Most Popular Questions of 2008

1. Algebra

What Do You Call It When Someone Pays Back a Loan Quickly? I would Really Apreciate To Get The answer.

asked by Seam on February 8, 2008
2. help plzzz

ALGEBRA PIZZAZZ: IN MUSIC, WHAT DOES "ALLEGRO" MEAN?

asked by jessica on December 3, 2008
3. Math

What multiplication fact can be found by using the arrays for 2x9 and 5x9?

asked by Lori on February 11, 2008
4. Algebra

How Does a Rodeo Star Get Around

asked by Anonymous on November 9, 2008
5. algebra math riddle...

how many cattle are there on the lazy circle double-o four square ranch?

asked by noname on October 2, 2008
6. Chemistry

Balance the following redox equations. All occur in Acidic solutions. 1. Cr2O7^2-^ + C2O4^2-^ -> Cr^3+^ + CO2 2. Cu + NO3^-^ -> CU^2+^ + NO 3. MnO2+ HNO2 -> Mn^2+^ + NO3^-^ 4. PbO2 + Mn^2+^ + SO4^2-^ -> PbSO4 + MnO4^-^ 5. HNO2 + Cr2O7^2-^ -> Cr^3+^ +

asked by Yukiko on September 3, 2008
7. math

what should you not do if you want to help get rid of graffiti

asked by Anonymous on August 19, 2008
8. chemistry

Build the orbital diagram for the ion most likely formed by phosphorus.

asked by dre on November 10, 2008
9. math

what can you use to tie up a spaceship

asked by Anonymous on April 17, 2008
10. Chemistry

If it takes three "breaths" to blow up a balloon to 1.2 , and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 balloon. Express your answer in moles using two significant figures Would the answer be 0.38

asked by George on September 17, 2008

The question is: If the ones digit of a number greater than 1 is 0, what factor or factors must that number have? a) 2 only b) 5 only c) 2 and 5 d) neither 2 or 5 I thought neither D as it would have to be a number such as 10. 10 + 10 = 20 10 + 10 + 10 =

asked by Kristina on November 11, 2008
12. Physics

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart’s velocity after a 6.0-newton westward force acts on it for 2.0 seconds? (1) 2.0 m/s east (3)

asked by James on January 3, 2008
13. physics

The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center. When the skater's hands and arms are brought in and wrapped around his body to execute the spin, the hands

asked by Erin on April 12, 2008
14. physics

the sensor in the torso of a crash-test dummy records the magnitude and direction of the net force acting on the dummy. if the dummy is thrown forward with a force of 130.0 N while simultaneously being hit from side with a force of 4500.0 N, what force

asked by i love polka on November 4, 2008
15. Physics - Buoyant Force

A piece of metal weighs 50.0 N in air, 36.0 N in water, an 41.0 N in an unknown liquid. Find the density of the unknown liquid.

asked by Phillip on December 16, 2008
16. Physics

One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h . If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5

asked by Elisa on June 1, 2008
17. chem

choose the compound below that contains at least one polar covalent bond, but is nonpolar a. ICl3 b SeBr4 c. CF4 d. HCN Im stuck between C and D C is a tetrahedral which has no net dipole so is non polar, and D is linear which also makes it non polar.

asked by natash on May 1, 2008
18. Math -- Algebra

Why Are Mr. and Mrs. Number so Happy?

asked by Sarah on April 22, 2008
19. Physics

A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. (Intro 1 figure) The spring has a spring constant k, the ball has a mass m, and the ramp rises a height y above

asked by Sam on October 31, 2008
20. Challenge and Change

I'm trying to find an answer to this question.. Search and find three other contributors to the field of Marxist or neo-Marxist (new Marxist) research... I've been searching for hours with no luck!! Someone please help!

asked by Kyle on February 17, 2008
21. alg

how much money is invested at 5% compounded continuously for 3 years will yield \$820?

asked by jerson on June 9, 2008
22. Chemistry/hydrolysis of ATP

Cells use the hydrolysis of ATP as a source of energy. The conversion of ATP to ADP has a standard free energy change of -30.5 kJ/mol. If all the free energy from the metabolism of glucose. C6H12O6(s)+6O2(g)¨6CO2(g)+6H2O(l) goes into the conversion of

asked by Mary on August 28, 2008
23. Math

asked by Mikey on October 1, 2008

juan says, When you put together unequal group, you can only add. is this correct

asked by cook on November 12, 2008
25. Math

Algebra Riddle with PIZZAZZ "Did you hear about..."

asked by JC on October 26, 2008
26. Physics

Two students walk in the same direction along a straight path, at a constant speed - one at .90 m/s and the other at 1.90 m/s. a.) assuming that they start at the same point ant the same time, how much sooner does the faster arrive at a destination 780 m

asked by Margie on August 31, 2008
27. chemisty

Calculate the density of oxygen,O2 , under each of the following conditions: 1- STP 2- 1.00 atm and 35.0 C

asked by unknown on October 8, 2008

Please double check one last time have to hand it in tomorrow.Thank-You in Advance. This was the lab experiment: ------------------------------------------- A. Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium

asked by Saira on October 27, 2008
29. chemistry

Which of the following diatomic species are paramagnetic and which are diamagnetic? A blank molecular orbital diagram (Part B 1 figure) has been provided to help you. Drag the formulas to the appropriate magnetic bin :C2^2+,Li2-,B2^2-

asked by defferan on November 19, 2008
30. physics

A jet airliner moving initially at 300 mi/h due east enters a region where the wind is blowing at 100 mi/h in a direction 26.0° north of east. What is the new velocity of the aircraft relative to the ground? in m/h at degrees North of east.

asked by Elisa on June 2, 2008
31. Physical science

When you drop a 0.36 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earth's surface. According to Newton's third law, the apple must exert an equal but opposite force on Earth. If the mass of the earth 5.98x10^24 kg, what

asked by Jenna on February 17, 2008
32. Algebra II

I'm confused.. 1. The cables of a suspension bridge are in the shape of a parabola. The towers supporting the cable are 600 feet apart and 80 feet high. If the cables touch the road surface midway between the towers, what is the height of the cable at a

33. math riddle ALGEBRA WITH PIZZAZZ

What did the Spanish Farmer say to his chicken?

asked by Bella on September 14, 2008
34. chemistry

Arrange the following in order of decreasing stability. A blank molecular orbital diagram (Part A 1 figure) has been provided to help you. Rank the fluorine species from most to least stable. To rank items as equivalent, overlap them. F2, F2+, F2-

asked by defferan on November 19, 2008
35. Math

What happened when the Crossword Puzzle Champion died?

asked by Matt on April 14, 2008
36. physics

Two artificial satellites, 1 and 2, orbit the Earth in circular orbits having radii R1 and R2. If R2=2R1, the accelerations a2 and a1 of the satellites are related how?

asked by Hannah on January 19, 2008
37. algebra

what happened when two fruit companies merged? this question is on a worksheet i have to do.

asked by jESS on March 11, 2008
38. Chemistry

What is the name of the product formed by the reaction of propylide ion and 2-chloropropane? I'm having problem because I don't know the formula of propylide ion.

asked by Jennifer on June 5, 2008
39. Science

What are 2 substances that are useful because of their viscosity?

asked by Cyleste on October 9, 2008
40. Chemistry

Write the molecular equation and the net ionic equation for each of the following aqueous reactions. Ca(NO3)2 + K2CO3 FeSO4 + NaCl NiCl2 + NaBr

asked by Brittany on September 30, 2008
41. medical terminology

How can eliminating abbreviations reduce errors?

asked by sonia on November 12, 2008
42. chemistry

Given that S is the central atom, draw a Lewis structure of OSF4 in which the formal charges of all atoms are zero

asked by defferan on November 15, 2008
43. chemistry

100 mL of is initially at room temperature (22)C. A chilled steel rod at 2 C is placed in the water. If the final temperature of the system is 21.2 C, what is the mass of the steel bar? Specific heat of water = 4.18J/g(C) Specific heat of steel =

asked by Lilit on October 20, 2008
44. physics

A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.10s later. What was the rocket's acceleration?

asked by Jeff on September 6, 2008
45. Chemistry

A. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total volume of 75.0 mL of H2O. -What is the molarity of the stock solution of luminol? B. Before investigating the scene, the

asked by Irvin on October 12, 2008
46. Statistics / Math

A tourist in Ireland wants to visit seven different cities. If the route is randomly selected, what is the probability that the tourist will visit the cities in alphabetical order?

asked by Sam on February 26, 2008
47. chem

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s)+3O2 (g)-->2Al2O3 (s) 4 mol Al 2.6 mol O2

asked by natash on October 1, 2008
48. physics

Two blocks are pushed along a horizontal frictionless surface by a force of 20 newtons to the right. The force acts on the 3 kg block, which in turn pushes the 2kg block sitting next to it. The force that the 2-kilogram block exerts on the 3-kilogram block

asked by Hannah on January 20, 2008
49. Math

The population of a slowly growing bacterial colony after t hours is given by p(t)=3t2+29t+150 . Find the growth rate after 4 hours?

asked by Bee on July 2, 2008
50. science

Two stones are launched from the top of a tall building. One stone is thrown in a direction 30.0degree above the horizontal with a speed of 10.0m/s ; the other is thrown in a direction 30.0degree below the horizontal with the same speed. Which stone lands

asked by bob on September 8, 2008
51. Physics (check)

A merchant in Katmandu sells you a solid gold 1-kg statue for a very reasonable price. When you get home, you wonder whether or not you got a bargain, so you lower the statue into a measuring cup and measure its volume. What volume will verify that it's

asked by Emily on May 18, 2008
52. Chemistry

Which two solutions, when mixed together, will undergo a double replacement reaction and form a white, solid substance? 1. NaCl(aq) and LiNO3(aq) 2. KCl(aq) and AgNO3(aq) 3. KCl(aq) and LiCL(aq) 4. NaNO3(aq) and AgNO3(aq) I know the answers 2 but I have no

asked by TJ on January 23, 2008
53. Chemistry

For a reaction between sodium phosphate and strontium nitrate write out the following: a) The balanced molecular equation b) The ionic equation c) The net ionic equation a) I think I have this one: 2 Na3PO4 (aq) + 3 Sr(NO3)2 (aq) --> 6 NaNO3 (aq) +

asked by Donna on May 14, 2008
54. Physics

A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration? A. 0.21 B. 0.46 C. 0.64 D. 0.78 E. 0.97 acceleration= change in velocity/change in time and the velocity= change in displacement

asked by Mark on July 16, 2008
55. FRENCH... yeah....

I have homework on the song, je realise by sinik, and it asks me what do i feel when i listen to this, and i only have 2 feelings, and i need 2 more... also it says why do u feel these feelings. go to h t t p : / / y o u t u b e . c o m / w a t c h ? v = 9

asked by hello pplz on April 5, 2008
56. Science

The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh

asked by Amanda on June 24, 2008
57. Partial Pressure- Chemistry

A gaseous mixture of O2 and N2 contains 31.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg?

asked by Sarah on September 23, 2008
58. chem

draw the lewis structure for NO2- including any valid resonance structures. which of the following statements are true? a. the nitrite ion contains 2 N-O bonds that are equivalent to 1 1/2 bonds. b. the nitrite ion contains 2 N=O double bonds c. the

asked by natash on May 1, 2008
59. chemistry

Using your answer from Part A, calculate the volume of a mole of Na atoms (in cm3/mol ). Assume that the entire volume is occupied by Na atoms leaving no gaps or holes between adjacent atoms. (Answer A is V= 2.70*10^7)

asked by sara on November 10, 2008
60. Physics

A large crate filled with physics laboratory equipment must be moved up an incline onto a truck. 1. The crate is at rest on the incline. What can you say about the force of friction acting on the crate? a. The friction force point up the include b. The

asked by Nicole on September 22, 2008
61. Physics

A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions: a) When the ropes are horizontal b) When the ropes

asked by Robert on February 5, 2008
62. Economics

. Consider total cost and total revenue given in the table below: QUANTITY 0 1 2 3 4 5 6 7 Total cost \$8 \$9 \$10 \$11 \$13 \$19 \$27 \$37 Total revenue 0 8 16 24 32 40 48 56 a. Calculate profit for each quantity. How much should the firm produce to maximize

asked by SMsm on June 7, 2008
63. college physics

three carts of masses 4.0kg, 10kg, and 3.0kg move on a frictionless horizontal track with speeds of 5.0m/s, 3.0m/s, and 4.0m/s. The carts stick together after colliding. find the velocity of the three carts.

asked by sarah on June 1, 2008
64. Chemistry

For each substance, write the formula(s) of all species you expect to be present in aqueous solution in the first column. If there are significant minor species, write their formulas in the last column. If the substance is only slightly soluble, use the

asked by Anonymous on June 30, 2008
65. statistics

for a standard normal curve, find the z-score that separates the bottom 30% from the top 70%

asked by kay on November 5, 2008
66. English-Poetry

can someone help find "The Dying Eagle" by E.J. Pratt for me i need it for my poetry assignment and give me the site address. plz and ty

asked by Tony on November 3, 2008
67. Calculus

Consider all right circular cylinders for which the sum of the height and circumference is 30 centimeters. What is the radius of one with maximum volume. Work: V=(pi)r^2(h) h= V/(pi)(r^2) 2(pi)r + h=30 V=(pi)r^2(h) V'=2(pi)(r)h+2pi(r^2)=0

asked by Anonymous on June 4, 2008
68. Physics

What is the thinnest film of a coating with n=1.42 on glass n=1.52 for which destructive interference of the red component (650 nm) of an incident white light beam in air can take place by reflection? I am confused on the n's and I have no idea what

asked by J on April 21, 2008
69. physics

a 200kg sailboat experiences an eastward force of 3000N by the ocean tide and a wind force against its sails with magnitude of 6000N directed toward the northwest (45 degrees north of west). what is the magnitude of the resultant acceleration?

asked by Steph on October 23, 2008
70. Chemistry

When 2.50 mol of Mg3N2 are allowed to react according to the following equation, how many moles of H2O also react? Mg3N2 + 6H2O ---> 3Mg(OH)2 + 2NH3

asked by Soojung on August 28, 2008
71. math

I need some help. My teacher gave me a worksheet "Why does a poor man drink Coffee?" written by Pizzazz. Does anyone know how to do this sheet?

asked by Jack on April 24, 2008
72. physics

Three identical thin rods, each of length L and mass m, are welded perpendicular to one another as shown below. The assembly is rotated about an axis that passes through the end of one rod and is parallel to another. Determine the moment of inertia of this

asked by sara on November 6, 2008
73. Accounting - Please check me

Indicate whether a debit or credit decreases the normal balance of each of the following accounts. Office Supplies- debit Repair Service Revenue- debit Interest Payable- debit Accounts Receivable- creditSalaries Expense- debit Owner Capital- credit Prepaid

asked by Kim on April 8, 2008
74. chemistry

Determine the percent yield for the reaction between 98.7g of Sb2S3 and excess oxygen gas if 72.4g Sb4O6 is recovered along with an unknown amount of sulfur dioxide gas.

asked by kate on March 7, 2008
75. math

you want to draw an enlargement of a design that is printed on a card that is 4 in. 5 in. you will be drawing this on a piece of paper that is 8 1/2 in. by 11 in. what are the dimensions of the largest complete enlargement you can make??? plz include

asked by asha on December 9, 2008
76. Chemistry

Draw the Lewis structures for BrO3- and ClO4- and indicate their correct number of additional resonance structures. I'm a little confused about this. For example, I've got the correct original form of BrO3- down. Where all 3 O atoms are single bonded to

asked by Raj on September 28, 2008
77. algebra

what do you call it when somebody spends 20 years in the 24th row of a theater

asked by Anonymous on February 19, 2008
78. history

the decision of the jury shall be final except under either of these two circumstances

asked by Anonymous on May 22, 2008
79. Walquist

Geometry question. a Math riddle. What does a cat need to play baseball?

asked by Jim on December 8, 2008
80. physics

2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with an initial upward speed

asked by gaby on December 4, 2008
81. Chemistry

Given the thermodynamic data in the table below, calculate the equilibrium constant for the reaction: 2SO2(g)+O2--> 2SO3 Substance (DeltaH^o) (Delat S^o) SO2 -297 249 O2 0 205 SO3 -395 256 Answer (it was given) 2.32x10^24 Even though the answer is given

asked by Sara on March 16, 2008
82. chemistry

the specific heat of a gas is found to be 0.075 calories at constant volume & its formula weight is 40. the atimicity or the valency of the gas is ............

asked by hriday on December 27, 2008
83. science

use water displacement to find the volume of four marbles in ml

asked by gina on August 30, 2008
84. physics

From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/h?

asked by jason----HELP!!!! on November 22, 2008
85. physics

A small 2g plastic ball is suspended by a 20 cm long string in a uniform electric field. If the ball is in equilibrium when the string makes a 15 degree angle with the vertical, what is the net charge on the ball? E=10^3 N/c(answer: 5.25x10^-6) Work: I

asked by Anonymous on February 11, 2008
86. physics

A rectangular trough, 2.0 m long, 0.50 m wide, and 0.50 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge. When you pull the plug, at what speed does water emerge from the hole? (in m/s)

asked by Sandhya on December 5, 2008
87. Economics: Price Elasticity

Please check my answers whether they are correct or not. If not, please help me why they are wrong. Thank you. Question 1: Point: A (300, 1000) Point B: (200, 1200) According to the midpoint method, the price elasticity of demand for hot dogs between point

asked by Anonymous on October 2, 2008
88. Maths

Principal - 6000 Rate - 5% Effective Date - May 15 Maturity Date - November 1 Partial Payment Amount - \$1500 Partial Payment Date -August 15 Also Answer the following questions: 1. NUMBER OF DAYS BETWEEN EFFECTIVE DATE AND PARTIAL PAYMENT = 2. INTEREST ON

asked by Kim on March 10, 2008
89. Any chemistry lovers?

A voltaic cell consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the following initial concentrations: [Mn2+] = 0.090 M; [Cd2+] = 0.060 M. A)What is the intital Ecell? B)What is Ecell when [Cd2+} reaches .050M. C) What is [Mn2+] when Ecell reaches 0.055V? D)

asked by stumped on May 4, 2008
90. Chemistry

If a hydrate of the formula MCl * xH2O decomposes when heated to produce HCL, what change would you expect to occur when a piece of litmus paper is held in the path of the vapor released?

asked by Chloe on October 14, 2008
91. algebra with pizzazzi

Do Elephants know how to gamble

asked by lizzy on December 5, 2008
92. chemistry

TiO2 + C + 2Cl2 > TiCl4 + CO2 If you begin with 1.25 moles of TiO2, what mass of Cl2 gas is needed? i got 175g of Cl2 is my answer correct?

asked by shaggy on April 20, 2008
93. english language

what is the sound word for bow and arrow? eg. Nobody heard the ____ of the bow or the ____ of the arrow.

asked by Susan on January 3, 2008
94. physics

A wheel of radius 0.5 m rotates with a constant angular speed about an axis perpendicular to its center. A point on the wheel that is 0.2 m from the center has a tangential speed of 2 m/s. (a) Determine the tangential speed of a point 0.4 m from the center

asked by Sandhya on October 30, 2008
95. Physics

How long does it take a 19 kW steam engine to do 6.8x10^7 of work? I have no idea how to solve this... Would someone please help?

asked by Cassidy on January 29, 2008
96. PHYSICS

Calculate the power output of a 1.3-g fly as it walks straight up a windowpane at 2.5 cm/s

asked by Lizbeth on April 10, 2008
97. Physics

A crate is pulled right with a force of 82.0N to the left wtih a force of 115N upward with a force of 565N and downward with a force of 236N Fine the net external force in the X direction Find the net external force in the y direction find the the

asked by Physics on December 14, 2008
98. question

why can the owner of a business withdraw assets from that business for personal use? b. why would the owner withdraw assets other than cash?

asked by jerson on September 7, 2008
99. Physics EM

An ammeter is connected in series to a battery of voltage V_b and a resistor of unknown resistance R_u The ammeter reads a current I_0. Next, a resistor of unknown resistance R_r is connected in series to the ammeter, and the ammeter's reading drops to

asked by Spencer on March 6, 2008
100. chemistry

what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 atoms Mg c)4.50 x 10^12 atoms Cl d)8.42 x 10^18 atoms Br e) 25 atoms w f) 1 atom Au can you please explain a and b to me then i'll come back later and see if i did the rest right? Thanks in

asked by john on February 23, 2008