1. Algebra

    I have a few questions I need help with. They are to help review for our exam. 4) Without graphing, is each system independent, dependent, or inconsistent? -x-3y=0 x-y=4 (i believe dependent) dependent independent inconsistent 6) Which matrix represents

    asked by lila on January 2, 2013
  2. Chemistry 2 - Acids and Bases

    Hydrazine (NH2NH2) is a weak base that ionizes in water as follows. NH2NH2(aq) + H2O(l) HNH2NH2^+(aq) + OH^−(aq) Calculate the concentration of OH^− ions in a 0.20 M solution of hydrazine, given that the base-dissociation constant (Kb) for hydrazine is

    asked by Jamie on February 28, 2018
  3. Chem

    Assume the volume of a filter flask is 250.0mL. You have added (25.0 + 10.0)mL of solution so the volume of gas is (250.0 - 35.0) = 215.0mL. Calculate the extra volume of gas forced into the burette because of the measured average temperature of 23 degrees

    asked by Alix on October 20, 2010
  4. CHEMISTRY

    Suppose a student adds 25.00 mL of 1.025 M HCl to a 1.50 g antacid tablet. The student boils and then titrates the resulting solution to the endpoint with 0.4969 M NaOH. The titration requires 21.3 mL NaOH to reach the endpoint. How many moles of HCl were

    asked by Jo on April 23, 2013
  5. Grade 12 Chemistry

    Caprytic acid, also called octanoic acid, is an 8-carbon fatty acid that is used as a sanitizer on dairy equipment that comes in contact with milk.The acid has a molar mass of 144.21 g/mol. An aqueous solution of the sanitizer containing 12.25 g/L has a pH

    asked by Anonymous on January 5, 2014
  6. mastering chemistry

    A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If 1.00 ml of 12 M HCl is added to this, what will be the resulting pH? (the only problem im having for this question is how to approach it, i know that by adding HCl the

    asked by chma11 student on February 28, 2009
  7. chemistry - vapor pressure

    the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know

    asked by billy on September 13, 2010
  8. Chem

    Phenol is a weak acid. We take 3.7 grams of phenol and dissolve it in 65 ml of water. To that water we add 40 ml of a 0.52 M solution of NaOH. You will need to look up the Ka value for Phenol a. What is the pH when the phenol is dissolved in the 65 ml of

    asked by Jordan on November 13, 2016
  9. Chemistry

    In a silphuric acid (H2SO4)-Sodium Hydroxide (NaOH) acid-base titration, 17.3mL of 0.126M NaOH is needed to neutralize 25mL of H2SO4 of unknown concentration. What is the morality of the H2SO4 solution? H2SO4 (aq)+ NaOH (aq) = Na2SO4 (aq) + H2O (l)

    asked by Dawn on July 1, 2014
  10. algebra 1

    Natalie performs a chemistry experiment where she records the tenperture of an ongoing reaction.The solution is 93.5 C after 3 minutes;90 C after 5 minutes,84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes;42.5 C after 37 minutes; and

    asked by Janet on October 24, 2012
  11. CHEMISTRY

    Suppose a student adds 25.00 mL of 1.025 M HCl to a 1.50 g antacid tablet. The student boils and then titrates the resulting solution to the endpoint with 0.4969 M NaOH. The titration requires 21.3 mL NaOH to reach the endpoint. How many moles of HCl were

    asked by Sarah on April 22, 2013
  12. chemistry

    How would you prepare a 150.0mL of a 3.50 pH buffer solution using .500M NaOH and .500M HCOOH. I've gotten the base/acid ratio for the Henderson-H. equation. But now I'm not sure how to figure out the balance of solutions of HCOOH and NaOH to get both

    asked by Israel on March 7, 2011
  13. Chemistry

    Question: When 1.97 grams of Pb(OH)2(s) is added to 1.00 liter of pure water at 25 C a saturated solution (some solid is present) is formed that has a pH of 8.97. Compute the Ksp value for Pb(OH)2 using the data. How do i go about getting the Molarity from

    asked by Eliz on May 11, 2009
  14. Chemistry

    Calculate the molarity of the nitrate ion in a 0.111 M solution of calcium nitrate? so would I have to find the number of moles of (NO3)2 and then divide it by the 0.111 M to get the molarity of the nitrate ion I am so confused please explain the set up I

    asked by Amber on March 22, 2013
  15. Chemistry

    After balancing the following redox equation(using small whole-number coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2-) → Bi + SnO3^(2-) (basic solution) --- I separated the equation into two and i know the

    asked by Lucy on May 7, 2017
  16. Chemistry

    A zinc-copper battery is constructed as follows. Zn | Zn2+ (0.70 M) || Cu2+ (2.30 M) | Cu The mass of each electrode is 200. g. (a) Calculate the cell potential when this battery is first connected. 1 V (b) Calculate the cell potential after 10.0 A of

    asked by Amy on March 29, 2009
  17. Math

    A 100 gallon tank is filled with a salt solution containing 10 lbs of salt. Pure water is pumped in at a rate of 5 gallons per minute and pumped out at the same rate. How many minutes will it take the amount of salt to drop to 8 lbs? Round to one decimal

    asked by Molly on December 5, 2016
  18. Statistics

    The accompanying data show the number of hours, x, studied for an exam and the grade received, y (y is measured in tens; that is, y = 8 means that the grade, rounded to the nearest 10 points, is 80). x 2 3 3 4 5 5 5 6 6 6 7 7 7 7 8 y 5 5 6 5 6 7 8 6 9 8 7

    asked by Sue on May 26, 2013
  19. can someone please help me?

    simplify the following expressions involving complex numbers. (3+2i)-(-7-i) 10 + 3i how did you do that? can you show me this one and explain how this time? (3+2i)(-7-i) or even (3-2i)^2 you would do 3+2i=5i, then -7-i=7i then 5i+7i=12i (3+2i)-(-7-i) =

    asked by Shay on January 18, 2007
  20. Physics

    john and Sarah participated in a roller skating show. while 75kg john skated backwards at 3.00m/s, 60kg Sarah jumped into his arms with a velocity of 5m/s in the same direction. a. how fast did the pair roll backwards together? b. if john instead skated

    asked by phillip on December 1, 2011
  21. Math, Trigonometry

    daylight in Calgary, AB each month is show in the table below.? Month Daylight (hrs) Jan 8.50 Feb 10.03 March 11.91 April 13.87 May 15.57 June 16.48 July 16.03 Aug 14.51 Sept 12.63 Oct 10.68 Nov 9.20 Dec 7.99 a) Determine the regression equation that

    asked by sam on September 9, 2013
  22. business

    Can you check my answers??? 11. Nearly a week before Hurricane Katrina reached New Orleans, Wal-Mart began moving trucks and supplies into position, as specified in the company's ________ plan. A. contingency B. operational C. tactical D. strategic 12. The

    asked by redfish on June 29, 2013
  23. Math

    A golfer hits a tee shot on a 350m long straight golf hole. The ball is hooked (hit at an angle) 21 degree to the left. The ball lands 210m from the tee. How far is the ball from the hole? I know how to solve this using cosine law (171.35 m) but am having

    asked by Rona on January 13, 2016
  24. maths

    plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he

    asked by jas on January 10, 2015
  25. math

    how do you turn fractions into decimals? what do you do with the remainders? example: 3/16---what would it be as a decimal? To turn a fraction into a decimal, divide the top number by the bottom number. Instead of a fractional remainder, you need to put a

    asked by brianna on September 13, 2006
  26. chemistry

    QUESTION: Calculate the standard free-energy change (deltaG°) for the following reaction at 25 °C in kJ. 2Ag^3+(aq) + 3Zn(s) 2Au(s) + 3Zn^2+(aq) here's what i have so far: first i wrote out the half reactions: Au^3+(aq) + 3e^- --> Au(s) = +1.52*2 Zn(s)

    asked by chem help please on December 6, 2012
  27. maths-6th grade

    plz solve according to sequence and series pattern a man was trying to swim to a buoy placed at a distance of 200m out in the sea. it took him 1 min to swim 20m. then a wave pushed him back 10m and he rested for about 1min before swimming again. he

    asked by jas on January 10, 2015
  28. Chemistry

    When 200 mL of an aqueous benzoic acid solution were extracted with 30 mL of ethyl actetate 45% of the benzoic acid were extracted. Calculate the partition coefficient of benzoic acid.

    asked by Nick on September 27, 2018
  29. college

    The radiator in a certain make of car needs to contain 20 liters of 40% antifreeze. The radiator now contains 20 liters of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?

    asked by Kristina on October 4, 2009
  30. Math

    6 m of soil containing 50% clay was mixed into 10 m of soil containing 10% clay. What is the clay content of the mixture? How much salt should be added to 80 pounds of a 5 % salt solutio to make it a 24% salt solution Thank you so much!

    asked by Marina on October 26, 2015
  31. trig

    how do you solve this problem? 1+sinØ/cosØ +cosØ/1+sinØ = 2secØ and cosß- cosß/1-tanß = sinßcosß/sinß-cosß

    asked by jd on December 4, 2007
  32. Statistics

    3 batteries are chosen at random from 15 batteries of which 5 are defective. Find the probability if: 1) none of 3 are defective 2) exactly one is defective 3) 2 defective and 1 non-defective 4) at least one is non-defective What should I do? Is it

    asked by Someonehunidshelp on January 29, 2017
  33. math(check my answers)

    SOLVE THE FOLLOWING EQAUTION BY COMPLETING THE SQUARE: 3. xsquared - 8x - 10 = 0 xsqaured -8x=10 xsquared-8x+(8/2)sqaured=10+(8/2)sqaured xsquared-8x+16=26 Answer: xsqaured-8x+16=26 WHAT DID I DO WRONG?

    asked by ki on April 9, 2013
  34. math probability

    A cake is divided into 3 portions one for you, one for your friend and one for your neighbor. If you get twice as much as your friend, and your friend gets twice as much as your neighbor. What proportion of the cake do you get? Please Explain to me how to

    asked by Steve on May 25, 2018
  35. Math

    When given sin(5x)=0, and asked to find x, I would basically have to solve for 5x first, and then divide my answers by 5. My question is if it was, for example, sin(5x+2)=0, would I minus 2, then divide by 5? Or divide by 5 then minus 2?

    asked by Stuck on January 18, 2010
  36. Algebra

    solve linear equation-an alloy of metal is 25% copper. Another alloy is 50% copper. how much of each alloy should be used to make 1000 grams of an alloy that is 45% copper

    asked by Melody on October 19, 2007
  37. math,algebra

    is this correct? solve: 9x^2=14 this is what i did: i divide 9 by both sides x^2=1.6 is this first step right Then take the square root of both sides. x^2=1.6 you said to take the squar root of both sides. so is this correct x = 1.264911

    asked by jasmine20 on April 14, 2007
  38. Math- urgent

    One more than 3 times a number is the same as 5 times the number, decreased by 15. Find the number. • Assign the variable • Write an equation • Solve equation

    asked by Sarah on October 30, 2013
  39. math

    The ratio of staff to patients at Lakeview is 8 to 7. If total staff plus patients is 1575 people, how many staff are at Lakeview? help me get started on how to solve this

    asked by sammy on July 20, 2009
  40. Math

    1. Find the 12th term of the arithmetic sequence 2, 6, 10, … . 2. Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3. 3. In the sequence 2, 6, 10, … , what term has a value of 106?

    asked by Annika on June 15, 2014
  41. Trig

    Does this result in no triangle, 1 or 2 triangles? If so, then solve. B= 88 degrees, b= 4 and a=23. I know that A= (sin 88)(23)/(4)= A=5.74 degrees C= 180-5.74-88= C=86.26 degrees c=(sin86.26)(4)/(sin 88)= c=3.99 My question is how do you know if it's 0,1,

    asked by Amber on November 23, 2014
  42. math

    The ratio of staff to patients at Lakeview is 8 to 7. If total staff plus patients is 1575 people, how many staff are at Lakeview? help me get started on how to solve this

    asked by sammy on July 20, 2009
  43. Math Help please Check my answer

    You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. My answer: 11.99x ≤ 59.95 11.99x/11.99 ≤ 59.95/11.99 x ≤ 5

    asked by Kaitlyn on January 14, 2014
  44. Math

    We have to solve for the problem below to make sure that it is equivalent to 2csc(x). However, I keep getting 2/2sin(x) and not 2/sin(x), which is what 2csc(x) is. tan(x)/(1+sec(x))+ (1+sec(x))/tan(x)= 2csc(x)

    asked by Sharon on April 10, 2008
  45. Physics: mechanics

    A 250g bullet with a speed of 500m/s passes through the center of a 1.5kg square wooden block [ side length 18cm] at rest upon a horizontal frictionless surface. As it exits the block, the bullet has a speed of 150m/s. A) find the initial speed of the

    asked by Michelle on October 20, 2014
  46. statistics

    a companys ceo wanted to estimate the percentage of defective product per shipment. in a sample contianing 600 products he found 45 defective product. a. find 99% confidence interval for the true porporton of defective product show calcultions and explain

    asked by crystal on August 23, 2011
  47. Physics

    Given that the Sun has a mass 333,000 times larger than Earth’s mass and Earth has an average distance of 1.49 x 1011 m from the Sun, at what distance from the Sun is the center of mass of the Earth-Sun system? a. 1.00 m b. 4.47 x 105 m c. zero d.

    asked by Tiffany on October 31, 2012
  48. math

    the binary system is used for computer programming. a binary number consists of a string of digits that are either 0s or 1s a. if a string of binary code is 5 digits long, how many binary numbers are possible if the first digit is a 1? b. how many

    asked by Anonymous on January 4, 2011
  49. Management

    The administrator of the Life-Time Insurance Com¬pany HMO, Ms. Taylor, was anxious to solve poten-tial problems before their new clinic opened in Austin, Texas. In Buffalo, New York, where the original clinic is located, the pharmacy had been extremely

    asked by Shrestha on April 29, 2013
  50. Math

    If the unit price for cantaloupe is $0.65 per pound and Sally pays $1.95 for a cantaloupe, how many pounds does her cantaloupe weigh? A. 2 pounds B. 3 pounds (I picked this) C. 4 pounds D. 5 pounds Please check my work.

    asked by ItsBeeboBaby on November 28, 2018
  51. math

    1.3:75 to a percentage 2.1:30 to a percentage 3.4/8 to a ratio 4.20/100 to a ratio 5.solve for x: 1.7:8 ::21:x 2.6:10::x:40

    asked by cleondra on September 19, 2012
  52. Math

    log (base 9) (x-2) + log (base 9) (x-2)=1 Solve algebraically.

    asked by Exponential on April 20, 2011
  53. Geometry

    If point a is (0,n) and b is (k,0) and point o is (0,0) what is the length of a and b And the length of de Do not solve just wants letters

    asked by Anonymous on December 24, 2013
  54. Statistics

    Please help me to solve this problem step by step. (14.44) = (14.44-10)/[4.45/sqrt(35)] = 4.44*sqrt(35)/4.45

    asked by Tee on January 22, 2011
  55. math

    is the answer to this question right? solve for "y" Question: 6x+8y-5=0 Answer: 3/4x-5/8=y is it right (if not can u correct it for me)

    asked by mystery on February 5, 2010
  56. trig

    solve the equation 3 sin^2(theta) -sin(theta)-4=0

    asked by stacey graham on March 26, 2010
  57. math-calculus

    solve equation |x^2-2x-6| using quadratic formula. i not get how to do this and it says quadratic formula.

    asked by Shreya on January 18, 2012
  58. Functions

    If f(x)=2x^4-9x^3+6x-5, then use synthetic division to find f(6) What is synthetic division? How do I solve this?

    asked by Jennifer on October 11, 2008
  59. Trigonometry

    Solve sin 2x + sin x = 0 for 0 (Less then or equal to) x (Less then or equal to) 2pi.

    asked by Marie on August 3, 2012
  60. Algebra help

    Solve by completing the square x2 - 2x - 5 = 0. Help please a)1 plus or minus√6 b)-1 plus or minus√6 c)-3 plus or minus 2√6 d)3 plus or minus 2√6

    asked by Aisumi on September 29, 2010
  61. Algebra 2

    Can someone help me solve this and break it down step by step please??? [Sqrt(x-3)]-[Sqrt(x+2)]=3

    asked by Luke on February 16, 2009
  62. pre-calc

    how do you solve this: the square root of a+4 plus the square root of a-3 equals 7

    asked by Amanda on November 4, 2007
  63. math

    solve the problem (1500*30*400)-1/2*(1500*30*400)

    asked by tauranus on March 23, 2013
  64. precal

    1.a) Find the domain of f(x) = x + log(2x – 5) b) Find the domain for f(x)= 5x + ln(x^2+3x-4) 2. Solve: 4^x +12 = 16^x

    asked by Hamal on February 16, 2014
  65. math

    solve the equation log of base 4 (3x+4) = log of base two (2x+1)

    asked by john on May 29, 2019
  66. math

    How do I solve absolute value bar 5p plus 12 absolute value bar equals 7?

    asked by Claire on October 21, 2009
  67. 8th grade math

    He had dimes and quarters ... He has 8 more quarters than dimes equalling 5.50..., how do u solve ..

    asked by Kill on January 7, 2013
  68. Math

    What would the absolute value be? \ 2-3\ if you solve it the answer comes to -1 but can you have a negative as your answer for absolute value?

    asked by Katrina on February 5, 2010
  69. math

    how do you solve 8-3x=the square root of 4xsquared+ the square root of 20 + 8

    asked by emma on March 2, 2010
  70. Algebra

    Solve. (–10x3 + 30x – 20) ÷ (–5x + 5) • 2x2 – 2x + 4 • –2x2 – 2x – 4 • –2x2 + 2x + 4 • 2x2 + 2x – 4 How?

    asked by Sandra on May 5, 2014
  71. Math

    Solve the Identity cot (x)/ (csc(x)-1)= (csc(x)+1)/cot (x)

    asked by Sandra on January 29, 2017
  72. Algebra

    Please help me to solve these two equations step by step. They are quadratic equations 1).2x^2+9x+4=0 2).5x^2=-7x

    asked by Daleda on January 18, 2012
  73. algebra

    Solve the equation: square root of 6x=square root of 8x+4 then -2

    asked by Ariel Bonan on September 15, 2009
  74. Math

    (=) greater than equal to sign Solve 2.7(=)7.7 b. b(>=)-2.3 c. b(

    asked by Kaai97 on October 15, 2015
  75. Geometry

    Solve the square root of 90 divided by the square root of 9?

    asked by Bryan on February 3, 2010
  76. math/algebra

    how do you solve x^2 = 12 take the square root of both sides this gives you x = square root 12 yw

    asked by Anonymous on August 12, 2007
  77. Math

    What is a quadratic formula? how can i solve x^2 + 8x + 12 = 0 applying quadratic formula?

    asked by Justin P on January 18, 2012
  78. Engineering

    How to solve this equation : log(base10)x - log(base10)y = 2

    asked by Edward on August 1, 2015
  79. algebra 1

    solve: the square root of y = 5 + square root of 2 divided by 2

    asked by teri on December 22, 2010
  80. maths

    the diagram shows the plan view of a swimming pool. The pool has a rectangular swimming area and a semi-circle area with steps. Work out the total surface area of the top of the pool. Giver your answer to 3 significant figures.

    asked by Anonymous on November 4, 2017
  81. Physics

    A 1000kg car is traveling along a level road at 20.00ms, when the brakes are applied long enough to do 50000 J of work. 1) what is the initial kinetic energy of the car? 2) if the car moved 100m while the brakes where applied, what was the average force

    asked by Kirsten on April 13, 2010
  82. physics

    A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal (the figure below). The total weight of the sled is 470 N. The tension in the rope is 240 N. How much

    asked by kyoya on February 25, 2013
  83. Rockland Center of Art: School of Arts (plz read)

    I have a question. Ok while I was reading the supply list that I need for Rockland Center for the Arts: School of Arts they wrote this Something to carry your wet(empty pizza boxes work well) in the supply list. What does that means??? Btw that's not the

    asked by Lauren on December 26, 2011
  84. Physics

    You are on vacation in San Francisco and decide to take a cable car to see the city. A 5500 kg cable car goes 360 m up a hill inclined 19 ∘ above the horizontal. What can your learn about the work done by the cable to move car up the hill? Answer

    asked by James on February 29, 2016
  85. physics

    A horizontal force of 200 N is applied to a 55 kg cart across a 10 m level surface. If the cart accelerates at 2 m/s^2 then what is the work done by the force of friction as it acts to retard the motion of the cart? Hint calculate the force of friction

    asked by april on February 3, 2009
  86. Electricity and magnetism

    A carbon atom's nucleus and its electrons become separated by 20nm. How much work does it take to separate them in Joules? In the previous problem if found that the magnitude of the force the nucleus feels towards the electrons is 2.07*10^11N. My first

    asked by Alice on February 23, 2015
  87. Physics

    Can someone walk me through how to work this? A block is being pushed up a frictionless incline by an applied horizontal force, F=12.7N. (The angle is θ = 23.80° and the mass is 1.70kg. a) How many forces are acting on the block? b) How many of those

    asked by James on March 3, 2015
  88. Physics.

    A toy car runs off the edge of a horizontal table that is 1.21 m high. The car lands 1.39 m away from the edge of the table How fast was the car moving across the table just before it fell? ____m/s MY WORK: h=1/2gt^2 1.21=1/2(9.8)t^2 1.21=4.9t^2 scuare

    asked by Rose Nicol on October 23, 2014
  89. Math

    A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. 1. What are the upper and lower control limits for a sample size of 100? 2. Recompute the upper and

    asked by jackie on December 9, 2010
  90. college

    A process for producing electronic circuits has achieved very high yield levels. An average of only 10 defective parts per million is currently produced. 1. What are the upper and lower control limits for a sample size of 100? 2. Recompute the upper and

    asked by jackie on December 8, 2010
  91. physics

    Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS

    asked by chris on February 28, 2016
  92. Math

    Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and forms triangle ABC. What is the measure of the angle between lines b and c? a. 35 degrees b. 45 degrees c. 90 degrees d. 135 degrees

    asked by Gina on July 14, 2016
  93. physics

    Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS

    asked by chris on February 28, 2016
  94. physics

    Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS

    asked by chris on February 28, 2016
  95. physics

    Calculate the heat given off by the hot water. GIVEN: Original quantity of water (hot water) 50g Orig.temperature :40°C Final temperature: 9°C Final quantity of water: 264g Increase in quantity of water 214g. PLEASE KINDLY SHOW ME THE EQUATION FOR THIS

    asked by chris on February 28, 2016
  96. can someone edit my body paragraph thanks :

    can someone edit my body paragraph thanks : The senate has important jobs that not many people know about. One of them is to disapprove or approve any piece of government legislation; with the help of the House of Commons. As well the senates investigate

    asked by Anonymous on April 23, 2007
  97. Chemistry

    An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The

    asked by Anonymous on January 24, 2010
  98. Calculus and Vectors

    An aircraft pilot wishes to fly from an airfield to a point lying S20oE from the airfield. There is a wind blowing from N80oE at 45 km/h. The airspeed of the plane will be 550 km/h. (a) What direction should the pilot steer the plane (to whole degree)?

    asked by Bobby on October 1, 2018
  99. chemistry

    An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1 . The

    asked by ChemLover on April 14, 2011
  100. Chemistry

    A 1.0-mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.010 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. a color change occured after 40 seconds. assuming 25 drops per mL for all solutions, determine the initial molar

    asked by Anonymous on February 21, 2013

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