# Questions Asked onFebruary 8, 2011

1. ## finance

A firm has beginning inventory of 300 units at a cost of \$11 each. Production during the period was 650 units at \$12 each. If sales were 700 units, what is the value of the ending inventory using LIFO? Note: LIFO, last-in, first-out represents that the

2. ## Math

A toy manufacturer needs a piece of plastic in the shape of a right triangle with the longer leg 5cm more than the shorter leg and the hypotenuse 10 cm more than the shorter leg. How long should the sides of the triangles be?

3. ## chemistry

calculate the molarity of the solution- 0.56 mole of BaCl2 in 100.0mL of solution.

4. ## I need an answer--molecular/electron geometry

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd

Consider the freight train. Suppose 15 boxcars pass by in a time of 14.0 s and each has a length of 14.0 m. (a) What is the frequency at which each boxcar passes? (b) What is the speed of the train?

6. ## Chemistry 219

An amount of 1.250g of an alloy (90% Ag, 10% Cu) was treated with HNO3 and H2SO4 to form Ag2SO4 and CuSO4. The solution was then treated with Cu wire to precipitate silver. The resulting solution was treated with excess zinc to precipitate copper. (show

7. ## Algebra 1

Explain the differences between solving these two equations: •log3(x - 1) = 4 AND log3(x - 1) = log34 I think it has to deal with the formulas?

8. ## chemistry

why would it not be useful to just use pure ethanil or pure ethylene glycol as aN ANTIFREEZE SINCE THEIR NORMAL FREEZING POINTS are -114.1 degrees celsius and -12 degrees celsius respectively

9. ## chemistry

If you add 50 g of sylvite in 100 ml of water at 60 ° C, the resulting solution will she unsaturated, saturated or supersaturated? You prepare a solution and you add 50 g of potassium nitrate to 100 ml of water at 50 ° C. What type of solution are you

10. ## Chemistry

Given the following equation: 2KClO3---> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?

11. ## Math

The following is a list of 11 measurements: -2,82,87,-1,-51,-2,53,87,-20,32,35 Suppose that these 11 measurements are respectively labeled . (Thus, is labeled , is labeled , and so on.) Round your answer to at least two decimal places.

12. ## Algebra

Tom drove to Easton from home at 50 mph. His return trip took 30 minutes longer because he ran into traffic and could only drive 45mph. How many miles is it from Tom's home to Easton? Express answer as a decimal.

13. ## match

the sum of two times a number and 5 is 11? equation form.

14. ## Math

Sally's age is 12 years plus half her age. How old is she? Billy is twice as ld as Sally was when billy was as old as Sally is now. And the total ages is 28 how old are they?

15. ## ENGLISH

Please make the correction so that my paper is error free. Dear Ms. Powell Thank you for your order. The enclosed invoice indicted that the shipment was sent under separate covers. This shipment includes all volumes except the final volume that is being

16. ## Chemistry

Calculate the molar solubility of MgF2 in 0.08M MgCl2 at 25 degrees C.

17. ## Vectors

Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use

18. ## chemistry is this answer right

115 grams of KCl is dissolved in 750 ml of water. what are the molality, molarity, mole percent, % mass, ppm by mass. what would the freezing point and boiling point of that solution assuming Kf of water is 1.86 degree celsius/m and Kb is .0512 degree

19. ## Math (Trigenometry)

Write f(x)=x^4-12x^3+59x^2-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I

What is the symbiotic relationship between scallops and sponges?

21. ## Math

Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear is different from solving a linear equation.

22. ## Calculus

To estimate the height of a bridge, a man drops a stone into the water below. How high is the bridge (a) if the stone hits the water 3 seconds later? (b) if the man hears the splash 3 seconds later? (1080 ft per second for speed of sound)

23. ## chemistry

Given: hexane- -density at 25 degrees Celsius (.660g/ml) -Vapor pressure of pure substance at 25 degrees Celsius (150 torr) -heat if vaporization (21.0 kj/mol) -55 mL What mass of hexane vaporizes at 25 degrees Celsius?

24. ## Chemistry

FeSCN2+ -> Fe3+ + SCN- Solution is initially dark red. If some Ag+ is added to form AgSCN. what happens to position of equilibrium? what happens ot the color?

25. ## pre-algebra-is my answer right

Today only, a desk is being sold at a 27% discount. The sale price is \$219.00 . What was the price yesterday? Is it \$300.00

26. ## chemistry

As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X(cy) vapor), is cyclohexane?

27. ## Equivalent. Fraction

What is 6/12 in a equivalent fraction

29. ## Statistics

Data in 1980 showed that about 48% of the adult population had never smoked cigarettes. In 2004, a national health survey interviewed a random sample of 5000 adults and found that 54% had never been smokers. Create a 95% confidence interval for the

30. ## calculus

find the dimensions of the rectangle of maximum area that can be inscribed inside the ellipse (x/4)^2+(y/3)^2 = 1

31. ## chemistry

standard enthalpies of formation H20(l) = -286 LiOH(s) = -487 standard enthalpies of solution for LiOH(s) to split into it's ions is 21 all values are in KJmol-1 Use the data given to calculate a value for the enthalpy change for the reaction of lithium

32. ## math

Nathan's age can be described as 5 more than 3 times his son's age. If his son's age is represented by the variable "s", write the algebraic expression representing Nathan's age using "s".

33. ## Math

Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear inequality is different from solving a linear equation.

34. ## CRIMINAL JUSTICE

Discuss the three types of management styles that are reviewed in your course materials (Scientific Management, Human Relations Management, and Systems Management). * Which style do you believe would be the most effective to use in the criminal justice

35. ## Math

Hey can you please explain Fibonacci numbers in the simplest way possible because I really don't get them. Like i know the sequence goes 1,1,2,3,5,8,13,21, etc...But we have to fill in a table by plugging the numbers 1-9 in using the equation Fn+1. Please

36. ## Chemistry

2 CO (g) + O2 (g) --> 2 CO2 (g) The mechanism below has been proposed for this reaction; (slow) O2 + CO --> CO2 + O(fast) O + CO --> CO2 Based on this mechanism what is the rate law for this reaction?

37. ## physics

The solar wind is a thin, hot gas given off by the sun. Charged particles in this gas enter the magnetic field of the earth and can experience a magnetic force. Suppose a charged particle traveling with a speed of 9.80 x 10^6 m/s encounters the earth's

38. ## Math (Trigenometry)

Find two positve real numbers whose product is a maximum and whose sum of the first number and four times the second number is 120. This is as far as I've gotten in solving it. *first number is x. *second number is y. *xy=maximum, which is unknown.

39. ## chemistry

What is the name of the following compounds? A)CO B)HCI2O

40. ## chemistry

Calculate the number of moles and atoms. A)64 gm of O2 B)58.9gm of CI C)90.5gm of (NH4)2SO4 D)243gm of Mg2 Please help i have NO CLUE HOW TO DO THIS THANKS!!!

41. ## To John

If you have that question about the N2O4/NO2 equilibrium I can help if you re-post. I can't find it. I think you posted it Saturday but it may have been Sunday.

42. ## algebra

It has been found that adult height can be accurately predicted by taking specific measurements of children and multiplying them by a scale factor obtained by analyzing large representative samples. Twelve-year old Jean reads that female height will be

43. ## geometry

Rectangle ABCD has diagonals AC and BD. If the diagonal lengths are AC = 36 cm and BD = (3x + 3) cm, find the value of x

44. ## maths

Can any one help with the following please: Solve the initial-value problem: problem: dy/dx: 4(3cos(6x)-1)/1+2x-sin(6x) y=12 when x=0

45. ## fizik asas

The earth travels in a nearly circular orbit about the sun. The mean distance of the earth from the sin is 1.5¡Á1011 m. What is the approximation speed of the earth in its orbit around the sun?

46. ## Accounting

Starfax, Inc., manufactures a small part that is widely used in various electronic products such as home computers. Operating results for the fi rst three years of activity were as follows (absorption costing basis): In the latter part of Year 2, a

47. ## chemistry

calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change in freezing point of water. solutes are Al2(SO4)3, KBr, Mg(NO3)2

48. ## chemistry

Consider the following multistep reaction: C+D-> CD2 (SLOW) CD2+D->CD3 (FAST) C+3D->CD3 (OVERALL) Based on the mechanism determine the rate law for the overall reaction??

49. ## Chemistry

What is the concentration of a solution of 1.70 g of AgNO3 dissolved in enough water to make 250 mL?

50. ## biology

using lactose and a ph value of 3,5,7,9,11, Why was there no increase in the reaction rate with 8.0 g. of substrate as compared to 4.0 g. of substrate? What would you need to add to see an increase in the reaction rate with 8.0 g. of substrate?

51. ## physics

Two blocks connected by a string are on a horizontal frictionless surface. The blocks are connected to a hanging weight by means of a string that passes over a pulley as shown in the figure below, where m1 = 1.75 kg, m2 = 2.85 kg, and m3 = 4.95 kg. (a)

52. ## Science

in a true solution, the dissolved particles (1)are visible to the eye (2)will settle out on standing (3)are always solids (4)cannot be removed by filtration

53. ## ENGLISH

What do I do forr the title of a book because in the second paragraph American Literature Masterpieces is the title. Also pllease check for any other errors. Would you be interest in owning one of the most important books collection in our nation history?

54. ## beginning algebra

Factor: -8w+uw+vu-8v

55. ## Math

Find the indicated one-sided limit, if it exists 1.lim f(x) and lim f(x), where x->0^+ x->0^- 2. f(x) = [2x if x is less than 0] [x^2 if x is greater than or equal to 0]

56. ## Math

mark knows that his yard is 2 1/4 times as long as it is wide. which equation shows the length, in feet, of the fence that goes all the way around the yard if mark measures the width as w feet? 2 1/4 w feet

57. ## History

What are two other social changes that occurred during 1865 and 1945 that's not on this list: The Fourteeth Amendment Railroads City life and City culture The political machine Wilson's Fourteen Points Progressivsm World War I Pearl Harbor World War II

58. ## physics

how do types of nuclear radiation differ in electric charge?

59. ## physics

3. If a man does 300 j or work by pushing a table 2.0 m across the room, what was the magnitude of the applied horizontal force?

60. ## trigonometry

can you correct the rest for me please? Express each as a function of theta: a. sin (270deg + theta)= cos theta b. cos (pi + theta)= -cos theta c. tan (810 + theta)= ????? d. sin (theta - 180)= -sin theta

61. ## Math

What are is the 4 step process when finding the slope of the tangent line at any given point?

62. ## math

i am a number between 20 and 30. put me into 6 equal groups.ther is a even number in each group and one is left over. what number am i?

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is

64. ## science

what are the defence and offence of crocodile?

65. ## Calculus

the equation represents for a recurrence relation, Mt+1= 0.75Mt+2 with Mo=5

66. ## Algebra II

Solve each equation. Check for extraneous solutions. Solve:|x+5|=3x-7 My answers were: x=6 and x=.5 I don't think they are right though, but I should get 2 answers right???....Help!

67. ## Chemistry

A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3¯ ] in the second solution? A) 0.0100M B) 0.0200M C) 0.0300M D) 0.0400M E)

68. ## Chem 219

If 48.9g of barium chloride dihydrate, BaCl2.2H20, was treated with excess silver nitrate solution. (show formula) a). how many moles of silver chloride precipitated? b). how many grams of silver chloride precipitated? thank you!

69. ## computer science 100

which of the following are used in a traditional mainframe computer environment

70. ## PHYSICS

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side

71. ## poetry

whats the meaning of the poem SOMEWHERE TO PARIS BY RICHARD BLANCO?

72. ## human resource management

Informative and positive messages are not necessarily short: Instead , the length of a message depends on all the following EXCEPT:

73. ## College Chemistry

Molarity of .100 mole of urea (CH4N2O) in 250.0 mL of solution

74. ## chemistry

2.36 L of an aqueous solution containing 39.0 g of KCl dissolved in pure water is prepared. The molarity of the solution is?

75. ## english 2

I need to create a list of power shifts, starting from the opening scene of Act I. It's supposed to follow the exchange of power throughout the play. I have read the play two times already and still need help.

76. ## science

what is the lifecycle of the crocodile?

77. ## HUMAN RESOURCE MANAGEMENT

When writing informative and positive messages, you should include reader benefits when:

78. ## beginning algebra

In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 8A (amperes), the resistance is 15 ohms. What is the current when the resistance is 4 ohms?

79. ## human resource management

Which of the following would not be an informative or positive message? a. Summary b. Claim adjustment C. Transmittal d. Direct request

80. ## physics

A car has an acceleration of 16 pc/y2. This value can be CONVERTED into which of the following units?

81. ## Satistics

Is this problem correct Answer: 0.90^5 = 0.6562

82. ## science

what are the defers and the offence of the crocodile?

83. ## Chemistry

we created a nickel coordination compound made of nickel and chlorine and we used silver nitrate to titrate it. If the silver nitrate solution had been exposed to light and reacted with chlorine, would the calculated percent of nickel been higher or lower

84. ## physics

At New York City, the earth's magnetic field has a vertical component of 5.2 10-5 T that points downward (perpendicular to the ground) and a horizontal component of 1.8 x 10^-5 T that points toward geographic north (parallel to the ground). What is the

85. ## physics

A student applies an upward force of 49 N to a 5.4-kg physics textbook. Find the book’s acceleration (positive for up, negative for down).

86. ## pre-algebra

If I have Y=-3X+21 do i simplify or keep it just the same???

what are similarities and differences between y=x line and a power funtion with an odd degree? i wrote that: similarties both have funtions pass through the orgin. both have one y int and one xint. both have the same ending. both have the same domain and

88. ## Chemistry

Reactions can be speeded by increasing the proportion of reactant molecules which collide with proper orientation. This can be accomplished by......... A)compressing the reactant mixture. B) heating the reactant mixture. C) addition of a catalyst. D)

89. ## Learning Chater School

Dana has a piggy bank(she is just starting to save money in her piggy bank). 1- All of the coins in her bank expect two quarters. 2- All of the coins in her bank except two are nickels 3- All ofthe coins in her bank except two are pennies . How much money

90. ## Physics

In two successive chess moves, a player first moves his queen four squares forward, then moves the queen five steps to the left (from the player’s view). Assume each square is 2.0 cm on a side. Using forward (toward the player’s opponent) as the

91. ## statistics

Assume the IQ's of men and women can be described by a Normal model with a mean of 100 and a standard deviation of 15. For the first part: What percent of people do you expect to have IQ's over 120?

92. ## Math

The following is a list of 11 measurements: -2,82,87,-1,-51,-2,53,87,-20,32,35 Suppose that these 11 measurements are respectively labeled. x1,x2¡¦¡¦¡¦¡¦¡¦x11.(Thus,-2 is labeled x1,82 is labeled x2 and so on.) find ¢²_(i=1)^11¢Æx1/49 Round

93. ## a&p

which of the following would help clear the body of toxins and prevent poison- buffering,pH partitioning,ionization,denaturation, fermentation.

94. ## algebra

Five socks colored blue, brown, black, red, and purple are in a drawer. How many combinations of three socks can be randomly selected from the drawer?

95. ## Math

Can please someone check my answer: a)385 data loss incidents took place b)110 million people were affected by personal data loss incidents c)3% of all data loss incidents were caused by hard copy theft/loss d)20% of all data loss incidents were caused by

96. ## algebra

Given a cube with volume 30 cubic centimeters, find the number of centimeters in the length of an edge.

97. ## Calculus

A cubic polynomial function f is defined by f(x) = 4x^3 + ax^2 + bx + k? A cubic polynomial function f is defined by: f(x) = 4x^3 + ax^2 + bx + k where a, b, and k are constants. The function f has a local minimum at x= -1, and the graph of f has a point

98. ## Chemistry

Ln( K/ 4.90*10^-4) = 1.56189 Solve for K

99. ## Physics

A certain car is capable of accelerating at a uniform rate of 0.85m/s2. What is the magnitude of the car's displacement as it accelerates uniformly from a speed of 83km/h to one of 94km/h?

100. ## Algebra

A revolving restaurant rotates one complete turn every 56 minutes. In the 21 minutes it takes to eat the peaches jubilee dessert, through how many degrees does the restaurant revolve?

101. ## Algebra

Evaluate 1/2^-2 x^-3 y^5 for x = 2 and y = –4

102. ## algebra

According to the world almanac, in 1990 there were 41,223,804 students enrolled in full-time day schools and there were 2,397,351 classroom teachers for these students. On average, how many pupils were there per teacher? Round answer to the nearest tenth.

103. ## Algebra

I need toIs the following pair of lines parallel or perpendicular? Prove your answer. 2y – x = 2 y + 2x = 4 can you explain how to break this down ...

104. ## statistics

For the numbers –6, –3, –8, and –1, which of the following that includes all four could be a good class?

105. ## Science

What is the mass of saturated solvent of Potassium nitrate at 80degress in 100g of water

106. ## writing

Compare and contrast your abilities as an academic writer now as opposed to when you began your studies at the University of Phoenix. Using four comparatives and four superlatives within your responses, explain what has led to these changes and what

107. ## science

What does it mean to say that a variable’s categories may be collapsed? What should the researcher keep in mind when collapsing categories for analysis?

108. ## algebra

50-word response to the following: How do you know when an equation has an infinite number of solutions?

Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

110. ## algebra

y = -4x - 2 find the coordinates of the points (1),(-1),(-3).

111. ## Physics help on the TI-84 calculator

Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

112. ## algebra

50-word response to the following: How do you know when an equation has no solution?

113. ## chemistry

A system gives off 196 kJ of heat to the surroundings and the surroundings do 4.20 x 10³ kJ of work on the system. What is the change in internal energy of the system?

114. ## Math (Trigenometry)

Write f(x)=x^4-12x^3+59x^22-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I

115. ## science

i am studing about seafloor spreading rate i need to know how to calculate the average age and distance for this pair of peaks 12.5 & 11.0

116. ## Physics

Can someone please tell me how to calculate the standard deviation of the following values? 0.985 0.985 1.005 1.455 1.035 And please for the following numbers too 1.47 1.52 1.50 1.45 1.39

117. ## chemistry

Do 65 grams of oxygen and 44 grams of carbon contain equal number of atoms? Calculate the number of atoms?

118. ## Trigenometry Math

Using the factors (-5x+4) and (x+1), find the remaining factor (s) of f(x)=-20x^4+91x^3+60x^2-71x-20 and write the polynomial in full factored form.

119. ## geometry

Prove line segment BP is 2/3 of line segment BD in triangle ABC

120. ## chemistry

How many grams are there in 2 moles of each of the following? A)Xe2 B)C6H12O6 C)CH3COOMg

121. ## math

A (4,3) B (3,-3) c (-4,5) Find the slope of AB, BC, and AC. Fond the tangent of each angle and their angle measure using: tanX=m2-m1/1+m1m2 m2 being the slope of the terminal side (measuring counterclockwise)

122. ## Algebra 1

Graph the system of inequality x+2y 0. Thank you

123. ## Math

Solve by factoring: (2x+9)(x-6)=0

124. ## math

If 3/8 of the class was absent what % of the class was present?

125. ## college physical science

What is the force exerted by a train travelling from rest to 120 mph in 15 min? The train weighs 200,000 lbs.

126. ## chemistry

The volume of a gas at 20 C and 0.4 atm is 10 mL. What volume will the same gas sample occupy at standard conditions?

127. ## Physics

I have performed an experiment of simple harmonic motion and the values I got Mass(g)Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having

128. ## Chemistry

How many protons, neutrons, and electrons are in a flourin-19 atom? The answer is 9 protons, 10 neutrons, and 9 electrons. How did they get this??

129. ## HISTORY

What were some of the encounters between Europeans and Native Americans? Consider why Europeans came to the New World, what they expected to find, what they actually found, and how the two sides interacted with each other?

130. ## Algebra

I need toIs the following pair of lines parallel or perpendicular? Prove your answer. 2y – x = 2 y + 2x = 4 can you explain how to break this down ...

131. ## Enghlish

Explain effective practices for developing a topic sentence.Explain effective means for writing a paragraph.Summary,Anlysis,synthesis,and Evalution.Identify the role of reading in the writing process.identify the differences between

132. ## Chemistry

how to calculate number calories to heat 285 grams h2o

133. ## statistics

76% of toddlers get their immunization. Suppose that 6 toddlers are selected at random. What is the probability that at least one has not received the recommended immunization?

134. ## Chemistry

If a saturated solution prepared by dissolving solid BaSO4 in water has [Ba2+]= 1.04*10^5M, what is the value of Ksp for BaSO4?

135. ## Math

Carmen received some money for her birthday on Friday. That night, she took her friend out to dinner. She spent half of her check for dinner. Then she tipped the waiter \$6. The next evening she went to dinner alone, spent half of the money she had left,

136. ## Chemistry

Which of the following can be amphoteric? A) Cl¯ B) H3O+ C) HPO4¯ D) PO4¯³ E) HCl

137. ## Pyschology

can anyone help me with this. I can't think of anything or explain to me. Post an example of a simple experiment of your own creation by following this format: I would like to investigate the effects of _____________ on this behavior: _____________. Half

138. ## math

there are a group of ducks and goats there are 99 heads and legs among them there twice as many ducks than goats are many ducks and goats are there?

139. ## trigonomtry

can you correct the rest for me please? Express each as a function of theta: a. sin (270deg + theta)= cos theta b. cos (pi + theta)= -cos theta c. tan (810 + theta)= ????? d. sin (theta - 180)= -sin theta

140. ## statistics

a standardized test has a mean of 88 and a standard deviation of 12. What is the score at thr 90th percentile? Assume a normal distribution.

142. ## physics

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side

143. ## chemistry

If the solubility of a particular solute is (10 g/100 g H2O) at 20°C, what solution concentration would represent a supersaturated aqueous solution of that solute?

144. ## Enghlish

Explain effective practices for developing a topic sentence.Explain effective means for writing a paragraph.Summary,Anlysis,synthesis,and Evalution.Identify the role of reading in the writing process.identify the differences between

145. ## Discrete Math

Which of these relations on {0, 1, 2, 3} are equivalence relations? Justify the relation(s) that are not equivalent. R1: {(0,0), (1,1), (2,2), (3,3)} R2: {(0,0), (1,1), (1,3), (2,2), (2,3), (3,1), (3,2), (3,3)} R3: {(0,0), (0,1), (0,2), (1,0), (1,1),

A (4,3) B (3,-3) c (-4,5) Find the slope of AB, BC, and AC. Find the tangent of each angle and their angle measure (inv. tan) using: tan of an angle =m2-m1/1+m1m2 m2 being the slope of the terminal side (measuring counterclockwise) the triangle looks like

147. ## Calc

derivative of (x^2+14)/x

148. ## english

compare and contrast the representation of the small town characters in Ethan frome and our town. do the authors depict their characters in a similar way or different? how do these depesitions influence the stories? To me both characters in both books are

149. ## chemistry

Fish-liver oil is a good source of Vitamin A. When 0.1232 g of fish liver oil is dissolved in 500. mL of solvent, an absorbance of 0.724 is recorded. When 0.00167 g of Vitamin A is dissolved in 250. mL of solvent, an absorbance of 1.018 is recorded.

150. ## american national government

IF YOU COULD CHANGE ANY CONSTITUTIONAL LAW, OR AMENDMENT, WHAT WOULD YOU CHANGE, AND WHY.IF YOUR PROPOSAL MADE IT TO THE CONGRESSIONAL SEAT FOR VOTES WHAT WOULD YOU PROPOSE AS A FIX IT ALL.

151. ## WRITING(CHOCOLATE BAR)

our goal is to pick a candy. My candy i picked was Mars Bar. The teacher told us to make 3 claims of our chocolate and then beside those 3 claims we have to write 3 evidences. The 3 evidences are the things im having trouble on. I have my 3 claims already

152. ## U.S History

what root cause of World War 1 caused nations to "glorify their militaries

153. ## science

What role do condensation nuclei play in condensation? (cloud flormation) I did some research and found that the condensation nuclei attract water and produce condensation so would that mean my answer would be something like 'that the condensation nuclei

154. ## math

A turtle is crossing a field, going 1 mile in 5 days. what is his speed in ft/sec?

155. ## math(geometry

W and Z are coordinates of OR and ST respectively. In parts (a)-(c) find coordinates of W and Z

156. ## computer science

18 MB of data are to be transmitted over a 4 megabits per second connection. How long should the complete transmission take, to the nearest 0.1 s?

157. ## geometry

what is the perimeter of trapeziod (-3,3) (-5,0) (2,3) (4,0)

158. ## English

can you check my grammar and content? i need to submit this paper for an exam and want to get a good grade.

159. ## Math

1/c+2 + 1/0.30+0.60 = ?? How do i find a common denominator for this?

if m

161. ## math-geometry

Given that 5y=25x how do you get the ratio of x to y in simplest form?

162. ## geometry

If side BC = 4 cm, side DE = 6 cm and side AE = 9 cm, then what is the measure of side AC?

163. ## pre-algebra

If I have Y=-3X+21 do i simplify or keep it just the same???

164. ## physics

A piece of gold wire is used to form a circular loop of radius 12.3 cm. The wire has a cross-sectional area of 11.1 mm^2. Points A and B are 90.0° apart. Find the resistance between points A and B.

165. ## Math

the diameter of a quarter is close to 25 millimeters. what is the length of a row of quarters whose total value is \$10.00

166. ## math

what are 12 numbers with a minimum of 50 a maximum of 57 a mode of 56 and a median of 54

167. ## statistics

Thirty percent of all automobiles undergoing a headlight inspection at a certain inspection station fail the inspection. Among 15 randomly selected cars, what is the probability that at most four fail tha inspection?

168. ## Chemistry

Select all cases in which the attraction between units in the solid can best be classified as electrostatic bonding forces. RbBr H2O2 HI MgI2 Na2O SiO2(quartz) None

169. ## math

how to find the mean for reading 3 hours in 5 days

170. ## practical english

what are the four things you look when proofreading

171. ## Calculus

Find the equation of the line tangent to the graph of f at (1,1) where f is given by f(x)=2x^3-2x^2+1

172. ## english

what does cliche mean

173. ## enviromental studies

please could someone help me with my enviro homework im stuck on this question What the Green Revolution involved give 6 answers. ive put to improve the productivity of crops in LEDCs and to reduce famine. im not sure if these answers are right.

175. ## math

In the 1933 movie, Kong was about 20 feet tall and weighd 38 ton. In the 2005 version, he was 25 feet tall and weighed 8,000 lbs. Does the data on the weight of Kong make sense for these heights?

176. ## geography gcse

1)Why do some glaciers have more than one medial moraine? is it because they are formed by two lateral moraines and has more than one source. 2)where does most of the lateral moraine come from? is it from the valley sides 3)why is the terminal moraine

177. ## health

if a medical assistant knows that a patient's boy friend has Hiv and the patient does not know what should she do with the information

178. ## physics

Calculate the net force needed to give an acceleration of 0,5m/s to a trolley with a mass of 1,5 kg

179. ## MATH

1.Graph the function f(x) = (x + 3)3 by hand and describe the end behavior.

180. ## TO MS. SUE Writing (CHOCOLATE BAR)

FOR THE CARAMEL, ARUSHI, TOLD ME THAT CHOCOLATE AND CARAMEL MAKE A GTEAT COMBO. IS THAT OK WITH U?

181. ## Andy

Name: Lesson 3 Assignment.Instructions Explain the differences between solving these two equations: •log3(x - 1) = 4 and log3(x - 1) = log34. I think it has to do with the formulas

182. ## general science

Increasing depths in the ocean causes a what in sunligh. Increasing depths in the ocean causes a what in pressure. Producer in the upper three zones of the ocean use what while producer in the lower ocean zones use what to generate nutrients to support the

183. ## re-drwls-geography

thanks for your help i would have labelled my question geology but it is for geography sorry

184. ## geometry

A triangle has side lengths of 3in, 4in, and 6in. The longest side of a similar triangle is 15 in. What is the length of the shortest side of the similar triangle?

185. ## physics

why there is no proportionality constant in equation of centripetal acceleration after removing proportionality sign?

186. ## chemistry

what is the name of the compound made ofrom chlorine and magnesium

187. ## math

How much is 4.36 meters in centimeters?

188. ## Language Arts

Is my first paragraph of the essay good? Correct some mistakes. The Lightning Thief book and movie are different and same in many ways. The book of the Lightning Thief is more interesting and detailed for most people who read the book and watched the

189. ## AP Calculus

Locate the absolute extrema for f(x) = 3/x-1

190. ## AP Calculus

Determine the critical numbers for y=sq root of (x^2 - 2x -15)

191. ## AP Calculus

Suppose that f(0) = 4 and f'(x)< or equal to 2 for x>0. Apply the MVT to the interval [0 , 3] to prove that f(3) < or equal to 10

192. ## Physics nd the TI84 Calculator

Could someone remind me how to calculate this on the TI-84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^-7 but I'm not doing the input correct Please help

193. ## algebra 1

Graph the system of inequality x+2y 0. Thank you

194. ## Simple Harmonic Motion

have performed an experiment of simple harmonic motion and the values I got Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having

195. ## math

what multiplication fact can be found by using the arrays for 2X9 and 5X9?

196. ## Math- Statistics

A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. *

197. ## management information system

Is spyware ethical? why or why not?

198. ## Pre-Calculus

I'm having trouble with this question. The number of horse-power H required to overcome wind drag on a certain automobile is approximated by: H(x)= 0.002(x)^2 + 0.005(x) - 0.029, [10 is less then/equal to (x) is less then/equal to 100]. Where x is the

199. ## science

If you walk 100 meters forward and then 35 meter backward what is distance traveled and your displacemaent ?

200. ## averbs/ ajectives

Students are often confused about the use of the words good and well in their writing. Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the

How are the properties of the compound water different from the properties of the elements in it?

202. ## chemistRY

When you react hydrogen gas with nitrogen gas to form ammonia, How many grams of all species ( reactants and products) are left when you start with 140 grams of nitrogen and 40 grams of hydrogen?

204. ## chemistry

How many grams are there in 2 moles of sodium?

205. ## Analytical Mechanics

A car traveling at 100Km/hr smashes into a concrete abutment. Show that the collision is the equivalent to driving off the top of a ten story building. Allow 4 meter per story and neglect air resistance. Next, find the equivalent vertical height to

206. ## chemistry

What is the percentage composition of nitrogen in silver nitrate?

207. ## science

what organism made the jump from water bound to land?

208. ## chemistRY

When you react hydrogen gas with nitrogen gas to form ammonia, How many grams of all species ( reactants and products) are left when you start with 140 grams of nitrogen and 40 grams of hydrogen?

209. ## Discrete Math

Consider the following relation on R1, the set of real numbers R1 = {(1,1), (1,2), (2,1), (2,2), (3,3), (4,4), (3,2), (2,3)} Determine whether or not each relation is flexible, symmetric, anti-symmetric, or transitive. * Reflexive because the relation

210. ## chemistry

Calculate the mass of water produced by 64 grams of CH4 CH4(G) - 2O2 (G) -----CO2(G)-2H2O(l)

211. ## Chemistry

The element iron (Fe) is 45.8% by mass of a mixture. Write both conversion ratios for the following mass percent values.

212. ## Geometry

How do you find the centroid of the coordinates D(-3, 8), E(-3, 0) and F(9, 4). What are the steps?

213. ## CHEMISTRY

For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) ---SiC(s) +2CO(g)

214. ## CHEMISTRY

For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C? SiO2(s) + 3C(s) ---SiC(s) +2CO(g)

215. ## english

What are the differences between the schoolmaster and guest in terms of characterization? why is this important?

216. ## Calculus

Mt+1= 0.75Mt+2 give the solutions of the dynamical system with Mo=5 i.e determine Mt as a function of t

217. ## english

That question was related toa short story called 'the guest'.

218. ## chemistry

determine the amount of solute needed to make 100ml aqueous solution of NaCl and MgCl2 that will cause a 10 degree change in freezing point. Determine the amounts of solute needed to make 100ml aqueous of AlCl3 and ethanol that will cause a 10 degree

219. ## english

How does the decription of a setting of a short story reflect or relate to the different conflicts occuring in the story? Can you give some examples, if you can. pls help

220. ## geometry

what are the relationships between corresponding sides perimeters and areas ofsimilar figures how are the characteristics of similar figures applied in problem solving how ara these relationships applied in solving real world situations

221. ## chemistry

calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change in freezing point of water. solutes are Al2(SO4)3, KBr, Mg(NO3)2

222. ## ecology

Were should I look for info on land and aquatic biomes, if all I want to know is the plats that grow there, and the animals that live there, as well as the annual ammount of rainfall and average temp. without having to do a lot of reading.

223. ## Math

A girl lets out 50 yards of kite string while flying a kite. The distance from a point on the ground directly under the kite to where the girl is standing is 30 yards. If the girl holds the string 3 feet from the ground,how high is the kite? Assume the

224. ## physics

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side

225. ## chemistry

why would it not be useful to just use pure ethanil or pure ethylene glycol as aN ANTIFREEZE SINCE THEIR NORMAL FREEZING POINTS are -114.1 degrees celsius and -12 degrees celsius respectively

226. ## math

the capacity of a measuring pitcher is 96 fluid ounces.how many quarts can the pitcher hold?

227. ## math

wht is the function rule that represents the relationship found in the following ordered pairs (-5,22),(10,-23),(4,-5),(-7,28),(6,-11)

228. ## chemistry

determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

229. ## algebra

y = -4x -2 find the y coordinates of the points (1),(-1),(-3).

230. ## language arts peer edit

The Lightning Thief book and movie are different and same in many ways. The book of the Lightning Thief is more interesting and detailed for most people who read the book and watched the movie. The movie sometimes has things that the book doesn’t have

231. ## testing of materials

Could you please show me how to solve this problem ! The unit weight of a soil is 122 lb/ft^3 at a water content of 12.6%. The specific gravity of the soil is 2.72. Find dry unit weight,porosity,and degree of saturation.

232. ## ENGLISH

Can you please proof this letter for all errors? I need to make sure it is free of errors. Dear Mr. Wilshire: Pursuing to our discussion last week we expected to receive your completed application together with the minimum enrollment fee. If you are

233. ## testing of materials

Could you please show me how to solve this problem ! A soil sample is 5.08 cm in diameter and 47.3 mm high. Find volume in cm^3. Also find density (g/cm^3) if its mass is 137.33 g.

234. ## English

Were are the nouns in this sentence? Today.in the united states, cell phones are a very popular item.

235. ## Calculus Quiz Today

1. find the values of s for which each function is continous: f(x) = [ x if x less than or equal to 1] [2x-1 if x greater than 1] 2. determine all values of x at which the function is discontinuous: f(x) = (x^2-2x)/(x^2-3x+2) Could someone please tell me

236. ## Math

Write f(x)=x^3+8x^2+13x+33 in the form f(x)=(x-k)q(x)+r when k=-7.

How can you tell, using a microscope, that an onion cell has depth?

238. ## testing of materials

Could you please show me how to solve this problem ! Volume= 1.00cm^3,mass of water= 0.49 g, dry mass= 1.32 g, RD=2.70

239. ## Probability

How do I determine the probability of selecting a card greater than 9 or a black card?

240. ## Calulus Completely lost

Find the indicated one-sided limit, if it exists 1.lim f(x) and lim f(x), where x->0^+ x->0^- 2. f(x) = [2x if x is less than 0] [x^2 if x is greater than or equal to 0]

241. ## college chemistry

Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature: CaCO3(s) → CaO(s) + CO2(g) In one particular reaction, 40 g of CaCO3 is heated at 750°C in a 5.0 L vessel. The pressure of

242. ## math

how to convert 4.50 cubic feet to milliliters

243. ## english

Backpacking also has its basic four, these being, in order of importance, hiking shoes, the backpack, sleeping gear, and shelter. What correction should be made to this sentence?

244. ## Physics

An aluminum block slides along a horizontal surface. The block has an initial speed of 11.6 m/s and an initial temperature of 10.7°C. The block eventually slides to rest due to friction. Assuming all the initial kinetic energy is converted to heat energy

245. ## Calculus Need of Urgent help

find the indicated limits, if they exist. 1. lim (3x^3+x^2+1)/(x^3+1) x-> -infinity 2. find the slope of the tangent line to the graph of the given function at any point: f(x) = 2x +7 Could anyone please, please, please explain to me how to do these

246. ## physics

A magnetic field has a magnitude of 1.20 10-3 T, and an electric field has a magnitude of 5.50 103 N/C. Both fields point in the same direction. A positive 1.8-µC charge moves at a speed of 2.60 106 m/s in a direction that is perpendicular to both fields.

247. ## Algebra 1

Graph the system of inequality x+2y 0. Thank you Can you just tell give me the answer and where in the region I should shade it and If it has a solid line or dotted one? Please, I think I will be ok with that. Thank you.

248. ## Math

The formula A=bh is used to find the area of a parallelogram. If the base of a parallelogram is double and its height is doubled, how does this affect the area.

249. ## physics homework 1

A 4.67-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.446. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b)

250. ## homework physics 2

An ice skater is gliding horizontally across the ice with an initial velocity of +5.33 m/s. The coefficient of kinetic friction between the ice and the skate blades is 0.0988, and air resistance is negligible. How much time elapses before her velocity is

251. ## homework physics 3

Air rushing over the wings of high-performance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps cars hug the track more securely. The coefficient of static friction between the track and the tires of

252. ## physics

water 20 degrees celsius flows through a 25 mm diameter pipe at a rate of 50 liters per minute. is this laminar or turbulant flow or both?

253. ## Math (Trigenometry) 3

Write f(x)=x^4-12x^3+59x^22-138x+130 as a product of linear factors. I listed the factors of 130 and used synthetic division, but none of the remainders came out to be 0. I graphed the function, but the function doesn't pass through the x-axis. I figured I

254. ## physics homework 4

A 1.60 kg win bottle is lying horizontally in a rack. The two surfaces on which the bottle rests are 90.0° apart, and the right surface makes an angle of 45.0° with respect to the horizontal. Each surface exerts a force on the bottle that is

255. ## PHYSICS HOMEWORK 5

A circus clown weighs 875 N. The coefficient of static friction between the clown's feet and the ground is 0.630. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the minimum pulling force that

256. ## Calculus: for mathmate

Find the slope of the tangent line to the graph of the given function at any point: 1. f(x)= 13 I understand that you said the tangent to the line is the coefficient of x, but what would be the slope of this problem. For problems like this are there

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is

258. ## Jiskha

How do I remove questions I have previously asked?

259. ## physics homework 6

A damp washcloth is hung over the edge of a table to dry. Thus, part (mass = mon) of the washcloth rests on the table and part (mass = moff) does not. The coefficient of static friction between the table and the washcloth is 0.395. Determine the maximum

260. ## us history

what is an example of the eighth ammendment?

261. ## physics homework 7 :)

The weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord.

262. ## physics

Outside air generally contains some water vapor (typically 1-2% by mass). Does it take more, less, or the same heat to raise the temperature of 1kg moist air than is needed to raise the temperature of 1kg dry air by the same amount?

263. ## physics homework 8!

To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 365 N. Neglect any friction between the rope

264. ## Genetics

A recessive eye color mutation (se) in fruit flies leading to a color called "sepia" is determined by an autosomal gene. Another recessive mutation called "brown" (bw) causes brown eye color, and is determined by an autosomal gene on a different

265. ## Chemisty

explain how you get a decompositin..?

266. ## World History

Why was Egypt important to Europeans in the nineteeth century? Great Britain was determined to have complete control of the Suez Canal. Why? How did European lead to the Boer War? How did the French system of colonial rule differ from that of Great

267. ## Biology

Excluding the echinoderms, all the animals in group 2 (birds, mammals, fish, amphibians) have which of the following characteristics in common? A)protostome embryo, coelom, radial symmetry, dorsal nerve cord B)protostome embryo, no coelm, bilateral,

268. ## Biology

All organisms in group 2(birds, fish, mammals, echinoderms, amphibians) except _______ are thought to share a common ancestor that possessed many of the same characterisitcs as the modern lancelets. A)echinoderms B)fish C)amphibians D)birds E)mammals

269. ## Biology

If bird DNA is more similar to crocodile DNA than turtle DNA is to crocodile DNA, then... A)birds should be included amoung reptiles B)turtles and birds should be excluded from the reptiles C)the reptiles should be replaced by several new classes D)each of

270. ## physics

a) Find the maximum rate of deceleration of a car on a dry, level road, assuming the coefficient of static friction between tires and pavement equals 1.4. (b) Find the minimum stopping distance if the car has an initial speed of 27.5 m/s. (c) Repeat parts

271. ## English

Match these. 1. Cross 2. Crescent 3. Buddhist 4. Hindu 5. believer 6. infidel 7. secularism 8. Christian 9. Islamic 10. Bible 11. Koran 12. Bhagavad-Gita 13. Upanishads 14. Ifa, Orunmila (Yoruban

272. ## pre cal

Tamara is flying in a hot air balloon. The hot air balloons is flying at an altitude of 1100 feet. The ground distance to the landing site is 1400 feet. What is Tamara's angle of depression to the landing site? What is the actual distance between the hot

273. ## Calculus

Find the values of x for which each function is continous: f(x) = x^3 -2x^2+x -1

274. ## maths

3(x+y)=7(y-x) 5(3x-y)=x-3

275. ## pre cal

A submarine is traveling parallel to the surface of the water of the water 492 feet below the surface. The submarine begins a constant ascent to the surface so that it will emerge on the surface after traveling 3974 feet from the point of its initial

276. ## Exponents

(2x . 3x + 1) divide by (2-x . 3x-1) 2 divide by 2x-1

277. ## math

if a figure has 48 square units as it's area and 38 units as it's perimeter what would the figure look like?

278. ## Math

How do you solve for 4y+8=1-5(3y-10)!

279. ## pre cal

A submarine must descend 516 meters to explore a shipwreck. The submarine begins a constant descent to the shipwreck so that it will reach the shipwreck after traveling 2976 meters from the pint of its initial descent. What angle of descent did the

280. ## geometry

The altitude upon the hypotenuse of a right triangle divides the hypotnuse into segments of 3 and 12. find the length of the altitude

281. ## algebra

write a quadratic equation in the variable x having given the numbers as sollutions type the equation in standard form ax^2+bx+c=0. solution 4 only solution

282. ## Physics

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is

283. ## Shurley English

My son has to classify each word in the sentence; The boys gave my brother a bat. He can't figure out what "my" would be classified as.

284. ## math

wHAT IS 10.000@2.88%

The Morrison family bought a car for \$22,000 was which was financed at \$600 per month for 40 months. The down payment was \$3000

286. ## pre cal

A boat has passed directly over a submarine as pictured below. The sub is running at a depth of 588 ft, and the angle of depression from the boat to the sub is 35 degrees. Find the distance, x, from the boat to the submarine.

287. ## poetry

I have to write a sonnet including one metaphor, one similie, two examples of a sound device such as an alliteration, consonance or assonance, and one example of enjambment. It may also include allusions, metonymy, synecdoche or allusion I am doing a

288. ## mathematics

Train L and Train M leave a station at the same time heading in opposite directions. Train L is going north at an average speed of 70 miles per hour (mph). Train M is going south at an average speed of 85 mph. How long does it take each train, in hours, to

289. ## pre cal

If an 22-inch tire rotates 40 times per 2 minute, determine th elinear and angular speed of the tire.

291. ## Math

Simplify the expression: (3x^2-8x^3+4x)-(9x^2-x^3+x)+4(6x-7)

292. ## beginning algebra-check my answer

[(x^2-1)/(x-3)] / [(x^2-x-2)/(3x-9)] I get (3x-3/x-2)

293. ## Physics

A stopped 100okg car exerts 160kW of power as it accelerate. If it is only 75% efficient, how far will it travel in 4 seconds?

294. ## math

what would a data set with 10 numbers with a range of 85 a mean of 50 and a median of 40 look like

295. ## Algebra

What is the area of a circle whose diameter is given by the expression 10x?

296. ## Geometry

THe area of a trapezoid is 80 units. If its height is 8 units, find the length of its median?

297. ## Physics

Two charges q1 and q2 when separated by a distance r1 = R produce a force F1on each other. If the separation is increased to r2 = 2R, what is the new force F2 in terms of F1?

I need help with this problem..the answer and how you got it. thanks amy gets 1 hour for lunch at her job. today she used 1/4 hour to eat and 2/5 hour to run an errand. she spent the rest of her lunchtime writing a letter. how may minutes did amy spend

299. ## chemistry

vinegar is made by adding 33 g of acetic acid to 625 if water what is the percent by mass of acetic acid in this solution of vinigar

300. ## Chemistry

3 H2 (g) + N2 (g) --> 2 NH3 (g) How many liters of ammonia gas can be produced from 10.0 L of N2 and 20.0 L of H2? Assume all gases are measured at the same temperature and pressure.

301. ## Physics

An electron experiences a force of 12 mN in the positive x-direction in an electric field. What is the magnitude and direction of the electric field?

302. ## chemistry

If a skateboarder is going 40 meters per second after 3 seconds, what is the initial velocity of the skateboarder with an acceleration of 2.1 meters per second squared?

303. ## AP European History

I have to write an essay answering the following questions: What is the relationship between the study of geography and the study of history? What are the advantages and disadvantages of Europe’s geography? Explain the impact of Europe’s geography on

304. ## BIS/219

Looking for all 5 weeks of assignments

305. ## Physics

A 60kg biker on a 20kg bike exerts 600W of power to accelerate from 1m/s to 9m/s in a distance of 40m. What is the force of friction acting on the bike and biker?

306. ## Physics

A 1000kg car accelerates from 3m/s East to 24m/s East at a rate of 3m/s. If the force of friction is 500N West; how much ower must the car exert? If heat and mechanical losses make the car only 60% efficient, what total power must be exerted to accomplish

307. ## Business Law/ Partnership Contract

I'm trying to write a partnership contract but not sure if it sounds ok....Please let me know if I should change anything. This Agreement is made between Tim (“Couch”) and Bert (“Parker”) on February 1, 2011. Couch and Parker are sometimes referred

308. ## chemistry

Predict the products and then write the complete balanced chemical equation with states of matter: 1. Sulfuric Acid and sodium hydroxide 2. Aluminum and copper (II) sulfate 3. Silver nitrate and iron (III) chloride 4. Magnesium heated 5. Aluminum oxide

309. ## Math

Multiply/divide and simplify: (12x^5-8x^3+4x)/(4x) The answer I got is 3x^4-2x^2+1. Is this correct?

310. ## AP European History

Would hitler's invasion of Russia during WWIi and the attack on Normandy be good examples of how geography has influenced Europe's history? I can't think of another one, but another would be nice, expecially something about trade or commerce. Thanks!

311. ## math

Mrs. Gainey needs to buy string for 5 students to do a science activity. Each student needs 2 feet of blue string and 1 foot of red string. How many yards of string does Mrs. Gainey need to buy?

HOW WOULD YOU PREPARE ML OF A 0.250M SOLUTION OF Ca(NO3)2?

313. ## math

1. find the values of s for which each function is continous: f(x) = [ x if x less than or equal to 1] [2x-1 if x greater than 1] 2. determine all values of x at which the function is discontinuous: f(x) = (x^2-2x)/(x^2-3x+2) Could someone please tell me

314. ## Math (Trigenometry)

Using the factors (-5x+4) and (x+1), find the remaining factor (s) of f(x)=-20x^4+91x^3+60x^2-71x-20 and write the polynomial in full factored form.

315. ## chem

How do you separate a mixture of iron pellets, KBr, and sand?

316. ## Calculus 3

Show that if a, b, c are in V3, then (a x b) dot [(bxc)x(cxa]) = [a dot (b x c)]^2 I don't know what properties to use

317. ## Molecular and Electron geometry

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd

318. ## geometry

why is a original image and a similar image are related

319. ## Physics

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is

320. ## physics

Why does cross sectional area of a liquid stream reduces while falling vertically??

321. ## Algebra 1

Explain the differences between solving these two equations: Brake down the steps. log3(x - 1) = 4 and log3(x - 1) = log34 )

322. ## College Physics

An athlete in a competition needs to get from point A to another point B directly across from a river. He can swim in stationary water at a speed of 2.0 mi/h, and he can run at a speed of 5.0 mi/h. If the river does not flow, then to get from A to B he

323. ## algebra

35+ 6 x < 20 -2

324. ## math

if csc theta= -5/3 and theta has its terminal side in quadrant III, find the exact value of tan 2 theta.

325. ## pre-algebra-is my answer right

Graph -3x+4 My points are at (0,4) and (1,1)