# Questions Asked onFebruary 6, 2012

1. ## Chemistry

At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is

2. ## physics

A block with mass m =7.3 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.21 m. While at this equilibrium position, the mass is then given an initial push downward at v = 4.5 m/s. The block oscillates on the

3. ## AP CHEMISTRY

At 80.°C, Kc = 1.87 10-3 for the reaction. PH3BCl3(s) PH3(g) + BCl3(g) (a) Calculate the equilibrium concentrations of PH3 and BCl3 if a solid sample of PH3BCl3 is placed in a closed vessel at 80.°C and decomposes until equilibrium is reached. (b) If the

4. ## chemistry

Balance the following chemical equation: C3H7OH(l) + O2(g) CO2(g) + H2O(g)

5. ## English

The speaker in “I, Too, Sing America” survives adversity because he feels faith that he will one day be affirmed by white America. he has uncovered the hypocrisy around him. he is better than the people who are oppressing him. hope that he can one day

6. ## precal

tan3x=(3tanx-tan^3x)/(1-3tan^2x)

7. ## AP CHEMISTRY

For the reaction I2(g) + Br2(g) 2 IBr(g), Kc = 280. at 150.°C. Suppose that 0.590 mol IBr in a 2.50-L flask is allowed to reach equilibrium at 150.°C. What are the equilibrium concentrations of IBr, I2, and Br2?

8. ## Math

A scale model of a house is 1 foot long. The actual house is 50 feet long. In the model, the window is 1 1/5 inches high. How many feet high is the actual window?

9. ## physics

a 20 kg rock is on the edge of a 100 m cliff . the rock falls from the cliff , what is its kinetic energy just before it hits the ground ?

10. ## Chemistry

A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to form 0.250 L solution. The resulting solution has an osmotic pressure of 0.605 atm at 25 Celsius. Assuming that the organic

write three sentences describing life in the desert. use the past tense of at least two irregular verbs.

12. ## Math

Write the equation of the circle with a center at (2,-2) and point (6,1)

13. ## physics

the largest watermelon ever grown had a mass of 118 kg. suppose this watermelon were exhibited on a platform 5 m above the ground . after the exhibition, the watermelon is allowed to slide along to the ground along a smooth ramp, How high above the ground

14. ## AP CHEMISTRY

I've got another question. it's similar to this but this time with Kp. Here's the question: For the equilibrium 2IBr(g) I2(g) + Br2(g) Kp = 8.5 10-3 at 150.°C. If 0.016 atm of IBr is placed in a 2.5-L container, what is the partial pressure of all

15. ## algebra

What is the quotient if the dividend is 1/2 & the divisor is 1/8?

16. ## physics

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of

17. ## Chemistry

Indicate which of the following quantum numbers are unacceptable: (a)(1,2,0,1/2) (b) (3,2,0,1/2) (c)(3,2,2,1) (d) (4,3,2,-1/2)

18. ## physics

in 1989 michel menin of france walked on a tightrope suspended under a balloon nearly at an altitude of 3150 m above the ground . suppose a coin falls from menin's pocket during his walk . how high above the ground is the coin when its speed is 60 m/s ?

19. ## Physics

A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged

20. ## chemistry

Calculate the mL of 2.00 M H2SO4 required to neutralize 50.0 mL of 1.00 M KOH? consider that H2SO4 has two acidic hydoregens H2SO4(aq) +2KOH(aq)---->K2SO4(aq) + 2H2O(l)

21. ## calculus

Find the points on the curve below at which the tangent is horizontal. Use n as an arbitrary integer. (Enter your answers as a comma-separated list.) y = sin x/ 2 + cos x

22. ## math

t varies directly as the square root of l. If l=81, then t=10 what is the constant proportion? 1. a is directly proportional to b. If a = 15, then b = 9 2. M varies directly as n. If n = 2/3, then m = 1/4 3. T varies as the square root of L. If L = 81,

23. ## Geometry/trig

A plane is flying due south at a speed of 300 mph. The wind is blowing from the west at a speed of 40 mph. Find the resultant speed of the plane and the direction of the plane

24. ## Chemistry

Calculate the mass of a quart (946 mL) of mercury. The density of mercury us 13.6 g/mL?

25. ## chemistry help asap

Please check these thanks. 1. In a titration, 33.21 mL 0.3020M rubidium hydroxide solution is required to exactly neutralize 20.00 mL hydrofluroic acid solution. What is the molarity of the hydrofluroic acid solution? Answer: 0.502HF 2. A 35.00 mL-sample

26. ## Pre-Calc

find the exact value of sin(-15pi/6) and cot(-7pi/6)

Carmen Santiago works for a number of businesses as a “consultant.” She has helped design accounting systems, provided accounting services, and analyzed the financial strength of her clients’ businesses. Carmen is working as a A.public accountant

28. ## Algebra

A kayak moves at a rate of 10 mph in still water. If the river's current flows at a rate of 2 mph, how long does it take the boat to travel 24 miles upstream?

29. ## English

Thank you!! Could you check the things I wrote on the different kinds of narrator. (I still need to include the non-omniscient narrator but I need to know if my definitions are correct). 1) The narrator is the voice who tells the story and from whose point

30. ## English

I left out the following statements. Could you please check them? Thak you.. 1) A third-person narrator can tell the story as an omniscient narrator, who knows everything about the events and the characters’ thoughts using an unlimited point of view or

31. ## calculus

Find the volume of the frustrum of the right circular cone generated by rotating the line y=x+1 about the x-axis between x = 0 and x = 3

32. ## Chemistry

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 pound of oil provides 2.4*10^7 J. How many kg of oil are needed to heat 100 kg of water from 22 to 100 degrees C? How many kg of oil are needed to provide steam from

33. ## Chemistry

Calculate the density of a metal object that has a dull surface and an irregular shape. It has a mass of 321 grams and a volume of 45.2 cm 3.

34. ## Science 7R - HW Check (PLZ read!)

Compare Lamarck's explantion of evolution with Darwin's theory. My Answer - After scientist collected large amounts of data on the inheritance of characteristics, Lamarck's explanation was rejected. Darwin's developed the theory of evolution still accepted

35. ## chemistry

If you burn 38.9 g of hydrogen and produce 348 g of water, how much oxygen is reacted?

36. ## Physics

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?

37. ## math

The base of a regular pyramid is a square whose sides have a length 8 cm. If a lateral edge of this pyramid has length 20 cm, what is the surface area of the pyramid?

38. ## Physical Chemistry

A mole of air (80% Nitrogen, and 20% Oxygen by volume) at 298.15K is brought into contact with liquid water which has a vapor pressure of 3168Pa at this temperature. a) what is the volume of the dry air if the pressure is 1 bar? b) what is the final volume

39. ## chemistry

give the total number of protons and electrons in each atom Cr2+ 24 protons 22 electrons Cr3+ 24 protons 21 electrons Ni3+ 28 protons 25 electrons Ni4+ 28 protons 24 electrons

40. ## physics

a large chunk of ice with mass 15 kg falls from a roof 8 m above the ground . find the kinetic energy of the ice when it reaches the ground

41. ## geometry

the ratio of mango juice to guava juice in Paradise Punch is 5 to 3. Leilani has 32 fl oz of mango juice. How much guave juice does she need?

42. ## physics

Two point charges each of magnitude 2.14 µC are located on the x axis. One is at x = 1.00 m and the other is at x = -1.00 m. (a) Determine the electric potential on the y axis at y = 0.620 m. kV (b) Calculate the change in electric potential energy of the

43. ## Chemistry

For a 5.0 g sample of CoCl3·9H2O, what weight of water (in grams) will be lost if the sample is heated to constant weight (all water driven off)?

44. ## Chemistry

The following data were obtained at 25° C for the reaction C2H5Br + OH- ->C2H5OH + Br- Determine the rate law for the reaction from these data. [C2H5Br] [OH-] Rate 0.150 0.200 4.8 x 10-5 0.300 0.200 9.6 x 10-5 0.450 0.200 14.4 x 10-5 0.300 0.600 28.8 x

45. ## Physics

A hiker, who weighs 990 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3550 N, and rests on two concrete supports, one at each end. He stops one-fifth of the way along the bridge. What is the

46. ## Calculus

at 12 noon ship A is 65 km due north of a second ship B. Ship A sails south at a rate of 14km/hr, and ship B sails west at a rate of 16km/hr. How fast are the two ships approaching each other 1.5 hours later at 1:30pm? Thank You!

47. ## Chemistry

A 55.0-g piece of ice at 0.0 is added to a sample of water at 8.0. All of the ice melts and the temperature of the water decreases to 0.0. How many kg of water were in the sample?

48. ## Chemisty

For the following reaction, 0.390 moles of nitrogen gas are mixed with 0.139 moles of oxygen gas. nitrogen (g) + oxygen (g) nitrogen monoxide (g) What is the FORMULA for the limiting reagent? What is the maximum amount of nitrogen monoxide that can be

49. ## math math math

HELP ME PLEASE I AM ABOUT TO DIE Should I join the Club? At Mr. Vid's Video Rentals you can join his VID Club for a monthly membership fee of $30. Club members pay only$.85 to rent each movie. If you are not a member of the VID club, the movies rent for

50. ## Physics

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?

51. ## TRIG HELP ASAP

I really need help on this problem. A sector has area of 15 in^2 and central angle of 0.2 radians. Find the radius of the circle and arc length of the sector

52. ## physics

At a time t after being projected from the ground, a projectile is displaced x units horizontally and y units vertically above its point of projection. (Use any variable or symbol stated above along with the following as necessary: g.) (a) What are the

53. ## math

A woman has a total of $9,000 to invest. She invests part of the money in an account that pays 5% per year and the rest in an account that pays 12% per year. If the interest earned in the first year is$730, how much did she invest in each account?

write sentence about desert animals. use each given word in the past tense. they give word find, think, run, go, take my son write- a kangaroo rat needs to find nuts to survive. my son write- i think a rattle snake can confuse you. my son write- a scorpion

55. ## Chemistry

At 20 degrees celsius ,if the equation is C7H6O3(s)+C4H6O3(l)=C9H8O4+HC2H3O2(l), then how many liters of acetic acid, HC2H3O2 , would be formed if the density of HC2H3O2 is 1.05 g/ml?

56. ## algebra

Sophie bought 23 cans of cat food for x dollars. Write an expression to show the cost of one can of cat food

57. ## Global History

This concerns the feudal powers in Japan: Ok, so in many ways the relation between China and Japan reflect what we've already seen between Russia and Byzantium. What were the most important things that Japan borrowed from China? Chinese influence in Japan

58. ## Physics

A -6.00 µC charge is moving with a speed of 6.60 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 73.0 A in a direction opposite to that of the moving charge. Find the magnitude and direction of

59. ## Geometry

Angle A and Angle B are complementary andgles and the m Angle A = 58 degrees, what is he measure of the supplement of Angle B. This is what I did Angle A and Angle B = 90 degrees, mAngle A = 58 degrees 90 - 58 = 32 degrees 180 - 32 = 148 M angle B

60. ## Psychological Statistics

A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about

A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.) Select true or false for each statement. 1) With the

62. ## Dalton's LAw

what is volume of hydrogen at STP of hydrogen collected over water at 10 degrees and 105.5 kPa

63. ## english

i need help with plot summary of the painted door. i not know what to write for introduction. this be how it start out. Straight across the hills it was five miles from John's farm to his father's. But in winter, with the roads impassible, a team had to

64. ## physics

If a spherical shell has a uniform volume density of 1.84nC/m^3, inner radius a=.1m, outer radius b=.2m, what is magnitude of electric field at radial distances r=a, r=b, r=3b

97. ## chemistry

How many grams of magnesium metal are produced by the decomposition of 19 grams of magnesium chloride?

98. ## Pre-Calc

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

99. ## physics

our objects are situated along the y axis as follows: a 1.94 kg object is at +3.27 m, a 2.76 kg object is at +2.18 m, a 2.78 kg object is at the origin, and a 3.99 kg object is at -0.360 m. Where is the center of gravity of this system?

100. ## Geometry

The base of a regular pyramid is a hexagon whose sides have length 5 ft. If a lateral edge of this pyramid has length 9 ft, what is the surface area of the pyramid?

101. ## Language arts and writing

The first compact microwave ovens were sold in 1960. Everybody didn't use them until the 1980's.

102. ## Physics

A med tech student pushes a 30-kg carton of books across the floor of her dormitory by exerting a constant force of 185 N at an angle of 37 degrees with the horizontal. If the opposing force of friction is 70 N, how much work does he do as he moves the

103. ## Mirobiology

give three situations where the negative staining procedure is used.

104. ## accounting

quarter sales revenue profit/(loss) 1 400 (280) 2 1200 360 3 1600 680 4 800 40 total 4000 800 Number of visitors for the year 50000. Next year management anticipates an increase in unit variable cost of 10 percent and a profit target of 1 million.

105. ## English

Which statement about the narrator's son is the best example of pathos? A. "The boy had a good appetite, so I didn't have to make him eat." B.He was four, a little brown boy in blue rompers, and when he talked and laughed. . .his voice was soft. . ." C.I

106. ## english

Identify the sentence with the correct capitalization. a) My Spanish dictionary says that hola means hello. b) My Spanish Dictionary says that Hola means hello. c) My spanish dictionary says that hola means hello. d) My spanish dictionary says that Hola

121. ## biology

does the human ovum produce any chaemotactic hormones or sugars to attract sperm cells?

122. ## algebra

Sum of two numbers is 95. one number exceeds the other by 15,find the number?

123. ## Physics

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of

124. ## Physics

An -particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.10 106 V and then enters a uniform magnetic field whose magnitude is 3.10 T. The -particle moves perpendicular to

125. ## rome

in forming their government how many executives did rome decide to have: 1, 2, 3, or 4?

126. ## geometry

Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates

127. ## Math

The clothing stor had a sale for 75% off most of its shoes.Malik selected a pair of shoes that regulary sell for 80. What is the sale of Malik's new shoes.

128. ## math

1/4(90-x)+1/5(180-x)=36

129. ## math

solve using multiplication method: 8x-9y=-15 -4x=19+y

130. ## algebra 2

Find the slope between points (2, 3) and (-1, 0)

131. ## calculus

Given the vector u=,v=. A) compute the area of the parallelogram determined by u and v . B) compute the vector. UxV

132. ## math

An airplane left chicago O'Hare airport at 9:50 AM and arrived at Detroit,Michigan at 11:45 A.M.How long did the trip take?

138. ## math

A square and a rectangle each have a perimeter of 100 feet. Explain how this is possible.

139. ## Pre-Cal

In terms of x, write expressions for the length, width, height, and volume of the boxes created in the activity. I just need an example, so i'll just give one box. X-1 length-20 width-14 height-1 volume-280

140. ## poetry

what is the genre of the poem: tonight i can write by pablo neruda?

141. ## chemistry

Give the name for each of the following: (a) SiF4----Silicon tetraflouride (b) CuBr2---Copper dibromide (c) MgCO3---Magnesium Carbonate (d) NH4NO3----Ammonium Nitrate

142. ## English

Writeacher, thank you very much for all your explanations!! I think the part of the integration of the project into the students' curriculum should be improved. This is what I translated. I think certain points should be omitted. I also wanted to add a new

143. ## World History

what were the results of the religious upheaval in Europe during the 1500s? How was the church affected? Thanks -MC

144. ## English

Thank you very much. As for my project, I translate the presentation of the school literally (without changing any single word). I I think we should shorten sentences and choose more appropriate words. 1) The scientific high school …… was founded in

145. ## math

In a recent survey of 100 women, the following information was gathered. 30 use shampoo A. 43 use shampoo B. 33 use shampoo C. 13 use shampoos A and B. 7 use shampoos A and C. 5 use shampoos B and C. 3 use all three. How many are using shampoo A only

146. ## trig

tan theta= square root of 3 / 3 if o degrees is less than or equal to theta less than o equal to 360

147. ## Physics

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of

148. ## Socials (help)

Medieval Castles: what allowed a castle community to function independently for a long period of time? I have a big project to do and I did all the other questions already but I'm stuck with this one. Please Help!

149. ## Science

What environmental niche is most suitable for an animal that eats fruit? A.artic tundra B.temperate swamp C.temperate plains D.tropical forest D? Which of these is NOT an adaptation for the Fennec Fox? A.beige coat to camoflauge B.small ears to prevent

150. ## algebra

Wally collects 15 baseball cards each week. He gave 10 cards to his friend james. write an expression to show the number of cards that wally has left

151. ## math............ pls help fast

Find the limit or show that it does not exist for: Limit as X approached infinity X^4-3X^2+X ---------------- X^3 - X + 2

152. ## law

What are some of the arguments in favor of and against victim involvement in the criminal justice system?

153. ## law

How has the treatment and handling of victims by the criminal justice system changed over time?

154. ## geometry

The coordinates of triangle ABC areA(0,0), B(2,6), and C(4,2). Using coordinates geometry; prove that, if the midpoints of sides AB and AC are joined, the segment formed is parallel to the third side and equal to one- half the length of the third side.

155. ## thermochem

A meal is 8000kJ. If all the energy is converted to heat, how much iced water with a temperature of 0 degrees must a person drink to maintain body temperature of 37 degrees? How do I solve this - using the fact that 1mL water by 1 degree is 4.2Joules? Heat

156. ## Physics

If youre in a room and the width is 8m length is 14m height is 2.5m how much air is in the room in kg? -Thanks! Your help is appreciated!

157. ## geometry

The coordinates of triangle ABC areA(0,0), B(2,6), and C(4,2). Using coordinates geometry; prove that, if the midpoints of sides AB and AC are joined, the segment formed is parallel to the third side and equal to one- half the length of the third side.

158. ## algebra

1. Courtney's dog sleeps in a crate that is 24 inches wide, 30 inches tall, and 40 inches deep. What is the volume of the dog crate?

159. ## math

the digit in the hundredsths place is 0.1 larger than 1/10 ofthe digit in the hundreds place the numbers i hve so far r 952.2_6

160. ## Physics

One component of a magnetic field has a magnitude of 0.080 T and points along the +x axis, while the other component has a magnitude of 0.034 T and points along the -y axis. A particle carrying a charge of +1.00 10-5 C is moving along the +z axis at a

161. ## Maths

A farmer wishes to plant 6 trees in 4 rows so that each row contains 3 trees. How can this be done?

162. ## law

The estate tax only affects the wealthiest __________ of Americans. A. 1% B. 2% C. 5% D. 10% im confused between B n D

163. ## algebra

: If Bobby fives Jane three pens, they have the same number of pens. But if Jane gives Bobby three pens,he will have three times as many pens. How many pens does each student have?

164. ## Science

What environmental niche is most suitable for an animal that eats fruit? A.artic tundra B.temperate swamp C.temperate plains D.tropical forest D? Which of these is NOT an adaptation for the Fennec Fox? A.beige coat to camoflauge B.small ears to prevent

165. ## physics

When boiling water begins to turn to steam, which of the following remains the same in both the liquid and the vapor?

166. ## Chemistry

Find the pressure of a gas that originally had a volume of 25 L, pressure of 67kPa at a temperature of 100 Kelvin. When the gas was heated to 200 Kelvin, it had a volume of 56L. How many moles would be present if the gas in the above question was an ideal

What is an occupation that can symbolize the value of the United States? I was thinking that the U.S Army Force be one?

168. ## algebra

At a local ice cream shop, you can choose from a collection of 18 different toppings. If you want to choose at least one topping, how many different topping combinations are possible (assuming no repeat toppings)?

169. ## science

In 91% (by volume) isopropyl alcohol (a large [compared to water], flammable molecule) solution, there are only two substances: the alcohol, and water. So when I poured 50 mL of 91% isopropyl alcohol into a graduated cylinder, how many milliliters were

170. ## Physics

Ultrasound with a frequency of 4.275 MHz can be used to produce images of the human body. If the speed of sound in the body is the same(1.79 km/s) as in salt water, what is the wavelength in the body?

171. ## physics

Assume L1 = 0.860 m and L2 = 0.437 m. Calculate the normal force exerted by the floor on each hand, assuming that the person holds this position. Assume the force on the left hand is the same as the force on the right hand.

172. ## physics

Many professional golfers can hit a golf ball 300 meters with a driver. The face of a driver and the swing pattern causes the ball to leave the club at around 18 degrees from the horizontal. Assuming the ball travels exactly 300 meters in the air before it

173. ## physics

You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

174. ## Ethics

I need help in understanding what the viewpoint would be of a virtue ethicist in deciding who should receive a liver transplant. There are 5 candidates: Bob- is 40 years old unemployed, homeless with a severe drinking problem and a criminal record.He was

175. ## history

How was Fort William Henry massacre used by the British and the American colonists to justify brutality against the Indians? HELPPPP PLEASE

176. ## World History

I would like to know anything about the hollocoust and world war 2!

177. ## english

i read the story the painted door today anyone by chance read this story? it very long so i not want anyone waste their time reading it.

178. ## Math

The area of a rectangle is 6n(to the power of 2) + n - 2. What is the expression that represents the perimeter of the rectangle?

179. ## Physics

You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

180. ## physics

You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

181. ## Physics - Verification

A skier (75 kg) goes down a 15* slope. The coefficient of kinetic friction between the skis and the snow is 0.185. The length of the slope is of 500m. a) What is the work done by gravity? Answer) Wmg = mgd = 75kg(9.8N/kg)500m(sin15) = 354 977 J Is it cos

182. ## chemistry

Half reaction E0,(v) Ni2+(aq) + 2e-  Ni(s) -0.23 Co2+(aq) + 2e-  Co(s) -0.28 Fe2+(aq) + 2e-  Fe(s) -0.41 Cr3+(aq) + 3e-  Cr(s) -0.74 Mn2+(aq) + 2e-  Mn(s) -1.03 Which of the following metals could be used successfully to galvanize steel?

183. ## physics

A Physics book , mass unknown , is dropped from a table . its velocity just before hitting the ground is 9.39 m/s . what is the height of the table ?

184. ## MATH

If a flagpole casts a shadow of 300 ft. and a person standing 6ft tall casts a shadow of 400 ft. at the same time of day. How tall is the flagpole?

185. ## algebraic equation and inaqualities

in a triangle XYZ,the measure of angle Y is 40 more than the measure of angle X.the measure of angle Z is 10 less than three times the measure of angle X.find the measure of angle X

186. ## English

Here is the second part of the school description I need to translate. Some words are unclear and the sentences are too wordy. I need your help to improve them. 1) third branch includes the study of two foreign languages: English and French and addresses

187. ## Spanish

Please check En mi dormitorio, hay una cama cómodo con una manta azul y marrón claro.This is suppose to say in my bedroom, there is a comfortable bed with a blue and light brown blanket. Hay dos alfombras azules. This is suppose to say there are two blue

Which instance is an example of internal mechanism working to prevent crimial behavoir?

189. ## math

6.4 - Y = 6 2/5 What is Y

190. ## Statistics

I am trying to double check my answer, I completed a spatter blot of an assignment, 20 student, variables study hours and final exam scores, the two I am suppose to predict would be study hours of 5 and study hours of 11. How would I put that in an

191. ## Medical Terminology

Why is it so important to know terms that are associated with all of thedifferent body systems even if you were to only work with onesystem?

192. ## physics

This is a theory question. Let's say I go down a slope on my skis. When I want to calculate the Work done by air resistance, do I take the angle of the slope in consideration? For example, will it be: Wr = -Fr * d * sinTHETA or will it only be Wr = -Fr * d

193. ## math

how do you renaname the fraction 2/9 in eighteenths

194. ## english112

My teacher sent this back to me. ("Ignoring" is not a method of argument. It is a method of dealing with offensive symbols. What methods of argument does Bok use? I am having to come up with a thesis for this essay can you please help me?Derek Bok

195. ## spanish

Translate into Spanish: I have a small nose. Tengo la nariz pequena or Tengo una nariz pequena. I know a = una, but my teacher was saying something about they always use the definite article with parts of the body. So do you always use el/la instead of

196. ## algebra

V=h[( (a+b)/2)^2 + 1/3( (a-b)/2)^2] showing all steps that it reduces to following: v=h/3(a^2 +ab+b^2)

197. ## algebra

give the general formulas for the integer solutions of x^2 + y^2 = z^2. what is x,y, and z when m=18 and n=11

198. ## math

I have a question. I think I'm wrong, so I want to ask if it's right. If I do 3/4 x 1 5/6 x 7/4 x (-2 3/8) would the answer be negative?

199. ## math

a ball has a volume of 45. the radius of the larger ball is 3 times the small ball what is the volume?

200. ## math

find the smallest rectangular area of wrapping paper that can be used to wrap a present that is 22 inches by 20 inches by 10 inches. The paper cannot be cut.

201. ## Physics - Question

When I'm asked to find work done by air resistance against a skier on a slope, will I have to do: Wr = -Fr*d or is it affected by an angle: Wr = -Fr*d*cosTHETA I was thinking that it isn't because air resistance isn't a specific force acting at one spot

202. ## Math

The cafeteria has 16 tables. Each table can seat 14 students. What is the greatest number of students that can be seated at one time? A.30 B.80 C.204 D.224 D?

203. ## physics

A ball of 250g hits the floor at a velocity of 2,50 m/s at an angle of 70* relative to the vertical. The vertical force in function with time between the floor and the ball is: from 0 to 50 N : from 0 to 1 sec. from 50 N to 100 N : from 1 to 2 sec.

204. ## algebra

the soccer team is designing a triangular flag for their games. the length of the base is 5 inches more than the height,h. express the area of the flag as a function of the height.

205. ## Chemistry

A certain first-order reaction has a rate constant of 2.60×10−2 s-1 at 18 C. What is the value of k at 55 C if Ea = 90.0 kj/mol?

206. ## math

At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vice-president and in the

207. ## algebra

how would i solve this 3x+1y=11.50

208. ## trig

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

209. ## intro to busines

what are ome of the operations management practices that can help bring manufacturing back to U.S.?

210. ## algebra

please check these answers and change if needed. thank you Label each statement true or false, if false change underlined portion. C. if -4 < -2t + 6 < 10 then this is underlined 2 > t + 6 > -5 I marked false, i think it should be -2 < t < 5. D. If |y + 8|

211. ## math

1/2-m/22>-1/11

212. ## Math

10 Books Fit In A 1ft Container And There Are Currently 10,000 books what is the volume the must fit all the cubic containers

213. ## physics

A shot putter projects the shot at an angle of 37 degrees above horizontal with a force of 980 Newtons (N). What are the magnitudes of the vertical and horizontal components of the 980 N force?

214. ## real analysis

How to find the perpendicular to the victor space R^k

215. ## math

simplify 8x-2y-x+5y

216. ## law

If the decedent owned an interest in a qualifying family-owned business, a deduction from the gross estate in the amount of up to __________ may be available. A. $1,100,000 B.$1,200,000 C. $2,100,000 D.$2,200,000

217. ## social

what other strategies have been proposed to end child labour?

218. ## maths

Evaluate using partial fractions x^4 - 16/x^3 - 8

219. ## Chemistry

Why Energy of is smaller than π2px and π2py in case of O2 but it is opposite in case of N2.

220. ## Chemistry

On the basis of MOT, explain why the stability of N2 decreases on ionization but the inverse is true for O2.

221. ## physics

Calculate the height of the brain above the heart for an animal with an additional blood pressure of 498 mmHg in the heart. Use ρ = 1.057 g/cm3 for the density of blood. ???????

222. ## Chemistry

What you can predict about a reaction whose activation energy is zero?

223. ## math

corey made 32 pints of water for a party he will move it to a one galloon jug how many one galloon jugs will he need

224. ## Alegabra 1

26 ÷ 23 Sarah is trying to solve the above expression. She takes the following steps: 1. Sarah checks to see that both numbers have the same base. Since they both have the same base, she decides to work with the exponents. 26 ÷ 23 2. Sarah now adds 6 and

at the end of cytokinesis, how many chromatids will be found in each daughter cell? explain.

226. ## physics

Two charged particles q1 and q2 were initially at rest at a seperation of 2m in a gravity free space. Then evaluate after what time seperation between them will be 8m (neglect electromagnetic losses) .

227. ## Algebra

Let say the problem is (x+2)-(x-2). Would I distribute the (-) to the (x-2) before I FOIL or is the problem saying x+2-x+2? Thanks

228. ## physics

The specific temperature at which a substance changes from a liquid to a gas is an example of a?

229. ## law

To be eligible for the Marital Deduction, the property must pass "__________." A. eventually B. indirectly C. outright D. quickly is it D

230. ## physics

When boiling water begins to turn to steam, which of the following remains the same in both the liquid and the vapor?

231. ## physics

Atoms in a gaseous state have?

232. ## English

What kind of clause would (when painters looked at rapidly moving horses.) would it be a adverb,adjective, or noun?

233. ## law

One of the key purposes of the probate process is the payment of __________ and taxes. A. dues B. attorneys C. debts D. courts is it B

234. ## Statistics-Matrix of Transition Probabilities

Given the following matrix of transition probabilities, write three equations that, when solved, will give the equilibrium state values. P = large bracket with a b on top and c d directly under that, closed large bracket. Thanks.

235. ## algebra 2

Find the slope between points (2, 3) and (-1, 0)

236. ## algebra

Simplify (-3)^-1

237. ## algebra 2

Find the slope between points (2, 3) and (-1, 0)

238. ## algebra 2

Find the slope between points (2, 3) and (-1, 0)

Air was sampled through 37mm PVC membrane filter for seven hours and thirty seven minutes. The initial air flow rate was pre-calibrated twice at 49.7 and 50.1 secnds per liter. What volume of air at STP (25 C and 760mm Hg) was sampled in liters? same

240. ## physics

Assume L1 = 0.860 m and L2 = 0.437 m. Calculate the normal force exerted by the floor on each hand, assuming that the person holds this position. Assume the force on the left hand is the same as the force on the right hand.

241. ## physics

How does your mass on Earth compare to your mass on Mars?

243. ## calculus

Find the unit vector that is parallel to but has opposite direction as the vector m=

244. ## physics

A 1.92 kg cart and a 3.7 kg cart both slide toward each other at 1.34 m/s on an air track. They collide and stick. The combined mass moves at what speed in m/s

245. ## egd

what does egd stand for?

3x-5=5x-3

247. ## Calculus

lim (sin 4x/3x) x->0 Is the answer 4/3 or -3/4?

248. ## Communication

When a teacher writes an exam, they think about what aspects of student learning they want to test.

249. ## Math

Tara has 18 coins she puts them into 2 equal groups. How many coins are in each group.

250. ## English

What are some good websites that help you create your own personalized avatars?? I need to create my own avatar for English class, but I can't find a good website. I need a website that helps create awesome avatars, such as those in video games. Any

251. ## Math

The 3rd and 12th terms of an arithmetic progression are 12 and -24 respectively. What is the 50th term?

252. ## physics

n boat starts from rest and accelerates at a constant rate to a final speed of 28 m/s over a distance of 780 m. How much time will this take?

253. ## biology

the importance of these organic compounds ( carbohydrates, proteinds, lipids) in the cells and tissues of living things

254. ## physics

Assume L1 = 0.860 m and L2 = 0.437 m. Calculate the normal force exerted by the floor on each hand, assuming that the person holds this position. Assume the force on the left hand is the same as the force on the right hand.

255. ## math

what is A=____,b=8.1 mm,h=16mm

256. ## Pre-Cal

I have a piece of paper 22 in. long and 16 in. wide. I cut a 7 in. x 7 in. square from each corner. I then fold up the sides and form a box with an open top. What is the volume of this box?

257. ## Mathg

Mark has 16 marbles. He puts them into 2 equal groups. How many marbles are in each group.

258. ## Physics -Electricity

Several appliances are supplied with a potential difference of 314 V and are operated continuously for a 24 h period. How much energy is used if the appliance is a 30.0 W stereo? Answer in units of J How much of energy is used if the appliance is an

259. ## Mathg

Mark has 16 marbles. He puts them into 2 equal groups. How many marbles are in each group.

260. ## Living Environment

Explain why proteins are polymers but lipids are not.

261. ## math

A disc jockey has 10 songs to play. Seven are slow songs, and three are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 10 songs if The songs can be played in any order. The first song must be a slow song and

262. ## math

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 33 said they drove alone. 29 rode in a carpool. 35 rode public transportation. 6 used both carpools

263. ## language arts

stream is to river as allley is to

264. ## Social studies

Without our two great political parties cutting across economic and geographic interests,democracy as,we,know it could never been made to function

265. ## Math

Your softball team is raffling a stereo system and the total off 800 tickets have been sold. Your family bought 20 tickets. What is the probabilty that your family will not win?

266. ## pHysics

A ball of 250g hits the floor at a velocity of 2,50 m/s at an angle of 70* relative to the vertical. The vertical force in function with time between the floor and the ball is: from 0 to 50 N : from 0 to 1 sec. from 50 N to 100 N : from 1 to 2 sec.

267. ## Chemistry

What is the volume of 4.00 grams of air if the density of air at the time of the measurement is 1.19 g/l?

282. ## physics0987

why is electric potential a more useful quantity for most calculations than electrical energy is?