# Questions Asked onNovember 28, 2010

1. ## algebra

A plane that carries mail makes a round trip each day from Chicago to New York. It makes 3 intermediate stops on the way to New York and 1 intermediate stop on the way back to Chicago. Suppose you make a graph of the altitude of the plane for one day, with

2. ## Algebra

find the unit rate for number of parts manufactured per hour if 1630 parts are made in 6 hours. round to the nearest integer. SHOW ALL WORK.

3. ## Physics

Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the

4. ## chemistry

Which of the following equations does not represent an oxidation-reduction reaction? 3Al + 6HCl → 3H2 + AlCl3 2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3 2H2O → 2H2 + O2 2NaI + Br2 → 2NaBr + I2 Cu(NO3)2 + Zn → Zn(NO3)2 + Cu

5. ## chemisty

does NF3 follow the octet rule

6. ## Math

Alfonso got an 87.5% on his test. He got 21 right. How many questions were on the test??

7. ## math

Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own no cats?

8. ## math

a car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?

9. ## math 12

A committee of students and teachers is being formed to study the issue of student parking privileges. Fifteen staff members and 18 students have expressed an interest in serving on the committee. In how many different ways could a five-person committee be

10. ## math

Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like no green jelly beans?

11. ## chemistry

An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz . What is the value of for the level in which the electron originated? Please show each step and the equation.

12. ## Chemistry

In a solution of copper(II) chloride, the following equilibrium exists: CuCl42-(aq) (dark green) + 4H2O(l) Cu(H2O)42+(aq)(blue) +4 Cl-(aq) Predict the shift in the equilibrium and draw a graph of concentration versus time for relevant reactants to

13. ## Physics

Refrigerator Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which

14. ## math

Two cards are drawn without replacement from an ordinary deck of 52 cards. What is the probability that the second card is a face card, if the first card was a queen? Would this be 11/51?

15. ## philosophy

"Happiness belongs to the self-sufficient." - Aristotle What does it mean? I don't get it...

16. ## psychology

the brain and it's structured functions

17. ## Trig

assume a pulley has a radius of 12.96 cm. If it takes 18 seconds for 56 cm of belt to go around the pulley, find the angular velocity in radians per seconds

18. ## English

I need your help to paraphrase the description of the Merchant in Chaucer's Prologue to the Canterbury Tales. I'll include the description at the end. Thank you . 1)The merchant had a forking beard and wore a motley (I need a symonym: multicoloured) dress,

19. ## college math

how many grams of NaOH are needed to make a 30% w/w solution using deionized water as the solvent

20. ## physics

A ball player wishes to determine her pitching speed by throwing a ball horizontally from an elevation of 3.0 m above the ground. She sees the ball land 15 m down the range. What is the speed of the ball as it leaves her hand?

21. ## chemistry

what is the cation and anion of Na3PO4? thanks

22. ## chemistry

The heat of vaporization of liquid water at 373 K is 40.7 kJ/mol. The value of the enthalpy change when 2.00 g of steam condenses at 373 K is?

43. ## Chemistry

How many milliliters of 0.710 M HCl are required to react with 47.80 grams of CaCO3 ? Given the balanced reaction equation: 6 FeCl2(aq) + K2Cr2O7(aq) + 14 HCl(aq) 6 FeCl3(aq) + 2 CrCl3(aq) + 2 KCl(aq) + 7 H2O(l) How many moles of FeCl2(aq) are required to

18. Which of the following is not a ramification of too much or too little status in an organization? a. it inhibits communication b. solidarity is not developed c. it interferes with work d. it causes resentment and conflict e. it causes communication

45. ## geometry

if the diagonals of a rhombus is 12 and 16 what is the measure of a side of the rhombus 5,,20,10 square root 3

46. ## Statistics

A Swedish study used 1360 patients who had suffered a stroke. The study randomly assigned 684 patients to receive a placebo treatment and the rest to receive an aspirin treatment. Out of those who received the placebo treatment, 28 died due to heart attack

Can you please check my answer? An American football field is a rectangle 120 yards long (including both end zones) and 53 1/3 yards wide. What is the area of an American football field? my answer: 6360 square yards

48. ## chemistry

what is the molecular mass of a solute if a solution containing 150 g of that solute and 1.0 kg of water has a boiling point of 102.0 degree c? (Kb= 0.512 degree C/m)

49. ## Chem

What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

50. ## math

A battalion 20 miles long advances 20 miles. During this time, a messenger on a horse travels from the rear of the battalion to the front and immediately turns around, ending up precisely at the rear of the battalion upon the completion of the 20-mile

51. ## Math

An object is dropped from a hot-air balloon 1296 feet above the ground. The height of the object is given by h=-16(t-9)(t+9) where the height h is measured in feet, and the time t is measured in seconds. After how many seconds will the object hit the

52. ## chemistry

Calculate the pH of 3.9 10-8 M HNO3.

53. ## MATH

Ratinalize the denominator. Assume all varibles represent positive numbers. Sqrt(18)/x

54. ## Math

one way to resize a ring is to fill a bar into the ring.suppose a ring that is 20 mm in diameter has to be resized to fit a fingure 16 mm n diameter what is the length of the bar that should be inserted in order to make the ring fit the fingure? ( Hint:

55. ## chemistry

What is the pH of a solution of vinegar, which is 5.00% (w/v) acetic acid (CH3COOH, Ka = 1.8 e-5).what is the % dissociation?

The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 6.0 rev/s in 12.0 s. At this point the person doing the laundry opens the lid, and a safety switch turns off the washer. The tub slows to rest in 11.0 s.

A quadrilateral has angle measures of 71 degrees, 28 degrees, and 115 degrees. Which is the measure of the last angle?

58. ## Statistics

A student studies for a statistics exam where all questions are true or false. A reputable source indicates that with studying the student has a 90% chance of answering each question correctly. There are only three questions on the test. What is the

59. ## sociology

You are asked to come up with a plan to improve racial and ethnic relations in your community. What would your plan include? How would you address both individual and institutional discrimination in your plan? Explain.

60. ## Chemistry

1. State specifically how you would make a conclusive test for an iron (III) salt. 2. Which test for iron (II) ions is conclusive. 3. Suppose you have a solution containing both an iron (II) salt and an iron (III) salt. How would you proceed to identify

61. ## physics help?

A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 16.1 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude

62. ## Chemistry

How many grams of Ni(OH)2 are produced from the reaction of 45.0mL of 1.75 M NaOH solution?

63. ## Trigonometry college

Use a calculator to solve csc (theta) = -3. I know the answer is 3.48 and 5.94 but I need the steps to take on the calculator to arrive at the answer. I have a ti-84 calculator. thanks!

64. ## trig

Find the values of the six trigonometric functions of the angle in standard position with the terminal side passing through the point P(-4, 3).

65. ## Microeconomics

How does a firm maximize their total revenue? What happens when a firm raises its price in a market in which the price is in the inelastic range of the demand curve?

66. ## pre algebra

THe second of three numbers is 5 less than 4 times the first. The third is 9 less than twice the first. If 4 times the third os decreased by the first, the result is 6. find the three numbers.

67. ## Chemistry

One proposed design for a Mars rover uses a methane gas fuel cell as its power supply. The methane fuel can be made on Mars using a chemical reaction that has been known for over 100-a the Sabatier methanation reaction: C02(g) + 4H2(g) CH4(g) +2H2O(g)

What is the role of the state governments under the articles of confederation?

69. ## algebra

Functions of the same famil have the same... (?) Can someone help with the answer??

70. ## Chemistry

12.5 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 675 mL of solution. Calculate the molarity of the KCl solution.

71. ## Math

The path of a cliff diver as he dives into a lake is given by the equation y= -(x-10)^2+75, where y meters is the divers height above the water and x meters is the horizontal distance travelled by the diver. What is the maximum hight the diver is above

72. ## english

i have to write a research paper on SAP Applications and i need some authentic websites ?

73. ## Calculus

6x-3y=4 find dy/dx using differentiating implicity

74. ## chem

what is the gram formula mass of Li2SO4 ?

75. ## math

f(x) = -x squared + 1 for x= -3

76. ## calculus1

x^5-5y=6-x find dy/dx using differentiating implicity

77. ## physics

Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s later. How high is the roof? How far from the edge of the roof does the ball hit the ground?

78. ## calculus2

x^2+2y^2-11=0 find dy/dx using differentiating implicity

79. ## calculus3

x^2/3+y^2/3=5 find dy/dx using differentiating implicity

80. ## calculus4

2y^3-y=7-x^4 find dy/dx using differentiating implicity

81. ## Math

What is 4/6XDivided by 19xy ?

82. ## calculus5

(y^2+2)^3=x^4y+e^2 find dy/dx using differentiating implicity

83. ## Chemistry

How do I figure out what ions are present in a compound? Is it as simple as separating the compound? Like HCl --> H+, Cl-

84. ## Literature

What are some similarities between the Wife of Bath's Tale and The Merchant's tale (by chaucer)?

85. ## physics

a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?

86. ## chemistry

a hydrated salt is a solid that includes water molecules within its crystal structure. a student heated a 9.10-gram sample of a hydrated salt to a constant mass of 5.41 grams. what percent by mass of water did the salt contain?

87. ## Math

Explain how you can tell (without graphing it) that the rational function r(x)= x^6 +10 / x^4+8x^2+15 has no x intercept and no horizontal, vertical, or slant asymptote. What is its end behaviour? Please help? thankq

88. ## algebra

find the range of the given domain {-1,0,1} f(x)= 3x^2-2x+2

89. ## physics

a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?

90. ## chemistry

a graph of melting point against relative atomic mass for the alkali metals on the same graph, a plot of the boiling points with a sentence to describe the information the graph gives

91. ## ELA

Is the Introduction below connection to the main Idea Vampire Survival: Vampires have become the most interesting and popular immoral creature during the years. Characters as a vampire in a movie or even in book! Now… People might wonder that are

92. ## Physics

Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50 N while the other pulls to the left with a force of 40 N. Are the forces on the bone balanced or unbalanced? How do you know? What is the net force on the bone?

93. ## physics

Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s later. How high is the roof? How far from the edge of the roof does the ball hit the ground?

94. ## math 12

From 85 Records at D.S. Collegiate, the following data was collected: 12 studied Sociology, Economics and Accounting, 27 studied sociology and accounting, 20 studied economics and accounting, 21 studied economics and sociology, 36 studied sociology, 36

95. ## Chemistry

4.745 eq. of magnesium will displace how many grams of silver from a silver nitrate solution? I have written the equation as follows: Mg + 2AgNO3 = Mg(NO3)2 + 2Ag I'm not sure how to proceed with converting the 4.745 eq. Any help would be appreciated.

What fraction is 2/3 of 3/4 ? and 12-m = 5 2/3 ? Thank you for your help.

97. ## math

wat is the rule for Input-1,2,3,4,5 Output-3,5,7,9,11

98. ## History

What features of the constitution make it flexible enough to apply to the nations today?

99. ## psy 240

mary is a single mother of one child. She has had difficult sleeping for the last month.Define her disorder

1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3 - 9x + 5 at the point (3,5) [* for a. the answer that I obtained was y-5 = -1/18 (x-3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve

101. ## Finance

A company issues a 10,000 par value 10-year bond with 8% annual coupon payments. If the yield rate is 6%, calculate the price of this bond.

102. ## chemistry

Write balanced equations for the following: K3P + Ge = Al2(CO3)3 + AgBr Cr(ClO3)3 =

103. ## ELA

Does this introduction have a connection to the main idea "Vampire Survival" Vampires have become the most interesting and popular immoral creature during the years. Characters as a vampire in a movie or even in book! Now… If you believe that vampires

104. ## algebra II

The number S of ant species in K Cyn can be modeled by the function S = -0.000013E squared + 0.042E - 21 where E is the elevation (in meters). Predict the elevation(s)at which you would expect to find 10 species of ants.

105. ## physics help me please

A 1220 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1990 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the

106. ## Algebra

-0.7(0.32 + 6x) = -3.3x

A company issues a 6-year bond with a face value of 5,000 and semi-annual coupons payments of $275. If the yield rate is 7%, find the price of the bond. asked by Kim 108. ## us 101 What tips for creating a study environment may be most effective for you? What might you do to make that study environment real for yourself? asked by Anonymous 109. ## 11th grade which ons is stronger 1)A solid cylinder of 2)A hollow cylinser of iron 3) A cylinder made up of slits of iron asked by physics 110. ## chemistry what is the percent composition by mass of water in a compound with a gram formula mass of 4905 g/mol asked by mike 111. ## CAL 1 DERIVATIVE f(x)=4t+1 (x,x+2) asked by help 112. ## physics Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job. asked by sarah 113. ## general psychology What possible factors could be causing workplace stress for Felicia? Identify and explain methods she could use to cope with these sources of stress. Write your observations in a report. asked by TANYA 114. ## physics please help A woman who weighs 4.33 X10^2 N is leaning against a smooth vertical wall, as the drawing shows. The height of the wall from her shoulder to her hand is .400m the angle at which she is laying on the wall is 50 degrees and the rest of the height at which asked by don 115. ## Teaching techniques 1. Which learning technique is frequently used in the expository model of teaching? A. Deductive thinking C. Discovery learning B. Inductive thinking D. Knowledge-based learning 2. Which technique is used after a student gives a wrong answer, and the asked by I. Kan 116. ## Finance A company issues a 6-year bond with a face value of 5,000 and semi-annual coupons payments of$275. Find the yield rate if the price of the bond is 6,500.

A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 16.1 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude

118. ## math

Two cards are drawn without replacement from a deck of 52 cards. What is the probability that both are tens, if the first card was a ten?

119. ## Chemistry

if it takes 20 h to convert 100g of reactant A to roduct C at 20 degrees celcius, approximately how many minutes would it take at 110 degrees celcius? I know the answer, I just don't know how to get the answer

120. ## geometry

a man builds a teepee in his back yard. the width of the teepee is 12ft. The height of the teepee is 8 feet. How long is the length of the pipes?

121. ## Stastics

To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded

122. ## chemistry

Ni+4CO=NI(CO)4 this reaction separates nickel from other solid impurities.Starting with 86.4g NI,calculte the pressure of NI(CO)4 in a container of volume 4.00L

123. ## algebra 1

hi. i'm confused so please help. thanks. 9 - x/6 = 7(x+1)/13 multiple choice a. 6 b. 13 c. 11 d. 12 thank you again.

124. ## Economics

Porter’s Five Forces Model to the American automotive industry.

125. ## History

What features of the constitution make it flexible enough to apply to the nations today?

126. ## Algebra II

What does it mean when the domain of a function is (-‡,‡)? What about a range of,say, (2,‡)? (In case it doesn't come out right, that symbol is the infinity symbol).

127. ## chemistry

A 75.0-\rm mL volume of 0.200 M \rm NH_3 (K_{\rm b}=1.8\times 10^{-5}) is titrated with 0.500 M \rm HNO_3. Calculate the \rm pH after the addition of 13.0 mL of \rm HNO_3.

128. ## ICT

which one is an important property of fiber cable? 1)noise 2)reflection 3)interference 4)attenuation

129. ## physics

A record player is spinning at 32 rpm when the motor is switched off. After 6.8 seconds the angular speed has decreased to 20 rpm. Calculate the frictional torque if the record player can be treated as a solid wheel of mass 2.4 kg and radius 15 cm. A)

130. ## ICT

which of the devices uses reflected light to determine the location of pencil marks on test answer sheets and similar form? 1)barcode reader(BCR) 2)magnetic ink character recognition(MICR) 3)optical mark reader 4)mouse

131. ## Chem

The ka expression for HTe- is?

132. ## English

Can you please tell me if the following sentences are possible? Thank you very much. 1) A trochee consists of a stressed syllable followed by an unstressed one. A trochee consists in a stress-unstress pattern. 2) The mirror is described as being

133. ## math

a room at the hamilton inn costs 104 dollars per night for two people there is a 19 dollar charge for an extra person write an algebric expression thaat shows the cost oper night for a family of four staying at the inn

134. ## chem

balance the equation:(i can balance the equation but the problem i have is finding the formula for the last part HC2H3O2(aq) + Ca(OH)2(aq) -> H2O(l) + find the formula here the last part would be CaOC2H3O2? im a little confused. did the O fromt he H2O come

135. ## math

using the expression you created above calculate the cost of the same family of four staying at the inn for 3 nights

136. ## OMG

I have been trying to get my question answered and it still haven't more then 1 hr you know when are you going to answer my and every one else's question

137. ## math 5th

Does one mile = 5280 feet?

138. ## math

the lest common denominator for the sum 3/8+5/12is 24 name a nother common denominatorthat you could use?

139. ## Math

Let AB and CD be two lines intersecting at point O. Let OP be the bisector of angle AOC, OT the bisector of angle POB, and OR the bisector of angle TOD. If angle POR = 25 degrees, find angle AOC and angle AOD.

140. ## math

find unit rate 40 textbooks weigh 120 pounds

141. ## Math

For 0 < x < 1, let f(x) = (1 + x)(1 + x4)(1 + x16)(1 + x64)(1 + x256) · · · Compute f to the power of -1 times 8 divided by 5 times f times 3/8

142. ## chemistry

Ni+4CO=NI(CO)4 this reaction separates nickel from other solid impurities.Starting with 86.4g NI,calculte the pressure of NI(CO)4 in a container of volume 4.00L

143. ## ethics

What kinds of things are contained in a businesses terms and agreements pages?

144. ## Programming

Write a program that allows the user to display a budget as a pie chart. After the user enters numbers into the four text boxes a presses the button, the pie chart should be displayed. When I push the button for my code it does not display anything. Could

145. ## Math

The path of a cliff diver as he dives into a lake is given by the equation y= -(x-10)^2+75, where y meters is the divers height above the water and x meters is the horizontal distance travelled by the diver. What is the maximum hight the diver is above

146. ## chemistry

Really need help on figuring out the formula for Iron Complex. The question was: 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2*SO4*6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. I got the moles of ferrous

147. ## chemistry

An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz. What is the value of n for the level in which the electron originated?

148. ## vaporization lab

A graduated cylinder containing some air is immersed in water. The height between the the water surface and the top of the water inside the graduated cylinder is 106mm. Calculate the correction that must be added to the barometric pressure to find the

149. ## Trig

A ship leaves its homeport and sails on a bearing of N28degrees10'E. Another ship leaves the same port at the same time and sails on a bearing of S61degrees50'E. If the first ship sails at 24.0 mph and second sails at 28mph, find the distance between the

150. ## Trig

A plane flies 1.3 hr at 100mph on a bearing of N40degreesE. It then turns and flies 1.5hr at the same speed on a bearing of S50degreesE. How far is the plane from its starting point?

151. ## Algebra 1

What is the solution of this question. You are taking a science course in which there will be four tests, each worth 100 points. You have scores of 88, 88, and 98 on the first three tests. You must make a total of 360 in order to get an A. What scores on

152. ## Math

A kickball is kicked upward with an initial vertical velocity of 3.2 meters per second. The height of the ball is given by h=-9.8t^2 + 3.2t where the height h is measured in feet, and the time t is measured in seconds. After how many seconds does the ball

153. ## stat

a credit card company estimated that 62% if its customers are males. The company is considering a randomly selected sample of five people.

154. ## calculus

find the area the region bounded by the graphs of the given equation y=81x,y=x^5,x=0,x=3

155. ## Trig

The angle of depression from the top of the building to a point on the ground is 29degrees30', the point of the ground is 36 meters from the top of the building. Find the height of the building

156. ## Physics

When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.29 m/s2. A careless crewman overloads the helicopter so that it is just unable to lift off. What is the mass of the cargo?

157. ## Trig

the angle of depression from the top of a building to a point on the ground is 32degrees30', how far is the point of the ground from the top of building if the building is 252m high?

158. ## SORRY

I am sorry Ms. Sue.....!!!!

159. ## math

the fee to join the local pool is $445.00 for the season. the pool is advertising a 25% discount for a new members. how much will a family save if they join my answer is$111.25

160. ## math

if a phone team asks each person to call two people, how many rounds will it take to call 64 people?

161. ## Trig

find sin(s+t), given that sin t=1/3, t in quadrant 2, and cos s = -2/5, s in quadrant 3

162. ## chemistry

You have 100.7 g of saccharin, a sugar substitute, and you want to prepare a pH = 5.80 solution. What volume of solution can be prepared? For saccharin (HC7H4NSO3), pKa = 11.70 (pKa = −log Ka).

163. ## chem

Complete and balance each of the following equations. If no reaction occurs, please enter NR in each answer box. (Type your answer using the format CO2 for CO2. Do not leave any box blank. Use the lowest possible coefficients.) ____Al4C3(s) + ___H2O

164. ## Trig

Find the value of tangent of angle A, given cos2A = 4/5, and A terminates in quadrant 2

165. ## chemistry

What mass of KOH is necessary to prepare 799.9 mL of a solution having a pH = 11.68?

a horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizantal, wood surface, as shown. A. Determine the mass of the box. B. calculate the magnitude of the acceleration of the box.[Show all work,

167. ## math

sara wants to buy a jacket on sale. its original price is $15.00.The sale is 25% off.How much will sara save by buying the jacket on sale ? my answer is$3.75 is it correct?

168. ## chemistry

Calculate the pH of a 5.20 10-3 M solution of H2SO4.

169. ## trig

Use the double angle formula to verify the identity cotxsin2x=1+cos2x

170. ## chemistry

A 0.20 M sodium chlorobenzoate (NaC7H4ClO2) solution has a pH of 8.65. Calculate the pH of a 0.19 M chlorobenzoic acid (HC7H4ClO2) solution.

171. ## Algebra 1

Translate to an inequality using the variable x. The number of people in the chess club is less than or equal to 21. Please let me know if this is correct. x >= (less than or equal to) 21 Thanks for you help

172. ## Math

The implied domain of f (x) = square x+5 is?

173. ## Very Important Question!!!

Please can someone tell me of any websites that can help me with algebra graphing, plotting, inequalities, and x & y intercept equations?

174. ## math

64 miles on 2 gallons;how many miles on 3 gallons? n=96

175. ## Physics

A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft) that has an initial stretch of 5.6 feet. What is the maximum distance the band is stretched?

176. ## math

6 feet in 2 yards; how many yards in 10feet? i think the answer is 3

221. ## physics help

Two thin rectangular sheets (0.15 m 0.50 m) are identical. In the first sheet the axis of rotation lies along the 0.15 m side, and in the second it lies along the 0.50 m side. The same torque is applied to each sheet. The first sheet, starting from rest,

222. ## Language

lesson 3 The Novel exam 00778900

223. ## math

need help with math 117 week 4 checkpoint

224. ## Physics

If the create has a mass of 90 kg and is 1.6 {\rm m} tall and 0.80 {\rm m} in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to

227. ## math

did you know when you try to find the least commen multiple of 3 numbers you have to divide by two after you get your answer my class (ms.lott in texas) told us that for some reason its doubling the number so always divide by two once you have crossed out

228. ## English

I need to find 2 medaphors in the book Among the Enemy by Margaret Peterson Haddix. I can't find them after I've read it twice.

229. ## Chemistry

in an endothermic reaction 1.energy is a product and the temperature of the surrounding environment increases 2.energy is a product and the temperature of the surrounding environment decreases 3.energy is a rectant and the temperature of the surrounding

230. ## Microeconomincs

Find an article that deals with business impact on the environment. and i want to know what does business impact on the environment mean?

231. ## science

Hi. I am conducting a science experiment to present to a class. Details of experiment below. Materials: 1 can of non-diet soda 1 can of diet soda 2 buckets of water 1. Fill bucket 2. Put can of non-diet soda into a bucket of water. 3. Wait for the can to

232. ## history

what is the purpose of the three-fifths compromise

233. ## Spanish

If this is what they are saying in Spanish- "Yo me llamo Joey.“ Vivo en Chicago pero soy de Springfield. “ How would I answer these two questions? ¿De dónde es Joey? ¿Dónde vive? Thank you

234. ## need physics help

d=2.1 a=? vi=0 and t=.60 and i have to use the formula d=vit+1/2at^2, how do i do this? can you please show work so i can understand.

235. ## Math

Im in advanced math and were doing Graphing Inequalities and im not sure how to do it.

236. ## college algebra

S = 100(1-e^kt) if 15000 books are sold after 1 year find the exact vaule of k?

237. ## Chemistry

write the formula for iron(II)bromide iron(III) sulfate

238. ## Chemistry

1. State specifically how you would make a conclusive test for an iron (III) salt. 2. Which test for iron (II) ions is conclusive. 3. Suppose you have a solution containing both an iron (II) salt and an iron (III) salt. How would you proceed to identify

239. ## Health

what is the drug classification of inhalants?

240. ## social studies

What did abraham lincoln do that was important for the thanksgiving celebration?

241. ## chemistry

For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?

242. ## Statistics

A community of 100 homes constructed in 2009 contains 47 that used conventional construction. The reminder used Energy Star building standards. A real estate agent is going to show a client 5 homes. What is the probability that 3 were built using

243. ## chemistry

Calculate the H+ concentration (M) of a 0.010 M solution of NH4Cl. Note that the Kb for NH3 is 1.8 e-5.

244. ## Math

a man plans to build a teepee in the back yard for his children. The distance between the stays is 12 ft. the height to the top of the teepee is 8 ft. what is the length of pipes required for the teepee?

245. ## chemistry

Which of the following is a conjugate acid-base pair? A. H2SO4, H2SO3 B. NH3, NO2 C. CH3OH, CH3COOH D. HF, H2F E. NH3, NH4+

246. ## Trigonometry

The Chrysler Building casts a shadow approximately 130 feet long on the street when the Sun's rays form an 82.9 angle with the Earth. Approximately how tall is the building? Round you answer to four decimal places.

The majority of the world’s diamonds comes from Country A and Country B. Suppose that the marginal cost of mining a diamond is $1,000 per diamond and that the demand schedule for diamonds is as follows: price quantity 6,000 5,500 5,000 6,500 4,000 7,000 asked by mary 248. ## english In a Word document, write a narrative paragraph that uses dialogue. The paragraph should demonstrate your ability to use sentence variety and proper punctuation. Your audience is your classmates. Begin with a 2-3 sentence description of the scene. Then add asked by lakesha 249. ## chemistry New to working with equivalent weights. Any help would be appreciated. A metal weighing 4.0080 g formed 4.1002 g of hydride. What is the equivalent weight of the metal? asked by Jennifer 250. ## statistics Four jelly beans are selected, one at a time from a bowl containing 6 black, 6 red and 6 green jelly beans. Let x represent the number of black jelly beans selected in 4 draws from the bowl. (A) If this experiment is completed without replacing the jelly asked by kelly 251. ## business A colleague, an amateur pilot, shows up at a critical meeting with some Japanese executives wearing a tie adorned with pictures of a P51D Mustang escorting a B-29 Superfortress (the Mustang is a World War II fighter and the Superfortress is the type of asked by maggie 252. ## Chemistry if metal A is placed in an ionic solution containing metal B ions and no reaction occurs, then metal B is most likely: A.) a halogen B.) higher on the activity series C.) not on the activity series D.) a catalyst asked by Lauren 253. ## Trigonometry Solve the equation on the interval 0 asked by Sarah 254. ## college Consider a gold sphere of mass 49 kg. Find its radius. asked by ciara 255. ## business You know that you have only$110 left before you hit the limit on your credit card, and you have $8 in your wallet. You are the host to three clients. One has just announced that he is considering the lobster dinner for$40. The other two clients nod their

While waiting outside a meeting room, you notice that the next middle manager making a presentation is rehearsing what he will say. The pants zipper of his blue suit is open and part of his white shirt is protruding

257. ## college

If I combined 25.0 grams of aluminum hydroxide with 75.0 mL of 0.500 M HNO3 how many grams of aluminum hydroxide would be formed?

258. ## geo

Describe the topography of the interior plains as you would see it if you were driving across the region from west to east to the Trans-Canada highway.

259. ## Math

Let AB and CD be two lines intersecting at point O. Let OP be the bisector of angle AOC, OT the bisector of angle POB, and OR the bisector of angle TOD. If angle POR = 25 degrees, find angle AOC and angle AOD.

260. ## literature

What is the plot summary of Edgar Allan Poe's "Cask of Amontillado"? With the introduction, rising action, climax,falling action and denouement. Thanks...

261. ## chemistry

How many liters of 0.250 M HCl would be required to react completely with 7.50 grams of magnesium hydroxide?

262. ## Math

Solve for x : 16y^2=120x-225

263. ## US History

What was the main purpose of Truman's speech a)to frighten the soviet gobernment b)to make clear how the United States would respond to Communist aggression c) to win congressional approval of the containment policy d)to expand the cold war

Is a fixed-price contract a good way to achieve the government’s goal of curbing rising costs? Explain

265. ## chemistry

If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?

266. ## Essay help :)

Here is my essay: All About The Greek Wars War is a devastating human activity, one that hurts populations, destroys property, and destroys political and social structures for places where humans live. The history of mankind has been a history of warfare

299. ## Chemistry

So I mixed 25 mL of 0.002 M KSCN and 25 mL of water in a beaker. The solution was clear with no precipitants. But then it says the ions present in KSCN are: so i put K+,S2- , CN- is that right?

300. ## physics

Two spheres A and B, where A has twice the mas of B, are projected at the same horizontal velocity off the edge of two different height shelves. Sphere A leaves from a height of 2.0 m. Sphere B leaves a shelf 1.0 m off the floor. If both spheres leave the

301. ## chemistry

divide eq 2 by 2: 2H(g)........> H2(g) delta H= -104.2Kcal H(g) ........> 1/2 H2(g) delta H= -72.1Kcal Now reverse the reaction: 1/2H2(g).......>H(g) delta H=+72.1Kcal subtract this eq from eq 1 1/2H(g)+1/2I2(g).....>HI(g) delta H=-1.1kcal

302. ## english

what does the mentioning of heavenly bodies, i.e. the sky, the air, etc., reflect in the "The Shawl" by Cynthia Ozick?

303. ## CHEMISTRY

A 2.800-g mineral sample was analyzed for its calcium carbonate, CaCO3, content by titrating it with hydrochloric acid (the reaction products are calcium chloride, carbon dioxide, and water). The sample required 28.48 mL of a 0.1505 M HCl solution to react

304. ## Physics

A train has a mass of 5.22 multiplied by 106 kg and is moving at 82.0 km/h. The engineer applies the brakes, resulting in a net backward force of 1.87 multiplied by 106 N on the train. The brakes are held on for 21.0 s.

whats the gcf of 16 and 42 why

306. ## Math

How much foil is required to cover a rectangular box that is 4 in by 8 in by 5 in?

307. ## math

there are 24 hours in a day and scientists tell us that we should sleep for 3/8 of the day.How much time should we spend sleeping?

308. ## physics

if the static coefficient of friction in the ice rink between the floor and the skater's shoes is .2, how much pushing force can he supply before his boots will begin to slide?(the skater's mass is 120kg)

309. ## physics

Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 52 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.

310. ## Algebra ?

When dN= 3 ; H = 4.6 ; Do = 70 ; Dn=38 ; L=77,8 Solve this : R= d + H Dn-Do -------------- 2L

311. ## science

what happens to a soccer ball underwater at a depth of 50 feet?

312. ## cosmetics science

Could you tell me,what is the specific mobile phase of lycopene when stationary phase is silica? Thank you.

313. ## physics

An aluminum wire of radius 3.10 10-4 m is stretched between the ends of 2 concrete blocks. When the system (wire and concrete) is at 35°C, the tension in the wire is 57.0 N. What is the tension in the wire when the system is heated to 185°C?

314. ## chemistry

A healthy adult exhales about 5.0*10 exponent 2 ml, of a gaseous mixture with each breath. calculate the number of molecules present in this volume at 37C and 1.1atm.

315. ## US History

Who did Truman promise to help? a)subjugated minorities b)armed resistance movemnts c)majorities whose freedom was threatened d)all of the above I think D

316. ## chemistry

3.49g of ammonia at STP weighs 4.48litre calculate molecular mass of it.