# Questions Asked onFebruary 22, 2010

1. ## Chem answer check/ help

For each of the following water-soluble compounds, indicate the ions present in an aqueous solution: NaI K2SO4 NaCN Ba(OH)2 (NH4)2SO4 would the answer to NaI be Na+ I-? Should there be more to my answer? Would K2SO4 be K+ SO-? Thanks for the explanation.

2. ## Precalculus

if f(x)=int(2x) find f(1.2)

3. ## Math

A standard train ticket in a certain city costs \$2.50 per ride. People who use the train also have the option of purchasing a frequent-rider pass for \$18.00 each month. With the pass, a ticket costs only\$1.75 per ride. How many train rides in a month make

4. ## Chemistry 101

I don't remember my instructor going over this and the book isn't explaining it very well. Can anyone help answer these? Indicate the concentration of each ion or molecule present in the following solutions. 1. 0.30 M NaNO3 2. 1.5x10^-2 M MgSO4 3.

5. ## Physics

The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 * 10-4 J. If the charge was started from rest and had 4.73*10-4 J of kinetic energy when it reached point b, what is the magnitude of the potential difference

6. ## Physics

A 45 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 29 degrees, the crate begins to slide downward. What is the coefficient of static friction between the crate and the ramp? At what angle does the

7. ## Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and

8. ## Math

Find an angle such that 3 times the complement of the angle is 10 degrees less than the supplement of the angle. I know that supplement means 180 and complement is 90. I don't know what kind of problem this is.

9. ## chemistry

Which of the following is the formation reaction for CaO(s) ? A. CaO(s) Ca(s) + 21O2(g) B. Ca2+(aq) + O2–(aq) CaO(s) C. Ca(s) + 21O2(g) CaO(s). D. 2 Ca(s) + O2(g) 2CaO(s) E. 2 CaO(s) 2 Ca(s) + O2(g)

10. ## Math

What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to

11. ## Algebra 2

Express the function F(x)=1/(x+9) in the form g of h. If h(x)= x+9 , find the function g(x).

12. ## Math

An employee has a salary of \$20,370 after getting a 5% raise. What was their salary before the increase in pay? What is the equation that needs to be used here? Thanks.

13. ## Math

Find the solution set for the equation. |x + 6| = 0

14. ## Physics

A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force and the friction force acting on the crate in each of these situations. (a) The crate is at rest. Normal Force : 1.perpendicular

Which of the following are strong electrolytes? BaCl2 AgNO3 PbI2 Pb(NO3)2 KI I think they are all strong electrolytes. Is this correct?

16. ## Math

Find the equation of a line that is perpendicular to 3x-2y=6 and passes through (1,2)

17. ## Chemistry

how many grams of NaCN would you need to dossolve in enough water to make exactly 250.0mL of soultion with pH of 10.00?

18. ## math

An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to

19. ## Biology

Last ones on the test-- 37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the

20. ## Algebra

Solve using the multiplication principle. Don't forget to check. -x/2=8. Here is how I did the problem but I think it's wrong. (-2/x)-x/2=8(-2/x) x= -16. Could you please help? Thanks.

21. ## writing sentences and paragraphs

Paragraph 1 Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must

22. ## math

A student says that it is actually impossible to measure an angle, since each angle is the union of two rays that extend infinitely and therefore continue forever. What is your response?

23. ## Physics

A farm tractor tows a 3800-kg trailer up a 19 degrees incline with a steady speed of 3.0 m/s. What force does the tractor exert on the trailer? (Ignore friction.)

24. ## Physics

How far above the surface of the Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from the Earth's gravity for the object on the Moon's surface or from the Moon's

25. ## English

This is my whole poem. My poem dosen'thave to rhyme. The Green Team is like an angel,dancing through the beautiful blue sky. It is a miracle having Dearbhail,Amber,Stacey, Marina,Kudzayi and Sophie in Catherine. We work as a Team with no Fight's or

26. ## geometry

State the negation of the following statement: The sun is not shining.

28. ## Chemistry

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and

29. ## Physics

A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.70 m/s2.The car makes it one quarter of the way around the circle before it skids off the track. Determine the coefficient of static

30. ## Math

You plan on going golfing this weekend with a friend. You can either go to your favorite course which is 14 miles north of your house or to your friend's favorite course which is 14 miles south of your house. Write an abo!@#\$%^&e value inequality that

31. ## English

Can you please check if the following statements are correct? Thank you. 1.Antony uses a rhetoric language. 2.He makes a comparison (draws a parallel) between his uncle and his father. 3.Hamlet refers to Claudius as a pickpocket of the Empire since he took

32. ## college

how many grams of chlorine are in 65 grams of CF2Cl2?

At what height is an object that weighs 490 N if it gravitational potential energy is 4900 N-m?

34. ## English

Has anyone seen the move "The Mighty", some people refer to it as "Freak the Mighty". I have a few questions on it, but before I post them here, I'd like to know if you've ever watched it. Thanks

36. ## Physics

When you push a 1.80-kg book resting on a tabletop, it takes 2.05 N to start the book sliding. What is the frictional force exerted on the book when you push on it with a force of 0.80 N?

37. ## Biology

37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the growing chain according to

38. ## physics

A 121 cm-long, 3 g string oscillates in its m = 3 mode with a frequency of 154 Hz and a maximum amplitude of 5.0 mm. What are the wavelength and the tension in the string?

39. ## social studies

what is the the capital of florida?

what is love

41. ## chemistry

a 5.0-L flask contains 0.60 g 02 at a temperature off 22degrees C.what is the pressure (in atm) inside the flask?

42. ## Financial Management

Proctor Micro-Computers, Inc. requires \$1,200,000 in financing over the next two years. The firm can borrow the funds for two years at 9.5 percent interest per year. Mr. Procter decides to do economic forecasting and determines that if he utilizes

43. ## grammar

tell me the parts of speech in this sentence "james and i talked about what to do" james and i are the subject (noun and proper noun) talked is the verb etc.. thanks

44. ## science

Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?

45. ## English

what does this saying mean? "The whole is greater than the sum of its parts"

46. ## math

what is the the diameter of a circle in km if the area is 5.65 miles? i don't know how to convert miles into km so please help.

47. ## college physics

The space shuttle releases a satellite into a circular orbit 550 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?

Find the image of P(5,-3)under each of the given transformations: 1. r x-axis(5,-3)? 2. Rorigin (-5,3)? 3. R90 (3,5)? 4.T 0,3 (5,0)? 5.r x-axis o T2,2 (7,1)? 6. r x-axis o r y=x (-3,-5)? 7. r y=x o r x-axis (3,5)? 8. R(2,2) o T5,-3 (12,-4)? Thank you!

49. ## algebra

charlie has 80 ml of a 15% acid solution how much of a 20% acid slolution must be added to create a solution that is 18% acid.

50. ## Chemistry

A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?

The library has 2,000 books. The books are sorted 500 children,fiction and nonfiction. There are 200 more fiction than nonfiction. How many fiction and nonfiction books are there? There are 950 fiction books and 550 nonfiction books is my answer how would

CASE 1—E-Biz Dreams Robert Downs has just completed a Master of Science degree in computer science at Major State University. He now wants to begin a new Internet business selling his services as a Web site maker for companies in his home city, St.

53. ## Chemistry

How much heat is required to warm 225g of ice from -48.6C melt the ice warm the water from 0.0C to 100.0C boil the water and heat the steam to 173.0C

54. ## Chemistry

Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g of KNH2 in 0.255 L of solution. You may ignore the reaction of NH3 with water. I already found the initial molarity, but I am

55. ## Biology

Do prokaryote cells and eukaryote calls both go through the M phase or does just eukaryote cells? Then what does prokaryote cells go through in the cell cycle? thanks:)

56. ## Math

Thirty percent of the liquid evaporated. If 560 milliliters remain, how many milliliters evaporated?

57. ## English-Ms. Sue

Have you ever seen the movie, "The Mighty", some people refer to it as "Freak the Mighty". I have a few questions on it, but before I post them here, I'd like to know if you've ever watched it. Thanks

58. ## Math

Find three consecutive integers such that the sum of the first and second is three mose than three times the third. When I did the problem,I got a negative answer. Does that seem correct? Did I make any mistakes?

59. ## Science

I know what a baseline is, but what baseline is used in astronomy? y do we need vary the length of baselines we use? is it the diameter of the earh's orbit? I really do not get the 2nd part.

60. ## College Accounting

A company had stock outstanding as follows during each of its first three years of operations: 2,500 shares of 10 %, \$100 par, preferred stock and 50,000 shares of \$10 par common stock. The amounts distributed as dividends are presented below. Determine

61. ## math

Write an equation of the line satisfying the given conditions. A line perpendicular to y=2+3x

62. ## Physics

A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic

63. ## Algebra

Solve. -8x-25= -27 and 2/3. My answer is x= -1/3. Is this correct? Thanks.

64. ## physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

66. ## home economics social and scientific

explain three food imports and three food exports in the irish food industry

67. ## geography

which of the following group of rocks can be easily dissolved in water? a,sandstone,granite and obsidian b.limestone,granite and basalt c.quartz,schitz and chalk d.limestone,chalk and sandstone

68. ## statistics

True or False A negative z score must yield a negative probability value.

69. ## Physics

The Nuclues of a Manganese atom has a net charge of +4E-18C. Its nearest electron is located 4E-10 m from the nucleus. What is the electrostatic force between the nucleus and the electron? (Hint:what is the charge of the electron? Not 1!) I believe that

70. ## Science

with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to 3000. *shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution *lackness of darkness

71. ## ecology

How do cultural influences lead to genetic changes in populations

72. ## Math

Can you please help me with this equation. we have to factor x to the power of three equal 25x.can u help me with it?

73. ## bussiness

I believe innovation will come from outside the mainstream music .... If you are a record producer or engineer, create other products to produce. ... If you think you can survive in the recorded music business, find something else to sell. .... and

74. ## Geography

#49. It has been said that Eastern Europe is a political region more than a physical region. Would you agree or disagree with this statement? You must provide a solid argument for your position. I'm not sure if I've posted this up already, but here's what

75. ## information technology

discuss the concept of teleconferencing and telecommuting.

76. ## physics

a standing wave oscillating at 115 Hz on a string. The distance d between the two walls equals 65 cm. What is the wave speed?

77. ## Science

as u line up ur thumb with an object in the distance and see ur thumb "jump" compared with the object, what did u do and what baseline did u use? Can someone please explain this to me more clearly, thanks

78. ## math

how would you build arrays for 7x4

79. ## Geography

What is the capital of Bulgaria?, and what is Bulgaria's most populated city?

80. ## Science

explain role of gravity in formation of a star. as a star starts to form as a nebula, small amounts of matter collide and stick together, becoming larger masses with increasingly stronger gravity. Am I correct? Please add any other info, thanks

81. ## geography

in the caribbean the potential for hydro electric power is greatest in which of the following groups of territories? a.Trinidad,Jamaica and Barbados b.Guyana,Jamaica and belize c.Trinidad,St.Lucia and St.Kitts d.Guyana,Barbados and the vergin island

82. ## information technology

what are coaxial cables.fibre optic cables and twisted pair cables?

83. ## information technology

describe the network of presentation of rind,star ,bus

84. ## social studies

who is the 19 president

85. ## Physics

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at

86. ## information technology

what are some negative impacts of sharing information on a network?

87. ## chemistry

Write the condensed structure for Methylpropyl ether Would it be C4H11O? CH3-O-CH3CH2CH3

For almost every news event, there are different opinions people can hold. Some people choose to send their opinions directly to the news source in the form of letters. In this lesson, you will scour the news for a topic on which you hold a strong opinion.

89. ## chemistry

If the following thiol containing compound is oxidized, what product will be obtained? CH3-SH --> Can someone please help me with this? The only examples my book has are with two S, so I don't know how to do it with just one S. Thank you!!

90. ## PHYSICS

The frequency of an ambulance siren is 700 Hz. If a pedestrian on the side of the road hears the siren at 756 Hz approximately how fast and in what direction is the ambulance moving? The answer is 90 km/h and towards the person..im not sure how to come to

91. ## information technology

discuss the following wireless transmittion medium: 1.satillite signal 2.micro wase link 3.infrared signal

92. ## English

As you suggested to me, I omitted all the question marks. Can you please check if all the sentences are grammatically correct? 1) Avoid repeating concepts over and over again and making personal. comments which you cannot substantiate. 2) Try to stick to

93. ## communication

can anyone tell me a tv show or movie that has misconceptions about listening?

94. ## Science-Jiskha teacher

Can any jiskha teacher who knows about this subject well, please look at my other previous science posts to check to see if they're correct and all, bacause someone named bob has been going through them, and just saying that they're right, but I'm not too

95. ## French

I need to fill out this paragraph with what my class calls "des petits mots" but I'm so confused! Could someone help me? "Les forêts __1__ nous avons le __2__ besoin __3__ trouvent en Amazonie. Cette vallée est un domaine naturel qu'il faut préserver

96. ## geography

one of the most recent benefits of the mountaineous regions of some caribbean islands,with their numerous rivers is: a.logging and recreation b.mining for gold and water sports c.eco-tourism and recreation d.hiking and hunting

97. ## algebra

s over 5 = 4 over 3

98. ## math

how do you factor problems like (w^3)(x^2)-(10w^3)(x)+25w^3?

Draw and label a rectangle whose area is represented by the following expression; (x+1) (x+5). Then write an equivalent expression in expanded form. I have absolutly no clue how to do that. :/

100. ## Algebra

I am confused by this problem. Solve: Clear fractions or decimal first. 7/3x-1/3x=3x+24/3-1/3+7/3x. I know that I need to gather all terms first. My answer that I came up with was: -23/17. I'm sure that answer is wrong. Can someone please help? Thanks.

101. ## Geography

what does balkanization mean?

102. ## geography

the wide looping curves which are found along parts of the courses of some rivers are called: a.meanders b.flood plains c.river bluffs d.ox-bow lakes

103. ## Chemistry

f the molecular mass for a chemical is 153.82 g/mol and the enthalpy of formation is -135 kJ/mol, the heat change will be kJ when 10.0 g of this chemical is formed.

104. ## Chemisrty

what mass of sodium phosphate is required to make 250mL of 0.10mol/L solution?

105. ## Chemistry

When 0.702 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 114C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

106. ## economics

When using 400 printers and 200 printing presses to produce books. A printer's wage rate is 20, and the price of printing press is 5,000. The last printer added 20 books to total, while the last press aded 1,000 books to total output. Is this an optimal

107. ## chemistry

A 355g sample of a saturated solution of KNO3(s) in water is prepared at 25.0 degrees C. If 50g H2O is evaporated from the solution at the same time as the temperature is reduced from 25.0 to 0.0 degrees C, what mass of KNO3(s) will recrystallize? i have

108. ## math

determine wether the following lines are parallel, perpendicular or neither. y=20x+45 and y=-1/20x+81 they are perpendicular right?

109. ## geography

a delta is a: a.wid river mouth where tides are experienced b.long narrow arm of the sea resulting from the submergence of a glaciated valley c.fan-shaped piece of land at the mouth of a river,resulting from deposition by the river d.funnel-shaped drowned

110. ## geography

natural banks which are sometimes built up by a river along the edges of its channel are called: a.river bluffs b.river cliffs c.levees d.slip-off slopes

111. ## physics

The current of a river is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible? Distance of river is 120 m.

112. ## physics 101

No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear windowpane. The 10% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is

113. ## geography

what causes deferred junctions on on rivers flood plains? a.swamps b.ox-bow lakes c.raised riverf banks d.river cliffs

114. ## math

what is 350m 60s 1km ? ____ X____ X _____ 1s 1min 1000m someone help me, i don't know how to do this problem.

115. ## physicsc

Two 7.4 resistors are connected in parallel, as are two 4.9 resistors. These two combinations are then connected in series in a circuit with a 11 battery. What is the current in each resistor? What is the voltage across each resistor?

116. ## Computers

To create a software environment, a programmer must define the _____ for each element in the environment. a)properties b)keys c)ranking d)order I think it is a) properties, but I am having a difficult time locating the answer in my text to make sure.

117. ## math

how do you simplify a number with aa fraction exponent such as : 32^1/2

118. ## English

1.What is the meaning of the term "hip hop feminist"? 2.Why are there no female voices in hip hop music today?

119. ## English

3.Why are there so many sexualized images of women of color in the media? 4.Can a man be a feminist? Why or why not?

120. ## geography

which of the following is correct sequence in the formation of an ox-bow lake? a.meander,cut-off,narrow neck of meander,flooding b.meander,narrow neck of meander, flooding,cut-off c.cuy-off,flooding,narrow neck of meander,meander d.narrow neck of

121. ## colllege physics

What is the distance from the Earth's center to a point outside the Earth where the gravitational acceleration due to the Earth is 1/45 of its value at the Earth's surface?

122. ## information technology

what is the network of presentation of rind,bus,star?

123. ## Accounting

The following questions contain numbers and you have to do different things with the number in each question. I'm not sure of the steps to take to figure out each answer. And, when I try to do what the book shows me I come up with wrong answers. So if you

good public speaking topics?

125. ## information technology

what is teleconferencing and telecommuting?

126. ## reimbutsement

services under the outpatient prospective system are paid based on?

127. ## physics

A 25.0 kg block is pulled 4.5 meters up a 20° rough incline by an applied force Fa = 200 N, directed up the ramp. The block starts from rest and has a final speed of 1.5 m/s. Find the following: a) The total work done on the block, Wtot =___ J b) The work

Daily demand for a product is 60 units with a standard deviation of 10 units. The review period is 10 days, and lead time is 2 days. At the time of review, there are 100 units in stock. If 98 percent service probability is desired, how many units should be

129. ## Physics

A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic

130. ## Maths

When a die is rolled three times, 1. what is the probability of three no.s being all different? 2. And is the opposite of that event two or three no's being the same?

131. ## math

how do you find possible dimension of a rectangular prism that has a volume of 320 in3

132. ## Maths

There is exactly the same number of lollies in 10 different colours in a jar. (If one lolly is picked out , the probability of

133. ## physics

The lowest note on a grand piano has a frequency of 28.1 Hz. The entire string is 2.00 m long and has a mass of 440 g The vibrating section of the string is 1.90 m long. What tension is needed to tune this string properly?

134. ## Math

There is exactly the same number of lollies in 10 different colours in a jar. (There are thousands of each lolly) If one lolly is picked out , the probability of being one colour is 1/10 and the second being same colour is also 1/10

135. ## information technology

what are satillite signals?

136. ## Math

If 3 people are asked what day of the week they were born, find the probability that i) 2 or 3 are the same. ii) only 2 people are the same. - is this 1/7 x 1/7 ?? If 4 people are asked what day of the week they were born, what is the probability that 2 or

137. ## Chemistry

I have a question about uncertainties. For example, I have 1466.5J +/- 0.6J. Do I match the sig digs (in which case it would become 1466.5J +/- 0.60713) or do I match decimal places? It makes sense to me to match decimal places, am I right?

138. ## amercian government

dramatic change in public opinion on basic issues is uncommon and is almost always a cosequence of?

139. ## math

Im good and all at math but I have a question this isn't tricky its like a math brain buster!Suppose you round each group of numbers to the nearest ten.which group of numbers all roundto the same number? A.423,418,426 B.376,378,384 C.255,253,251

140. ## economics

How could a tax cut achieve the same result? Would the tax cut have to be larger than the increase in government purchases? Why or why not?

142. ## chemistry

is CaO soluble

143. ## college

A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 74 kg driver. Determine the car

144. ## information technology

waht are infrared signals?

145. ## chemistry

When filling the buret with NaOH solution, you left an air bubble in the buret tip. The bubble was released durning your first KHP titration. Would the following technique error result in an erroneously high or reeoneously low calculated molarity of NaOH

146. ## Calculus

Could someone please help me with this question; Find the tangent to the curve y=x^2-8x+14 which slope is -2. Show that this tangent touches the curve y= -x^2-4x+4. Find the point of contact. Thank you.

147. ## ecology

who was the leader of the aztecs

148. ## information technology

what are coaxial cables?

149. ## math

if you had m^0g^0 would you leave it in that form or would the simplified version be 1?

150. ## social studies

what were 3 options for Lord Elgin and the supporting reasons and the consequences

151. ## information technology

what are fibre optic cables?

152. ## information technology

what are twisted pair cables?

153. ## Geography

what dose colonization mean

154. ## physics

At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution.

155. ## Science

Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and

156. ## Science

Hello, could someone help me with this question please? Explain how burning wood or coal to heat your house may contribute to global warming by altering the energy balance at the Earth's surface? Thank you

157. ## Chemistry

When 0.945 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 387C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

158. ## Science

I know what a baseline is, but what baseline is used in astronomy? y do we need vary the length of baselines we use? Is the baseline the diameter of the earth's orbit? I really do not get the 2nd part.

159. ## Chemistry

When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

160. ## Science

with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to 3000. *shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution *lackness of darkness

161. ## physical science

A driver starts his pack car and withinn 5 seconds reaches a velocity of 55km/h as he travels east. What is his acceleleration?

162. ## teaher aide

which of the following class arrangement works best for individual study traditional horseshoe modular y-shaped

163. ## Physics

A crate full of artichokes rests on a ramp that is inclined 10.0° above the horizontal. Give the direction of the normal force and the friction force acting on the crate in each of these situations. (a) The crate is at rest. Normal Force : 1.perpendicular

Hi What is the hidden word in the following letters- panirlea Thanks

165. ## Chemistry

A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.

166. ## PHYSICs

You blow a whistle of f=909 Hz as you move towards a wall. The fbeats you hear from the whistle is 14beats/second. How fast are you moving towards the wall?

167. ## eng college

Can someone please help revise. It is a proposal for a research paper! Thank You! Work and family are both central to our way of life. Finding a balance between the two is an issue of importance to men, women, and employers. Therefore, I will argue that

168. ## Biology

40. Explain two benefits that a child affected by a genetic disorder could expect from genetic counseling and testing. Need help with this Thanks -MC

169. ## social studies

Back during John F. Kennedy's time in office has president what were the positives and negatives of pursuing diplomacy in Cuba, blockading Cuba, and air strike and invading Cuba?

170. ## Chemistry

If 5.00 mL of HCl require 4.59 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl?

171. ## Chemistry

A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

172. ## 5th Grade Social Studies

What are the names of the first 3 English settlements?

173. ## social studies

the appalachian mountain extend north from the united states into the canadian provinces of ______,______ ______,______ _____ _____,and _______

174. ## social studies

the great plains of canada are found in the canada provinces of

175. ## geometry

A rectangle is twice as long as it is wide. Its perimeter is48 cm. Find its dimensions

176. ## Geometry

Given: X, Y, and Z are the midpoints of the sides of triangle ABC. Find rhe ratio of the area of triangle XYZ to the area of triangle ABC

177. ## Wrld Hst

What did Margaret Cavendish believe/ talk about in her book Philosophical Fancies? thanks:)

178. ## math

Factor the expression on the lift side of each equation. Then solce the equation: 8xcubed-27=0... also please show work so I understand how you got the answer.

179. ## Chemistry

In a run involving 1.00 mL 2.50 * 10^-3 FE and 1.00 mL of 2.50 * 10^-3 SCN solutions made up to a total volume of 10.0 mL, the concentration of complex formed at equilibrium was found to be 4.44 * 10^-5. What are the equilibrium concentrations of Fe^3+ and

180. ## social studies

what are the causes and effects of the Opium War?

181. ## Chemistry Lab

5.00 mL of .00500 M ferric nitrate is added to 5.00 mL of nitric acid and 10.0 mL of .00250 M thiocyanate solution. Calculate the intial Fe^3+ concentration before reaction. So how do I go about doing this?

182. ## physics

what type of energy does an object at rest, but raised above the ground have?

183. ## Physics

While blowing its horn of f=524 Hz a car accelerates at 0.8m/s^2 the car starts from rest by your side and moves away. Find the time it taked for the frequency you hear to decrease by 5%. Hint: Don't forget to include the time it takes for sound to reach

184. ## algebra

how do i solve this? 16x^2,40xz^2,72z^2 I know its 8z GCF, but how is it done?

185. ## Algebra

Could someone please help me with this problem? Solve using the multiplication principle. Don't forget to check. -z=35. The solution is z=

186. ## Statistics

True or False Probabilities may take on negative values only when the events are occurring less than 50% of the time.

187. ## social studies

is it new brunswick,quebec,prince edward island,and ladrodor and thank you ms.sue

188. ## Statistics

True or False Probabilities may take on negative values only when the events are occurring less than 50% of the time.

Write 3 different improper fractions that equal 4 and 2/3

190. ## History

How did the missouri compromise attempt to settle the debate over the future of slavery in the growing american republic? I have to write an essay and I just want to get an idea.

191. ## French immersion grade 5 math perimeters

My child needs to write out equations for various shapes on grid paper, using French. Finding the perimeter eg:P=(L+L)x2 also finding the Area. The shapes are complex, and I am lookin for help in figuring out how to write the equations properly, using the

192. ## Physics

An automobile tire contains a certain volume of air at 30 psig and 70 °F. The barometric pressure is 29.50 Hg. If due to running conditions, the temperature of air in the tire rises to 160 °F. What will be the gauge pressure? Assume that air is an ideal

193. ## Chemistry

What major product will be obtained if the following alcohol is dehydrated: CH3 | CH3CH2CCH3 | OH I tried to do it and this is what I got: CH3 | CH3CH=CCH3 Is this correct?

194. ## social studies

what did the British goverment need to tax the coloines

195. ## science

why does mold grow faster in warmer temperature

196. ## Chemistry

CORRECTION: (sorry!) What major product will be obtained if the following alcohol is dehydrated: CH3 | CH3CH2CCH3 | OH (the CH3 is connected to the 3rd Carbon from the left and the OH is attached to the same Carbon) I tried to do it and this is what I got:

The electric field between two parallel plates connected to a 40 V battery is 1550 V/m. How far apart are the plates?

198. ## Antrophology

i need help on the this assigments can some one please help me and thanks. Are [r] and [I] allophones of one or two phonemes? A) Do they occur in any minimal pairs? B) Are they occur in any complementary distribution? C) In what enviroments does each

199. ## Algebra

Solve using the multiplication principle. -4/5x=16/35. (5)-4/5x=16/35(5) -4x=180/175 Now I'm lost. What do I do now? Thanks.

200. ## Chemistry

How will you prepare 10mL of .050 M HCl from a .10 M solution of HCl?

201. ## Science

Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that

nick had 1 and 3/4 gallon of milk how many pints of milk does nick have hint there are 8 pints in 1 gallon

can someone please revise?? only a proposal Work and family are both central to our way of life. Finding a balance between the two is an issue of importance to men, women, and employers. The current work standards in United States and the lack of family

204. ## ratio

if 3 out of every 7 student are boys , write equivanent fractions that can be used to determine how many out of 84 are boys. use a variable to represent the number of boys help me please i need it for tomarrow

205. ## English

I forgot to include the following sentences. Thank you a lot! 1.Avoid repeating concepts over and over again and making personal comments which you cannot substantiate .. (?). Try to stick to the question. 2.Antony doesn’t care about the good of Rome (is

Deduct Social Security, Medicare and FIT (by percentage method) from earnings. SS rate is 6.2% on 97,500 and 1.45% for Medicare. Richard is \$1000 below the maximum level for SS earnings. He is married, paid weekly and claims 2 exemptions. What is Richard's

207. ## English

How should I start an example essay?

208. ## geometry

what is the area of a regular quadrilateral (square) that has a radius of 10 square root of 2. The 10 square root of 2 is the x^2 (the hypotenuse) part of a 45-45-90.

209. ## English

I nees help with infinitive phrases and if it is a noun, adj., or adv. My question is: The political prisoner refused to denounce his principles.

210. ## English

Could you check this for me and give me some ideas on how i could expand my writing? The Extra Yard Plus size women tend to make fashion less of a priority and more of a chore. Finding fashionable plus size clothing has become close to impossible, with the

211. ## Math

What are the similarities and differences between functions and linear equations? How do you graph functions on a coordinate plane? Is there an instance when a linear equation is not a function? Provide an example. Write a function for your classmates to

212. ## Physics

Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

213. ## Physics

Mercury is poured into the open end of a J-shaped glass tube, which is closed at the short end, trapping air in that end. How much mercury can be poured in before the mercury overflows? Assume air to act like an ideal gas. The long and short arms are 1 m

If you get 1 free car wash every 5th wash and you wash your car once a week,how many free washes would you get in a year? Would the answer be 10 washes? Number of weeks divided by 5?

215. ## Calculus

Could someone please help me solve this If f(2)=f'(2)=g'(2)=g(2)=2, find (fg)'(2). How would I solve this, I am completely lost as to what I would do.

216. ## Child Day Care Management

The formation of children's core values is most strongly influenced by: a) peers b) family c) elemantary school teachers d) child care providers

217. ## accounting

These questions are so confusing. So I was wondering what are each of the formulas to solve each question or what steps I need to take to complete them? I've been trying and I can't find the correct answer. ____ 11. The Dayton Corporation began the current

218. ## Science

Impact of California Water Wars on the Owens Valley?

219. ## Child Day Care Management

The most developmentally appropriate activity for a group of eleven-year-olds would be: a) coloring b) reading silently c) playing Twenty Questions d) surfing the internet

220. ## physics

Consider an object on which the net force is a resistive force proportional to the square of it's speed? For example assume the resistive force acting on a speed skater is f = -kmv^2, where k is a constant and m is the skater's mass. The skater crosses the

221. ## arithmetic

A job is shared by 4 workers, W, X, Y, and Z. Worker W does 1/4 of the total hours. Worker X does 1/3 of the total hours. Worker Y does 1/6 of the total hours. What fraction represents the remaining hours allocated to person Z?

222. ## english

can somepne help me on parallel structure? i really don't get it. can u make this a parallel a structure because i don't know how. Do you calue the democratic right to freedom of speech? Maybe you want to announce something. Or is there an issue you think

223. ## Science

Thanks for the applet.Am I right in thinking blackbodies radiate at all wavelengths but only very little at short wavelenghts if cooler?

224. ## PHYSICS

Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5 mC and mass 75. mg accelerates under the effects of the electric field caused by the disk, from a point at a perpendicular distance from the center of

225. ## computer history

what are all the anser

226. ## PHYSICS

a 123 kg man space finds himself 60 m away from his space ship and wants to get back. he holds a 2kg space gun which fires 5.00g bullet at a rate of 1500m/s. if he fires a single bullet in a direction directly away from the spaceship, how long would it

227. ## science

What has more mass a elephant , mouse or jumbo jet?

7x+3-4x

229. ## physics

A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the car on the 74 kg driver. Determine the car speed at which the normal force on the driver equals zero.

230. ## To; Ms. Sue

Ms. Sue have you heard of the "The knights of the round table"?

231. ## History

i need a good website to find stuff on catherine the great

At what height is an object that weighs 490 N if it gravitational potential energy is 4900 N-m?

233. ## programming

Week 3 - Expand Pseudo Code The accounting office indicated the code must be able to handle overtime hours. Add functionality to your pseudo code so that if more than 40 hours are worked, the hours over 40 receive time and a half (1.5 * pay rate). Your new

234. ## math

write a variabe expression to describe the rule for each sequence. then find the 100th term. 100, 200,300,400.....

235. ## Math

What is width of a billboard that has a height of 30 ft?

236. ## college

if distance is 59 cm and the weight is 3 kg then what is the distance when the weight is 9 kg

237. ## 9th grade Social Studies

what is the climate and the population&cities in the hudsons bay lowlands & appalachian region ?

238. ## math

z varies with w and z=30 when w=0.6 what is the constant proportinal? what is z when w=10

do all rocks come frome lava

240. ## math

One year interest of \$500 on an investment of \$5000

241. ## college

Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1550 kg.

242. ## us history

Write an Essay about the different perspectives that a chinese native and a christian missionary might have had on the Boxers rebellion

243. ## English

I really need help with my english homework which has to do with infinitve phrases that are noun, adj, or adv. My question is: Prospective team members must promise to attend regular practice sessions.

244. ## english

the clerk will wait on ( whom,who,whomever,whoever) is next. my answer is (whom) is this right

245. ## math

Factor the expression on the left side of each equation. Then solve the equation. 64x^3-1=0

246. ## physics

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at

247. ## mathy

if you had m^0g^0 would you leave it in that form or would the simplified version be 1?

248. ## math

if given y=6x^4 if x doubles what happens tp y?

249. ## Grammar

What is the type of infinitive phrase is it? a noun, adj., or adv.? The hill above the town is the best place to watch the fire works.

250. ## math

if given ..,. y=4x^-4 if x triples what happens to y?

251. ## ESL

PRESENT PERFECT AND SIMPLE PAST WRITING

252. ## Social Studies

What were the conditions of the mines during the Industrial Reolution? Why did so many women want to work in the mines without clothing and have heavy belts around their waists and chains between their legs?

253. ## biology/science

Biotechnology allows us to use living organisms or their processes for human needs or purposes. Currently, this topic includes such general examples as cloning, stem cells (adult, umbilical cord, and embryonic), DNA fingerprinting, biological warfare,

254. ## Accounting

____ 2. As part of the initial investment, Omar contributes accounts receivable that had a balance of \$25,000 in the accounts of a sole proprietorship. Of this amount, \$1,150 is completely worthless. For the remaining accounts, the partnership will

Solve 3-3 csc x = 17 for (theta) is less than or equal to x is less than 2(pi); give answer to the nearest 100th of a radian

256. ## physics

a particle that has a charge of +12.8E-19 C and a mass of 8.0E-27kg is moving along the +x axis at a constant speed of 2.0E10 m/s. it then enter a region where the eletric field of 300 N/C is directed along thr +x axis. calculate the particles displacement

257. ## Science-drwls

Y r the distances to the planets given in km? I've already answered the 2nd part to this question, and this is the fist part. I think that the distances to the planets are given in kilometres because all the planets aren't that far away from eachother that

258. ## science

how will ocean energy be used

259. ## Chemistry

How much heat is required to vaporize 343g of liquid ethanol at its boiling point? ΔHvap+38.6 Kj\mol

260. ## Chemistry

how much heat is liberated by the combustion of 206 grams of hydrogen? ΔHcomb= -286kj/mol

261. ## geography

teh type of erosion mainly found on the upper course of rivers are: a.hydralic action,lateral and abrasion b.hydralic action and solution c.abrasion and solution d.hydralic action and attrition

262. ## Question about the board

I am looking at many questions that just have 2 or 3 words to them and responses that talk about fixing certain paragraphs. Am I missing something or is the board messing up?

263. ## physics

At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the spaceship's diameter is 30 m, and give your answer as the time needed for one revolution

264. ## just wandering

Are there like new words being created everyday? Are there new dictionary terms/words being created everyday?

265. ## College Algebra

Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not?

266. ## us history

In the homestead act - Who is entitled to secure a grant of land from the Federal Government? Can women secure such a grant in their own names, and if so, how?

267. ## social studies

Help!!! I need help woth Latin definion and finding the word to go with it .What is a good website to use? or just any help it this!!

268. ## Algebra

Can you please explain this problem to me? Determine whether 30 is a solution of the equation x-13=14. Is 30 a solution? My answer is no. x-13=14 30-13=14 No, not true. Thanks.

269. ## Math

An instrument store gives a 10% discount to all students off the original cost of an instrument. During a back to school sale an additional 15% is taken off the discounted price. Julie, a student at the local high school, purchases a flute for \$306. How

270. ## Chemistry

A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?

271. ## math

write each number as a power of 2 1.1/8 2.square root of 2 3.3/4 how do you do it???

272. ## psychology

how is erikson's development theory applicable to children today? Did he use science to back up his theory? Could you help me find a good site. None that I've looked at have been able to help me with my essay.

273. ## Science

with 1*10 to the power of 22 stars in the sky. I can't put 22 in small form above 10, so that's why I'm wording it by saying to the power. So: with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about

274. ## biology

the adaptations of land dwelling organisms for getting oxygen show a trade off of two needs. What are they?

275. ## algebra

given f(x)=2x^2-4 and g(x)=5x+3 1. f(a) 2. f(3a) 3. f(a+b) 4. f(x+7) 5. f(5x+3) 6. g(f(x))

276. ## Psychology

How much time and energy do you invest in making sure you aren't guilty of the fundamental attribution error or the self-serving bias?

277. ## Science

Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and

278. ## World History

How did colonies with large European populations differ from other colonies?

279. ## Help !! Mrs.Sue!!!!!

Help!!! I need help woth Latin definion and finding the word to go with it .What is a good website to use? or just any help it this!!

280. ## Math

3x-2 over 2 (fraction format) -x over 4 (fraction format) = 15. I know that I need a LCD but when I tried 2 it didn't seem to work right. the only hint my math teache gave was the answer has to be a mixed number. Can anyone help?

281. ## English

What are some tips to compare and contrast a poster?

282. ## English

Thank you for your last corrections. Can you check these statements, too? Thank you very much. 1)They finally arrived on an island, where once had lived the witch Sykorax and which was inhabited now by her son Caliban and Ariel, the spirit of air.

Please help. I have no idea how to do these 4 homework problems. 1- How many milliliters of 0.140 M HCl are needed to completely neutralize 42.0mL of 0.106 M Ba(OH)2 solution? 2-How many milliliters of 0.123 M H2SO4 are needed to neutralize 0.250 g of NaOH

284. ## physics

A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 376 nm. (a) What is the speed of light in this solid? (b) What is the light's frequency in the solid?

285. ## algebra

What are the similarities and differences between functions and linear equations?

286. ## spanish

what are the direct object pronouns in the following sentence Buena, hoy hacemos una ensalada de frutas, con naranjas, un melon y uvas. vamos a sazonarla con jengibre y menta. Aqui tengo las naranjas las he pelado y las voy a cortar en rodajas.

287. ## geography

what are the branches of the river within the delta called?

288. ## English

I'm writing a persuasive essay about how women with HIV should not be allowed to have children. Can you please help me find some reliable sources about my topic? Thank you.

289. ## Math

When Clint began his pursuit, Sue was already 60 miles ahead. If Sue travels at 40 mph and Clint travels at 60 mph, how many hours will it take Clint to catch up with Sue? It is a distance problem I do know that. I am not sure what type. Either + or =. I

290. ## math

the height, in feet, of a free-falling object t seconds after being dropped from an initial height s can be found using h=-16t^2+s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object to land on the ground?

291. ## English

Helllo I writing a poem about my p.e.team,can you please read my work and say what you think about it.Thanks I was delighted when I found out I was in Catherine Because Green was my favourite colour.

292. ## Science

clarify why parallax just works for stars that r less than 200 light years away. It is because of the smaller angles involved in the greater distances, which cause to many observation errors for calculations to be valid. Please correct me if I'm wrong,

294. ## math

Solve. The total sales made by a salesperson were \$25,000 after 3, months and \$68000 after 23 months. Predict the total sales after 42 months. 25000=3months 68000=23 months x=42 months how do I do this?

295. ## geography

some material or load of the river is transported by dumping or hopping from one point to another by force of the water.this is called: a.traction load b.saltation c.solution d.suspension load

296. ## math

Without graphing, identify the slope and the y-intercept. x-5/3=y/3 first you set it up as y=mx+b -y/3=x+5/3 how do you get rid of the 3's?

297. ## Misc

Just wondering, after you become widowed, do you still put 'Mrs.' in front of your title, or not? -MC