# Questions Asked onOctober 30, 2010

1. ## Chemistry

A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mmHg and the partial pressure of the oxygen is 1.02 atm, what is the total pressure of the mixture in torr?

asked by Pat
2. ## Physics - Mechanics and Ocsillatory Motion

The force shown in the figure acts on a 1.7-kg object whose initial speed is 0.44 m/s and initial position is x = 0.27 m. the figure can be found at: [[webassign dot net forwardslash walker forwardslash 07-16 dot gif]] (a) Find the speed of the object when

asked by Sara
3. ## physics

a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?

asked by Ashleigh
4. ## physics

A force of 5.00 N to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s2 to the left. What is the frictional force acting on the book?

asked by lisa
5. ## chemistry

How many moles of Cu are needed to react with 3.50 moles of AgNO3?

asked by Randy
6. ## 10th grade

BC=3x+2 and CD= 5x-10. Solve for x.

asked by jj
7. ## physics

A man swims across the river with a velocity of 2 m/s relative to the flow of water. If the river flows steadily at 4 m/s toward south, what is the velocity of the man with respect to the shore? Solve for both the magnitude and the direction (in degrees).

asked by HASANNY
8. ## Chemistry

When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpacking trip and will need to boil 40L of water for your group. What volume of fuel should you bring? Assume each of the

asked by Anonymous
9. ## physics

A grinding wheel 0.40 m in diameter rotates at 2200 rpm. What is the acceleration of a point on the edge of the grinding wheel?

asked by Eden
10. ## chem--please help me!!

when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 12.5 mL; pH=3.80 please help me explain in details!!!

asked by Sue
11. ## physics

in a tug of war a jeep of a mass 1400kg and a tractor of a mass of 2000kg pull on a horizontal rope in opposite directions. at one instant, the tractor pulls on the rope with a force of 1.50*10^4N while its wheels push horizontally against the groud with a

asked by jack
12. ## MINIMIZATION PROBLEM (CALC)

A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total

asked by Pierre
13. ## Chemistry

How many electrons in an atom can have each of the following quantum number or sublevel designations? 1. n = 4, l = 3

asked by Chris
14. ## physics

A 44 m diameter wheel accelerates uniformly about its center from 110 rpm to 320 rpm in 3.9 s. Determine the radial component of the linear acceleration of a point on the edge of the wheel 1.0 s after it has started accelerating.

asked by Eden
15. ## science

Using what you learned about science in your coursework thus far, discuss: 1. Why you think scientists probably want to leave what they do open to revision. 2. What are the hard-and-fast rules of science? Are there any? 3. With so few firm rules, how does

asked by ca
16. ## Chemistry

NaI(aq)+Hg(C2H3O2)2(aq) complete and balance complete equation

asked by Lisa
17. ## Finance

shley is planning to attend college when she graduates from high school 7 years from now. She anticipates that she will need \$10,000 at the beginning of each college year to pay for tuition and fees, and have some spending money. Ashley has made an

asked by John
18. ## chemistry

describe how would you prepare exactly 500. ml of 1.0 M NaOH solution from a 3.0 stock NaOH solution . show all calculation

asked by hadil
19. ## Physics - Charge on sphere (check + help)

Two 2.0g spheres are attached to each end of a silk thread 1.20m long. The spheres are given identical charges and the midpoint of the thread is then suspended from a point on the ceiling. The spheres come to rest in equilibrium, with their centers 15cm

asked by Farah
20. ## Earth Science

What are the minimum and maximum durations of daylight at a latitude of 39 degrees north? Thanks.

asked by Anon
21. ## Inter

19) The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable marketing mixes is called: A. Market research. B. Market development. C. Market penetration. D. Market segmentation.

asked by Siamara
22. ## physics

what force is required to make an object of mass 500g accelerate at 4m/s2 (sqaured) ?

asked by annia
23. ## chemistry

what is the reaction equation when maleic anhydride is combines with granular zinc and HCl propose structures for the products you would obtain by treating fumaric acid, cinnamic acid, and butynedioic acid with zinc and HCl. write balanced equations for

asked by anon
24. ## algebra

percent means hundredth true or false?

asked by S
25. ## MINIMIZATION PROBLEM (CALC)

A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total

asked by Pierre
26. ## chemistry

Please let me know if my equation is correct,taken from the following word problem. If you react Iron(111)oxide with carbon monoxide,you will produce liquid iron and carbon dioxide. Fe2O3 + CO --> Fe + CO2. If I'm correct..how do I balance this. Thanks for

asked by Cliff
27. ## STATS

Police records in the town of Saratoga show that 18 percent of the drivers stopped for speeding have invalid licenses. If 16 drivers are stopped for speeding (a) Find the probability that none will have an invalid license. (Round your answer to 4 decimal

asked by Helen
28. ## algebra

For 1983 through 1995, the amount of private donations D (in millions) allocated to education can be modeled by D= 1.78t^3-6.02t^2+ 752t+ 6701 where t is the number of years since 1983. In what year was 14.3 billion of private donations allocated to

asked by Nick
29. ## math

the 6th term of Gp is 2000.find its first term if its commom ratio is 10.

asked by hawkland
30. ## Accounting

The rent payment made on June 17 was for June, July, August and September. Expense the amount associated with one month's rent.

asked by Sam
31. ## History

What are some similarities between Hammurabi's codes and the Tang Dynasty's 10 Abominations? Thank you!

asked by Lilu
32. ## Geometry

Suppose PQR RST. Which congruency statement of the two triangles is not equivalent to the others

asked by Dayja
33. ## Chemistry--help me, please

how would you separate Fe3+ from Ba2+ in a mixture? Please explain and give an equation for reaction.

asked by Rocio
34. ## psychology

Now imagine that you are conducting research on the length of time it takes customers to select items in a grocery store. Assume that your hypothesis is that people will spend more time deciding on more expensive items than on cheaper items. • What might

asked by krystal
35. ## Physics kinetic energy

Okay the equation for kinetic energy is = 1/2mv^2 so how would i figure this out?? If a semi-truck decreases its speed from 10 m/s to 5 m/s, its new Kinetic Energy is: a)4 times its old Kinetic Energy b)2 times its old Kinetic Energy c)1/2 its old Kinetic

asked by Aisumi
36. ## STATS

At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.60 per day on a typical Wednesday. Let X be the number of cancellations on a particular Wednesday. a) What is the probability that no cancellations will occur on a

asked by Helen
37. ## Criminal Justice

Write a 700 to 1000 word paper in which you explain comonents of the criminal justice system and the criminal justice process. In your paper, be sure to include the definition of crime, it's relationship to the law, and the government structure as it

asked by Maria Suter
38. ## STATS

The probability of a manufacturing defect in an aluminum beverage can is .00003. If 100,100 cans are produced, (a) Find the approximate probability of at least two defective cans. (Round your answer to 4 decimal places.) (b) Find the approximate

asked by Helen
39. ## Physics

A hot-air balloon has a total mass of 720 kg. It accelerates downwards (towards the ground) at 2.7m/s^2 even though an upwards lift force in acting on it. Find a:Find the lift force acting on the balloon B)What must be the total mass that needs to be

asked by applebottom
40. ## physics

A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 2 m/s^2. If the student uses a force of 15 N, what is the coefficient of kinetic friction of the floor?

asked by HASANNY
41. ## The Crucible Crossword Puzzle question

The question is: Thomas Putnam was this about his situation in life. There are 6 letters and the first letter starts with a b and the second to last letter starts with an e. I'm not sure what it is though can you help? Thanks

asked by Missy
42. ## psychology

An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the: hypothesis. dependent variable. independent variable. correlation coefficient.

asked by cindy
43. ## algebra

Company A charges \$55 per day plus \$0.35 per mile to rent a car. Company B charges \$50 per day plus \$0.40 per mile. Jack wants to rent a car for three days. How many miles should Jack be traveling so that Company A is less expensive than Company B?

asked by franklin
44. ## AP Government(Research question so not really)

I am supposed to make an annotated bibliography for all the research I have done for my history fair project. Thing is I don't know how to make an annotated bibliography and I have looked up examples and I am not sure if you can do it with 50 sources. I am

asked by Pablo
45. ## math

What is the opposite of 10?

asked by Suzanne
46. ## math

i am a decimal with my last digit in the hundredths. rounded to the nearest tenth. I am 6.5. Rounded to the nearest whole number. I am 6. if the sum of my digits is 16. what number am i?

asked by alice
47. ## Physics

I have a 250- turn circular coil of wire, 0.10 m in diameter, perpendicular to a 0.050 T magnetic field as shown below. I flip the coil 180 degrees in 1/30 of a second. What is the average voltage created across the ends of the coil? A. -6.0 V B. -12 V C

asked by Jessica
48. ## Physics-Kinetic energy

Two 2.0 g bullets are fired with speeds of 40.0 m/s and 80.0 m/s, respectively. What are their kinetic energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies? A car has kinetic enery of 4.32* 10^5 when traveling at a

asked by Pablo
49. ## eng physics

in a downhill race a skier slides down a 40 degree slope. starting from rest how far must he slide down the slope to reach a speed of 130 km/hr. ignore air friction and assume the co effiecnt of kinetic friction between skies and snow is .1

asked by anthony
50. ## physics

What must the water pressure be to supply water to the third flor of a buiking 35.0 ft up with a pressure of 40.0 lb/in(2) at that level? I have the answer,but I need to know how to get the answer. thanks

asked by Eileen
51. ## STATS

In a certain store, there is a .05 probability that the scanned price in the bar code scanner will not match the advertised price. The cashier scans 820 items. a) What is the expected number of mismatches and standard deviation? (Round your expected number

asked by Helen
52. ## Statisitcs

Suppose that X and Y are independent discrete random variables and each assumes the values 0,1, and 2 with probability of 1/3 each. Find the frequency function of X+Y.

asked by Jade
53. ## physics

A 30 kg block slides down a 20° ramp with an acceleration of 1.2 m/s2. What is the coefficient of kinetic friction between the block and the ramp?

asked by HASANNY
54. ## math

what is ment by the "discriminant"

asked by Jim
55. ## Chemistry

Calculate the amount of NaH2PO4 and Na2HPO4 needed to prepare 100 mL of a buffer with a pH = 8.25 so that the sum of concentrations of HPO4 and H2PO4 ions is 0.5 M. Where do I start? :/

asked by Anonymous
56. ## Chemistry

4al(s)+3o2(g)---->2o3(g) limiting reactant 7.4 mol Al or 6.5 mol O2

asked by Lisa
57. ## 11th grade AP Chemistry

Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that

asked by derek
58. ## finance

Home Builder Supply a retailer in the home improvement industry, currently operate seven retail outlets in GA and SC. Management is contemplating building an eighth retail store across town from its most successful retail outlet. The company already owns

asked by michella
59. ## Gr.12 ENGLISH

what are some major themes in the short story "The Storyteller" by H.H Munro(also known by pen name Saki) pleaseee help thanx :)

asked by niini
60. ## Chemistry

42. Tell the function of the moderator and control rods in a nuclear reactor. I found this answer on google..is it correct? The function of the moderator is to slow down the neutrons produced by fission to greatly increase the probably that they will go on

asked by mysterychicken
61. ## arithmetic

The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence? 14/13 25/7 4

asked by Shawntrell
62. ## Physics

An object's moment of inertia is 1.8 kg\,m^2. Its angular velocity is increasing at the rate of 3.4 rad/s^2. What is the torque on the object?

asked by mike
63. ## AP Physics

a 45 kg object slides down an uneven frictionless incline from rest without rotating. What is its speed after it travels 2.5 meters vertically

asked by Asim
64. ## science

what is the mass of a falling rock if it hits the ground with a force of 147 newtons

asked by Anonymous
65. ## physics

An object was dropped from the top a tall building. During the last two seconds of the fall in traveled 80m. A) Find the total time of the fall. Assume that the gravitational acceleration is a constant 10m/s and air resistance is negligible. B) Calculate

asked by Tereza
66. ## calc 2

Find the derivative. f(x) = x2 · log7(x) Give your answer using the form below. xA(B + C logD(x))

asked by Anonymous
67. ## Earth Science

What causes the intensity and duration of solar radiation received at any place to vary throughout the year?

asked by Anon
68. ## economics

Teddy Bear, Inc., a rapidly growing manufacturer of high fashion children's shoes, plans to open a new production facility in Gastonia. Based on information provided by the accounting department, the company estimates fixed costs of \$250,000 per year. Its

asked by hiten
69. ## STATS

The fracture strength of a certain type of manufactured glass is normally distributed with a mean of 575 MPa with a standard deviation of 17 MPa. a) What is the probability that a randomly chosen sample of glass will break at less than 575 MPa?(Round your

asked by Helen
70. ## Chemistry

5. The products are the materials used in the reaction.- T? 28. Alloys are a. elements b. compounds c. mixtures A 30. An example of a colloid solution is a. salt water b. dirt mixed with water c. smog C 31. Gases dissolve better a. when pressure is

asked by mysterychicken
71. ## Physics - Spring balls

A 275g ball is resting on top of the spring that is mounted on the floor. You exert a force of 325N on the ball and it compresses the spring 44.5cm. If you release the ball from the position, how high above the equilibrium position of the spring-ball

asked by Farah
72. ## psychology

Jeff says, "It seems like the more money people make, the more debt they assume," but a/an __________ study might make the case that a rise in income does not by itself cause an increase in debt. criterion validity case experimental correlational I chose

asked by karl
73. ## US Hist

How did the Seven Years' War lead to the American Revolutionary War?

asked by Katelyn
74. ## physics

A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?

asked by Jay
75. ## stats

In order to make sure that their bags of chips are of sufficient weight, the Chipper Chip Company try to fill their 200 gram bags of chips with more than 203 grams. You have been given the task of investigating what proportion of bags produced do have over

asked by lollzzz
76. ## Chemistry

Give your answer as an ordered set of numbers , , , ... Use the least possible integers for the coeffiients Consider the following unbalanced equation for the neutralization of acetic acid: HC2H3O2(aq)+Ba(OH)2(aq)=H2O(l)+ this has the werid sybols and I

asked by Lisa
77. ## English

1. He gets up at six-thirty every morning. 2. He gets up at six thirty every morning. (Which one is right? Do we have to use a hyphen or not?)

asked by rfvv
78. ## Halloween

It's saturday and halloweens tomorrow. But I was wondering is trick or treating sopost be today or tomorrow? I've heard peolple going today and many people say tomorrow. I know sunday is an school night and some people wiill be at church. I have no idea if

asked by HELP
79. ## Chem

How do I go about solving this reaction? H2SO4 + NaCO3 = NaSO4 +CO2 + H2O If 150.0g of sulfuric acid is spilled, what is the minimum number of sodium carbonate that have to be added to complete the reaction?

asked by Sheff
80. ## History

By the end of 1863, what was the general feeling about the war in the South?

asked by .....
81. ## CHEM

Arrange the following in order of increasing atomic radius : Co, Mo, S, Ge, Cs

asked by MAX
82. ## english

Thanks for the help on putting up fence. I need help with starting general information (Background on illegal immigration& putting fence) How can I start with the background information on putting up fence? is it approiate using "THey or It is said? I just

asked by Kelly
83. ## Calculus

verify that the function satisfies the three hypotheses of rolle's theoreom on the given interval then find all numbers c that satisfy the conclusion of rolle's theorem. 1) 5-12x+3x^2 [1,3]

asked by Anonymous
84. ## algebra

How do i solve 3x+(2x-5)= 13-2(x+2)

asked by yesenia
85. ## Earth Science

If the date was March 22 and one saw the noon sun at 35 degrees south above the horizon, what latitude is one at?

asked by Casey
86. ## physical

I have no idea what does this have to do with physics but hope you can explain... A passenger on a bus moving east sees a man standing on a curb. From the passenger's perspective, the man appears to be... a)stand still. b) move west at a speed that is less

asked by Aisumi
87. ## fin 571

(Interest-rate risk) Philadelphia Electric has many bonds trading on the New York Stock Exchange. Suppose PhilEl’s bonds have identical coupon rates of 9.125% but that one issue matures in 1 year, one in 7 years, and the third in 15 years. Assume that a

asked by sam
88. ## math

find the constants a, b and c such that or all values of x, 3x^2 - 5x + 1 = a(x+b)^2 +c also whats the coordinate of the minimum point??

asked by Jim
89. ## Physics

Number 10 aluminum wire (radius= 1.3 mm) is commonly used for electrical installations in homes. What is the voltage drop in 20 m of this wire if it carries a current of 10 Amps? The bulk resistivity of aluminum is 2.7*10^-8 Ohm*m A) 1.3 V B) 1.9 V C) 1.0

asked by Jessica
90. ## To debbie: business math

You've posted at least 25 business math questions in the last couple of days, with no indication of your own efforts. In addition you ignored my request to respond to the requests we made to your early posts. As I told you yesterday, until you respond to

asked by Ms. Sue
91. ## Business

No one can predict a natural disaster or world crisis, when a hurricane, flood, or a pandemic strikes a country, who is most likely to respond first? Which economicsystem is the best solution to handling a crisis of epic proportion?

asked by Rhonda
92. ## Chemistery

How much heat is contained in 4 liter of liquid methanol (CH2OH) when it is completely combusted (excess oxygen) to form carbon dioxide and water. the density of metanol is 0.7918 g/ml.

asked by Lin
93. ## physics

What is the radial acceleration of an object at a point 25 meters from the axis of rotation that has a radius and a period of .22 seconds?

asked by Asim
94. ## Math

What is the percentage increase from 132 million to 153.1 million?

asked by Tykrane
95. ## Physics

The Earth's magnetic field above the Earth's equator is about 10^-4 north. If a proton is intially moving downward at 5*10^5 m/s, it will? A. curve east, making a circle with r= 50 m. B. curve west, making a circle with r=50 cm C. curve east, making a

asked by Jessica
96. ## math

Solve each proportion. Where necessary, round to the nearest tenth. 4/3 = b/21 I know b=28 do I round to the nearest tenth or what?

asked by Lilly
97. ## crt-205

can someone help to indentify fallacies and rhetorical devices in this article? The government's 2008 banking bailout is a fraud perpetrated on the American people. The government has abandoned sound money practices in favor of allowing the Federal

asked by joe
98. ## Math

What is the propability that a random sample of 30 days in august has a mean high tempature less then 78 degreese?

asked by Sherrie
99. ## physics

What is the wavelength of a proton traveling at a speed of 6.87 km/s

asked by joshua
100. ## psychology

It is the proper role of a psychological research scientist to: question data. make safe predictions. keep research methods accessible only to those involved in the research. avoid making predictions.

asked by karl
101. ## communication

What are some ways to save and store your personal financial information?

asked by mahogany
102. ## History

You do not need to gain approval for your role. Choose the one you want and start working on the assignment Write a 700- to 1,050-word paper, written from the perspective of your chosen role, that addresses how each of the following factors may affect your

asked by Chantell
103. ## psychology

One advantage of using tests in research, rather than laboratory observation, is the usefulness of: the presence of the researchers, which increases the reliability of the results. describing behavior, rather than explaining it. tests in clarifying the

asked by karl
104. ## chemistry

I'm kind of having difficulty with a question involving dimensional analysis. I'm confused how I would convert some units into others and what to divide. Here's the question. One 5lb Hershey's kiss is equivalent to how many little Hershey's Kisses? (1

asked by Nick
105. ## com156

How might you determine what is fact and what is opinion? Does the opinion of an expert in the field carry more weight than the opinion of someone that is not? Explain why or why not

asked by Anonymous
106. ## Science

I need to describe what a standard operating procedure is and what procedures it may involve. Thankyou.

asked by paul
107. ## physics

A package of medical supplies is released from a small airpllane flying a mercy mission over an isolated jungle settlement. The plane flies horizontally with a speed of 20 m/s and an altitude of 20 meters. How far from the release point will the package

asked by Casey
108. ## bussiness management

For this discussion use the Critical Thinking Process to analyze the problem-solving the individuals may apply in the case study, "Elective Surgery Department Faces Decreased Patient Satisfaction." Share your chosen role and your role's ideas for the

asked by jessica
109. ## CHEM

What is the abbreviated electron configurations of : a) MO 4+ b) As 3- c) S 2- D) NI 2+

asked by MAX
110. ## English

1. On Christmas, children usually get gifts from their parents. 2. At Christmas, children usually get gifts from their parents. (Which preposition do we have to use before 'Christmas'? Are both OK? Which one is generally used?)

asked by rfvv
111. ## ALgebra

the difference of two numbers is 5. three times the smaller number is two more than twice the larger number. find the numbers

asked by mike
112. ## Precalculus

1.Find the third term of the expansion of the given expression. (a+b)^6 2.se the Binomial Theorem to expand and (where possible) simplify the expression. (c-d)^8

asked by Mary
113. ## Organic Chemistry

what is wrong with the idea that the reaction of maleic acid with zinc and aqueous HCL would yield tetrahydrofuran?

asked by Melody
114. ## statistics

A large bank believes that one-third of its checking customers have used at least one of the bank's other services during the past year. How large a sample is required to estimate the actual proportion within a range of plus and minus 0.04? Use the 98

asked by yoli
115. ## axia crt/205

can someone help me to identify the fallacies and rhetorical devices in this article? While the U.S. government's 2008 bailout of failing banks flies in the face of the nation's capitalist principles, it is a necessary evil. Without shoring up these

asked by joe
116. ## psychology

Random assignment can be described as a research method: used to balance the independent and dependent variables. no longer used because of its unpredictability. increasing the likelihood that the experimental group and control group will be different.

asked by cindy
117. ## English

Can someone check my answers for me. We're learning about commas...did I put them in the right places. 1. Pottery provides important archaeological artifacts for it is abundant, identifiable, and well preserved. 2. Yes, I do think that I must stop

asked by Jessica
118. ## ethics

what measurements sociologists utilize to calculate prejudice?

asked by Anonymous
119. ## math

the function, p(d)=1+d/33, gives the pressure, in atmospheres (atm) at a depth in the sea (d is in feet). note that p(0)=1 atm, p(33)=2 and so on. find the pressure at 10 feet

asked by kiki83
120. ## physics

on a level road the stopping distance for an automobile is 35.0m for an initail speed of 90 km/hr what is the stopping distance of the same automobile on a simalr road with the slope 1:10

asked by hilde
121. ## Calculus

I have trouble finding the second derivative, my answer is a little off from the answer key. f(x)=(log(base2)x)^5 f'(x)=[5(log(base2)x)^4]/xln2 f"(x)=[20(log(base2)x)³(xln2)-(ln2+(x/2))(5(log(base2)x)^4)]/[x²(ln2)²] for the f"(x), is g(x)=xln2? It is a

asked by sh
122. ## algebra

Write 48/56 in simplest form

asked by Anonymous
123. ## Math

An adult crocodile weighs up to 2200 lbs. If a young crocodile weighs 157 lbs, how many pounds might it be expected to gain in it's lifetime? How do you write a word sentence that describes the inequality situation?

asked by Sally
124. ## statistics

A Math class has 5 students. Their marks on the first quiz was as follows: 1 3 3 4 4 Find the standard deviation

asked by medo
125. ## Computer

What is the work of mobile phones?

asked by Meron
126. ## History

what were the signifiance of the seven day battle?

asked by Cierra
127. ## chemistry

If 150.0 f of sulfuric acid is spilled, what is the minimum number of moles of sodium carbonate have to be added to complete reaction

asked by rose
128. ## chemistry please help

What is the energy (in J) of a photon of ultra-violet light that has a wavelength of 252 nm? The units for the answer are Joules. The error interval is 5%. I did the problem and i got 7.893E-37 did i do correct or was i close

asked by Anthony
129. ## 8th grade

exponential growth is stopped when equals

asked by Anonymous
130. ## Math

Use algebra to determine the location of the vertical asymptotes and holes in the graph of the function. (Enter your answers from smallest to largest.) g(x)= 2x^2/x^4-x^2

asked by Raymone
131. ## Algebra 1

Nico drives from school to the store at 25 miles per hour. He drives back to the school (along the same route) at 35 miles per hour, and the returns to the store (via the same route) travelling at 40 miles per hour. Find the average rate for the three

asked by JK
132. ## math

Need help solving this algebraic complex fraction please. a+3/b ------ b+3/a I know LCM= is ab but then i get stuck

asked by Anonymous
133. ## English

1. Many animals are dying. 2. Many animals are dying out. (What is the difference between the two sentence? What is the meaning of 'out' in Sentence 2?)

asked by rfvv
134. ## Calculus

Do points of inflection have to be defined in the original function?

asked by Jess
135. ## Health Information Management Technology

You have a backlog in medical records and deliquent records. How would you address each of the identified problems?

asked by Johnnie
136. ## math

calculate the discriminant of 3x^2 - 4x + 2

asked by jake
137. ## Calculus

Find the area of the enclosed by the y-axis and the curves y=x^2 and y=(x^2+x+1)*e^(-x). ...I'm supposed to use tabular method to find the area. But I'm not sure where to start with this question. I drew the graph for y=x^2, but that's about it. Help!

asked by Anonymous
138. ## psychology

To gain acceptance, a hypothesis must be: suggested by a credible authority. kept secret until the research is completed. imaginative and appealing. backed by empirical evidence

asked by karl
139. ## ALgebra

the difference of two numbers is 7. the larger number is 9 less than 3 times the smaller. find the numbers

asked by mike
140. ## medical terminology

dr hammer has scheduled a patient for chemotherapy. the patient had a mastectomy on june 1, 2000. Chemotherapy used after surgery is referred to as A) adjuvant, B) hormone, C) biologic, D) simulation

asked by ceecee
141. ## Physics

What property of Maxwells equations results in electromagnetic waves? A. Moving charges create B B. There are no magnetic monopoles C. delta E/Delta t creates B and delta B/delta T creates E D. Charges create E and currents create B

asked by Jessica
142. ## com 155

Students are often confused about the use of the words good and well in their writing. Write a 150 to 300-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details

asked by Anonymous
143. ## financing

what would be the simple interest on a \$4,500. loan if the annual percentage rate were 6.5%?

asked by lee
144. ## Finance

How much could I save in a year if I budgeted 1.4% of a \$19,250. income?

asked by lee
145. ## manaegerial economics

iven a firm’s demand function, P = 24 - 0.5Q and the average cost function, AC = Q2 – 8Q + 36 + 3/Q, calculate the level of output Q which a) maximizes total revenue b) maximizes pr

asked by amber
146. ## english

Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. • Bold each adverb. • Underline each adjective. • Compare the event to one or more similar events. When

asked by rene
147. ## math

please can you help me solve the following equations and please can you show your method. thanks 1) 4x+3/5x-6 = x-1/x-6 2) 4x-5/1-6x = x+10/x-6 thanks once again

asked by peter
148. ## algebra

The volume of a rectangular slab of concrete needs to exceed 72 cu. ft. If the length is 12 feet and the width is 8 feet, how thick does the concrete slab need to be?

asked by franklin
149. ## math

find the constants a, b and c such that or all values of x, 3x^2 - 5x + 1 = a(x+b)^2 +c also whats the coordinate of the minimum point?? thanks for the help

asked by Kane
150. ## English

For whoever has read the book "Midsummer Night's Dream" by Shakespeare, could you help me think of another name for the title for a child?

asked by Rebecca
151. ## Chemistry

Need help with these--- 28. Alloys are a. elements b. compounds c. mixtures 38. Alpha rays are really a. electrons b. helium nuclei c. electromagnetic waves Thanks -MC

asked by mysterychicken
152. ## math

like i only got the first one when 16/16=1 that is 2^0 that is a power of two can you help me with the rest?

asked by kayla
153. ## Chemistery

200g of water (specific heat of 4.184 Jg-1'c-1) loses 2000 J of heat. Its starting temperature is 70'C. Calculate the temperature of the water.

asked by May
154. ## English---meaning??

"Submit a myth, or story, whose origins stem from your specific culture." what does specific culture mean??? For that requirement, what do I have to do???

asked by Christine
155. ## math

calculste the variance of this set of numbers 2, 2, o, 3, 1, 4, 1, 3, 0, 0, 1, 4 4, 0, 4, 3, 4, 2, 1, 0, and the standard devative

asked by Dianne
156. ## math

how do i solve this equestion i don't understan 2(x+1)-3x=3(3+2X) please give me details on how to solve it because i have 100 more to go and i don't understand a thing

asked by brenda
157. ## AP US Hist

What are three reasons the Seven Years' War led to the American Revolution?

asked by Alice
158. ## chemistry

what difficulty must be overcome when mixing water and margarine? why?

asked by Anonymous
159. ## SCI/230

i am taking SCI/230 from the Univ of Phoenix and I need to know what Mendel's six principles are and an example if each. We are using page 78 in Chapter 3

asked by Lorine
160. ## physics

A car rolls down a 13.0° slope for 50.0 m, accelerating at 2.90 m/s2. Leaving the cliff at 13.0° below the horizontal, with the velocity it acquired from rolling downhill, the car falls 26.0 m to the rocks below, bursting into flame upon impact. What

asked by john
161. ## English

I need a 450 word thesis about why buying a house is better than renting an apartment?

asked by randy
162. ## math

like i only got the first one when 16/16=1 that is 2^0 that is a power of two can you help me with the others?

asked by kayla
163. ## english

Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. • Bold each adverb. • Underline each adjective. • Compare the event to one or more similar events. When

asked by rene
164. ## computer class

You have been hired as a consultant by your neighbor to help her with her computer. You notice that she has a screen full of icons which appear to be Word documents, Excel Spreadsheets and other graphic files. How would you help her organize her data i.e.

asked by Anonymous
165. ## algebra

the symbol % represents percent or percentage true or false

asked by S
166. ## English

For my english class we had to make a list of things that annoy us and we have to do a log entry that "select hits" and develop some clusters. Like i know cluster refers to groups, so things like traffic and red lights can be grouped together (driving),

asked by Jake
167. ## literacy

Please, explain what does it mean: Write a paragraph from the book that has no voice? I know, that some books have stong voice, medium voice. Thank you.

asked by Anonymous
168. ## English

How do you pronounce 'width'? Do we delete 'the d sound'?

asked by rfvv
169. ## HCA/220

Hello, I am working on a powerpoint presentation and I am trying to find images that I can use that can relate to the anatomy. I am having hard time trying to find pictures that do not have a copy wright on them. Do you have any suggestions? Thanks

asked by Nikol
170. ## trigonometry

2 cos^2=1 [0, 2pi)

asked by tina
171. ## The seven day Battle

why did the Seven day battle start?And who won?

asked by Cierra
172. ## geography

how do you rewrite the constitution?

asked by jaydah
173. ## Chemistry

the mass in grams of 125 ion atoms

asked by Debbie
174. ## Physics

Which way does the magnetic vector B point in the vicinity of the Earth's North Pole? A. Upward B Downward C. Horizontally D. THere is no magnetic field at the North Pole

asked by Jessica
175. ## Math

Find the horizontal asymptote, if any, of the graph of the given function. g(x) = 4x^5+9x^4+1/9x^5+3x^4-9x^2+3x+1

asked by Mary
176. ## Math

solve for x:3x2+2x+6=10(correct to two decimal digits)

asked by Tabisa
177. ## math

factor down (4^3)^2 ____ * _____ ______ _______ ______*______ _____ ____ when is it not possible to work an exponent multipication? In the space below give an example and work it out to prove what you say does not work

asked by kayla
178. ## Physics acceleration

Whats the equation?? I haven't done this is a while. Don't show me the answer i want to figure it out cus that's just how i roll thanks! A car accelerates uniformly from 10 m/s to 20 m/s in 4.2 seconds. What is the magnitude of its acceleration? Do i times

asked by Aisumi
179. ## psychology

common requirements for the development of liberation psychology and some possible obstacles to its inception

asked by moona
180. ## physics

at time t=0 the driver starts to brae determine how long the bus takes to stop

asked by amir
181. ## VOCAB

IF I AM WRITING LETTERS TO GOD, BOY SCOUTS, US ARMY, MY LOCAL SWIMMING POOL. NOT MAILING OR EXPECTING RESPONSES, RATHER USING THE LETTERS TO TELL A STORY. IS IT CORRECT TO SAY I AM WRITING LETTERS TO VAEIOUS ENTITIES? IF NOT, WHAT WORD COULD BE USED?

asked by PETE
182. ## Science

Would C6H6(NH3)OH be more soluble at a pH of 2.0 or 8.0?

asked by Anonymous
183. ## Election

In this year's 2010 U.S. election, who are the American citizens voting for? I'm not sure because I'm in Canada.

asked by AL 92
184. ## math

4x-5/1-6x = x+10/x-6 your help would be much appreciated

asked by peter
185. ## bio

what is nonfermentative bacteria?

asked by Elawabeh
186. ## Algebra 1

find the domain of the function: g(x)=2/5-9x

asked by Barbara
187. ## math

60m^3n^12 over 15mn can u put this in simplist form?

asked by kayla
188. ## maths

find the domain and range of the function f(x)=2/(1-4)^1/2

asked by chukwudi
189. ## pronouns

what are pronouns

asked by Anonymous