# Questions Asked onFebruary 7, 2012

1. ## chemistry

A scientist wants to make a solution of tribasic sodium phosphate,Na3PO4 , for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 ml of a solution that has a concentration of Na+ ions of 1.40M ?

2. ## Chemisty

When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: phosphorus (P4) (s) + chlorine (g)----> phosphorus trichloride (l)

3. ## Chemistry

Carbon dioxide gas has a solubility of 0.0972 g/100 g H2O at 40 degrees celsius. Expressed in parts per million, this concentration is closest to... (1)0.972 ppm (2)9.72 ppm (3)97.2 ppm (4)972 ppm

4. ## Physics

A man weighing 700 N lifts a 50.0 N object 2.0 m high. He uses a lever and with a force of 10.0 N. What is the resistance force

6. ## Trigonometry (Math)

A ladder 42 feet long is place so that it will reach a window 30 feet high (first building) on one side of a street; if it is turned over, its foot being held in position, it will reach a window 2o5 feet high (second building) on the other side of the

7. ## physics HELP MEEE SO CONFUSED

A spherical conductor has a radius of 14.0 cm and charge of 26.0 µC. Calculate the electric field and the electric potential (a) r = 10.0 cm, (b) r = 20.0 cm, and (c) r = 14.0 cm from the center.

8. ## college physic

Determine a formula for the change in surface area of a uniform solid sphere of radius r if its coefficient of linear expansion is alpha A (assume constant) and its temperature is changed by Delta T.Assume the temperature chan ge is not large, Delta T^2 ~

9. ## Physics

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball

10. ## physics

A 75 kg skydiver in free fall is subjected to a crosswind exerting a force of 60 N and to a vertical air resistance force of 100 N. Calculate the resultant force acting on the skydiver [6 marks] and his angle of fall (relative to vertical) [6 marks].

11. ## allgebra

A building is 1ft from an 11ft fence that surrounds the property. A worker wants to wash a awindow in the building 14ft from the ground. he plans to place the ladder over the fence so it rests against the building. He decides he should decides to place the

12. ## Physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle. (a) What must be the horizontal distance between

13. ## elements of design

1. Study the following sentence, then select the answer that best describes it. THE COW JUMPS OVER THE MOON! A. Italic serifed type B. Bold roman sans serif type C. Bold italic sans serif type(my answer) D. Bold roman serifed type 2. Which one of the

14. ## maths

Two athletes are pulling on a ring. One athlete pulls with a force of 150 N in a northerly direction. The second athlete pulls with a force of 200 N in a westerly direction. Calculate the magnitude [5 marks] and direction (relative to west) [5 marks] of

15. ## physics

A spherical conductor has a radius of 14.0 cm and charge of 26.0 µC. Calculate the electric field and the electric potential (a) r = 10.0 cm, (b) r = 20.0 cm, and (c) r = 14.0 cm from the center. how do i calculate k?

16. ## Chemistry

Determine the partial pressure of oxygen necessary to form an aqueous solution that is 7.7 x 10-4 M O2 at 25oC. The Henry's Law Constant for oxygen in water at 25oC is 1.3 x 10-3 M/atm

17. ## math

Julie is going to the mall. She has 15 coins in her pocket that nadd up to \$2.18. She has the same number of pennies as she does dimes. she has 5 more quarters than she has nickels. If she has 3 pennies, how many quarters, dimes and nickles does Julie

18. ## Algebra

A 10 foot ladder is to be placed against the side of a building. The base of the ladder must be placed at an angle of 72degree with the level ground for a secure footing. Find to the nearest inch, how far of the ladder should be from the side of the

19. ## Chemistry

Cyclopropane, C3H6, is converted to its isomer propylene, CH2=CHCH3, when heated. The rate law is first order in cyclopropane, and the rate constant is 6.0 10^-4 /s at 500°C. If the initial concentration of cyclopropane is 0.0238 mol/L, what is the

20. ## Finance

You currently have \$7,500 to invest. You can invest the full amount now for a periodof 9 years at which time you want to have \$15,000. Approximately what rate ofreturn is needed to accomplish this investment goal?

21. ## chemistry

Consider the reaction below: Cgraphite(s) + F2(g) +1/2O2(g) → CF2O(g) Which of the following is a correct rate expression? 1. rate = −2∆[O2]/∆t 2. rate = −∆[CF2O]/∆t 3. rate =∆[F2]/∆t 4. rate = −∆[Cgraphite]/∆t 5. rate

22. ## Physics

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge H = 231 m below. If the plane is traveling horizontally with a speed of 227 km/h (63.1 m/s), how far in advance of the recipients (horizontal distance) must the goods be

23. ## chemistry

How many grams of mercury are formed from 47.0 of HgO? How many grams of oxygen are formed from 47.0 of HgO? How many grams of HgO would you need to obtain 34.1 of O2?

24. ## Physics Correction

You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed vf. You now repeat the drop, but you have a friend on the street below throw another ball upward at speed vf exactly

25. ## college physic

Two identical thermometers made of pyrex glass contain,respectively identical volumes of mercury and methyl alcohol.If the expansion of the glass is taken into account,how many times greater is the distance between the degree marks on the methyl alcohol

26. ## algebra

If a rocket is launched with an initial velocity of 1600 feet per second when will the rocket be 14400 feet high?

27. ## chemistry

A student mixed 75.0 mL of water containing 0.75 mol HCl at 25�C with 75.0 mL of water containing 0.75 mol of NaOH at 25�C in a foam cup calorimeter. The temperature of the resulting solution increased to 35�C. How much heat in kilojoules was

28. ## math

DAN WAS WALKING FROM ONE END OF THE MALL TO THE OTHER END. HE TOOK THE FOLLOWING MEASUREMENTS OF FIVE STOREFRONTS: 23 FEET 11 INCHES, 25 FEET 2 INCHES, 18 FEET 3 INCHES, 28 FEET 8 INCHES, AND 32 FEET 4 INCHES.IF DAN ADDED ALL THE MEASUREMENTS, WHAT WOULD

29. ## Finance

keenan corp. is comparing two different capital structure. plan 1: would result in 7000 shares of stock and \$160,000 in debt. plan 2: would result in 5000 shares of stock and \$24,000 in debt. the interest rate on the debt is 10 percent. Q: (a)ignoring

30. ## Trigonometry

If A + B + C = 180° prove that Sin2A + sin2B – sin2C = 4cosAcosBsinC

31. ## Chemisty

Calculate the number of milliliters of 0.738 M NaOH required to precipitate all of the Mg2+ ions in 148 mL of 0.541 M MgSO4 solution as Mg(OH)2. The equation for the reaction is: MgSO4(aq) + 2 NaOH(aq) Mg(OH)2(s) + Na2SO4(aq) _____________mL NaOH

32. ## Algebra

The volume in cubic feet of a Cd holder can be expressed as V(x)=-x^3-x^2+6x, the depth is 2-x , factor the polynomial to find linear expression for the height and the width. - Do I just factor the -x^3-x^2+6x? It because I know the volume is LWH, so don't

33. ## physics

Waves on a particular string travel with a speed of 17 m/s. By what factor should the tension in this string be changed to produce waves with a speed of 102 m/s

34. ## AP CHEMISTRY

A mixture of H2, S, and H2S is held in a 1.0-L vessel at 90°C and reacts according to the equation H2(g) + S(s) H2S(g). At equilibrium the mixture contains 0.46 g of H2S and 0.40 g H2. (a) Write the equilibrium-constant expression for this reaction (Kc).

35. ## Microbiology

You have a broth that contains 2.7x10^7 cfu/ml/ How many colonies would you expect to count on a plate if you spread our: a. 1.0ml? b. 0.1ml?

36. ## Math

Mrs. Klein made some tarts. She sold three fifths of them in the morning and one fourth the remainder in the afternoon. If she sold 200 more tarts in the morning than in the afternoon how many tarts did she make?

37. ## chemistry

What mass of oxygen is needed for the complete combustion of 2.50×10−3 of methane?

38. ## ECON

The demand curve for haircuts at Terry’s Hair Design is P=20-0.20Q Where Q is the number of cuts per week and P is the price of a haircut. Terry is considering raising her price above the current price of \$15.00. Terry is unwilling to raise price if the

39. ## Math

Some of Helen's plants need water every day, some need water every other day, and others need water every third day. If she waters them all today, how many days will it be before she waters them all again?

40. ## Chemistry

1.29g H2 is allowed to react with 10.3g N2 , producing 1.86g NH3. What is the theoretical yield for this reaction under the given conditions? What is the percent yield for this reaction under the given conditions? I have been stucks for days now.

41. ## rome

When the plebeians demanded an assembly, what did the Senate do to satisfy their demands and how did it turn out for Rome? Can you please help me?????

42. ## physics

How much heat is required in order to change 5 g of ice at -15 degree to steam at 150 degree?

43. ## Physics

An enemy ship is on the western side of a mountain island. The enemy ship can maneuver to within 2520 m of the 1850 m high mountain peak and can shoot projectiles with an initial speed of 260 m/s. If the eastern shoreline is horizontally 305 m from the

44. ## Calculus

A block of ice is exposed to heat in such a way that the block maintains a similar shape as it metls. The block of ice is initially 2' wide, 2 'high, and 3' long. If the change in the width of the ice is -1/3 ft/hr, find: the amount of time it will tak

45. ## chemistry

what is the percent of recovery if you begin with 0.421 grams of copper and recover 0.325 grams?

46. ## chemistry

What mass of water is produced from the complete combustion of 2.50×10−3 of methane?

47. ## chemistry

if we combust 4.23 x 10^24 molecules of propane how many grams of carbon dioxide and water you will produce ?

48. ## chemistry

If 6.57 g of iron are reacted with an excess of hydrochloric acid, HCI, then hydrogen gas and14.63 g of iron (III) chloride are obtained. calculate the theoretical yeild and percent of yeild of FeCl3.

49. ## Trigonometry

Expressed in simplest form, (n-1/n)/(1+1/n) is equivalent to... 1.)n-1 2.)n+1 3.)n-1/n+1 4.)n

50. ## maths

At the beginning of a race, a yacht crosses the start line and sails in westerly direction at a speed of 4 m s-1. The current of the sea is flowing at 2 m s-1 towards the north-east. Calculate how far [8 marks] and in what direction (relative to west) [8

51. ## fin

You are able to deposit \$850 into a bank CD today and you will only withdraw the money once the balance is \$1,000. If the bank pays 5 percent interest, how long will it take you to attain your goal?

52. ## Physics

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

53. ## Physics

. A rock thrown horizontally at a large bell 57.0 m away is heard to hit the bell 4.10 s later. If the speed of sound is 330 m/s, what was the speed (in meters/second) of the rock? (Disregard gravity.)

54. ## General Chemistry

What is the molality of KBr in a solution made by dissolving 2.21 g of KBr in 897g of water

55. ## physics

A hunter at a distance dx from a coconut tree points the nuzzle of his gun directly at a monkey sitting on the tree at a height dy. The monkey sees the hunters and drops vertically from the tree at the very instant of firing. Will it be hit by the bullet?

56. ## science

Danny sails a boat downstream. The wind pushes the boat along at 21 km/hr. The current runs downstream at 15 km/hr. What is the actual velocity of the boat

57. ## CALC 2A

True or False. If f is continuous at 5 and f(5)=2 and f(4)=3, the the lim x-> 2 f(4x^2-11) = 2 the answer is true, but i do not understand why..because when i plug the numbers in im not getting what it has stated. Please explain thanks:)

58. ## Chemistry

At what tempature will .0100 moles of argon gas have a volume of 275mL at 100 kPa? please this is due tommorrow really need som help

59. ## Physics!

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

61. ## Chemisty

How many GRAMS of sulfur are present in 1.53 moles of sulfur dichloride ? grams. 2. How many MOLES of chlorine are present in 3.61 grams of sulfur dichloride ? moles.

62. ## physics

a soccer ball is kicked from the ground with an initial speed of 19.5 meter per second at upward of 45 degrees. a player 55 meter away in the direction of the kick starts running to meet the ball at the instant. what must be his average speed if he is

63. ## math

find the exponential function of the form y=ab^x whose graph passes through the points (4,6) and (7,10) i got a=3.04 and b= 1.185 so my equation is y=3.04(1.185)^4 is this correct? one more problem. find a power function of the form y=ax^b whose graph

64. ## Chemistry

20.7mL of ethanol (density=0.789g/mL) initially at 8.2 degrees Celsius is mixed with 37.1 mL of water (density=1.0g/mL) initially at 25.7 degrees Celsius in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?

65. ## Physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle. Please Show work!! I am completely lost!

66. ## PHYSICS!

Given: G = 6.67259 × 10−11 Nm2/kg2 The acceleration of gravity on the surface of a planet of radius R = 3430 km is 4.43 m/s2.What is the period T of a satellite in circular orbit h = 7683.2 km above the surface? Answer in units of s

67. ## algebra

Amistad starts selling tickets to basketball games. They sell 292 tickets to the last game of the season. An adult ticket costs \$3. A student ticket costs \$1. They collect \$470.00 in ticket sales. Write and solve a system of equations to find the number of

68. ## chemistry

What mass of carbon dioxide is produced from the complete combustion of 2.50×10−3 of methane?

69. ## mth174

A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you enter your answer in scientific notation, round the decimal value to two decimal places. Use equivalent rounding if you do not

70. ## arithmetic

the sum of the 3rd and the 4th term is 44 and the sum of the 10th and the 15th term is 203. what is the sum up to the 20th term?

71. ## Physics

The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with acceleration −5.15 m/s2 for 4.20 s, making skid marks 62.1 m long that end at the tree. With what speed does the truck then strike the

72. ## Physics

You are driving south on a highway at 24.0 m/s (approximately 54 mi/h) in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 26.6° to the horizontal.

73. ## Math(Algebra)

How would you set this problem up and work it: The difference between two numbers is 16. Three times the larger number is seven times the smaller. What are the numbers? This one also: The differnce between two numbers is 18. The sum of twice the smaller

74. ## chemistry

to produce 4.00 mole if c6h12 from the following how many grams of c6h6 must you combine 78.12 g/mol c6h6 + 2.02 g/mol h2 = 84.18 g/mol c6h12

75. ## Physics

Given: G = 6.67259 × 10−11 Nm2/kg2 . A 602 kg geosynchronous satellite or- bits a planet similar to Earth at a radius 1.98 × 105 km from the planet’s center. Its angular speed at this radius is the same as the rotational speed of the Earth, and so

76. ## Physics

An athlete swings a 3.46 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.55 m at an angular speed of 0.35 rev/s. What is the tangential speed of the ball?

77. ## geometry

A regular hexagon has side lengths 15 in. The perimeter of the hexagon is 90 in. A second hexagon has side lengths 18.75 in. Find the perimeter of the second hexagon. Round to the nearest tenth.

78. ## Math

A juice concentrate containing 65% solids is added to a single-strength juice solution(containing 15% solid), in order to generate a final product which contains 45% solids. Calculate the amounts required for the concentrate and for the single strength

79. ## math

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

80. ## ECON

. Movie attendance dropped 8 percent as ticket prices rose a little more than 5 percent. What is the price elasticity of demand for movie tickets? Could price elasticity be somewhat overestimated form these figures? That is, could other things have

81. ## math

a rope 60m long and 5cm in diameter is coiled tightly. Estimate, correct to one significant figure, the radius of the 'circle' formed. ( please could we have working out).

82. ## math - integers

4. The temperature is falling 3 degrees per hour. How many degrees has it fallen altogether from 12 noon to 12 midnight?

83. ## english112

In the essay by Derek Bok "Protecting Freedom of Expression on Campus" does this thesis sound like it would work with the essay? Inappropriateness causes dissonance with each other.

84. ## physics

A 20 g sample of aluminum at 85 degree is dropped in 500g of water. The resulting temperature of aluminum and water is 25 degree. What is the initial temperature of water?

85. ## geometry

the points K and M are points of tangency. Find the value of x. 4x+7=7x-8

86. ## Physics!

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

87. ## 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

88. ## physical

a copper calorimeter of mass 150g was half filled with water of 300g and temperature 0c. 5g of ice at oc was added to the content, later some quantity of steel was passed into the mixture and temperature by 20c. calculate the quantities of steel added if

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

90. ## Chemistry

The vapor pressure of the liquid HF is measured at different temperatures. The following vapor pressure data are obtained. Temperature(K) Pressure mmHg 250 129.63 260 206.65 270 318.22 280 475.16 Determine the enthalpy of vaporization. I have know idea how

91. ## statistics

FB: Attendance at a university's basketball games follows a Normal distribution with mean ì = 8,000 and standard deviation ó = 1,000. 60% of all games will have more than _______ people in attendance.

92. ## math

A corporation borrowed \$124,000 cash by signing a 5-year, 10% installment note requiring equal annual payments each December 31 of \$32,711. What journal entry would the issuer record for the first payment?

93. ## chemistry

Calculate the energy in joules and calories required to heat 34.0 copper (Cu) from 142 to 256

94. ## math 7

what is 3/7th of 490

95. ## chemistry

Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O(`) −! 2HNO3(`) + NO(g) If 745 L of NO2 gas react with water, what volume of NO gas will be produced? As- sume the gases are measured under the same

96. ## Math

How long did Michelle sleep if she went to bed at 9:40 PM and got up at 7:20 AM.

97. ## Physics

A 0.105 kg meter stick is supported at its 40 cm mark by a string attached to the ceiling. A 0.77 kg object hangs vertically from the 6.33 cm mark. A second mass is attached at another mark to keep it horizontal and in rotational and translational

98. ## Finite Math

Sinking fund which the goal of \$100,000 to reach with n=22, i= 0. 03

99. ## algebra

Quadratic equations can be solved by graphing,using the quadratic formula, completing the square, and factoring. What are the pros and cons of the methods. when would each be appropriate?

100. ## rome

Why do you think the legacy of Roman Law is so important?

101. ## Trigonometry

If A + B + C = 180° prove that cos2A + cos2B – cos2C = -1 -4cosAcosBcosC

Barney Casey borrowed \$40,000 from his parents for 2 years. He paid them a total of \$45,000 at the end of the 2-year term of the simple interest loan. What rate of interest did he pay his parents?

103. ## physics

What is the velocity in meters per second of a sailboat that travels 150 m away from the shore in 17 seconds?

104. ## Algebra 1

Use the power of a product property to simplify the expression. (2)^3 I'm not sure whether you would just have it be 2^3 or just plain old 8. Any help would be appreciated, please.

105. ## algebra

The sum of three consecutive integers is -96. What is the largest integer?

106. ## geometry

Square is the product of a number multiplied with that number itself.square of a number is its second power . 1 multiplied 1 = 1 raised 2 = 1 , 2 multiplied 2 = 2raised2=4 , 3 multiplied 3 =3raised2 =9 , 4 multiplied4 =4raised2 = 16 . Find the other 96

107. ## college mathematics

8. Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion. Show complete work. I.) If the dog wags its tail, then the dog is not calm. II.) Either the dog does not wag its tail or the dog is not calm. III.) If

108. ## Phyics

Given: G = 6.67259 × 10−11 Nm2/kg2 The acceleration of gravity on the surface of a planet of radius R = 3430 km is 4.43 m/s2.What is the period T of a satellite in circular orbit h = 7683.2 km above the surface? Answer in units of s

109. ## Physics

A model rocket is launched straight upward with an initial speed of 58.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 120 m. (a) What can you say about the motion of the rocket after its

110. ## English

1. Because she felt cold, Susan put on her coat. 2. Because Susan felt cold, she put on her coat. 3. Feeling cold, Susan put on her coat. (Which one is correct? Are all acceptable and the same?)

111. ## Math

I need help on pizzazz worksheet d40 #10!!!! I need help now

112. ## math

It takes approximately 15 minutes to code one record. How many personnel hours would be needed to code 1,424 discharges for the month?

113. ## chemistry

A sample of potassium chlorate us heated and decomposes to produce 229mL O2 gas, which was collected over water at 20 Celsius at a total pressure of 754 Torr. What is the partial pressure of O2 gas, if the partial pressure of water at 20 Celsius is 17 Torr

114. ## Trigonometry

Which expression is equal to (6x^3+10x^2-4x+10)/(3x-1)? 1.) 2x^2+4x+10+(10/3x-1) 2.) 2x^2+4x+(10/3x-1) 3.) (2x^2)+(8/3x)-(20/9)+(110/27x-9) 4.) 2x^2-4x-10+(10/3x-1)

115. ## algebra

Assume you work at a company where you are paid hourly. You are paid \$8.60 per hour for regular time (less than or equal to forty hours) and time and a half for overtime hours up to fifty hours in one week. If you are asked to work fifty or more hours in

116. ## physics

A MASS OF A MINUBUS WITH THE DRIVER IS 1 500Kg .ASSUME THAT THE PASSENGERS HAV AN AVERAGE MASS OF 50Kg EACH .THE DRIVER IS MOVING AT A SPEED OF 30m.s WHE HE NOTICES THAT THE TRAFFIC LIGHTS AHEAD TURNED TO RED .HE APPLIES A FORCE OF 9 000N ON THE BREAK

117. ## physics

A cyclist is riding in the positive horizontal direction at 14.8 m/s on a horizontal level surface. He encounters an air resistance force of 50 N. The actions on the pedals by the cyclist cause a backward force of 73 N to be exerted by the rear wheel on

118. ## geometry

If triangle has vertices A(7,-3), B(-1,5), and C(4,-8), what is the length, in simplest radical form, of the median from C to AB?

119. ## chemistry

The freezing-point depression is -0.930 Celsius degree. Determine the molality of the solution of an unknown nonelectrolyte in water. Please help!! I do not understand this problem!

120. ## chem (significant figures)

what are the errors in the measured values g=9.910 m/s^2 amd 9.805? true value 9.797 for 9.910 i got 0.113 and for 9.805 i got 0.008. i know i need for significant figures but i got three in my answer. so what do i do?

121. ## Chemistry

The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at

122. ## English

I urgenlty need you to check these sentences, too. I need to be extremely convincing but also determined. 1) We also agreed to use English as lingua franca during the preliminary meeting we held at our school with our school principals. 2) On that occasion

123. ## Science

What can you conclude about Gregor Mendel? A. The Catholic Church forced him to stop his experiments B. He was one of the first researchers to establish how heredity worked C. He concluded that heredity worked for people as well as plants D. He established

124. ## algebra

Ky has 3 times more books than Grant, and Grant has 6 fewer books than Jaime. If the total combined number of books is 176, how many books does Jaime have?

125. ## chem

barium nitrate and sodium sulfate combine to create: write the balanced equation

126. ## AP Chemistry

In the titration of 77.5 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.38 M HCl, calculate the pH under the following conditions. (a) after 50.0 mL of 0.38 M HCl has been added (b) at the stoichiometric point

127. ## english

because reverend hale and parris pressured tituba to confess about the devil, then

128. ## math

If every 6th customer gets a coupon for free fruit snacks and every 9th customer gets a coupon for free fruit juice which customer will be the first to get both free fruit and free juice?

129. ## Physics!

An electron orbits a 3.0 cm diameter metal ball 5.0 mm above the surface. The orbital period of the electron is l2.0 micro seconds. What is the charge on the metal ball? I think I use E=kq/r*R but im unsure! Please help! Thanks

ideas stated in text you are sometimes alike in several ways. to generalize, you use the individual ideas to make a general statement about them. look for clue words, such as most,many,all,or few. directions read the following passage. then answer the

131. ## Chemistry

The density of liquid "A" is 1.80gm/ml, liquid "B" is 1.10 gm/ml and liquid "C" is 1.40 gm/ml. If theses liquids are immiscible in each other and a piece of solid with a specific gravity of 0.80 is placed in a container of all these liquids, what will

132. ## algebra

A box of animal crackers measures 12 inches by 8 inches by 2 inches. What is the volume of the box?

133. ## english

A man in your community received a postcard yesterday from his father, who lived in a nearby town and had just returned from a trip. “Please come over so your mother and I can show you pictures of our trip,” the postcard said. “I guess my father

134. ## Calculus

uu) lim ln(1-x) as x->1- yy) lim (√(6-x)-2)/(√(3-x)-1) as x-> 2 zz) lim (1-(1/2)arctanx) as x->-∞ bbb) lim ln|1-x| as x->1 If these are hard to interpret with all the parentheses, you can plug them in to Wolfram Alpha and it interprets them

135. ## math - integers

2. One Saturday morning, Liza jogged 15 blocks from her house and then decided to go back 5 blocks by the same road. How many blocks away is she from her house?

136. ## math

lizette wants to read more books. her goal is to read at least 2 books each month. let m represent the number of books she will read in a year. use m >= 24 to graph the number of books she plans to read on a number line

137. ## Chemistry

The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at

Before writing a recommendation report to the CEO, Dee and Carlos distribute a survey to everyone in their company to determine which new benefits employees are most interested in what part of the writing process does this activity represent? A. Writing B.

Profits last year was exorbitant

140. ## chemistry

A sample of Nitrogen is collected over water at 26 Celsius. What is the partial pressure of nitrogen if the total pressure is 99.4 kPa and the partial pressure of water vapor at 26 Celsius is 25 torr

141. ## phyhsical science

how much time is needed for a car to accelerate from 6.5 m/s to a speed of 22 m/s if the acceleration is 3.0 m/s/s?

142. ## math

The team won 16 of its 28 games. What was the team’s won-lost ratio?

143. ## Physics

A projectile is fired in such a way that its horizontal range is equal to 2.6 times its maximum height, what is the angle of projection? I know a similar question was asked, but I didn't understand the solution.

144. ## CDA

I need to find 5 children's books that support dev. of gender identity by portraying males and females in diverse roles.

145. ## MATHS

fIND THE VALUE OF THETA,given that theta is greater than zero but less than 360 degrees,given that sec(3theta/2 - 48 degrees)+ 2 = 0

146. ## English

Could you check these sentences, please? Thank you for helping me! 1) Here is the translation I did on the presentation of the school as received (in Italian) from..... I'm attaching it to this email together with the things he still has to complete. 2) He

147. ## physics

A force of 64 N is required to keep a model power boat moving at a constant speed through the water on a pond. How much work is done in moving the model power boat a distance of 25 m?

148. ## Social Studies

Who were considered the Big 4 at the treaty of Versailles? Some sites say US, Great Britain, France, and Italy. Others say US, Great Britain, France and Germany. Thanks...

149. ## english

That apple, glossy and red, rolled out of the grocery bag and across the smooth wooden table.

150. ## math

what order are these fractions from least to greatest 1/7,1/9,2/7,1/12 2 5/6,9/8,3 1/8,3 1/9 5/9,10/3,2 1/4,3/2 11/2,4 1/2,1/100,5 1/4

151. ## Trig

Help please! Thank you! If csc(theta)= -2 and theta lies in Quadrant III, find tan(theta).

152. ## Algebra 2

suppose you have 10 green marbles, 10 gold marbles, and ten black marbles. You also have 3 bags. Your plan is to ask a friend to randomly select a marble from one bag. How should you distribute all the marbles amongthe 3 bags to maximize the probability

153. ## math - integers

1. Freddy lives 34kms south of Makati City while Misael lives 34kms north of Makati City. How far is Freddy's place from Misael's place?

Matthew interviews the director of computing services to get information for the company newsletter. What part of the writing process does this activity represent? Writing Editing Revising Planning i think planning

155. ## history

In America, the main influence of the Enlightenment was expressed through A. family life. B. moral values. C. philosophies of religion. D. practical scientific experimentation.

156. ## MATHEMATICS_algebra

Find the speed of a train if an increase of 6kph lowers the time for a journey of 72 km by 10 minutes.

Ben chooses a pattern of organization before he begins a letter. What part of the writing process does this activity represent? Planning Writing Revising Editing i think c or a

158. ## Physics - Question

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.

159. ## Math

The weight of an object on the planet Mercury is about 2/5 the weight of that object on the Earth. An object that weighs 30 pounds on Earth would weigh how many pounds on Mercury?

160. ## Science

a ball is thrown upward at a speed of 12 m/s. It will reach the top of its path in about: a) 0.6 sec b) 1.2 sec c) 1.8 sec d) 2.4 sec Please explain how you find the answer!!! I cannot figure it out

161. ## math

please explain: sam invested part of his \$25,000 bonus in a fund that paid 8% profit and invested the rest in stock that suffered a 3% loss. Find the amount in each investment if his overall net profit was \$1230.

162. ## physics

How deep can a snorkel diver dive if the maximum gauge pressure on the thorax cannot exceed 10.9 kPa? Hint: density of seawater = 1.015g/cm3

liam is planting 30 bean plants and 45 pea plants in his garden. If he puts the same number of plants in each row and if each row has only one type of plant, what is the greatest number of plants he put in one row?

164. ## algebra

Evaluate the function f(x) = 9x - 6 for x=0.

165. ## Chemistry

write the balanced chemical equation for the reaction elemental pentatomic thulium atoms, Tm5 , and elemental pentatomic astatine atoms, At5 , to produce thulium astatide, Tm9At13

166. ## algebra

The sum of three consecutive integers is . What is the largest integer?

167. ## Chemistry

A student heats 9.85 g of lead to a temperature of 92.3 C. He places the hot lead into a container of water, initially at a temperature of 23.7 C; the final temperature of the water and lead is 24.5 C. What quantity of heat was lost by the lead?

168. ## Physics

Compute the magnitude of the tangential acceleration, the radial acceleration, and the resultant acceleration of a point on its rim after it has turned through 38.2^\circ. Enter your answers separated with commas.

169. ## language

Write the verb in each sentence. Write whether the action is past, present, or future 1. A Potter adds sand to the clay (adds, present) 2. Then he rolls the clay into long, pipe-shaped pieces. (Pipe-shape, past) 3.Another potters will use a potter's wheel

170. ## calculus

If the line y=mx-5 does not meet the curve y=3x^2-6x+7 then value of m is in the open interval (a,b). Find the exact value of b.

171. ## Geometry (Logic)

Which argument is not valid? 1.) Given: a→b a Conclusion: b 2.) Given: a˅b ~b Conclusion: ~a 3.) Given: a→b ~b Conclusion: ~a 4.) Given: a→b b→~c Conclusion: a→~c

172. ## Calculus

How to rationalize this question? (√3 - √2)/(√3+√2) Do I multiply those two by(√3 - √2) or (√3 + √2)

173. ## Pre-Calc/Math

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

174. ## Grammaranum

what is the use of the pronoun... Q1. Is the town's oldest couple (they) or the Halberts? i think it's predicate nominative Q2. the coach gave (me) another chance to try out. it's subject of an infinitive Q3. late for a meeting, (he) quickly hailed a taxi.

175. ## human body

How is the integumentary system involved in the immune system?

176. ## science

How is temperature related to the average kinetic energy of molecules that make up a substance?

177. ## geometry problems (algebra)

the lengths of the triangle are consecutive odd integers, find the length of the shortest side if the perimeter is 19 units shorter than 4 times the lenghts of that side

178. ## Science

What is concluded about one of Mendel's short pea plants? A. It has one dominant and one recessive gene B. It has a pair of recessive genes C. It has a pair of dominant genes D. It has no recessive genes A?

179. ## logs

how would you use log which has a subscript of 2 5 to approximate log subscript 2 50 and log subscript 2 0.4?

180. ## Physics (due soon!)

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

181. ## math

y-3x=-3 3y-9x=-18

182. ## Math

if a polynomial function is of degree n, then the graph will have n-1 relative maximum and minimum points. Is this: Always True, Sometimes True, or Never True? It's really confusing me.

183. ## Social Studies

I need to find out 4 mistakes Germany made during WWI. I know one is unsrestricted submarine warfare. Another one would be the Zimmerman Note. A third one could be that they invaded Belgium. I can't think of a 4th mistake though.

184. ## college mathematics

9. Create a Euler diagram to determine whether the syllogism is valid or invalid. All children like games. John likes games. John is a child.,

185. ## algebra

how soon Sally will get to the mall if she peddles her bike 5 mph for 5 minutes and rides her scooter for 6 minutes at 6 miles an hour!!!!

186. ## math

You are taking your friend to lunch and have exactly 15 dollars to spend. You want to leave a 15% tip. What is the maximum amount of money you could spend?

187. ## Math

The weight of an object on the planet Mercury is about 2/5 the weight of that object on the Earth. An object that weighs 30 pounds on Earth would weigh how many pounds on Mercury? Need solution because I think it is 7.5 but my parents think the answer is

188. ## geometry

in triangle abc angle a is (3x+40) angle b is (8x+35) and c is 10x what is the longest side of the triangle

189. ## science

What is the effect of increasing the temperature of a body?

190. ## Calculus

Simplify difference quotients. 1/(1+h)-1/h I got 1-1-h/h but the answer is -1/(1+h)

191. ## physics

A smooth stone is dropped from a bridge strikes the water after 5second.Calculate the height of the bridge above the surface of the water

192. ## English

could someone tell me an awesome thesis on the Prohibition era (cause and effect)for a paper

193. ## calculus

How much work is needed to extend a 20 foot fence so that one end touches the ground. The fence as a linear mass density of (.4x - .02x^2) lb./ft.

how do carrier proteins recognize substances to transport in active transport?

Kristen analyzes her audience to determine how much background? Kristen analyzes her audience to determine how much background information they will need in order to understand the main point of her message. What part of the writing process does this

196. ## History

What caused Republicans to abandon their defense of black rights? Discuss economics as well as political reasoons.

197. ## ENGLISH

I have a term paper and its on the Prohibition era, and i want to know if this thesis is the best, and if not,could you help reform it? thesis: Prohibition of alcohol in the United States during the 1900's was enacted to reduce crime, have a healthy

what is the gravitational potential energy of a 0.1 kg apple sitting on a 12.5 m flagpole?

199. ## maths

Evaluate limit squareroot of (x^4 - 16)/(x^3 - 8) as x approaches 2

200. ## MATHEMATICS_algebra

A rectangular brass sleeve has a square base of side (x) cm and height (h) cm, its weight (w) kg is given by a formula w= (3x^2h)/10. How is w changed if x is trebled and h is halved?

201. ## math

ms.Sue, where did you get 2:20?

202. ## algebra

a trip of 120 miles required 7 gallons of gas. at this rate how many gallons would be needed at 180?

203. ## math

If there are 16 teams, how many players will there be. Explain how you got your answer.

204. ## economics

what is the theory of inflation

205. ## Algebra; URGENT

How can you tell the difference between a vertical strecth and a vertical shrink?

206. ## college mathematics

5. Given p is false, q is true, and r is false, find the truth value of the statement (~p~q)-->~r. Show step by step work.

207. ## language

Underline the present-tense verb. Tell whether it is singular or plural. 1. A craftsperson uses small shells or pieces of large shells. (uses ,singular) 2. most people glue the shells into the frame. (frame, plural) 3. Then they place it on a flat surface.

208. ## computer

· What did you learn from this course that is new and helpful to you? How will you use that information in the future? What useful advice could you provide someone based on what you have learned?

209. ## English

Rewrite each sentence below, replacing all clichés with more creative or straightforward expressions. The tried and true methods quite often can't be beat.

210. ## physics help!!!

How do you find the speed of sound wave using the formula for speed when you have 195 Hz 89.4m in 0.311s. Help what formula to use what's the answer???

211. ## International Finance

Suppose that the current Bid-Offer on the Yen is \$0.0089/¥ and \$0.0091/¥, and the three-month forward is \$0.0094/¥. 1. If you wish to hedge 10,000,000 Yen Obligation due in three months, what position would you take? Explain why. a. Buy Yen forward at

212. ## Alg 2

Find the lcd 14/4(x+1) , 7/4x I don't get it can you please explain step by step?

213. ## science

What do scientists mean when they say that action equals reaction?

214. ## Math Challenge

A three-digit number increases by 9 if we exchange the second and third digits. The same three-digit number increases by 90 if we exchange the first and second digits. By how much will the value increase if we exchange the first and third digits?

215. ## English

Thank you very, very much for helping me! I still have to mention a few things to connect the description of the school to the need of promoting the study of English and IT. I hope you can help me express them. 1) I also wanted to say that students from

The word sympathy means A.time B.respect C.interest D.understanding D?

217. ## math

explain how you can use a grid to subtract 1.65 - 0.98

218. ## math

The HIM department listed the following LOS data for the longest admissions for the month of September. If patient A's LOS was 66, what is that percentile? 43, 45, 54, 55, 59, 60, 62, 64, 66, 67, 67, 68, 68, 69, 70, 70, 71, 72, 74, 75

219. ## math - integers

3. Arlan and Bryan started driving from the same place. Arlan drove at an average speed of 55 kph, Bryan drove at an average speed of 65 kph. How far apart were the after 2 hours?

220. ## math - integers

5. Robert, a real estate agent, drove 170 kms north from his home. The following day, he drove 54 kilometers south. How far and in what direction did he have to drive to get back home?

221. ## Math

fabric that is 56 1/4 cut into 3 3/4

222. ## Chemistry

ln 555.6/281.1 = -deltaH vap/8.314J/k mol [1/256.1K - 1/242K]. I have to solve for delta Hvap. I know that the left side would be7.21. I am not sure what step to do next.

223. ## math

MS. Sue can you explain me the problem please

224. ## Science

What is concluded about one of Mendel's short pea plants? A.It had one dominant and one recessive gene B.It had a pair of recessive genes C.It had a pair of dominant genes D.It had no recessive genes B?

225. ## physics

a speaker at a concert generates 1 x 10^-2 w/m^2 at a distance of 20m form the speaker at a frequency of 1kHz 1) calculate the wavelength of the waves emitted. b) what is the intensity level at 20m

226. ## Physics/Chemistry

The following combinations of quantam numbers are not allowerd 1. n=3 l=0 m=-1 2. n=4 l=4 m=0 Can someone explain to me why the second one is not allowed. Also check my explaination for the first one. If L=0 then m also has to also =0 The s subshell (ℓ =

227. ## Math

How does doubling the measure of each dimension in a rectangular prism change the volume of the prism?

228. ## math

The cost of a X chocolate bar is \$3.50. The cost of a similar Y bar is \$3.20. (a) Find the percentage saving in buying a Y bar instead of the X bar. (b) Find the percentage loss in buying a X bar instead of the Y bar. Please help...........

229. ## English

I urgently need you to check these sentences. 1) Our German partner wrote that students can communicate in one of the European languages of their partners. I'm really disappointed by his words and I need to reply to this. 2) Among the linguistic objectives

230. ## SDSU

I need help solving Integral from 0 to (a/sqrt(b)) of (a^2-bx^2)^(3/2) I got (a^4/8sqrt(b)) - 3a^4pi/4sqrt(b)

231. ## geometry

how to defin 130 dagree angel

asked by how to draw 130dagree angal
232. ## general science

a train goes forward at a speed of 1 m/s for 20 seconds. then it stops and goes backward at a speed of 0.5 m/s for 4 seconds. after both movements are completed, how far is the train located from its starting point.

233. ## physics

When a 1150 kg space rocket lifts off of ground. How many joules of energy has been provided by its engine during the time in which it achieves a speed of 180 m/s.

234. ## ms. sue

ms. sue u be able to make my answer more long? i not know what more to add to make it paragraph lengthy.

235. ## English

What is the book "The Great Gatsby" about?

236. ## Virtue Ethics-College Level

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

237. ## earth

At what height above the earth surface will an austranouts experience only half the gravitation that he experience on earth

238. ## Mathematics

Anthony uses 1.2 metres of leather and one buckle when he makes a leather belt. He can make 15 belts per hour and he values his labour \$11 per hour. Anthony buys his supplies in bulk. The leather comes in rolls 50 metres long at a cost of \$180 per roll and

239. ## algebra

please check answers and change if wrong thank you. The absolute value of 3 times a number x is greater than 33. |3x| > 33 3x > 33 x > 11 what about -11

240. ## physics

A smooth stone is dropped from a bridge strikes the water after 5second.Calculate the height of the bridge above the surface of the water

241. ## Trigonometry (Math)

From the top of a building 70 ft. high, two objects in a straight line from the building are observed at angles of depression of 28° and 41°6' respectively. Find the distance between the two objects. -Complete Solution please. :'(

242. ## algebra

Cedric cashed a \$125 check at the bank. The teller gave Cedric his money in \$5 and \$10 bills only. If the teller gave Cedric twice as many \$10 bills as \$5 bills, how many of each type did cedric receive?

243. ## algebra

please check and correct thanks Problem: solve and check the inequality if possible |4F+8|< 12 positive: negative: |4F+8| < 12 |4F + 8| < -12 4F + 8 -8 < 12 - 8 4F +8-8 < -12-8 4F < 4 4F< -20 F < 1 F< -5 solutions 1 and -5 or -5 < F < 1 check positive ck

the stomach uses two kinds of tissue to carry out diffusion. true or false

245. ## algebra

how would you graph y=x^2(-3 is less than or equal to x is less then or ewqual to3)

246. ## algebra

how to find the unknown quantity when you have only p r t no i is known

247. ## college mathematics

3. Fill in the heading of the following truth table using any of p, q, ~, -->, , V, and ^. p q T T T T F F F T F F F T

248. ## college mathematics

4. Construct a truth table for q (p^ ~q). Be sure to include all intermediate steps in your table.

249. ## college mathematics

10. If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented. If I sing in the shower, then I will not be overheard while singing. I was not overheard while

250. ## college mathematics

2.) Construct a truth table for (p^~q)-->q.

251. ## biology

which leukocyte is predominant in the blood smear? explain by comparing it with other leukocytes ad red blood cells in the blood smear

252. ## tusd

last year, the sports athelitic club charges 20.00 per class. 70 people attended. The club wants to increase the class price. the club expects to lose one customer for each \$1.00 increase. a. what should the new price be to maximize the income? b. what is

253. ## Chemisty

How many GRAMS of chromium(II) nitrite are present in 1.72 moles of this compound ? grams. 2. How many MOLES of chromium(II) nitrite are present in 1.46 grams of this compound ? moles.

254. ## medical billing and coding

In which of the following procedures might a catheter be placed in the heart preoperatively to monitor hemodynamic status? a.pericardiocentesis b.swann-ganz placement c.transeophageal echocardiography d.right-heart catheterization

255. ## physics

a dog escapes from his front yard a 3:15pm and is discovered 3.5 miles from home at 4:50pm. What is the dog's average speed in mph. how do you solve this i am lost

256. ## English

I just wanted to add a few more things. I urgently need to express them. 1) We keep emailing each other (two people involved) in English because we both agreed to use English as the lingua franca. 2) Therefore, we must vary the application module;

257. ## Science

Which of the following is inherited? A. The shape of your blood cells B. Your intelligence C. Your personality D. Your weight A?

258. ## Social Studies

Which was the last of the Ivy League schools to admit women? Princeton?

259. ## paper

how would I do an in text citation for this reference? 1. Shinji Fukuda, Hidehiro Toh, Koji Hase, Kenshiro Oshima, Yumiko Nakanishi, Kazutoshi Yoshimura,Toru Tobe, Julie M. Clarke, David L. Topping, Tohru Suzuki, Todd D. Taylor, Kikuji Itoh, Jun Kikuchi,

260. ## Trigonometry

Solve for x,assuming x≠0:(-2/5)+(x+4/x)=1

261. ## AP Chemistry

Consider 67.0 mL of a solution of weak acid HA (Ka = 1.00 10-6), which has a pH of 4.500. What volume of water must be added to make the pH = 5.000?

262. ## Science

Hi , I am doing a written science assessment on burning magnesium metal - one of the questions we had to answer was:explain the reaction using the big idea of energy . Would you have any clue what that means ? Thanks x

263. ## 7th math

7x(x+4).... (b+11)2b...

264. ## chemistry

what is the mass in grams of 0.0850 mol of hydrogen atoms?

265. ## Public Health

A screening test was used to identify carriers for a gene causing prostate cancer. Discuss the social, legal, and moral implications of using the results of the test.

266. ## math

Is the number 82 the sum of the digit 100?

267. ## MATHEMATICS_motion

Find the speed of a train if an increase of 6kph lowers the time for a journey of 72 km by 10 minutes.

268. ## Math

What is 11twefths of 24

269. ## 7th math

can you help me with this..../ 8(x-5) -3(w+4)

270. ## math

simplify each rate into unit rate \$1.20 for 5 minutes

271. ## Math

Ming has 13 rocks. He puts them into 2 equal groups with some left over. How many rocks are in each group?

272. ## Math

what are the next 3 numbers after -1,+4,-9,+16

a = 19 and m

274. ## math

1/2t-1/6(4-10)