = (1, 2), (2, 3), (3, 4), (4, 5), g = (1, -2), (3, -3), (5, -5), and h = (1, 0), (2, 1), (3, 2), Find and state the domain. 1. f+g 2. f-g 3.f*g

168. ## math

what is a number story

169. ## english

can you you please answer this : 1.It seems that the match is postponed ans. The match seems to be postponed tell me the grammatical aspects in the above sentences both are in passive form only. 2.It is likely that sherry will be awarded the prize

170. ## Psychology

Where are selfish impulses? Examples of social conscience?

171. ## Physic 210

you drive due east at 85km/h for 50min. then you follow a road going 60 degrees south of east, going 90km/h for another 30min. Find your total displacement.

172. ## Math

Hello, I'm doing a review sheet for math and a certain question states: "solve: ln(3/4)" What should I take solve to mean? Do I just change it's form to ln(3/4) = ln3 - ln 4 ? Or, perhaps, I need to actually enter in the value into a calculator. How would

When drawing a kekule structure for CH3CH2OH(alcohol) do I leave the OH at the end just like it is (OH) or would it be shown as O-H? I know that to start of it would be -C- with an H on the top and the bottom as well as the left side and then connected to

174. ## windows 7

asssuming a disk should never get 85% full & assuming you were generating 200 MB per week of new data, at what point would you need to add another hard disk?

175. ## Chemistry(Mastering Chemistry HELP )

Convert 2.868*10^10g to kg, Mg, and mg For kg, I put .002868 and 2.868*10^-3 but the computer said neither are correct. HELP PLEASE! (:

176. ## Math

What does A + B + C equal if A=6, B=3, and B=C?

177. ## Science

A man with a mass of 100 kg slides down a vertical pole with an acceleration of 8 m/s2. What is the frictional force acting on the man?

178. ## chemistry

How many atoms of lead are there in a river with 2.95x10-6mol of lead?

179. ## Math

Pages in a book are numbered in typical fashion, starting with !. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur?

180. ## Physics

A car is initially travelling at a constant speed of 20 m/s along a highway. Suddenly, the driver applies the brakes, causing the car to accelerate at -5.0 m/s^2. If the driver applied the brakes 0.50s late, determine the distance the car travels from the

181. ## math

what fraction falls between 1.8 and 2.0 because

182. ## physics

If the potential difference between a cloud and the ground is about 17 , how much charge is transferred in a lightning bolt that releases 1.2 of energy?

183. ## Algebra

What is the rule for this input/output table? Input 0 1 2 3 4 5 Output 5 4 3 2 1 0

184. ## language

Circle the simple subject and underline the simple predicate. The smell of cooking is delicious to the hungry campers.

185. ## Science

536cm (bigger or smaller than) 53.6 dm

186. ## english

pl help me to write better english 1.The poor man used to carry his heavy load to the market every day : ans ; THE HEAVY LOAD USED TO BE CARRIED TO THE MARKET PLACE EVERY DAY which expression is better

187. ## Chemistry

Given a C=O double bond, how do you determine the length of the bond in different molecules using resonance structures? I know single bonds are longer than double bonds...but how do you distinguish between lengths of the same double bond in different

188. ## World History

What is the name of the hindu god that is "the god of students"?

189. ## Physics

The left ventricle of the heart accelerates blood from rest to a velocity of +21.4 cm. A. If the displacement of the blood during the acceleration is +1.55 cm, determine its acceleration (in cm/s2). B. how much time does the blood take to reach its final

190. ## math

Writing to Explain Why is the value of a - 1 always less than the value of a?

191. ## algebra 2

how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?

192. ## College Algebra

You plan to invest $12,000 in two funds paying 41/2% and 5% simple interest. (There is more risk in the 5% fund.) Your goal is to obtain a total annual interest income of$580 from the investment. What is the smallest amount you can invest in the 5% fund

193. ## english

could you pl explain how the perfect infinitive is effectively used in english

194. ## Art

what Manga should I draw for art class?

195. ## math

what else does a number story mean ?can you give more details

196. ## Math

Three fair dice are rolled, and all outcomes are equally likely. What is the probability that the sum of all the numbers on the dice is at most 6?

197. ## algebra

here's my question: when x is to the power of 1, the answer is x, correct? And when x is to the power of zero, the answer is 1, correct?

198. ## Math

Three fair dice are rolled, and all outcomes are equally likely. What is the probability that the sum of all the numbers on the dice is at most 6?

199. ## Chemistry

A bug is observed to travel 72 cm in 7.5 seconds. What is the bug's speed in miles per hour?

200. ## physics

A swimmer heads directly across a river, swimming at 1.10 m/s relative to the water. She arrives at a point 52.0 m downstream from the point directly across the river, 72.0 m wide. What is the speed of the river current? What is the swimmer's speed

201. ## Math

I have 3 questions: 1. Construct a data set of 8 items that has a mean absolute deviation of 0.5 and for which the mean is 10. 2. Construct a data set of 7 items that has a mean of 2 and a mode of 5. 3. Construct a data set of 7 items that has a median of

202. ## Human Sexuality

I have to write a paper called "What my parent's told me" its about sex, std's and protection and more while growing until now and I am trying to get and opening paragraph and thesis..Can anyone assist me??? Thank you in advace

203. ## algebra 2

how do i find the are of the region defined by |x|+|y| less than or equal to 5 and |x|+|y| greater than or equal to?

205. ## pre calc

the graph of y=-1/2 x+5 +3 can be obtained from the graph of y= x by which transformations what is the horizontal shift by what factor is the graph stretched or shrunk vertically and how is it reflected

Classify the following functional groups: 1)CH3CH = CH2 I think this is an alkene 2) CH3CHCH3 I think it is an alcohol. ! OH Would you agree with my answers?

207. ## Chemistry

what was the last element that was discovered to be part of the human body?

208. ## math

round off 16,352 to the nearest tens

209. ## Geometry

the area of a triangle is 27. its height is 3 times the base. find the height and the base of the triangle.

210. ## physics

A machine gun fires 20 bullets per second in to a target. Each bullet weight 10 gm and has a speed of 1500m/s; Find the Force necessary to hold the gun in position.

211. ## Organic Chemistry

Hello I have to determine the theoritical yield of sulfanilamide after crystalization of impure sulfanilamide with 95% ethyl alcohol (the impure sulfanilamide contains 5% Fluorenone) I understand how to calculate the theoretical yield, my problem is

212. ## maths, algebra

State the degree of each of the following: a)3 b)x^0 My answer for a) was: 1 My answer for b) was: 1 BUT at the back of the book, the answer for a) was 0. The answer for b) was also 0. I just don't understand why I'm wrong.

213. ## AP Language & composition

Hello, i am reading moments of being. i have two questions that i feel will help me to understand better. First. How does the language used help to convey the moments in the story? also what does "it is one of those invaluable seeds, from which, since it

214. ## Math

there are 7 people and you ordered 4 pizzas. Each person ate 3/8 of a pizza. How much pizza would you have left

215. ## geography

I just wanted to make sure my answers are correct, Can you check it please? Find an example of an area of land that is smaller than a continent and is completely surrounded by water. What term is used to describe this type of land? An example is Jamaica.

216. ## science

jasie traveled 500m at a speed of 13 miles how long did it take her?

246. ## Physics

If a person can jump a maximum horizontal distance (by using a 45° projection angle) of 2.35 m on Earth, what would be his maximum range on the Moon, where the free-fall acceleration is g/6 and g = 9.80 m/s2? b) (b) Repeat for Mars, where the acceleration

247. ## physics

A sprinter explodes out of the starting block with an acceleration of + 2.29 m/s2, which she sustains for 1.13 s. Then, her acceleration drops to zero for the rest of the race.

248. ## biology

Explain why a single base deletion could be potentially more damaging to protein synthesis than a deletion of three consecutive bases confined to one triplet

249. ## Fluid Mechanics

A circular disc having a diameter of 125cm is immersed in water so that the distance of its perimeter measured vertically below the water surface varies between 60cm and 150cm. Find the total force due to the water acting on one side of the lamina, and the

250. ## Psychology

How do you think your psyche has evolved to meet the challenges of your society and culture in this time and place? Can some give me some examples so that I can get an idea?

251. ## AP PHYSICS

A quarterback throws the football to a stationary receiver who is 15.2 m down the ﬁeld. The football is thrown at an initial angle of 42◦ to the ground. The acceleration of gravity is 9.81 m/s 2 a) At what initial speed must the quarterback throw the

252. ## AP Physics

A ball is thrown horizontally from the top of a building 51 m high. The ball strikes the ground at a point 120 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 Find the x component of its velocity just before it strikes the ground.

253. ## Math

Find the volume of the solid generated by revolving the following region about the given axis The region in the first quadrant bounded above by the curve y=x^2, below by the x-axis and on the right by the line x=1, about the line x=-4

254. ## Math

A 5'6" person is standing near a light post that is 18' above the ground. How long is the man's shadow when he is 5' from the base of the light post?

255. ## Geometry

B is between A and C. Solve for x, if AB=2x+6, BC=4x-3, and AC=5x+12

256. ## AP Physics

A home run is hit such a way that the baseball just clears a wall 30 m high located 114 m from home plate. The ball is hit at an angle of 37 ◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1 m above the

257. ## ap chemistry

Sulfuric acid (H2SO4) is prepared commer- cially from elemental sulfur using the contact process. In a typical sequence of reactions, the sulfur is first burned: S + O2 ! SO2 , then it is converted to SO3 using a catalyst: 2 SO2 + O2 ! 2 SO3 . The

258. ## math

At Thanksgiving dinner, Deborah ate a portion of turkey (673 calories;masch potatoes (408 calories);stuffing (519 calories); cranberry sauce (219 calories);beans (278 calories); and pumpkin pie (523 calories); approximately how many calories did she

259. ## Governement

Can you explain who the Kock Brothers are? and Also what is NUns on the bus?

260. ## math

x+y+5z=18 x+y+7z=26 x-4y-7y=-35 its a solve a 3 equation solve the system

261. ## ap chemistry

In the reaction below, 22 g of H2S with excess O2 produced 10 g of sulfur. ?H2S + ?O2 ! ? S + ?H2O. What is the percent yield of sulfur? Answer in units of %

262. ## physics

Two point charges are placed along a horizontal axis with the following values and positions: +3 µC at x = 0 cm and - 12 µC at x = 35 cm. At what point (the coordinate) along the x axis is the electric field zero? Expess the answer (in cm) with one

263. ## biology

Do production of anti-A, anti-B, and anti-Rh antibodies require the exposure to antigens

264. ## chemistry (need asap!)

is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain

265. ## physic

The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.2 s.

266. ## math

Tell what operation you would to write each expression 6 more than 13

267. ## math

What numerical expression for 31 increased by 14?

268. ## Math

Steven bought a piece of meat and cut it into three pieces. The mass of the first piece of meat was 5/8 of the mass of the second piece of meat. The mass of the second piece of meat was 4/7 of the mass of the third piece of meat. a. Find the ratio of the

269. ## calculus

A fixed amount 15000 is invested in a tax-sheltered account at an annual rate of percent, compounded continuously. Let represent the amount in the account at time . Part A. Let percent. Give the differential equation that describes the rate of change in

270. ## math

subtract 345 from 678

271. ## Math Ratio and Fractions

The ratio of the length of Pole A to the length of Pole B is 4:5. a. find the ratio of the length of pole A to the total length of the two poles. b. what fraction of the length of pole A is the length of pole B. c. what fraction of the length of pole B is

272. ## math

which units would be most appropriate for measuring the perimeter of a swimming pool, square yards, yards, or cubic yards?

273. ## Biology

A plant does not use potassium for a building material or energy source, but it stops doing photosynthesis and dies if it runs out of potassium. Why?

274. ## Algebra

Which ordered pair (x,y) makes the relation below a function? {(1,2), (-2,4), (3,3), (-4,4), (x,y) A (-4,-2) B (-2,3) C (3,2) D (5,1)

275. ## Biology

A plant does not use potassium for a building material or energy source, but it stops doing photosynthesis and dies if it runs out of potassium. Why?

276. ## CHEMISTRY HELP ASAP!

is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain

277. ## AP world history

1) What conditions influenced the rise of Islam in Arabia? 2) How did Islam unite and effectively rule diverse people and cultures? 3) How did Islam change over time from the time of Bedouin tribes to the Abbasid Caliphate? How did Islam continue over time

278. ## Math

To Train For a marathon Katie runs 20 km 4 days a week. How many kilometers does she run each week a) 20x4x30x2 B) 4+20x30 c) 4x20+2x30 what am i supposed to do?

279. ## algebra

if the question asks: (length) nine added to a number x and the width is three times a number x. would it be wrote like this: (length) 9+x (width) 3*x??????

280. ## math

you invested $4000 in two accounts paying 2% and 9% annual interest, respectively if the total interest earned for the year was$150, how much was invested at each rate. $_was invested at 2% and _$ was invested at 9%

281. ## spelling

write root webs for Insincere

282. ## math

A wildfire spread for 7 days and covered a total 780 square miles. How can you estimate the number of square miles the wildfire covered per day?

283. ## college biology

Why LDL is considered the bad cholesterol and HDL the good cholesterol

284. ## element of design

graphic designer sometimes must adjust the spacing between letters so that the results looks right to them. this is called

285. ## Algebra 2/Trig

A 5'6" person is standing near a light post that is 18' above the ground. How long is the man's shadow when he is 5' from the base of the light post?

286. ## math

solve the problem 456 + 65.

287. ## Calculus

Find if there are any vertical asymptotes: g(theta)= (tan4theta)/(4theta)

288. ## Math

x is to 6 as 0.8 is to 1.5 How do I write a proportion with that? (proportion such as eg. 14/105=x/315) is it x/6=0.8/1.5 or is it x/0.8=6/1.5 Urgent!!

289. ## math

fred was born 15days before ann. jake was born 28days before fred. lester was born 32 days before jake. how many days before ann was born was lester born

290. ## math

A cylindrical pipe has a radius of 8 inches and a height of 100 inches. About how many cubic inches of water will fill the pipe?

291. ## mth

why is the number 50 important

292. ## Math

how do I solve this problem.. Marty has 6 more pogs the Jen. After he gives 10 pogs to Jen, how many more pogs will Jen have than Marty>

293. ## math

how can you check that the sum of 125+38+75 is 238

294. ## aP world history

2) How did Islam unite and effectively rule diverse people and cultures? 3) How did Islam change over time from the time of Bedouin tribes to the Abbasid Caliphate? How did Islam continue over time from the Bedouins to the Abbasid?

296. ## organic chemistry

What equation will ch=ch-ch2-ch2-ch2-ch3 + kmno4 create?

297. ## CHEM HELP ASAP!

Calculate the heat energy released when 29.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: Heat capacity of Hg (l) 28.0 J/Mol*K, Melting pt 234.32 k, and enthalpy of fusion 2.29 kg/mol

298. ## bratz wiki

from the movie bratz in 2007, the person Natallia? who plays yasmine, is she a star to? plzz help 4 report

299. ## CHEM HELP ASAP!!

Two 20.0-g ice cubes at –10.0 °C are placed into 275 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. heat capacity h2o (S)=37.7 j/mol*k heat

300. ## Physics

Three men are trying to move a wardrobe. One pushes northward with a force of 100N; the second pushes eastward with a force of 173N; the third pushes in a direction 60 degrees west of south with a force of 200N. What is the resultant force on the wardrobe

301. ## physics

An astronaut and a satellite are in an environment where no net external forces act on them. The astronaut tugs on the satellite with a force of 9.5 N in positive x-direction. What is the x-component of the force exerted by the satellite on the astronaut?

302. ## chemistry

Cellobiose(a nonvolative, nonelectrolyte) is a sugar obtained by degratation of cellulose. If 200.mL of an aqueous solution containing 1.500g of cellobiose at 25C give rise to an osmotic pressure of 407.2mmHg. What is the molecular mass of Cellobiose?

303. ## math

advice to finding all the factors of 110

304. ## physics

Two motorcycles are traveling due east with different velocities. However, 5.81 seconds later, they have the same velocity. During this 5.81 -second interval, motorcycle A has an average acceleration of 4.07 m/s2 due east, while motorcycle B has an average

305. ## English

The word bank is the same Word Bank : apparel besiege compress denounce dispatch douse expressly famished forsake gainful immense inept ingenious instantaneous irk libel misgiving oaf recede repast Far away on the horizon we saw the tiny figure of a lonely

306. ## physics

In coming to a stop, a car leaves skid marks 77 long on the highway Assuming a deceleration of 7.20 , estimate the speed of the car just before braking

307. ## physics

In coming to a stop, a car leaves skid marks 77 long on the highway Assuming a deceleration of 7.20 , estimate the speed of the car just before braking

308. ## math

Find the requested probabilities. P(B) = 1/5

309. ## math

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 167 and a variance of 9. The material is considered defective if the breaking strength is less than 158 pounds. What is the probability that a single,

310. ## math

Use Hamilton's plan to apportion the new seats to the existing states. Which state illustrates the Alabama paradox? Assume that the populations are in thousands. 1 State A B C D E Population 300 701 800 700 800 Number of seats 82

311. ## englishhhh

1. How was jonah from cats cradle a dynamic character

312. ## physics

A motorcycle has a constant acceleration of 4.33 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a) 40.0 to 50.0 m/s, and (b) 70.0 to 80.0 m/s?

313. ## english

I need 12 vivid verbs for the following words: lake, river, ocean, swimming pool.

314. ## Soc studies

What are the differences between the 1st and 2nd continental congress and their outcome?

315. ## math

In a recent survey of 100 women, the following information was gathered. 32 use shampoo A. 41 use shampoo B. 40 use shampoo C. 2 use shampoos A and B. 4 use shampoos A and C. 10 use shampoos B and C. 1 use all three. Use the figure to answer the question

316. ## math

Write the expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). = 1

317. ## math

how many comanations make 52 cents in dimes and pennies

318. ## math

Computers manufactured by a certain company have a serial number consisting of a letter of the alphabet followed by a five-digit number. If all the serial numbers of this type have been used, how many sets have already been manufactured?

319. ## Math

Two points for each of two lines are given. Determine if the lines are parallel, perpendicular, or neither. L1: (4, -6) and (3, -2) L2: (3, -1) and (7, 0)

320. ## Biology 111

what is the amino acids?

321. ## math

tenecia is thinking of a number with 8 place values. the digit in the thousands place is 5. the digits in the hundred thousands are hundreds place are both an odd number greater than 7. the digit in each other place value is one less than the digit in the

322. ## chemistry

The concentrations of Ca and Na in a sample of river water are 13.4 mg/kg and 5.2 mg/kg. Express the concentration in molality

323. ## earth science

A swimmer completed the 1,500 meter freestyle in 625 seconds. What was his average speed?

324. ## Order of Operations

Which choice gives the correct order of operations needed to find the value of the expression below? 6+7(5-2)/3 A.+,-,x,/ B.-,x,+,/ C.-,x,/,+ D./,x,-,+

325. ## math

Why did the cbicken add its opposite to itself? To get to the other side of the equation

326. ## science

what is a tool used to measure?

327. ## physics

The top of the pool table is 2.80 ft from the top of the floor. A pool player hits the ball and it lands 14.25 ft from the edge of the table. Calculate his break speed and the speed at which the ball hit the ground

328. ## science

what tool is used to measure mass

329. ## Algebra

Whats The quotient of 6 and a number increased by 6 written in algebraic expression also whats The product of 9 and c decreased by 8

330. ## Math

Whats Eighteen decreased by the difference of a number and 7 written in algebraic expression.?

331. ## gravity

while standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.79 m/s. the stone then falls to the ground 14.3 m below. At what speed does the stone impact the ground? how much time is it in the air? g=9.81 m/s^2

332. ## physics

Over a time interval of 1.72 years, the velocity of a planet orbiting a distant star reverses direction, changing from +18.2 km/s to -18.8 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during

333. ## Chemistry

How would I find the percent of water lost in alum after it has dried for a week? Wet Alum = 13.44g Dry Alum = 11.28g

334. ## math

a rectangular prism is 42ft^3. What is the volume of a pyramid with the same base and height?

335. ## Physics

i.imgur. com/cqwun. png i'm kind of stuck.. are the answers 6, -3, -3, and 0?