# Questions Asked onDecember 6, 2012

1. ## math,algerbra

find circumference and area of circle use 3.14 for unknown round to nearest tenths. 2) r=11.5 3)d=3.5 show steps to solve

2. ## algebra

the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE

3. ## Physics

A runaway truck lane heads uphill at 30◦ to the horizontal. If an out of control 15000 kg truck enters the lane going at 30 m/s , how far along the ramp does it go? The acceleration due to gravity is 10 m/s2.

4. ## Child day care

12. Which of the following is a factor that's very important to high-quality child care, but not often covered in state licensing regulations? A. The group size B. A fire safety clearance C. The staff-to-child ratio D. An annual visit by a representative

5. ## physics

A 5.7 kg block attached to a spring executes simple harmonic motion on a frictionless horizontal surface. At time t = 0 s, the block has a displacement of -0.70 m, a velocity of -0.80 m/s, and an acceleration of +2.7 m/s2. The amplitude of the motion is

6. ## Chemistry

Concentration 15.8 mg/L Final Volume 100.0 mL What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option has been diluted by taking 25.0 mL of lake water and diluting it to the indicated final

7. ## Chemistry

Suppose that absorbances of several solutions were measured at 545 nm. What is the frequency of this wavelength? What is the energy of this wavelength? (h=6.626 times 10^-34J*S)

8. ## statistics

Answer the following: (A) Find the binomial probability P(x = 5), where n = 12 and p = 0.70. (B) Set up, without solving, the binomial probability P(x is at most 5) using probability notation. (C) How would you find the normal approximation to the binomial

9. ## ACC305 Accounting for Decision Making

I am trying to get my research paper done, but I am having some trouble find the information that I am looking for on the company Bausch & Lomb. Here are the question that I am having trouble finding information for. 1. Who within the organization has the

10. ## maths-probability

From the word HINDUSTAN ===== (a) In how many of these anagrams none of the vowels come together. (b) In how many of these anagrams do the vowels and the consonants occupy the same relative positions as in HINDUSTAN?

11. ## physics

A 0.255kg rock is thrown with a speed of 12.0m/s.How much energy does it initally passess?

12. ## physics

A 1.56kg seagull dives through the air and gains 4495 of energy.What is the birds speed?

13. ## Geometry

Write the if-then statement that follows from that pair of true statement. If the doorbell rings, then the dog barks.

14. ## Geometry

What can you conclude from the given true statements? If there is a full moon tonight, the dog will howl. The moon is full tonight.

15. ## statistics

An organization sends a random sample of surveys to 100,000 people and received 4,781 responses. A) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate.

16. ## algebra

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 9. The material is considered defective if the breaking strength is less than 156 pounds. What is the probability that a single,

17. ## statistics

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 9. The material is considered defective if the breaking strength is less than 156 pounds. What is the probability that a single,

18. ## ssct

(phyics) question: calculate the final temperature of the water if 400grams of water at 80degress Celsius is poured into a 100grams pot at 30dgrees Celsius .

19. ## math

determine the radius of convergence of the power series: Σ(n=1 to inf) [(2^n * n! * x^n)/ n^n]

20. ## Microeconomics

1. Complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data), either as a Microsoft Excel spreadsheet, or as a Microsoft Word table. Assume that the price is \$165 and the fixed costs are \$125, at an output level of 1. Also assume that the data

21. ## english

i need help writing an annotated bibliography, and cite the work. and i don't know how to get started on data-my topic is "why are so many black young mens killing each other. or should i write about sucide commited by yong people

22. ## Math Statistics

If the range of a set of scores is 14 and the lowest score is 7, what is the highest score? Is it also 7 since 14- 7 = 7? Just asking.

23. ## Chemistry

So my chem experiment asks us: What is the molarity of a 6.0 ppm solution (it's a 6.0 ppm chlorophyll solution, hexane is the solvent) Now, I've found a few ways to solve for it but they both give me different values. If it's possible, could you just tell

asked by Just One Stranger
24. ## Linear Programming - Math

A small software company publishes computer games and educational and utility software. Their business strategy is to market a total of 36 new programs each year, at least four of these being games. The number of utility programs published is never more

25. ## Calculus

How many coefficients in the binomial series expansion of (1+x)^7 are divisible by 7?

26. ## Chem/ Calculating Lattice Energy, Vapor Pressure

How do you calculate lattice energy? I have to place the following in order of decreasing magnitude of lattice energy, but I don't know how to do it. KF MgS RbI Is there a formula or some simple way of knowing which has the greatest energy? 2. I also have

27. ## calculus

a bridge is 10 m. above a canal. A motorboat going 3 m/sec passes under the center of the bridge at the same instant that a woman walking 2 m/sec reaches that point. How rapidly are they separating 3 sec. later?

28. ## math

You have finally saved 10,000 and are ready to make your first investment. You have the three following alternatives for investing that money: 1) Captial cities ABC Inc. bonds with a par value of \$1000 that pays an 8.75 percent on its par value in

29. ## pharmaceutical chemistry

when is a substance classified as pharmaceutical aid or necessity?PLEASE HELP ME :)THANKS A LOT.

30. ## mba

from a set of 1000 observations known to be normally distributed the mean is 534 cm and sd is 13.5 cm. how many observations are likely to exceed 561 cm, how many will be between 520.5 cm 547.5 cm, between what limits will the middle 50% of the

31. ## physics

Two particles A and B have velocities 3^i and v^j respectively (in m/s). (a) Find rBjA; the position of B relative to A for all t given that rBjA(t = 0) = 9^i + 6^j (in metres). (b) Find the value of v such that A and B collide. (c) If v = 1 m/s, nd the

32. ## physics

A boy throws a ball at 5.5 m/s at an angle of 25.4° above the horizontal off a cliff which is 70.8 m high. What angle does the velocity of the ball make with the horizontal 0.78 s after the throw? (make the angle positive if the angle is above the

33. ## Finance

An income-producing property is priced at \$600,000 and is expected to generatethe following after-tax cash flows: Year 1: \$42,000; Year 2: \$44,000; Year 3:\$45,000; Year 4: \$50,000; and Year 5: \$650,000. Would an investor with arequired after-tax rate of

34. ## Physics

A mountaineer

35. ## trignometry

how to find the value of any standard angle ??? for example sin 60*??? without using table

36. ## science ocean

i need help. ms.sue espesually you.but give me wods that are for third graders.give me one paragragh.thanks

37. ## Surface area

if height and radius of frustum are h1 nad r1 respectively . if h2 and r2 are the heights and radius of the smaller base of frustum respectively and h2:h1 =1:2,then r2:r1 is equal to?

38. ## French

Put in the correct order : nous , habitons. Voila , maison, ou ( where) , la

39. ## calculus

a lighthouse is 1 km from the shoreline and revolves at 10 pi radians a minute what is the speed of the light as it sweeps across the shore as it lights up at sand at 2 km from the light house

40. ## Statistics

A quality control inspector wants to estimate the mean inside diameter of the washers produced by a certain machine. A preliminary sample indicates that the inside diameters have a standard deviation of 0.30 millimeters. What sample size does he need to

41. ## Physics - Heat Transfer

I am trying to calculate heat transfer between two objects. The units are as follows: m1: 100 g t1: 10 degrees C spec heat 1: 1.00 cal/g degree C m2: 200 g t2: 90 degrees C spec heat 2: 0.2 cal/gm degree C I set Q1 = Q2 m1 x spec heat 1 x delta T1 = m2 x

42. ## Physics

A 700 KG horse is pulling a sled at a velocity of 3.5 m/s. If the horse's power output is 746 watts, the force exerted on the sled is?

43. ## Economics

Which of the following is a characteristic of a traditional economy? A. It encourages innovation and change. B. It is usually based on light industrial production. C. It has a high standard of living. D. It revolves around the family unit.

44. ## us government

A person in Michigan applying for a job in Alabama can expect not to be discriminated against because of the ___________ Clause.

45. ## Maths

If tom got 200 euro for his birthday. He spent 1.0 how much did he spend?

46. ## math

0.5 kg of tea was purchased at Rs 80 per kg.if it was sold at a gain of 10%.find its selling price

asked by words problem
47. ## Chemistry

Consider the reaction 3CH_4(g)rightarrow C_3H_8(g)+ 2H_2(g). Calculate delta G at 298 K if the reaction mixture consists of 40atm of CH_4, 0.015atm of C_3H_8, and 2.3×10^−2atm of H_2.

asked by Josh G.
48. ## Science

How can a cup of water have more thermal energy than one pitcher of water?

49. ## Physics

1.A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change?

50. ## Chemisty

if the pressue within a tire changes from 1.35 atm to .95 atm the temperture will?

51. ## chemistry

The standard free energy of activation of a reaction A is 78.2 kJ mol–1 (18.7 kcal mol–1) at 298 K. Reaction B is ten million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ mol–1 (2.39 kcal mol–1)

52. ## Algebra 2 Rational Equations

What is the solution set of the equation? I know the answer is {-1} I just don't know how to get there. X^2-16 x-3 --------- = ------- -1 (x+4)(x+2) (x+2)

53. ## Chemistry

The fictitious compound, arrhenium fluoride ( ), reacts with itself to form a dimer with the formula Ah2F2 . The reaction is second order in AhF. The value of the rate constant is 8.591x10-3 M-1s-1. What is the initial rate of reaction in a reactor filled

54. ## physics

A nearsighted person has a far point located only 200 cm from his eyes. Determine the focal length of contact lenses that will enable him to see distant objects clearly. does anyone have any suggestion on how to tackle this problem?

55. ## ACC305 Accounting for Decision Making

I am trying to get my research paper done, but I am having some trouble find the information that I am looking for on the company Bausch & Lomb. Here are the question that I am having trouble finding information for. 1. Who within the organization has the

56. ## Physics

How much heat is required to melt 50 grams of ice heat it to its boiling point and then turn it into vapor

57. ## Chemistry

A 50 gram sample of liquid water at 25 degrees C is mixed with 29 grams of water at 45 degrees C. The final temperature of the water is...?

58. ## geometry

Define projection of a line

59. ## English

(1)It was December 7, 1941. (2) The freighter Florentine, 320 miles northeast of the Hawaiian Island of Hilo was lumbering along at about 15 knots when the garbled message came in over the radio: (3) “Attack on Pearl Harbor; This is not a drill!”

60. ## Chemistry

The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?

61. ## spanish

using preterite describe a normal morning routine until i get to class

62. ## airthmetic progression

If m, n are natural numbers, m > n, sum of mth and nth term of an increasing AP is 2m and their product is m^2–- n^2, then what is the (m+n)th term of the A.P.?

63. ## History

Compare and contrast Christianity and Islam.

64. ## diolouge

Can someone post or post a website of funny diolouges. The diolouge has to be at least 5 minutes long.

65. ## Physics

Andre at 60 kg, hits the trampoline after falling from 4 meters. The trampoline stretches 0.6 meters and andre stops in 0.3 seconds.What is the force constant of the trampoline?

66. ## Physics

a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks!

67. ## Math

3. In the small country of Varia, a bill becomes law only if of the senators approve it. What percentage is ? (1 point) 53% 58% 68% 88% 4. Write the percent 96.55% as a decimal. (1 point) 9655 965.5 0.9655 9.655 5. Liam wants to buy a bicycle that costs

68. ## Science

1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin can be produced by _______, which introduces DNA from one

asked by This Girl
69. ## Mia Math

22miles/55miles=12miles/Mhours 48 30 45 22 i think its 22 Solve the proportion using cross products.

70. ## calculus

A ball is thrown vertically upwards from a height of 6 ft with an initial velocity of 60 ft per second. How high will the ball go? Note that the acceleration of the ball is given by a(t)= 32 feet per second per second.

71. ## chem

What is the pH of a 0.22 M solution of HClO4?

72. ## English

(1)It was December 7, 1941. (2) The freighter Florentine, 320 miles northeast of the Hawaiian Island of Hilo was lumbering along at about 15 knots when the garbled message came in over the radio: (3) “Attack on Pearl Harbor; This is not a drill!”

73. ## chemistry

What concentration of the lead ion, Pb^{2+} , must be exceeded to precipitate PbCl2 from a solution that is 1.00 x 10^{-2} M in the chloride ion, Cl^- ? Ksp for lead chloride is 1.17×10−5 .

74. ## MINE Math

16. Calculate the interest earned on a savings account with \$800.00 that is invested at 5% annual simple interest for 5 years. (1 point)

75. ## Physics

What is the gravitational force between two runners standing 100 meters apart on a track, if their masses are 60 kg and 75 kg respectively?

76. ## MATHS

The population of town A increases from 1,346 to 1,500. In the same period, the population of town B increases from 1,546 to 1,800. a. Find the percent of increase in population for town A and for town B. b. Which town had the greater percent of increase?

77. ## statistic

A grain mill manufactures 100-pound bags of flour for sale in restaurant supply warehouses. Historically, the weights of bags of flour manufactured at the mill were normally distributed with a mean of 100 pounds and a standard deviation of 15 pounds. a.

78. ## analytical chem

What is the pH of a solution by dissolving 8.00 mmol of NaOAC in 200 mL of 0.100 m HOAC. (you need the pka for acetic acid)

79. ## INTRODUCTION TO COMPUTERS

THE COMPUTER MOUSE IS USED TO

80. ## chemistry

A balloon is inflaed outdoors on a cold day in lowa at a temperature of -40 c to a volume of 2.00 l. If the pressure remains constant, what is the volume of the same balloon if taken indoors at a temperature of 25 c?

81. ## calculus

Use left endpoints and 9 rectangles to find the approximation of the area of the region between the graph of the function cos2x and the x-axis over the interval [0, pi/2] . Round your answer to four decimal places.

82. ## Physics

16) A curve of radius 120 m is banked at an angle of 18°. At what speed can it be negotiated under icy conditions where friction is negligible? 2 m/s 12 m /s 20 m /s 5 m/s 11 m/s

83. ## College Physics

14) Given the following vectors, find the magnitude and direction: • A = 47 m and the angle is 0° • B = 62 m and the angle is 35° This is relative to the x-axis Magnitude: 401 m 140 m 104 m 0 m 503 m Direction: 20° 45° 55° 220° 90°

84. ## This is Urgent Science

1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin can be produced by _______, which introduces DNA from one

asked by This Girl
85. ## Physics

How much work is done by the centripetal force (in this case, the friction between the tires and the road) on a 1200 kg car moving on a circular track of radius 50 meters at a constant speed of 31.4 m/s?

86. ## statistics

Experience in investigating insurance claims shows that the average cost to process a claim is approximately normally distributed with a mean of \$80. New cost-cutting measures were started and a sample of 25 claims was tested. The sample mean of the costs

asked by Aurora G

Read the Thomas article, Squeeze Play, and discuss how long you think the emerging upstart airline carriers in Asia that are featured can continue their competitive role in the face of changing travel patterns and consumer behavior brought on by low cost

88. ## Physics, check my answer pls

4. All of the following are true about torque except: A. its units are Newton-meters. B. it can only be produced by a force. C. torque is zero unless the force is pointed perpendicular to the moment arm. D. a force whose line of action passes through the

89. ## Math

9m-7m-5=17; m=11

asked by Cj ashton
90. ## Physics

In the diagram below, how far from the end of the board can a 60 kg person walk before it will tip over? The mass of the board is 100 kg, and a 2-meter section of its 6-meter length hangs over the edge. Assume that the entire mass of the board acts at the

asked by Austin J
91. ## physics

An airplane flies due south at 185 km/h relative to the air. There is a wind blowing at 68 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground?

Three objects are moving along a straight line as shown in the figure. Taking the positive direction to be to the right, what is the total momentum of this system? Pos ---> 5.00 m/s, 8.00 kg Neg 2.00 m/s, 3.00 kg A) -14 kg m/s B) +106 kg m/s C) +14 kg m/s

93. ## english

What is the correct answer I ____ on the couch last night. A. lie B. lay C. laid D. lain

94. ## physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the

95. ## math

you borrow \$1200 from a bank that bank charges 9.5% simple annual interest. after 15 months you pay back the loan. how much interest do you pay on the loan? what is the total amount that you pay the bank.

96. ## Math

Schoolwork: 7:35 a.m. until 11:15 a.m. What is the elapsed time? Explanation why your answer is correct:

97. ## Physical Science

A car with a mass of 1,400 kg is traveling at a speed of 40 m/s. What is its momentum

98. ## Math

Lunch and Piano Practice: 11:15 a.m. until 12:50 p.m. What is the elapsed time? Explanation why your answer is correct:

99. ## Math

Schoolwork: 12:50 p.m. until 4:05 p.m. What is the elapsed time? Explanation why your answer is correct:

100. ## Math

Time with friends: 4:05 p.m. until 5:45 p.m. What is the elapsed time? Explanation why your answer is correct:

101. ## Math

Dinner: 5:45 p.m. until 6:10 p.m. What is the elapsed time? Explanation why your answer is correct:

102. ## math

Is it possible to have a figure an area of 9 square units and a perimeter of 30? If not, why? (PS I don't think it is possible.)

103. ## geometry

if in triangle JKL, JK= 9, KL = 11, and JL=12, and in triangle PQR, PQ=9, QR=11, and PR=11, explain why triangle JKL and triangle PQR are not congruent

asked by sherianna johnson
104. ## English

This homework question was removed due to a copyright claim submitted by Connections Education.

105. ## Math

The window is 60 inches wide. What is the width of the window in feet explain how to get the answer

106. ## Math

y/9 = 4 2/3 . Solve for Y . PLEASE HELP!

107. ## Math

1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (2, 4) and (6, 6) (2, 4) and (6, 6) (–2, 4) and (6, –6) (2, –1) and (–3, 3) 2. Given a scale factor of one-half , find

asked by Briana T
108. ## English

How coypu use duke in a sentence ?

109. ## English

Many people are surprised to learn how __1__ poverty is __2__ America. Today millions live below the poverty line, and the number seems to escalate daily. Judy and Martin Reed exemplify the old saying, “Opposites attract.” A __3__. Judy chooses work

What did Alexander Hamilton do to improve the US deficit?

what is the bullwhip effect in/and supply chain?

112. ## geometry

Pqrs -jklm with a scale factor of 4:3qr-8cm what is the value of kl

113. ## Science help needed

Posted by This Girl on Thursday, December 6, 2012 at 1:41pm. 1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin

asked by This Girl
114. ## Spanish

Conjugate the following irregular verbs in the simple present tense (indicative) 6. Tener(to have) Yo __________ 7. Tener(to have) Nosotros ________ 8. Venir(to come) Tú _________ 9. Venir( to come) nosotros________ 10. Salir( to leave). él/ella_________

115. ## statistics

Scores from a statistics exam are reported as deviation scores. Which of the following deviation scores indicates a higher position in the class distribution?

116. ## english

Identify the underlined words in each sentence. 7. (Because chickens peck at each other,) someone invented chicken glasses. independent clause adverbial clause complex sentence adjectival clause 10. The Great Dane, (a large dog,)leapt over the fence.

117. ## Geometry

C:\Users\Bailey Bubble\Documents\Untitled.png this is the question with the picture and the answer choices.

118. ## physics

calc the buoyant force on a 2 L helium balloon

119. ## Geometry

Where can the lines containing the altitudes of an obtuse triangle intersect? I. inside the triangle II. on the triangle III. outside the triangle A)I only B)I or II only C)III only D)I, II, or III PLEASE HELP ME ASAP!!!!

120. ## Algebra

If I have 10000 dollars and the interest rate is .40% when will my money double if compounded anually?

121. ## Social Studies

How did being part of the Arab Islamic world affect Spain?

122. ## 1 math question help

Write the inequality and solve for the following problem: The result of 6 subtracted from a number n is at least 2.

123. ## Algebra

Help Please! 2n(x-n)=x-5n+2 Solve for X

124. ## scientist

what is the therms " average atomic mass is a .............. average ,and so is calculated from a" normal " average?

125. ## Psychology

How does one's cognitive processes shape some aspects of personality?

126. ## 7th grade science Ms. Sue please

2. The smallest unit of life is the _____. (1 point) cell homeostasis organism protein 3. The nucleus is the largest of the _____. (1 point) chloroplasts mitochondria organelles ribosomes 6. Which is not found in animal cells? (1 point) central vacuole

127. ## Psychology

How does biological and environmental factors shape our cognitive processes?

128. ## 7th grade science Ms. Sue please only 5 questions

11. Which of these is selectively permeable? (1 point) door window screen wall mirror 12. The process that releases energy without using oxygen is ____. (1 point) photosynthesis respiration osmosis fermentation 13. The chromosomes in the nucleus of a cell

129. ## Geometry

Which three lengths cannot be the lengths of the sides of a triangle? A)25 m, 16 m, 10 m B)15 m, 13 m, 12 m C)18 m, 5 m, 10 m D)8 m, 8 m, 15 m

130. ## chemistry

QUESTION: Calculate the standard free-energy change (deltaG°) for the following reaction at 25 °C in kJ. 2Ag^3+(aq) + 3Zn(s) 2Au(s) + 3Zn^2+(aq) here's what i have so far: first i wrote out the half reactions: Au^3+(aq) + 3e^- --> Au(s) = +1.52*2 Zn(s)

131. ## Physics

A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal force N is exerted on the top of the ladder. A fireman of mass M climbs a distance d upward as measured along the ladder. (a):

132. ## algebra

Melissa drives her car 200 kilometers in 2.5 hours. How far can she drive in 6 hours at the same rate?

134. ## art

How does the Holy Trinity by Masaccio express the humanist ideals of the15th century Renaissance? Include examples from two other artists from the same era who express the same humanist ideals. Use one example from Gardner’s Art through the Ages and one

135. ## physics

A runaway truck lane heads uphill at 30◦ to the horizontal. If an out of control 15000 kg truck enters the lane going at 30 m/s , how far along the ramp does it go? The acceleration due to gravity is 10 m/s2.

An interstate highway has been built though a poor neighborhood in a city. In the afternoon, the sound level in a rented room is 114.0 dB as 172 cars pass outside the window every minute. Late at night, the traffic flow is only 7 cars per minute. (b) What

137. ## Math-Calculus

Volume using disk method: x=.000574y^(2)-.439y+185 Interval: (0,500)

138. ## physics

A runaway truck lane heads uphill at 30◦ to the horizontal. If an out of control 15000 kg truck enters the lane going at 30 m/s , how far along the ramp does it go? The acceleration due to gravity is 10 m/s2.

139. ## Chemistry

Using Dimensional Analysis, how many moles of sodium is 32.5 g of sodium? Could you please tell me the steps on how to solve this I am stumped.

140. ## Math(Sample Spaces)

Elsa had a rubber disc that was red on one side and blue on the other. She tossed this disc 3 times. Draw a diagram showing all the possible outcomes she could get in 3 tosses of the same rubber disc 1st toss can be red or blue 2nd toss can be red or blue

141. ## Chemistry

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?

142. ## Chemistry 3A

a titration required 18.38mL of 0.1574 M NaOH solution. how many moles of NaOH were in this volume?

143. ## Chemistry 3A

a student weighed out 1.106g of KHP. How many moles was that?

144. ## 1 last math question

3. Which of the following equations has an infinite number of solutions? 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)

145. ## Chemistry

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?

146. ## chem 101

how much heat is required to melt 25.6g of solid diethyl ether(at its melting point)

147. ## Algebra

Find the slope and y-intercept of the equation. y=mx+b y = (2-a)x + a

148. ## Spanish

Can u correctly write these sentences in Spanish,plz? 1. I'm very proud of my son. 2. He can spell his name backward and forward. 3. What's his name? 4. How much does a new car cost in America? 5. You must be very rich. If tried already this is wat I got,

149. ## physics help please!

The motion of a piston in an auto engine is simple harmonic. The piston travels back and forth over a distance of 23 cm, and the piston has a mass of 1.7 kg. 2515 rpm 23 cm max speed of the piston 30.28757 m/s What is the maximum force acting on the piston

150. ## Math

Writing in math Braden and bialy each bought a kazoo for \$0.89.they each paid with a \$1.00 bill. Explain two different ways to show their change.

151. ## math

There are 12 slices of pie if jerry ate 1/3 of the pie, how many slices did he eat?

152. ## Chemistry

Carburization" of pure iron (Fe) is carried out at 950∘ C. It is desirable to achieve a carbon content of 0.9% at a depth of 0.1 mm below the surface. A constant supply of carbon at the surface maintains a surface concentration of 1.2%. Assuming the

153. ## algebra

x^2+3+(1/10) How to factor that? plz help

154. ## Chemistry

An undesirable consequence of welding steel by acetylene torch is the rise in hydrogen concentration in the metal. That hydrogen contamination embrittles the steel. The metal is typically subjected to a vacuum heat treatment to restore ductility. A steel

155. ## Chemistry

You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

156. ## Chemistry

(a) Certain alloys such as LaNi5 can store hydrogen at room temperature. A plate of LaNi5 containing no hydrogen is placed in a chamber filled with pure hydrogen and maintained at a constant pressure. At what depth from the surface will the concentration

157. ## Chemistry

The Gaussian error function can be approximated for small values of x as erf(x)≈x. Suppose a silicon wafer is exposed to aluminum vapor at 1300∘ C. At what distance (in centimeters) will the concentration of Al be 35% of the surface concentration in

158. ## Chemistry

A p-n junction is obtained at a depth of 3×10−3 cm by diffusion of antimony (Sb) into p-type germanium. What is the acceptor concentration in the bulk Ge, if diffusion was carried out for three hours at 790∘ C? Given: Constant Sb surface concentration

159. ## Chemistry

To increase corrosion resistance, chromium is diffused into steel at 980∘ C. If the surface concentration of Cr is maintained constant at 100%, how long will it take (in days) to achieve a Cr concentration of 1.8% at a depth of 0.002 cm below the steel

160. ## Chemistry

A p-n junction is to be created by diffusing boron (B) into an n-type silicon wafer with an existing carrier concentration of 1015/cm3. The location of the junction will be 6μm below the surface of the wafer. The surface concentration of boron will be

161. ## science

what is symbiosis

162. ## CHEM !(MOLE) PLZ HELP!

1.How many grams are in one mole silicon? 2. how many moles are in 128 grams of oxygen gas (O2)? 3.How many molecules are in 2 moles of AIO? 4.How many moles are in 18.06 x 10 to the 23 power? 5. how many moles are in 100 grams of CH4?

163. ## math

A cylindrical container has a volume of 226 cubic inches. the container is filled 3/4 of the way with water. To the nearest cubic inch, what is the volume of water in the container? How many more cubic inches of water is needed to fill the container?

164. ## algebra

matching graphs inequailty

165. ## 3rd grade math

jake has an even number of counters. carlos has an odd number of counters. how many more counters do they need to divide the combined total into an even number of groups?

166. ## chem1 WORD PROBLEM!!

6. how many grams are in 4 moles of Be (OH)3? 7.How many atoms are in 4 moles of C6H12O6? 8.how many moles are in 12.04x10 23 to the power molecules of hamburgers? 9. how many molecules are in grams of Helium gas (He2)? hint:convert then moles then

167. ## math

Adraiana and kyle have the same number of counters. they combine them with terry's counters and divide the total into 3 equal group. if adriana had 9 counters, what is the least number of counters terry could have had

168. ## science

What is the difference in pitch and volme as race cars pass by the cmeras at the Indianapolis 500?

169. ## Chemistry

Using Dimensional Analysis One mole of sillicon has a mass of 28.1 g, and one mole of oxygen has a mass of 16.0 . What is the mass of one mole of sillicon dioxide.

170. ## math

A crew needs to pick up litter along one side of a section of highway that is 49.5 kilometers long. How many kilometers must the crew clean each day in order to finish the job in 5.5 days? A 0.11km B 0.9 km C 9.0 km D 11.2 km

171. ## English Comp

read Chapters 1 and 2 and your Instructor’s Guidance for Week One again, applying the Survey-Question-Read-Recite-Review (SQ3R) strategy as you reread the materials. Discuss how this reading strategy is similar to and/or different from the way you read

172. ## math

Solve: 1 2/8 x 2 1/9= A 2 10/36 B 3 11/36 C 4 5/36 D 2 23/36

173. ## English

I need help on this story it be called Invitations by Carol Shields, I not able to post story on here but if you go to google and type in search box : invitations by carol shields on monday she looked in her mailbox a books google search come up that be

174. ## Geometry

In tiangle ABC, centroid D is on the median line segment AM. AD=x+4 and DM=2x-4. Find AM.

175. ## Physics

The period of motion of an object-spring system is T = 0.474 s when an object of mass m = 296 g is attached to the spring. (a) Find the frequency of motion in hertz. _______Hz (b) Find the force constant of the spring. _______N/m (c) If the total energy of

176. ## physics

a car of mass m1800kg is pushed off a cliff of height h = 25.0m how long was the car in the air

177. ## Physics

A block of mass m = 2.00 kg is attached to a spring of force constant k = 5.15 102 N/m that lies on a horizontal frictionless surface as shown in the figure below. The block is pulled to a position xi = 5.75 cm to the right of equilibrium and released from

178. ## accounting

is returned purchased inventory considered as claims exchange(ce)?

179. ## math

greg has 2 quarters, 1 dime, and 3 nickles. Stan has 3 quarters, 2 dimes, and 2 nickles. how can they share the coins so that they both have the same amount of money?

180. ## Math

Elsa had a rubber disc that was red on one side and blue on the other. She tossed this disc 3 times. Draw a diagram showing all the possible outcomes she could get in 3 tosses of the same rubber disc 1st toss can be red or blue 2nd toss can be red or blue

181. ## GEOMETRY

In triangle ABC, centroid D is on the median line segment AM. AD=x+4 and DM=2x-4. Find AM.

182. ## Math

I am a number on the hundreds chart. The sum of my digits is 9. My tens digit is 4. What number am I?

183. ## physics

A heavy concrete panel is being lifted into position in a building by means of a crane . The tension of 2.17 104 N in the supporting cable produces a torque with respect to point O. (Let L = 42.0 m.)

184. ## math

(-u^-5v^2)^-1*u^3v

an auto manufacturer negotiates a deal to have its cars appear in a Hollywood film. This is an example of a. publicity b. product placement c. media placement d image exposure

186. ## MATH urgent

Hello!! 1. find the third derivative of f(t)=(t-1)/(t+1) 2. y= x^(x^2) ; dy/dx please help! thank you!

187. ## physics

A weather vane initially at rest has a moment of inertia of 0.119 kg · m2 about its axis of rotation. A 48.0 g piece of clay is thrown at the vane and sticks to it at a point 21.0 cm from the axis. The initial velocity of the clay is 23.0 m/s, directed

188. ## Math

Caitlin has a pink umbrella and a black umbrella. She has a pink jacket, a blue jacket, and a black jacket. Draw a diagram showing all the possible ways Caitlin can combine her jackets and umbrellas Pink umbrella pink blue or black jacket black umbrella

189. ## math homework

arrays and expanded algorithim 23.17

190. ## Math challenge

There are 3 circles divided into thirds with a number in each third. The 1st cirlcle has 18, 23 & 49. 2nd cirlce has 25, 62, 38. The 3rd cirlce has ?, 17 & 39. We need to figure out what number is missing from the 3rd circle, and how you figured it out.

An interstate highway has been built though a poor neighborhood in a city. In the afternoon, the sound level in a rented room is 114.0 dB as 172 cars pass outside the window every minute. Late at night, the traffic flow is only 7 cars per minute. (b) What

192. ## busines finance

A self-employed person deposit \$3000 annually into a retirement account that earns 8% interest. How much will he have in 25 years?

193. ## Chemistry 12

given the reacting system: H2 (G) + I2(G) ---> 2HI(g) Keq= 64 Equal moles of H2, I2, and HI are placed in a 1.0 L container. Use calculations to determine the direction the reaction will proceed in order to reach equilibirum

194. ## math

Find the area of the region under the graph of the function f on the interval [-27, -1]. f(x)= 2-3square root x ? square units

195. ## math

The quantity demanded x (in units of a hundred) of the Mikado miniature cameras/week is related to the unit price p (in dollars) by p = −0.2x2 + 80 and the quantity x (in units of a hundred) that the supplier is willing to make available in the market is

196. ## Accounting

Harris company borrowed 65,000 by giving 10 year , 6% installment note to Cuba Bank The note requires annual payments of \$8832 first payment occuring on the last day of the fiscal year. the first payment consists of interest of \$3,900 and principal

197. ## language

Churches best seats were reserved for members of the gentry.

4+9y-3>9y+6

199. ## Math

How do you set this up? Solve the system using substitution: A boat travels 18 miles downstream in 1.5 hrs. It then takes the boat 3 hrs. to travel upstream the same distance. Find the speed of the boat in still water and the speed of the current. Thanks

200. ## math

john saw 24 animal at a pet store 14 dogs and 3 hamsters. how many more animals should he see?

201. ## Calculus

A solid is formed by adjoining one hemisphere to the top of a cylinder. The total volume of the solid is V (treat as a constant) cubic centimeters. Find the minimum surface area of the solid in terms of V.

202. ## Physics

A baking dish is removed from a hot oven and placed on a cooling rack. As the dish cools down to 33° C from 181° C, its net radiant power decreases to 13.3 W. What was the net radiant power of the baking dish when it was first removed from the oven?

203. ## english

i have to write an essay on why should we have freee colllege education improvement in U.S.A. Why it is problem. Can u please give the reason.

204. ## ENGLISH

Many people are surprised to learn how __1__ poverty is __2__ America. Today millions live below the poverty line, and the number seems to escalate daily. Judy and Martin Reed exemplify the old saying, “Opposites attract.” A __3__ Judy chooses work

205. ## priciple of accounting

What effect does a debit memo in a bank statement have on the Cash account? What effect does a credit memo in a bank statement have on the Cash account? Ms. Sue

206. ## Chemistry 12

given the reacting system: H2 (G) + I2(G) ---> 2HI(g) Keq= 64 Equal moles of H2, I2, and HI are placed in a 1.0 L container. Use calculations to determine the direction the reaction will proceed in order to reach equilibirum

207. ## physics

A weather vane initially at rest has a moment of inertia of 0.119 kg · m2 about its axis of rotation. A 48.0 g piece of clay is thrown at the vane and sticks to it at a point 21.0 cm from the axis. The initial velocity of the clay is 23.0 m/s, directed

208. ## Algebra

While playing marbles, your first opponent won half your marbles plus 4 marbles. You lost half of what was left plus 3 marbles to your second opponent, You lost half of what was then left plus 2 more to the third opponent and your fourth opponent won your

209. ## Socialstudy

If u visit a shaker village today what will you see and do ?

210. ## Physics

A block of mass m = 2.00 kg is attached to a spring of force constant k = 5.15 102 N/m that lies on a horizontal frictionless surface as shown in the figure below. The block is pulled to a position xi = 5.75 cm to the right of equilibrium and released from

211. ## math perimeter

susans garden fence goes around the entire garden.the fence is a quadrilateral.all of the sides are equal in lenth.one side measures 15 cm. what is the perimeter of the garden

212. ## English - ms. sue

Ms. Sue, my sister write out story here it is. On Monday she looked in her mailbox, although she had no reason to expect a letter so soon. But there it was, a small, square car. She held it in her two hands, testing its weight. It was an invitation to an

213. ## Physics URGENT!!!

A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 59 dB by an observer 14 km away. (a) What is the average power generated by the horn? (b) What intensity level of the horns sound is observed by someone

214. ## math

What does 1/8 + 1/2 + 3/4 equal to?

215. ## Social Studies

I don't have an atlas and I need help finding the location. I need the nearest city and the country that it's in. Thank you. 1. 31° s, 64° w 2. 13° s,71° w 3. 16° s, 68° w

216. ## chemistry

My chem book gives me the following Hess' Law example: Mg + 2HCl --> H2 MgCl2 Delta H1 MgO +2HCl --> H2O +MgCl2 Delta H2 H2 + 1/2 O2 --> H2O Delta H3=-68.3kcal The desired reaction is the formation reaction of MgO as follows: MgS +1/2 O2 --> MgO Delta H

217. ## physice

A deep-sea fisherman struggles to bring in a big salmon (see figure below). Find the force each hand must exert on the pole if the tension in the line is 155 N. Neglect the weight of the pole and assume that the force exerted by the left hand is directed

218. ## Algebra 1

Can you help me set this up? Suppose you are trying to decide whether to buy ski equipment. Typically it costs \$60 day to rent skis and buy a lift ticket. You can buy ski equipment for about \$400. A lift ticket alone costs \$35 for one day. Find the

219. ## math

Find quotient of 3.94/1,000

220. ## physics

A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m (

221. ## math

what is three less than 11 times a number is the same as the number decreased by 13. find the number

222. ## Math

Marty is a cheerleader. His school colors are red,white,and blue. Marty's uniform consists of a red sweater and a blue sweater/ He has 3 pairs of uniform pants: one red one white and one blue. Draw a diagram showing all the possible ways Marty can combine

223. ## physics

A 1.00 x 10^3 kg sports car accelerates from rest to 25.0 m/s in 7.50 s. What is the average power output of the automobile engine?

224. ## chemistry

In the following reaction, how many grams of ferrous sulfide (FeS) will produce 0.56 grams of iron (III) oxide (Fe2O3)? 4FeS + 7O2 d 2Fe2O3 + 4SO2

A 3.00-kHz tone is being produced by a speaker with a diameter of 0.185 m. The air temperature changes from 0 to 29° C. Assuming air to be an ideal gas, find the change in the diffraction angle θ.

226. ## math

What is the surface area of a cube with a volume of 81cm3?

227. ## Math

Alicia had 2 1/2 yards of ribbon. She used 1/3 of the ribbon on the costume and 25% on a bracelet. How many yards did she use?

228. ## Math

3 1/7 - 1 3/7=1 5/7?

229. ## Math

1) what is the length of the diagonal of a square whose sides are 3 inches long. A. 9 inches B. 3 square root 2 inches**** C. 6 inches D. 18 inches 2) which set of measure could be the side lengths of a right triangle? A. 0.9 cm, 1.2 cm, 1.5 cm B. 4 in, 4

230. ## Math

Use the substitution method to solve the following system of linear equations: x + y = 6 x = –y + 2 A. There are an infinite number of solutions. B. The solution is (2, 4). C. The solution is (4, 2). D. There is no solution.

asked by Help!!!!!!!!!!!!!! Fast its urgent Please!!!!!!!!!
231. ## Math

Which of these prices is lower than 5 for 3 dollars?

232. ## Math

1) Solve equation 3r+5 _____ + 2 = 2r to find the value of r? 2 A. 2 1/7 B. 3 2/3 C. 15 D. 10 2) which is these is a rational number. A. Sq root of 14 B. -sq root of 9 C. -sq root of 34 D. Sq root of 72

233. ## Physics

Which results in a higher force of impact? Assume both collisions are completely inelastic (your car comes to a stop) and both take the same amount of time. A) Running your car at 20 mph into a solid wall B) Running your car head-on at 20 mph into an

234. ## physics

A 417 kg pig is standing at the top of a muddy hill on a rainy day. The hill is 100m long with a vertical drop of 37.4 m. If the pig slips and begins to slide down the hill, assuming a negligible amount of friction what will be the pigs speed at the bottom

235. ## Physics

Which results in a higher force of impact? Assume both collisions are completely inelastic (your car comes to a stop) and both take the same amount of time. A) Running your car at 20 mph into a solid wall B) Running your car head-on at 20 mph into an

236. ## math

Which of the following statements is true? A. all trapezoids are similar B.all isosceles triangles are the same C.all rectangles are similar D.all equilateral triangles are similar

237. ## Math

Craftsmen install 500 sq ft of ceramic tile and 100 sq ft of vinyl tile in one day. An apprentice installs 100 sq ft of ceramic tile and 200 sq ft of vinyl tile in one day. The firm has a job that requires 2000 sq ft of ceramic tile and 1600 sq ft of vinyl

238. ## Math

Which of these is an irrational number? A.. Sq root of 14 B. -sq root of 9 C. -sq root of 34 D. Sq root of 72

239. ## Math

2) which set of measure could be the side lengths of a right triangle? A. 0.9 cm, 1.2 cm, 1.5 cm B. 4 in, 4 in, 4 in C. 7 m, 8m, 9m****** D. 2ft, 3ft, 4ft

240. ## possesive nouns

The sister of Miguel woke him up

241. ## physics

In a popular amusement park ride, a rotating cylinder of radius 2.90 meters is set into rotation with a period of 2.28 seconds. The floor then drops away, leaving the riders suspended against the wall in a vertical position.

242. ## Math

Craftsmen install 500 sq ft of ceramic tile and 100 sq ft of vinyl tile in one day. An apprentice installs 100 sq ft of ceramic tile and 200 sq ft of vinyl tile in one day. The firm has a job that requires 2000 sq ft of ceramic tile and 1600 sq ft of vinyl

243. ## Math

A rectangle is 6 cm long and 5 cm wide. When each dimension is increased by x cm, the area is tripled. Find the value of x.

244. ## MATH

6. A computer company has two manufacturing plants, one in Rochester and one in Queens. Transporting a computer from Rochester to the retail outlet takes 15 hours and costs \$15, while transporting a computer from Queens to the retail outlet takes 20 hours

245. ## spanish

Can someone please proof-read what I have so far on my Spanish essay for finals? Here it is so far: Antes de ver al aeropuerto, es importante confirmer el vuelo. Haces la maleta con ropa para tus vacacion. Cuando llegas el areopuerto, recibes la tareta de

246. ## western michigan university

A 30 gram metal at 100 degrees Celsius was dropped into 132 grams of water at 25 degrees Celsius and the final temperature for the metal in water system was 29 degrees Celsius. Calculate the specific heat capacity of the metal if the specific heat capacity

247. ## western michigan university

1050 calories of heat from soybean oil was applied to a 250 gram sample of liquid water with an initial temperature of 25 degrees Celsius. Determine (a) the final temperature of water and (b) the change in temperature.

248. ## physics

A box slides down a 33.3 ◦ ramp with an acceleration of 1.07 m/s 2 . The acceleration of gravity is 9.8 m/s 2 . Determine the coeﬃcient of kinetic friction between the box and the ramp.

249. ## western michigan university

2.5grams of pecan nut was turned to heat up 100grams of water at 24 degrees Celsius. The final temperature after all the pecan oil in the nut was completely consumed was 70 degrees Celsius. Calculate the (a) energy released by the 2.5 gram pecan in

A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m (

251. ## Ideas/ newsworthy

Hi I'm trying to conduct a video for this new group we have on our campus called the Secular Student Alliance.. it's essentially an atheist group where they meet you share their beliefs.. Any ideas on questions I could ask them about their group that the

252. ## College Chemistry

Is .1M NaH2PO4 a good buffer? Explain.

253. ## Math

When (5x^6+10x^5+2x^4+19x^3+2x^2+1)^10000 is multiplied out, what is the coefficient of x^4?

254. ## Chemistry

Assume that a particular reaction evolves 230 kJ of heat and that 28 kJ of PV work is gained by the system. What are the values of delta E and delta H for the system? For the surroundings?

255. ## Chemistry

combustion analysis of 63.8 mg of C,H, and O containing compound produced 145.0 mg of CO2 and 59.38 mg of H2O. What is the empirical formula for the compound?

256. ## Chemistry

What element is undergoing oxidation (if any) in the following reaction? CH4(g) + 2 O2(g) ¨ CO2(g) + 2 H2O(g)

How does Pythagorean theorem help to classify other triangles?

asked by Maryam :)
258. ## Chemistry

Determine the volume of H2S (at 375 K and 1.20 atm) needed to produce 55.0 g of S. Assume that there is excess SO2 present. 2 H2S(g) + SO2(g) ¨ 3 S(s) + 2 H2O(g)

259. ## Chemistry

Which of the following compounds can exhibit cis-trans isomerism? A) [Fe(CO)5ONO]2+ B) [Fe(CO)3(NH3)3]3+ C) [Cu(CO)5Br]+ D) [Cr(H2O)4Br2]+ E) [Fe(NH3)6]2+

260. ## Chemistry

The complex ion, [Ni(NH3)6]2+, has a maximum absorption near 580 nm. Calculate the crystal field splitting energy (in kJ/mol) for this ion.

261. ## chemistry

Choose the bidentate ligand from the substances below. A) cyanide ion B) ammonia C) EDTA D) carbon monoxide E) ethylenediamine

262. ## Chemistry

How many atoms of carbon are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.

263. ## Chemistry

The temperature rises from 25.00 °C to 29.00 °C in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. Calculate ÄErxn for the combustion of sucrose in kJ/mol sucrose. The heat capacity of the calorimeter is 4.90 kJ/°C

264. ## science

the columbian exchange during the age of discovery

265. ## Chemistry

The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

266. ## grammar

What is the simple subject in this sentence Who cares if she's in 3rd grade and I'm just in 1st.

267. ## calculus

a woman throws a ball vertically upwards so that 4seconds elapse before it strikes the ground. Determine the maximum height of the ball and the velocity with which the ball was thrown. Assume that the acceleration due to gravity is 10m/s squared and

268. ## math

The quantity demanded x (in units of a hundred) of the Mikado miniature cameras/week is related to the unit price p (in dollars) by p = −0.2x2 + 80 and the quantity x (in units of a hundred) that the supplier is willing to make available in the market is

269. ## SCI/275

Compare and contrast the western world view with the deep ecology world view. Challenge one of the world views presented in Visualizing Environmental Science. Which world view is closest to your own? Why?

270. ## Math

Which is the side length of a square with an area of 144 ft squared? 36, 72, 12 or 18 ft.? Is it 12?