# Questions Asked onNovember 9, 2014

1. ## Chemistry

Using the following data 1. CU3+ + 2e- ---> Cu+ E1= 1.28V 2. CU2+ + e- ---> Cu+ E2= 0.15V 3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V 3. Cu+ + e- ----> Cu (s) E4= 0.52V calculate the standard reduction potential for the reaction of Cu(III) to Cu(II). Is it .783 V?

2. ## calculus

An observer is 20 m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 20 m horizontally from the observer (see figure). The angle of elevation of the elevator is the angle that the observer's line of sight

3. ## physics

A child is standing on a platform of a station. A train travelling at 30m/s takes 3.0 secs to pass the child.What is the length of the train. a)10m-this was my answer b)27m c)30m d)90m

4. ## Physics

A 4 kg mass and a 9 kg mass are being held at rest against a compressed spring on a frictionless surface. When the masses are released, the 4 kg mass moves to the east with a speed of 2m/s. What is the velocity of the 9 kg after the are released?

5. ## english 4

Change the italicized clause to a nominative absolute. Rewrite the entire sentence in the box below. As the hurricane season was over, people returned to the cottages on the beach. Change the italicized clause to a nominative absolute. Rewrite the entire

6. ## Physics

Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. What is the total momentum of the system? (should I

7. ## economics

In which of the following situations would the price of a good be most likely to increase? An increase in production costs results from a rise in wages. A rise in demand happens too quickly for producers to increase production to keep up. A breakthrough in

8. ## chemistry

How do you write a balanced equation for the preparation of phenylmagnesium bromide and it's reaction with benzophenone followed by neutralization in acid?

9. ## Physics

An interacting system of two objects has no external force acting on the system. The first has a mass of 2.00kg and is moving with a velocity (2.00m/s)i + (1.00m/s)j at time t=0s. The second object has a mass of 3.00kg and is moving with a velocity

10. ## Algebra

Let a and b be real numbers, where a

11. ## Math

Can someone please check to see if I answered these true and false statements correctly? Thank you! 1. A triangle can have two right angles. (TRUE??) 2. An equilateral triangle is also an acute. (TRUE??) 3. A right triangle can also be an isosceles.

12. ## Physics

Two objects are moving in the xy-plane. No external forces are acting on the objects. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. Some

13. ## Algebra

What are the coordinates of the points where f(x) =x^3-x^2+x+1 And g(x)=x^3+x^2+x-1 intersect?

14. ## Calculus

BoxedNGone truck rentals calculates that its price function is p(x)=160-2x,where p is the price (in dollars) at which exactly x trucks will be rented per day. Find the number of trucks that BoxedNGone should rent and the price it should charge to maximize

15. ## biomechanics

Consider an experiment where a subject lands during two conditions from a height of 0.2 m. During the first landing condition, the subject lands 'stiffly' (e.g., very little knee flexion). During the second landing condition, the subject lands 'softly'

16. ## maths

a yacht is moving at 10km/h in a south easterly direction and encounters a 3km/h current from the north. find the actual speed and direction of the yacht

17. ## Physic

Show the equation that 100g of 100C steam will completely melt 800g of 0C ice.

18. ## Physics

A simple pendulum of length 2.00m is made with a mass of 2.00kg. The mass has speed of 3.00 m/s when the pendulum is 30 degrees above its lowest position. -What is the maximum angle away from the lowest position the pendulum will reach? -What is the speed

19. ## Physics

A 18 g bullet is fired into the bob of a ballistic pendulum of mass 1.4 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet.

20. ## creative writing

1. Poetry that is short in length and focuses on feelings and thoughts of the speaker or narrator is called:(Points : 3) narrative lyric a ballad a haiku 2. What is the rhyme scheme of most limericks?(Points : 3) AABBA ABBBA ABCABC AAAAB 3. Which is true

21. ## Anatomy

Graded potentials are: arise when ion movement causes a minor change in the resting membrane potential. usually propagate down the length of an axon. occur when voltage-gated channels open. are most often observed in axons. are usually associated with ion

22. ## Comm Arts

3 differences between the book and the movie "The Prince and the Pauper".

23. ## Math

Choose a number. Multiply by 2. Add 6 to the product. Divide by 2. Then subtract 3. What is the answer? Repeat this process using two different numbers.

24. ## consumer math

\$799.99 with 40% off rounded to the nearest dollar

25. ## physics

As part of a kinetic sculpture, a 5.6 kg hoop with a radius of 3.8 m rolls without slipping. If the hoop is given an angular speed of 2.1 rad/s while rolling on the horizontal and then rolls up a ramp inclined at 17.7◦ with the horizontal, how far does

26. ## calculus

use L'Hopital's Rule to evaluate lim (4x(cos 8x-1))/(sin 8x - 8x) as x->0

27. ## chemistry

1. (3.0x10^4) divided by (6.2x10^1) = 5x10^2? 2. (4.7x10^-3) divided by (9x10^-4) = 5x10^-6 3. (3.0x10^4) times (6.2x10^1) =1.9x10^6 4. (4.7x10^-3) divided by (9x10^-4) =5x10^-6 5. (5.1x10^2) divided by (3x10^4)

28. ## maths

aman had 128 trading cards. he gave 3/8 of his cards to mohit and 1/4 cards to kushal. how many cards he give away altogether?

29. ## chemistry

The equilibrium constant for the chemical equation is K = 4.90 at 199 °C. Calculate the value of the Kc for the reaction at 199 °C. N2(g)+3H2(g)=2NH3(g) Kc=?????

30. ## Physics

A wire is made by attaching two segments together, end to end. One segment is made of aluminum and the other is steel. The effective coefficient of linear expansion of the two-segment wire is 19.0 x 10-6 (C°)-1. What fraction of the length is aluminum?

31. ## Chemisty

What mass of carbon dioxide is formed by the complete combustion of 885g of methanol?

32. ## chemistry

Consider the reaction between 52.0 mL of liquid ethanol (C2H5OH; density = 0.789 g/mL) and 25.4 L of O2 at 27.0°C and a pressure of 1.65 atm. The products of the reaction are CO2(g) and H2O(g). Calculate the number of moles of H2O formed if the reaction

33. ## Chemistry 2

what is the pH in a 0.13M solution of aniline (Kb=4.3*10^-10). What is the concentration of C6HNH2 in the same solution?

34. ## Physics

The best time to dig clams is when the low ocean tide is lowest (when you have the lowest possible tides). This occurs when the moon is full half full moon quater moon actually all low tides are about the same

35. ## Early Childhood

What is the most important difference between consequences and punishment? a. Punishment is often late. b. Consequences are not as bad as punishment c. Consequences are a result of the child's actions. d. Punishment is the result after the action. I chose

36. ## math

A trail mix recipe calls for 6 cups of peanuts. You have 4 small packages that each contain 2/3 cup of peanuts. How many more cups of peanuts do you need to get?

37. ## math

in a group of 180 person composed of men, women and children there are twice as many men as women and three times as many women as children. how many are there each?

38. ## Chemistry

Describe what happens to a co2 sample when the following changes are made: (a) The temperature is increased from -100°c to 0°c at constant pressure of 2 atm B) The pressure is reduced from 72 atm to 5.0 atm at a constant temperature of 30°c C) The

39. ## Statistics

In a population, heights of males are normally distributed with u=180 cm and sigma^2=16 cm^2, while the heights of females are normally distributed with u=170 cm and sigma^2= 25 cm^2. a) One random male and one random female are selected from the

40. ## math count warm up

What positive four-digit integer has its thousands and hundreds digits add up to the tens digit. Its hundreds and tens digits add up to its once digit and its tens and ones digits add up to the two digit number formed by the thousands and hundreds digits?

41. ## government

What effect does the result of the republican party winning the election have on the Obama presidency?

42. ## Math

Brandon buys a radio for 43.99\$ in a state where the sales tax is 7% How much did he pay in taxes ? What is the total Brandon pays for the radio?

43. ## calculus

find the derivative of the function y=(2x+1)^3(4x+1)^-4

44. ## art/photography

1. In sandy skoglunds THE COCKTAIL PARTY what was the artist contrasting? 2. What did the artist say about her work? 3. What does the artist deal with in all of her illustrations? 4. What happens to sandy skoglunds installations pieces and what become of

45. ## physics

A neutron with a mass of 1.67x10^-27 kg traveling east with a kinetic energy of 2.00x10^-21J collides perfectly elastically with helium nucleus with a mass 6.68x10^-27 kg that is initially at rest. After the collision, the neutron has a kinetic energy

46. ## Statistics

A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not? I understand that the score in question is 3 standard deviations above the mean. But I thought that I would need

47. ## Physics

A car of mass 900 kg pulls a caravan of mass 400 kg along a straight horizontal road with an acceleration of 2 ms-2. Assuming that the frictional forces are negligible, the tension in the coupling between the car and caravan is

48. ## Physics

A mass of 2.0kg traveling at 3.0 m/s along a horizontal plane hits a relaxed spring 20cm away from it. The coefficient of kinetic friction is 0.3. The mass is slowed to zero velocity when the spring has been compressed. By how much the spring has been

49. ## Chemistry

Is my answer correct? Calculate the mass of frost (water ice) on a piece of dry ice that would completely react with 2 mmol of phenylmagnesium bromide. (1/44 CO2)*(0.002mol of phenylmagnesium bromide)= 0.0000455

50. ## College algebra

Use descartes rule of sign to determine the possible number of positive real zeros and possible number of negative 6x^5-6x^4+7x^3-8

51. ## English/help almost due

Longfellow repeats the line “the tide rises, the tide falls” throughout his poem. What idea is he trying to emphasize about the difference between nature and human life through this repetition?

52. ## Clinical chemistry

Prepare a 10 percent solution of sulphuric acid from a 98 percent stock solution of the acid in a 500mls beaker

53. ## Physics

A person weighs 150 pounds. He is standing on a scale in an elevator and stands on a scale. The elevator is accelerating upwards at a rate of 10 m/s/s, what is the reading of the scale? 150 pounds about 75 pounds about 300 pounds not enough info

54. ## calc

A farmer intends to fence o a rectangular pen for his pig Wilbur, using the barn as one of the sides. If the enclosed area is to be 50 square feet, what is smallest amount of fence needed, in feet?

55. ## SCIENCE

CAN WE USE A COPPPER VESSEL FOR STORING 1 MOLAR AgNO3 SOLUTION? IF NO JUSTIFY BY GIVING CHEMICAL REACTION BETWEEN THEM

56. ## Calc

Find the x–coordinate of the point on the parabola mc002-1.jpg nearest to the point (4, 0).

57. ## Trigonometry

The wheelchair ramp is 4.4 m long. It rises 1.2 m. What is its angle of inclination to the nearest degree?

58. ## physics

A plane cruising along at 268 m/s, in straight level flight wants to drops a bomb. He is at a height of 1000m. At what distance should the pilot release the bomb in order to hit his target?

59. ## Calc

Find the x–coordinate of the point on the parabola y=x^1/2 nearest to the point (4, 0).

60. ## Health Care Manegement

How might ethical issues alter your way of conducting change in the organization.

61. ## History

Wich of the the following is an example of a joint-stock company

62. ## Physics

A box weighing 178N slides down a ramp with an initial velocity of 0.5m/s^2. The ramp has an angle of 24 degrees and is 3m long. What is the acceleration of the box? I know that F=ma but how do I find a?

63. ## average

the average of 4 numbers is 36. what is the sum of the 4 numbers then?

64. ## English

We sometimes find that we sit in front of a TV set without thinking anything. It is very important for us to select good TV programs. We must try to make the vest use of it. ------------------------ What does the word 'it' in the last sentence refer to?

65. ## science

a mechanic applies the force of 50 N at a distance of 40 cm from the pivot on a wheel wrench . what is the size of the moment ?

66. ## AP CALC

the curve y=ax+ b/x has a relative minimum at the point (1,4). find the values of a and b. please help. I have no idea how to solve this.

67. ## physical science

Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.

68. ## English

1. When she was young, she had a dream. 2. When young, she had a dream. 3. When being young, she had a dream. 4. Being young, she had a dream. 5. Young, she had a dream. 6. When young, she had dream. ------------------------ Which ones' are grammatical?

69. ## calculus

find f[f(x)] and g[f(x)] f(x)=4x^2-1; g(x)=4/x

70. ## calculus

find f[f(x)] and g[f(x)] f(x)=2x^2-5; g(x)=2/x

71. ## Foundations of Measurement

Approximately 400,000 students took the GRE in 2009. Observed mean for the Verbal score was 540 with a standard deviation of 80, and the observed mean quantitative score was 500 with a standard deviation of 100. Assuming distribution was normal, answer the

72. ## math

What is the GCF for 315 & 882

73. ## Can you check my answer - Physics

A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag force from the air upward on it increases. When the upward force is 0.7 N, what is the direction and magnitude of the net force on

74. ## ap calc

find the maximum value of f(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how to solve it. f'(x)=-3sin(x)-2cos(x)=0 I don't know what to do after this please help

75. ## physics

A coolant fluid has a latent heat of evaporation of 234 kj/kg . If the pump rate is 2250g per minute. How much thermal heat is removed each hour?

76. ## physics

The latent heat of fusion for metal is 246kj per kg. How much heat would be used by melting 10 tonnes of metal?

77. ## Algebra 2

Solving By Factoring 2x(2x+1)=2 Please show work!!!

78. ## Statistics

A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?

79. ## Algebra 2

Solving By Factoring (x-8)(x-5)=x Please show work!!!

80. ## physics

A 40kg box of sweet cherries at 10 ° c cosisting of 30kg water and 10kg cherries is to be frozen at -30°c.Calculate the total amount of heat that needsto be removed from the cherries . The specific heat capacity of cherries is 3.43kj /kg°c. The specific

81. ## physics

A 7.75 kg(75.95 N)box is placed on a 29.7° incline on top of a lab table. The ramp is 3.11 m long, at the bottom of the incline the box slides horizontally for a short distance before rolling off the lab table. If the table is 0.84 m high, find how far

82. ## Algebra 2

Solving By Factoring: The length of the side of a large square is 1 cm less than twice the length of the of the side of a smaller square. The area of the large square is 33cm^2 more than the area of the small square. Find the length of the sides of the two

83. ## physics

A cricket pitch roller of diameter 1.5 m has a mass of 450 kg; it is pulled by a handle attached to its centre. Find the minimum force to pull up a step which is 250 mm high if the roller handle makes an angle of 30o with the horizontal.

84. ## Algebra 2

Solving Systems of Equations in Three Variables: 3x+4y+z=1 x+3y-z=-2 -2x+y-2z=-5 Please show work

85. ## Algebra

2/3y+5-3-11/12y. Trying to simplify. 2/3 y-11/12 y+5-3. 8/12y+5-3. 3/4y+2

86. ## math

a person who writes ads for an inn.

87. ## math pre algebra

if x =7 and y=9 and the answer is 98 what would the expression be?

88. ## Check my physics answer

When should you express a vector along the x-axis as a negative vector? when its magnitude is less than 1 when the arrow representing the vector would point toward negative x when the arrow representing the vector would point toward positive x when its

89. ## Algebra 2

Solving Systems of Equations in Three Variables: 3x+3y-z=-3 -2x-3y+2z=3 x-6y+3z=0 PLease show work

90. ## physics

A 40kg box of sweet cherries at 10 ° c cosisting of 30kg water and 10kg cherries is to be frozen at -30°c.Calculate the total amount of heat that needsto be removed from the cherries . The specific heat capacity of cherries is 3.43kj /kg°c. The specific

91. ## chemistry

If 8.16 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?

92. ## Math

A family purchased a new ski boat for \$20,000. The loan agency required a down payment and financed the balance for 36 months with an APR of Determine the total finance charge and monthly payment for the loan.

93. ## Chemistry

2.The solubility of sodium chloride at 20 degrees Celsius is 358g/1000g H20, or 358g/1358g solution. How many grams of sodium chloride would you expect to dissolve in 2200 grams of H20 at 20 degrees Celsius?

94. ## Math -word problem

There is a room 10 feet high by 10 feet wide by 10 feet in length. On one wall, there is an electrical outlet 1 foot from the floor and centered five feet from each side of the wall. On the opposite wall, one foot from the ceiling and centered five feet

95. ## Anatomy

Graded potentials: arise when ion movement causes a minor change in the resting membrane potential. usually propagate down the length of an axon. occur when voltage-gated channels open. are most often observed in axons. are usually associated with ion

96. ## Physics

A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after the impact, a 200g piece moves along the x-axis with a speed of 2.00m/s and a 235g piece moves along the the y axis with a speed of

97. ## Geometry

Conic sections: Ellipse Show that the distance between the directrix and center is D1C = a/e. F1V1 + F1V2 = eD1V1 + eD1V2 2a = e(D1V1 + D1V2) = e(D1V1 + [D1V1 + V1V2]) = e(D1V1 + V1V2 + V2D2) = e(D1V1 + V1C + + CV2 + V2D2) = e([D1V1 + V1C] + [CV2 + V2D2])

98. ## physics 1

A 8.00-kg block of ice, released from rest at the top of a 1.44-m-long frictionless ramp, slides downhill, reaching a speed of 2.54m/s at the bottom.

99. ## maths

a braking force of 200n is applied to slow the car down how may seconds the force must be applied for in order to bring the car to a complete stop.

100. ## Physics

A dynamics cart with a mass of 1.70kg on a horizontal table is attached to a suspended mass of 0.40kg and released from rest. If a frictional of 2.0N opposes the motion of the cart how far does the cart travel in 1.5s

101. ## Finance

what is the internal rate of return for an initial outlay of \$10,500 resulting in a single cash inflow of \$19,932 in 11 years?

Students were asked to write an algebraic expression for the sum of three consecutive natural numbers x + (x + 1) + (x + 2) = 3x + 3. Another wrote (x - 1) + x + (x + 1) = 3x. Explain who is correct and why.

103. ## calculus

find the derivative of y with respect to x if y=(13x^2-26x+26)e^-3x. y'=

104. ## College Algebra

'rental miles: it cost 27.95 per day plus 0.15 per mile to rent a car. How many miles was a car driven that was rented for one day and had a rental bill of \$45.95?'

105. ## Finance

I am expected to pay a dividend of \$5.10 year for the next for years. If the current price of my stock is \$31.67, and my equity cost of capital is 15% what price would I expect my stock to sell for at the end of four years?

106. ## calculus

find the derivative y=ln(1-6x)

107. ## chemistry

Calculate the molar mass of TaCl5 (g). when 8.95 (g) are present and occupy a volume of 715ml at a temperature of 250 degrees celcious and 1.5 atm pressure.

108. ## math

5. A group of children are playing baseball in a small field. Their baseball diamond is a square with sides 14.1 m. When throwing the ball from home plate to second base how far must it go? Round your answer to one decimal place.

109. ## Math 112

A student finds the value of square root of 3 on a calculator and says that this is the exact value of square root of 3 . How do you respond?

110. ## chemistry

What is the vapor pressure of a solution of 0.5mol of a non-volatile impurity x and 2.0 g of TaCl5 (L) at a temperature of 226 degrees celcius? The vapor pressure of TaCl5 (l) at 226 degrees celcius ,621mmHg

111. ## physics

During a baseball game, a batter hits a pop-up to a fielder 92m away. The acceleration is 9.8 m/s^2. If the ball remains in the air for 5.8 seconds, how high does it rise?

112. ## Math

Please help me write this in an equation. "Tyrone bought 15.3 gal of gasoline priced at g dollars per gallon, 2 qt of pil priced at q dollars per quart, and a wiper blade priced at \$3.79. Write an expression that represents the total cost of these items.

113. ## calculus

find the derivative of the function s=t^9lnabsolut power t

114. ## Chem

At 930 K, Kp = 0.30 for the following reaction. 2 SO2(g) + O2(g)=>2 SO3(g) Calculate the equilibrium partial pressures of SO2, O2, and SO3 produced from an initial mixture in which the partial pressures of SO2 and O2 = 0.51 atm and the partial pressure of

115. ## physics

A ball is kicked at a 45* angle over a 6 ft fence 20 m away at 17 m/s. How far above the fence will the ball pass? No air resistance

116. ## Physics

A moving 4.5 kg block collides with a horizontal spring whose spring constant is 226 N/m (see figure). The block compresses the spring a maximum distance of 8.0 cm from its rest position. The coefficient of kinetic friction between the block and the

117. ## math

Write a number sentence. There are 17 goats in the barn. 8 goats go outside. How many goats are still in the barn?

118. ## phyics

A crippled ship is being assisted to port. The motor is stuck, and is moving the boat east with a speed of 15 km/h. The current is flowing a 9 km/h at 30 degrees east of south. A. If the maximum speed of the tugboat which is trying to rescue the disabled

119. ## American Constitutional Law

The Constitution may be amended by A. Congress proposing and the states ratifying an amendment. B. a majority vote in an election. C. the Constitutional Convention. D. Both A and C Is it D?

120. ## physics

A target lies flat on the ground 4 m from the side of a building that is 10 m tall, as shown below. The acceleration of gravity is 10 m/s2 . Air resistance is negligible. A student rolls a 4 kg ball off the horizontal roof of the building in the direction

121. ## Engineering science

a roller of diameter 1.5 m has a mass of 450 kg; it is pulled by a handle attached to its centre. Find the minimum force to pull up a step which is 250 mm high if the roller handle makes an angle of 30o with the horizontal

122. ## Pre-trig/Calc

Please help me. Use Descartes' rule of signs to describe the roots for each polynomial function. 3. m(x)=x^3+3x^2-18x-40

123. ## chemistry

how many grams of CO are needed to react with 2.90 grams of Fe2O3?

124. ## Derivatives

Can you help me find the derivative of this function, I keep messing up of the steps :( f(x)= (x-2)(x^2-3x-1)

125. ## Calculus

find the derivative of y= x^3+8/x+2 the / is meant to be a fraction bar, I am really really bad at finding the derivative of a fraction function, could you help by showing me exactly how, Thanks

126. ## calculus

find the derivative of the function y=log absolut power 2-x

127. ## physics

An empty 160 kg elevator accelerates upward at 1.2 m/s 2 . The acceleration of gravity is 9.8 m/s 2 . What is the tension in the cable that lifts the elevator cab? Answer in units of N

128. ## Goverment

If you could get the government to implement one policy what would it be? Can't be marijuana legalization.

129. ## English

I can't walk anymore. Then James said, "Come on!" We're almost at the top. ------------------ In the passage, what is the meaning of 'Come on!'?

130. ## Math

A survey carried out on 40 students about when they did their homework over the weekend F=(homework done on friday) S=(homework done on saturday/Sunday ) n(f)=20,n(s)=29 How many did both days ?

131. ## Health

6. Herbal medications have which of the following properties? They are heavily regulated by the Food and Drug Administration. They are safe because they are made from "natural" ingredients. The amount of featured ingredients can vary from sample to sample.

132. ## physics

A mechanic jacks up a car to an angle of 10◦ with the horizontal in order to change the front tires. The car is 2.78 m long and has a mass of 1110 kg. Its center of mass is located 1.15 m from the front end. The rear wheels are 0.25 m from the back end.

133. ## Chemistry

What isthe theoretical yield of a microscale reaction of these materials in which 300 mg of bromobenzene, 50 mg of magnesium, and 350 mg of benzophenone were used?

134. ## anthropology

A key concept for understanding male dominance in gender-stratified societies is the idea of

135. ## Chemistry

If there are 25 mg of water in a typical drop of water, how many drops of water would react completely with 2 mmol of phenylmagnesium bromide? How do I set up the problem?

136. ## English

A sentence with a compound predicate A. may have a single subject

137. ## English (Grammar)

What part of speech is the infinitive phrase used? Is this a noun, adjective, or adverb? 1. The coach's example is one to take seriously. 2. We all made an effort to work harder. 3. The contest requires all entries to be mailed by Thursday. 4. The players

138. ## physics

A mechanic jacks up a car to an angle of 10◦ with the horizontal in order to change the front tires. The car is 2.78 m long and has a mass of 1110 kg. Its center of mass is located 1.15 m from the front end. The rear wheels are 0.25 m from the back end.

139. ## Science

In addition to Carbon and Hydrogen, which elements must be available to form a DNA nucleotide monomer?

140. ## Physics

A person weighs 150 pounds. He is standing on a scale inside an elevator. If the elevator is free-falling downward (perhaps the cable broke), what is the reading of the scale? 150 pounds about 25 pounds 0 pounds not enough info

141. ## math

Complete the sign for each equation 65/60 - 1 this is what the paper has on it now i think that you are supposed to put a + - * I'm not sure.

142. ## Chemistry

If 500 mol of hydrogen gas occupies 5.00L at 25 celsius, what is the pressure in atm? I believe this is Ideal gas law. I can't figure out how to put it in the PV=nRT.

143. ## Clinical chemistry

Describe how you can prepare 0.25 molar solution of sodium hydroxide from an 80 percent stock solution in a 500mls beaker

144. ## projectives

A cannon ball is fired horizontally with a velocity of 50m/s from the top of a cliff of 90mh. after how many seconds will it strike the plane at the foot of the cliff and at what distance at the foot of the cliff will it strike?

145. ## Chemistry

Using the following data 1. CU3+ + 2e- ---> Cu+ E1= 1.28V 2. CU2+ + e- ---> Cu+ E2= 0.15V 3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V 3. Cu+ + e- ----> Cu (s) E4= 0.52V calculate the standard reduction potential for the reaction of Cu(III) to Cu(II). Is it .783 V?

146. ## Early Childhood

Toys advertised on television play an important part in defining: a. gender b. differential treatment c. sex roles d. appearances My answer is c. sex roles/mainly because of all the super heros

147. ## math

Find the missing number.(169,13)(49,7)(144,?)(81,9)

148. ## physics

A 65 kg water skier is pulled up a 15° inclined by a role parallel to the incline with a tension of 500N. The coefficient of kinetic friction is .25. What are the magnitude and direction of the skier's acceleration? I found the weight its 637.65 I found

149. ## Physics

Two masses ( 2.3 kg and 4.2 kg) connected by a massless rope hung over opposite ends of a frictionless pulley. Each mass is initially 1.50 m above the ground, and the top of the pulley is 6.5 m above the ground. What maximum height does the lighter object

150. ## Physics

calculate the component of a force of 200n at a direction of 60 to the force.

151. ## Physics

Traveling at a speed of 22m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of friction between the tires and the road is 0.68. How much time does it take for the car to come to a halt? As usual, ignore

152. ## science

Why is the system of sun and planets called the solar system

153. ## Math - Word problem

I posted this earlier and received a reply - but the reply doesn't make sense. I drew up a picture of what was posted, but the figure comes out to finding the hypotenuse of a triangle that is 16x14 - not 16x10. What am I not seeing? Original problem: There

154. ## Algebra

Assume that f(3)=4. Name a point that must be on the graph of y=f(x)+4

155. ## calculus

find the derivative of the function y=(4x+3)^5(5x+2)^-4

156. ## Algebra

Assume that f(3)=4. Name a point that must be on the graph of y=1/2f(x/2).

157. ## Physics

A 0.9-kg block (mass m) and a second block (mass M) are both initially at rest on a frictionless inclined plane. Mass M rests against a spring that has a force constant of 12.2 kN/m. The distance d along the plane between the two blocks is 3.64 m. The

158. ## World History

The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of the Mongols compare with the same people who brought the Pax Mongolia? help please, I don't get it. I have to do this for

159. ## science

Which planets are the inner planets

160. ## college algebra

hw to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0

161. ## college algebra

how to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0

162. ## art

How to draw a hotdog

163. ## English

How can I make this sentence present tense? Or is it already present tense? The problem I'm having is with the word "banished" which is past tense. And my teacher wants us to write in the present tense. I have the main verb present so does that make the

164. ## physics

An air-cooled motorcycle engine loses a significant amount of heat through thermal radiation according to the Stefan-Boltzmann equation. Assume that the ambient temperature is T0 = 24.5°C (297.65 K). Suppose the engine generates 11.5 hp (8.58 kW) of power

165. ## English

What are some words that start with 'w" and mean the same as "change"?

166. ## Science

what happens to your body during exercise for eg sweats red cheeks and heartbeat

167. ## Physics

A 0.422-kg ball with a speed of 1.31 m/s rolls across a level surface toward an open 0.348-kg box that is resting on its side. The ball enters the box, and the box (with the ball inside it) then slides across the surface a distance of 0.473 m. What is the

168. ## Math

How do you find the sonstant variable for Direct variation or k? And how would you solve? It if it was to find what x or y is

169. ## Math

For the triangle BMW, where M is 90 degrees, the hypotenuse is 13 and the leg BM is 5, find cos W.

170. ## ap calc

let f(x)= bx^2+6x, if x< or equal to 2 ax^3, if x>2 find the values of a and b such that f(x)is differentiable at x=2 I need help with this question I know you have to set both functions equal to each other. but I don't know how to solve for a and b

171. ## algebra

A rectangle has a length that is 2 less than 3 times the width. If the area of this rectangle is 16, find the dimensions and the perimeter.

172. ## ap calc

the curve y=ax+ b/x has a relative minimum at the point (1,4). find the values of a and b. please help. I have no idea how to solve this.

173. ## math

Let U = {9, 10, 11, 12, 13, 14, 15}, A = {9, 10, 11, 12}, B = {9, 10, 13, 14}, and C = {11, 13, 15}. List all the members of the given set. (Enter your answers as a comma-separated list.) (A ¾ B) ¿ C

174. ## ap calc

find the maximum value of f(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how to solve it. f'(x)=-3sin(x)-2cos(x)=0 I don't know what to do after this please help.

175. ## Math

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