Tasha

Most popular questions and responses by Tasha
1. math

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

asked on March 15, 2009
2. science

When hydrochloric acid reacts with sodium sulfide, hydrogen sulfide gas and sodium chloride are produced. How many moles of H2S will be generated by 2.56 moles of HCl? 2HCl + Na2S → H2S + 2NaCl

asked on January 26, 2017
3. Math

What's the common factors of 10ab and 15a

asked on December 7, 2016
4. Physics

A dog searching for a bone walks 3.50 m south, then 8.20 m north of east, and finally 15.0 m west. (a) What is the magnitude of the dog's total displacement? (b) What is the direction of the dog's total displacement where directly east is taken as zero

asked on February 8, 2012
5. math

A spherical baloon expands when it is taken from the cold outdors to the inside of a warm house. if its suface area increases 16%, by what percentage does the radius change

asked on August 24, 2012
6. chemistry

Consider the reaction 3CH4(g)= C3H8(g)+ 2H2(g).Calculate Delta G at 298 K if the reaction mixture consists of 40 atm of CH4 , 0.011 atm of C3H8, and 2.1×10−2 atm of H2.

asked on February 15, 2012
7. math

The account balance on April 1st is \$50.51. On April 15th a payment of \$15.00 is made. On April 25th a purchase of \$19.27 is made. What is the finance charge if the annual rate is 18%?

asked on April 12, 2014
8. Us history

"Yellow journalism" during the late 19th century was marked by A) a decrease in readership B) over reliance on fossil evidence C) a decline of popularity of radio D) sensational headlines in questionable

asked on November 17, 2015
9. math

A club has 5 members. From these members, the positions of president, vice-president, and treasurer have to be filled. In how many different ways can these positions be filled

asked on July 1, 2019
10. math-help solve please

find out how long it takes a \$2700 investment to double if it is invested by 7% compounded semiannually. Round to the nearest tenth of a year . Use the formula A=P[1+r/n]^nt

asked on February 19, 2009
11. chemistry

Four identical 1.0-L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure. Which gas sample has the greatest number of molecules?

asked on October 27, 2010
12. Accounting

1. Bonds Payable has a balance of \$900,000 and Premium on Bonds Payable has a balance of \$10,000. If the issuing corporation redeems the bonds at 103, what is the amount of gain or loss on redemption? 1. \$1,200 gain 2. \$17,000 gain 3. \$1,200 loss 4.

asked on July 25, 2010
13. Accounting

1. The price of a bond is equal to the sum of the interest payments and the face amount of the bonds. 1. True 2. False 2. When a corporation issues bonds, it executes a contract with the bondholders, known as a bond debenture. 1. True 2. False 3. A

asked on July 25, 2010
14. AP chemistry

A 28 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 19.5 g. What was the mass of iron in the sample of ore? Answer in units of g.

asked on August 3, 2010
15. Health Care Administration

A Health Care Administrator has been hired by an, Ambulatory health care setting. What should the health care administrator expect to encounter in this type of health care setting, and how would the health care deal with issues or the different encounters

asked on March 4, 2012
16. world history

How did powerful families of Japan like the Fujiwara legitimate their power at court

asked on November 3, 2011
17. Algebra

If (c) were !@#\$%^&)=-4/k+7, what value of k would be excluded from the domain?

asked on November 25, 2015
18. Math

Determine whether or not the first number is divisible by the second number 10,199; 3

asked on October 24, 2017
19. information literacy

When choosing your search strategy for a search engine, it's best to A. combine keywords into phrases by using quotation marks. B. enter the least important word first. C. use verbs, articles, and capitals. D. ignore alternate spellings. My answer is a

asked on January 15, 2012
20. Statistics

1. The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6 and a standard deviation of 5.9. A simple random sample of 60 students who took the exam is selected for study: a) What is the

asked on March 25, 2011
21. physics

the speed of a transverse wave on a string is 450 m/s while the wavelength is .18m. the amplitude of the wave is 2mm how much time is required for a particle of the string to move through a total distance of 1km

asked on April 25, 2010
22. chemistry

A 40.4 g sample of a gas with the empirical formula C5H12 occupied a volume of 3070 mL with a pressure of 5016.0 torr at 168 °C. Enter the molecular formula of the compound.

asked on January 17, 2010
23. Chemistry

Rubbing alcohol is a 90 mass % solution of isopropyl alcohol, C3H8O, in water. How many grams of rubbing alcohol contains 20.0 g of isopropyl alcohol?

asked on February 1, 2011

ok i have to do a bibliography for nigeria and bolivia. those are both the title of my essays that i have to do. i researched and did everything i could to understand what they mean by a "bibliography" essay. i failed my first essay about bolivia because

asked on June 7, 2012
25. information literacy

When choosing your search strategy for a search engine, it's best to A. combine keywords into phrases by using quotation marks. B. enter the least important word first. C. use verbs, articles, and capitals. D. ignore alternate spellings.

asked on January 15, 2012
26. physics

when a tennis ball is served, it is a contact with the racket for a time that is typical 0.005 seconds. find the force needed to serve a 60.0 gram tennis ball moving with a velocity of 30.0m/s

asked on November 14, 2017
27. Chemistry

Please help!! If the density of fresh water at 4 degrees Celsius is 1.00g/mL, determine if the following objects will sink or float in water. 1.) A 200 feet (61m) tall pine tree that weighs 11,200 pounds (5,080 kg) and has a density of 0.88g/mL 2.) One

asked on February 12, 2015
28. statistics

"suppose that IQ scores have a bell-shaped distribution with a mean of 97 and standard deviation of 17.Using empirical rule, what percentage of IQ score are less than 46?"

asked on September 8, 2013
29. Math

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long. A preliminary sample

asked on April 2, 2019
30. Geometry

Can the Isosceles Triangle Theorem be written as a biconditional? If yes, rewrite it as one, if no, explain why not.

asked on January 18, 2008
31. math

Sam Seller offers credit at 19% interest per year.

asked on April 12, 2014
32. algebra

The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e−0.21 a where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 12.21 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round

asked on May 23, 2014
33. Chemistry

A 1.90-g sample of a large biomolecule was dissolved in 25.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is

asked on July 15, 2012
34. science

A crane whose motor has a power input of 5.0 kW lifts a 120-kg load of bricks through a height of 30m in 90s. what is the efficiency of the crane, which is the ratio between its output power and its input power.

asked on February 19, 2007
35. science

What is the speed of an 800-kg car whose KE is 250 kJ? Use the formula KE = (1/2) M V^2 Rearrange it to solve for V. You'll need to take a square root along the way.

asked on February 19, 2007
36. world history

Which group forced the Chinese to acknowledge their claim to the mandate of heaven and sign a treaty in 1127 C.E

asked on November 3, 2011
37. Math

How many triangles are in a polygon whose sum of its interior angles is 1080°.

asked on September 16, 2018
38. Chemistry

Based on the following chemical equation answer the question below show all your calculation The balanced chemical reaction of iodine with hydrogen sulfide h2s(g)+i2(s)-----2HI(g) + S(s) (a) Based on the above chemically balanced equation, how many grams

asked on October 20, 2012
39. Chemistry

the following acid—base neutralization reaction HNO3 (aq)+ KOH (aq) --KNO3(aq) + H2O (I) What is the molarity (M) of an HNO3 solution if 50.0ml is needed to react with 25.0ml of 0.150M KOH solution?

asked on October 20, 2012
40. chemistry

Based on the following chemical equation, answer the questions below. Show all your calculation The balanced chemical reaction of iodine with hydrogen sulfide is as follows: H2S(g)+I2(s)-----2HI(g) + S(s) (a) Based on the above chemically balanced

asked on October 19, 2012
41. geometry

BC is an altitude with length of 30 of ƒ´ABD. AC has a length of 16 What is the length of CD? If necessary, round your answer to two decimal places.

asked on June 27, 2010
42. physics

2. An object is 20.0 cm from a converging lens, and the image falls on a screen. When the object is moved 4.00 cm closer to the lens, the screen must be moved 2.70 cm farther away from the lens to register a sharp image. Determine the focal length of the

asked on April 30, 2015
43. Chemistry

What is the molarity of a solution of Mg(OH)2 if the solution contains 1.35 g in exactly 100 mL of solution??? A 15.0 mL solution of H2SO3 is neutralized by 12.0 mL of a standradized 1.00M NaOH solution. What is the concentration of the H2SO3

asked on December 12, 2012
44. math

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

asked on March 15, 2009
45. Physics

How much heat must be removed when 25 grams of steam at 100°C Is condensed to form liquid water at 100°C?

asked on March 6, 2013
46. math

Can someone assit me with my two math problems Assume that the salaries of elementary school teachers in the united states are normally distributed with the mean of 36,000 and a standard deviation of 6,000. What is the cut off salary for teachers in the

asked on April 18, 2010
47. Chem

Choose the member of each set that you would expect to be more soluble in water. Explain your answer. Chloroform, CH3Cl, or hydrogen chloride. My gut instinct was HCl, however I'm not sure why [or if] it's more soluble than CH3Cl. Of course HCl is more

asked on March 20, 2007
48. science

How long will it take a 1000-kg car with a power output of 20 kW to go from 10m/s to 20 m/s? Ignoring friction, the change in kinetic energy has to equal Power*time

asked on February 19, 2007
49. Strategic Management

A multidomestic strategy is similar to a transnational strategy. True or False?

asked on October 2, 2016
50. Math

In one year, Melinda grew 2 1/4 inches to 48 3/8. What was her height at the beginning of the year?

asked on February 19, 2013
51. info interacy

The Boolean search connector OR is used for which of the following purposes? A. To restrict a search by excluding results that include a particular term B. To narrow a search by adding another concept C. To search several different databases simultaneously

asked on January 15, 2012
52. History

were can I find information about this question? The exploration and settlement of the American continents by Europeans initiated contact between Europeans, Native Americans, and slaves brought from Africa. How did these diverse interactions affect each

asked on April 30, 2009
53. science

the acceleration of gravity on the surface of Mars is m/s squared. if an astronaut in a space suit can jump upward 20cm on the earth's surface, how high could he jump on the surface of Mars? You need to provide a number for the acceleration of gravity on

asked on February 19, 2007
54. Microeconomics

Combination Health Care All Other Goods A 0 100 B 25 90 C 50 70 D 75 40 E 100 0 b. What is the opportunity cost of combination C? c. Suppose a second nation has the following data. Plot the PPC, and then determine which nation has the comparative advantage

asked on October 17, 2010
55. math

Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1

asked on April 5, 2010
56. Physics

An apartment has a living room whose dimensions are 2.5 m 4.8 m 5.9 m. Assume that the air in the room is composed of 79% nitrogen (N2) and 21% oxygen (O2). At a temperature of 27°C and a pressure of 1.01 105 Pa, what is the mass (in grams) of the air?

asked on April 28, 2008
57. Physics

Three moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 430 to 160 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include

asked on April 20, 2008

You are a marketing manager interviewing for a new job at several different firms simultaneously. You expect to be asked the same questions in each interview dealing with what you think are some good new marketing opportunities for each firm to pursue. You

asked on August 11, 2013
59. Chemistry

In the following acid—base neutralization reaction HNO3(aq)+ KOH(aq) ----KNO3(aq) + H2O (I) What is the molarity (M) of an HNO3 solution if 50.0 ml is needed to react with 25.0 ml of 0.150M KOH solution?

asked on October 19, 2012
60. Math

Bob's frog can travel 6 inches per jump, Kim's frog can travel 9 inches, and Jack's frog can travel 13 inches. If the three frogs start off at point 0 inches, how many inches will it be to the next point that all three frogs touch?

asked on February 27, 2010
61. Physics

A child is twirling a 0.0116 kg ball on a string in a horizontal circle whose radius is 0.102 m. The ball travels once around the circle in 0.560 s. (a) Determine the centripetal force acting on the ball. N (b) If the speed is doubled, does the centripetal

asked on April 3, 2008
62. The Age Of Jefferson To The American Expansion

1. Which of the following utopian communities was founded and established in New York State? A. Shaker Village B. Spiritualist C. Oneida D. New Harmony 2. The first fully developed American factory system emerged in the _______ industry. A. textile B.

asked on December 7, 2012
63. Chemistry

How would you prepare 1000.0ml of 0.600M NaOH solution starting from concentration of 1.000M

asked on October 19, 2012
64. Physics

A car travels at a constant speed around a circular track whose radius is 2.5 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car?

asked on April 2, 2008
65. physics

a 15000N car on a hydrolyic lift rests on a cylinder with a piston of radius 0.20M,. if a connecting cylinder with a piston of 0.04M radius is driven by compressed air, what force must be applied to the smaller piston in order to lift the car? am i doing

asked on November 12, 2007
66. children's literature

two types of biographies are:

asked on June 6, 2013
67. Chemistry

Can someone please explain this problem to me step by step pleaseeeeeee? In the following acid—base neutralization reaction HNO3 (aq)+ KOH (aq)---KNO3(aq) + H2O(I) What is the molarity (M) of an HNO3 solution if 50.0ml is needed to react with 25.0ml of

asked on October 23, 2012
68. physics

A car traveling at 70 km/h. It then accelerates at 3.6m/s^2 to 90km/h. How long does it take to reach a new speed. How far does it travel during acceleration

asked on January 13, 2012
69. mathematics

Squareroot of (0.0256/25) giving your answer in standard form. Is the ans (0.0256/25)= 0.001024 Squareroot of 0.001024 = 0.032

asked on June 13, 2009
70. college physics

i just need to know if i got the right answer. plz thankyou a 15000N car on a hydrolyic lift rests on a cylinder with a piston of radius 0.20M,. if a connecting cylinder with a piston of 0.04M radius is driven by compressed air, what force must be applied

asked on November 13, 2007
71. physics

At the Indianapolis 500, you can measure the speed of cars just by listening to the difference in pitch of the engine noise between approaching and receding cars. Suppose the sound of a certain car drops by a factor of 2.40 as it goes by on the

asked on June 18, 2007
72. Math

The vertical angle of a cone is 60°and its slant height is 30cm. Find the radius of the base

asked on September 16, 2018
73. Math

In a math class, students can take either algebra or geometry or both. If there are 50 students in the class and 35 take geometry, while 28 take algebra, how many students take both?

asked on September 16, 2018
74. statistics

Last semester, a certain professor gave 23 As out of 279 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)

asked on March 10, 2013
75. PHYSICS

A person on an apartment balcony holds a ball over the balcony and throws it directly upwards with an initial velocity of 30 m/s [up]. The ball was thrown from 15 m above the ground. How long will it take for the ball to hit the ground?

asked on February 19, 2013
76. chemistry

How would you prepare 1000.0ml of 0.600M NaOH solution starting from concentration of 1.000M.

asked on October 20, 2012
77. psychology

describe why it is important to consider each domain in the study of adult development

asked on September 26, 2010
78. chemistry

1.0 of a 4.0 solution is added to water so that the final volume is 8.0 .

asked on May 24, 2010
79. chemistry

Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm–1 )

asked on January 17, 2010
80. Physics

An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 4.60 m3 and the temperature raised to 30.5°C, what will be the pressure of the gas? Pa

asked on April 20, 2008
81. Physics

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked on April 3, 2008
82. physics

A bicyclist traveling with speed v=3.3 m/s on a flat road is making a turn with a radius r=8.6 m. The forces acting on the cyclist and cycle are the normal force (FN) and the friction force (Ffr) exerted by the road on the tires, and mg, the total weight

asked on June 9, 2007
83. Math

6 lumberjacks can cut down 15 mahogany trees in 2 hours. How much longer will it take 8 lumberjacks to cut down 35 trees working at the same rate

asked on September 16, 2018
84. chemistry

What is the empirical formula of a compound that contains two moles of calcium, two moles of sulfur and eight moles of oxygen? A. CaS0 B. CaS02 C. CaSO4 D. Ca2S0 i think D

asked on May 14, 2018
85. Math

lucy has 77 blank recipe cards. she divided her recipe box intpo 9 sections. if 5 sections have 1 more card than all the other sections, how many cards are in each section?

asked on November 28, 2017
86. Mat104

ind the future value, using the future value formula and a calculator. (Round your answer to the nearest cent.) \$955 at 5.5% compounded quarterly for 3 years

asked on February 9, 2015
87. chemistry

how many grams of hydrogen are needed to completely react with 8 moles of nitrogen from this equation N2+H2=NH3

asked on April 28, 2014
88. Statics

85 lb force is applied to the 200lb crate, which is stationary before the force is applied. Determine the force exerted by the horizontal surface on the crate

asked on April 11, 2013
89. MATH

If the sales tax on an item is 7%, the sales tax on an item costing d dollars can be found by the expression .07d. Determine the sales tax on a compact disk that cost \$15.99.

asked on February 23, 2013
90. world history

Ignatius Loyola was a

asked on November 2, 2011
91. Statistics

This problem does not make any sense to me!!! I would greatly appreciate your assistance, thanks. A recent survey showed 4.6 percent of the sample of 250 had suffered some kind of identity theft in the past 12 months. a. Construct a 90 percent confidence

asked on October 31, 2011
92. math

Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1

asked on April 5, 2010
93. Math

Hi these are the problems I attempted, can someone tell me If I did them correctly? Thanks in advance3 Jane has invited 126 people for a pizza party. If each pizza has 18 slices and she estimates that she needs 3 slices per person, then how many pizzas

asked on March 20, 2010
94. algebra

Cole's two student loans totaled \$31000. One of his loans was at 2.8% simple interest and the other at 4.5%. After one year, Cole owed \$1024.40 in interest. What was the amount of each loan?

asked on March 19, 2010
95. chemistry

A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250-mL volumetric flask and diluted to

asked on January 28, 2010
96. Math

x + y = 21 what can be the smallest integer for positive xy

asked on January 27, 2018

please point me in the right direction to begin. Thanks! Your small business needs to buy new office furniture for your new headquarters. You have the option of leasing the furniture, or buying the furniture. You can purchase the furniture for \$15,000 per

asked on September 15, 2014
98. Math

As a means of getting exercise, you choose from going for a run, riding your bike or going for a swim. Your previous behavior shows that you bike 30% of the time and swim 15% of the time. What is the probability that the next time you exercise you will go

asked on July 11, 2013
99. physics

In one of Michelson's experiments, a beam from a revolving mirror traveled 12 km to a stationary mirror. How long a time interval elapsed before the beam returned to the mirror?

asked on April 25, 2013
100. Trigonometry

Simplify the expression using trig identities: 1. (sin4x - cos4x)/(sin2x -cos2x) 2. (sinx(cotx)+cosx)/(2cotx)

asked on July 15, 2012

1. 1
2. 2
3. 3