Most popular questions and responses by Cherie
  1. Chemistry

    Briefly explain what the consequense would be if excess 6M NaOH solution instead of ^m NH3 solution were used to separate Fe3+ and Al3+ ions from Ca2+, Cu2+,and K+ ions at pH 9-10.

    asked on November 27, 2012
  2. Chemistry

    10. Cyclopropane is an anesthetic that is 85.6% carbon and 14.37% hydrogen by mass. What is the molecular formula of the compound if 0.45 L of cyclopropane reacts with excess oxygen at 120. °C and 0.72 atm to form a 1.35L of carbon dioxide and 1.35 L of

    asked on January 26, 2011
  3. Math(Please Help, Been Stuck On These For A Week)

    Sydney drew a scale diagram of a circular fire pit in the centre of a circular patio with an actual circumference of 15m. The circle containing the fire put is a reduction of the circular patio by a scale factor of1/3. A.) Determine the diameter of the

    asked on June 18, 2016
  4. math

    Ivan has completed 45% of his walk. He has already walked 9 km. How much farther does he have left to walk? I don't understand how to do this. Could you please help and show me how you got this answer? Thank you.

    asked on March 4, 2013
  5. Science

    Please help !!! A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of the water was 50.0 mL.

    asked on October 27, 2013
  6. Math

    One third of the students in mrs. hayko's class walk to school. Of the students who do not walk, four-fifths take the bus. a) what fraction of the students in Mrs. Hayko's class take the bus to school? b) How many students might there be in her class?

    asked on October 23, 2012
  7. Math

    Daphne replaced light bulbs in her mothers store.She had 3/4 of a box of light bulbs. She used 1/3 of the bulbs. a. What fraction of the box of light bulbs was left? b. How many light bulbs are in a full box? Explain. Thanks to everyone who helps answer

    asked on October 25, 2012
  8. math

    Antoine estimates he can read one and a quarter chapter of a novel in one hour. Jenna estimates she can read three chapters of the same novel in 2 5/6 hours. Antoine read for 8 hours. Jenna read for 6 hours. Who read more chapters? Show work. Please

    asked on November 12, 2012
  9. Math

    A student got these marks on 7math tests: 91%,75%,95%,,80%,83%,86%,68% What mark will the student need on the 8th test to make each statement true? a)The mean of the tests is 84% b)The mode of the eight tests is 86% c)The median of the eight tests is 84%

    asked on May 4, 2012
  10. Science

    What is a harmful effect of electrical resistance?

    asked on March 6, 2014
  11. Math1

    Post a New QuestionCurrent Questions Homework Help: Please Help Me! Posted by Courtney B. on Monday, June 20, 2016 at 4:20pm. The Edmonton rush is one of nine teams that play in the national lacrosse league. The weights of the 2013 Edmonton rush players

    asked on June 20, 2016
  12. Analytical Chemistry

    Suggest a range of sample masses for the indicated primary standard if it is desired to use between 35 and 45mL of titrant: (a) 0.175 M HClO4 titrated against Na2CO3(CO2 product) (b) 0.085 M HCl titrated against Na2C2O4 Na2C2O4-->Na2CO3+CO

    asked on October 29, 2014
  13. Math

    Tracy made a stained glass jewellery box. It measured 20cm by 12cm by 8cm. a) About how much glass did Tracy use? b) one piece of glass has an area of 100 cm squared and costs $3.65. How much did the glass cost?(assume all pieces can be used Please help

    asked on November 28, 2012
  14. Math

    A triangular prism has an equilateral triangle as its base. The base of the triangle is 10cm and its height is 10cm. The length of the prism is also 10cm. Find it's surface area

    asked on December 3, 2012
  15. Math

    Rectangle ABCD has been subdivided into 4 regions. The areas of two of these regions are a^2 and 144. The combined area of the other two regions is 25a. What is the perimeter of the rectangle ABCD? Please help and show steps! I don't have a clue how to do

    asked on October 3, 2014
  16. Math

    Every time Jim shoots a free throw in basketball, he has an 80% chance of making the shot. He is given 3 free throws. Find the probability of each event. a) misses all 3 shots b) misses the first two shots and makes the third. Can someone please explain to

    asked on April 17, 2013
  17. Math

    Find the missing number in this pair of equivalent ratios. _:12 : 36 and 8 : 4 : 12

    asked on March 4, 2013
  18. Math

    Ella babysits for 3/4 hour before school each morning. a) How many hours does she babysit in a 5- day work week? b) How many hours does she babysit in 4 weeks?

    asked on October 19, 2012
  19. math

    If a Ferris wheel takes 45 seconds to make a complete rotation, how many rotations will it complete in 3 hours?

    asked on April 28, 2008
  20. Math

    Kendra wants to purchase a bead necklace made of Jade. The cost depends on the amount of Jade in the necklace. Each bead is 7 mm in diameter and there are 100 beads in the necklace. What is the amount of Jade in the necklace in cubic centimeters? Please

    asked on September 24, 2014
  21. Math

    Amber made 5 3/4 pitchers of iced tea for her friends. They drank 2/3 of the iced tea. How many pitchers of iced tea did they drink? Do I subtract to get the answer?

    asked on October 30, 2012
  22. Algebra

    An initial investment of $480 is invested for 4 years in an account that earns 16% interest, compounded quarterly. What is the amount of money in the account at the end of the period?

    asked on May 7, 2010
  23. Microbiology

    Four questions ... 1) How can you account for the observation that a mass or colony of bacteria shows pigmentation while the individual cells have transparent cytoplasm? 2) What factors may alter the expression of the cultural characteristics of bacteria?

    asked on March 25, 2008
  24. Math

    A mountain pine beetle population can double every year if conditions are ideal. Assume the forest in Jasper National Park,AB has a population of 20 000 beetles. The formula P=20 000(2)^n can model the population,P,after n years. a) How many beetles were

    asked on October 31, 2014
  25. Trigonometry

    A wheelchair ramp has an angle of 6 degrees,side length 29ft and height 3ft. For a safe ramp,the ratio of vertical distance: horizontal distance needs to be less than 1:12. Would the ramp be considered a safe ramp? Please show me how to do this! Thank you

    asked on October 1, 2014
  26. math

    I am trying to figure out the surface area of a garage. It has an A shaped roof. There is an overhang of 0.5m on each corner. Do I include this in determining the area of the roof? I need to figure out how much stucco is needed for the garage minus roof,

    asked on September 24, 2013
  27. Math

    Please help I don't get how to do this! A spinner has three congruent sectors colored orange, green, and purple. Use the rule of probability of each event. a) landing on orange, then landing on purple b) landing on the same color 2 times in a row.

    asked on April 16, 2013
  28. Math

    When a satellite is h kilometres above Earth,the time,t,in minutes,to complete one orbit is given by the formula t=Root of (6370+h)^3/6024 a) A telecommunications satellite is placed 30 km above Earth. How long does it take the satellite to make one orbit?

    asked on October 28, 2014
  29. Math

    A manufacturer is designing an open, cube shaped box to hold a basketball. The basketball has a volume of 2304 Pi cm3. How much cardboard is needed to create the smallest box possible using the least amount of material? DO NOT include seam overlap in the

    asked on October 22, 2014
  30. Math

    What is the probability of tossing two coins and having them both show heads? Show all work. Please help I don't understand this.

    asked on April 9, 2013
  31. Math

    Uncle Ritchie has some $10 bills in his wallet. He shares all of them equally among his 4 nieces and nephews. Each of the nieces and nephews then donates two $10 bills to charity. They then each have five $10 bills. How many $10 bills did Uncle Ritchie

    asked on March 22, 2013
  32. Social Studies

    How did being part of the Arab Islamic world affect Spain?

    asked on December 6, 2012
  33. math

    I just finished doing my math study guide for a test and there is one question that I don't know how to do. It is: f(x)=5-2x and g(x)=x^2=7x, find each value. a. g(3) b. f(2)+g(-1) c g(2x) I do not understand this at all, could someone explain this to me?

    asked on September 26, 2017
  34. Circle geometry

    Please help Explain how I figure this out. A circle has diameter 70cm. A chord in the circle is 50cm long. How far is the chord from the center of the circle? I have been stuck on this for days. I appreciate any help. Thank you!!

    asked on April 10, 2014
  35. Math

    Please Help!!!!!!! 1/2+4/7p>13/10 The p is beside 4/7. I have been stuck on this all morning any help and how it was solved would be appreciated. Thanks for your time and help.

    asked on February 13, 2014
  36. Science

    In an experiment to find out how the proportion of cement in a concrete mixture affects the products strenghth what would be two controlled variables and what could a possible source of error in this experiment be ? Thank you for your help!

    asked on October 22, 2013
  37. Social Studies

    To what extent did the Japanese worldview change during the Meiji period.

    asked on May 30, 2013
  38. Math

    Every time Mr. Cold born throws a ball of paper in the garbage can, the probability the ball goes in the cans is 3/4. What is the probability he misses 2 times in a row? Please show all work. Please help I don't understand probability

    asked on April 9, 2013
  39. Math

    The cost of Admission to a fair is $10, plus $3 per ride. An equation for this relation is C=10+3r, where r represents the number of rides a person goes on, and C represents the total cost of admission and rides. Make a table of values for the relation .

    asked on March 26, 2013
  40. Math

    Please help!!! Scott bought 54m of fencing to enclose a rectangular plot of land. The width of the rectangular plot is 12m. Assume Scott uses all the fencing. What is the length of the rectangular plot of land? a) choose a variable to represent the length

    asked on March 22, 2013
  41. math

    Explain why the product of an integer multiplied by itself cannot be negative.

    asked on October 17, 2012
  42. Math

    Solve this linear equation, y-x divided by 2=5 x-y divided by 5=13

    asked on January 11, 2015
  43. Math

    Choose any number for p. Determine whether the following equation is true. (2p-3)(p+4)=2p^2-5p-12 I don't think this is true. Am I correct?

    asked on November 18, 2014
  44. Math

    The formula l=8t^2/pi^2 represents the swing of a pendulum. In this formula, l is the length of the pendulum, in feet, and t is the time, in seconds, it takes to swing back and forth once. Whst is the length of a pendulum that makes one swing in 2s? Please

    asked on October 29, 2014
  45. Science

    Citric acid has the formula C3H3OH(COOH)3. How many atoms of carbon,hydrogen and oxygen are in each molecule? Please help I don't understand this!! Thank you

    asked on November 18, 2013
  46. Math

    A spinner has three congruent sectors colored orange, green, and purple. Every spin has has 1/3 chance of landing on any color and there is 1/9 chance of landing on orange and then on purple. There is 1/3 chance of landing on same color twice in a row. I

    asked on April 22, 2013
  47. Math

    Hi Steve, You helped me with a question earlier today about finding surface area of a triangular prism with the base being an equilateral triangle . I got the answer 386.6 Is this correct.? I tried to follow your equation and am having a bit of trouble.

    asked on December 3, 2012
  48. math

    Ms.Lecky ordered pizza for a party. 1 5/8 of the cheese pizzas and 2/3 of the ham pizza were not eaten. How much pizza was left?

    asked on October 31, 2012
  49. science

    I had to I an experiment where a balloon was tied to each end of a meter stick which was balanced on a pencil over two cans. I had to pop one balloon which caused the pencil, stick and other balloon to fall off the cans. I need to use particle theory to

    asked on October 10, 2012
  50. Math

    70 out of 35,000,000 are struck by lightening each year.what is probability of being struck by lightening each year? Express this probability as a fraction reduced to its simplest terms,as a ratio,and as a percent

    asked on May 2, 2012
  51. math

    When two die are tossed,throwing a sum of 7 is three times more likely than throwing a sum of 11.if the probability of throwing a sum of 11 is 1:18,what is the probability of throwing a sum of 7?

    asked on May 2, 2012
  52. Microbiology

    Four questions ... 1) How can you account for the observation that a mass or colony of bacteria shows pigmentation while the individual cells have transparent cytoplasm? 2) What factors may alter the expression of the cultural characteristics of bacteria?

    asked on March 27, 2008
  53. english

    A. Need to know if the following is Noun, adjectival or adverbial clause. !. When I was outside, I saw a blue jay. 2. The city of Austin is the city that I call home. 3. I once saw a tortoise in my back yard, and I have seen a raccoon on the patio. 4.

    asked on September 10, 2017
  54. Math 11

    The time for a swing to move forward and backwards is determined by this formula. T=2pi sqrt L/9.8. T is the time, in seconds,taken for the swing to move through one complete cycle. L is the length of rope supporting the swing. Determine the length of the

    asked on February 26, 2016
  55. Trigonometry

    Johns eyes are 6 ft from the ground. He is standing 70 ft away from a tree. If the angle of elevation is 24 degrees, then how tall is the tree?

    asked on October 19, 2014
  56. Math-trigonometry

    Please help me with the steps !i don't understand this. The working arm of a tower crane is 192m high and has a length of 71.6 m. Suppose the hook reaches the ground and moves along the arm of the trolley, a) determine max distance from hook to operator

    asked on October 8, 2014
  57. Math

    A souvenir consisting of a cube with an inserted sphere is made to represent Earth. Both pieces are made out of solid crystal. The sphere replaces one quarter of the volume of the cube. Calculate the volume of the souvenir piece. The sphere has diameter of

    asked on September 24, 2014
  58. Math

    Please Help!!, The dimensions of a photo of a mountain bike are 15cm by 12cm. An enlargement is to be made for a poster with dimensions 4.0m by 3.2m. What is the scale factor of the poster to the nearest tenth?

    asked on February 24, 2014
  59. Math

    (-1/2)+3/5/[9/10-(3/5)] I got 1/15 is this correct? I don't think so please help and explain how you did this :)

    asked on October 28, 2013
  60. Math

    I really need help please!! Karen, Gavin, Nasra, and Ali each have a deck of cards. Each student randomly draws a card from the deck. Find the probability of each event. a) each student draws a club. b) Karen draws a red card, Gavin draws a king, Nasra

    asked on April 19, 2013
  61. Math

    Karen, Gavin, Nasra, and Ali each have a deck of playing cards. Each student randomly draws a card from the deck. Find the probability of these events: a) Each student draws a club. b) Karen draws a red card, Gavin draws a king, Nasra draws a black card,

    asked on April 18, 2013
  62. Math

    Each time Parker shoots a free throw in basketball, he has an 80% chance of making the shot. Suppose he is given 3 free throws. Find the probability of each event. a) Makes the basket, misses the basket, makes the baset b) makes all 3 shots Please help

    asked on April 17, 2013
  63. Science

    Please please help this is the second time I have posted this question. Calculate the amount of work it will take to lift a lawn mower with a mass of 8kg onto the back of a truck which is 0.75m off the all conversions in your work.

    asked on April 9, 2013
  64. science

    A hydraulic jack is needed to raise an object with a force of 4000 N to a height of 3 metres above the ground. Will the jack do the job? (Answer after working through the rest of the question. I would really appreciate it if someone would please help me

    asked on April 9, 2013
  65. math

    One-quarter of the chicken pieces in the dish are wings. There are 7 wings. Hiw many chicken pieces are in the dish? Write an equation to solve the problem.

    asked on March 19, 2013
  66. Science

    Glass bricks are used where people want light allowed through, but still have privacy. What do the bricks do to make this happen? Please help I have searched everything and can not find the answer.

    asked on January 11, 2013
  67. Math

    When you divide a proper fraction by an improper fraction, is the quotient less than 1,greater than 1,or equal to 1? I think it is less than one but I'm not sure

    asked on November 12, 2012
  68. Math

    Why are 2/3, 4/6, and 6/9 equivalent fractions?

    asked on October 17, 2012
  69. math

    Using these integers:-1,+6,-8,+3,-2 a) Which integers have the greatest product? Show your work. b) Which two integers have the least product? Show your work. Please help I don't understand how to figure this out thank you

    asked on October 3, 2012
  70. science

    Mount Everest stands at 8,850 meters high. Every year it grows 1cm. How many meters high will this mountain be in 50,000 years

    asked on May 15, 2012
  71. math

    I have to do a crossword puzzle in geometry.One of the questions is where perpendicular line segments cross. It is five letters long with o being the second letter. Please help

    asked on May 9, 2012
  72. Math

    Ryder tossed two coins 50 times.He recorded two heads 11 times. A)what is the experimental probability of obtaining two heads as a percent? b)the theoretical probability of obtaining two heads is 25%.How could Ryder repeat the experiment to obtain an

    asked on May 4, 2012
  73. algebra

    An electrician working on a project spent one-third of his time wiring the main service. If the electrician spent 4hours wiring the main service,how much time did he spend on the project? Write an equation to solve the problem. Use algebra to solve the

    asked on April 26, 2012
  74. math

    I bought a computer game for $20.00 off the original price. My rate of discount was 40%. What is the original price?

    asked on June 3, 2008
  75. Math

    Simplify (27t^2)^2/3

    asked on November 14, 2014
  76. Math

    A traditional Haida hand drum has a diameter of 14 7/8 in. and is 3 in deep. What is the minimum amount of hide used to make the drum if the hide covers only the top and lateral surfaces? PLEASE HELP!! Thank you

    asked on September 22, 2014
  77. Circle Geometry

    A wheel has radius 30 cm.It rolls along the ground toward a tack that is 58cm from the point where the wheel currently touches the ground. What is the distance between the tack and the closest point on the circumference of the wheel! I don't understand

    asked on April 9, 2014
  78. Physics

    Ken has five 200W security lights on outside of home. How much energy do the security lights use in 8 hrs? If the cost of electricity is 8 cents per kWh,what is the cost of operating the security lights ? Please help I'm not sure which formula to use?

    asked on March 12, 2014
  79. Math

    Please help explain how to get answer! -8.6*14.6-5.3/[(-19.4)-8.6]/(-2.9)*6.3-(-9.5)

    asked on October 30, 2013
  80. Math

    How do I write -2.3 as a rational number?

    asked on October 21, 2013
  81. Math

    Is -6/5 greater than -5/6?

    asked on October 21, 2013
  82. Math

    -3/4-1/2 I get -1/4 but my dad is saying -1 1/4. Can you please help with the answer and explain how you came up with it? Thank you

    asked on October 10, 2013
  83. Math

    I have to determine the unknown length of a right triangke to the nearest tenth of a unit. One side is 7m and the base is 10m. I got a friend to do this and age came up with 7.1m as the answer. When I do the steps I get the answer 12.21. I believe my

    asked on September 13, 2013
  84. Math

    t/-9 + 8= -5 Please help with this when I do it my answer is not -5.

    asked on March 19, 2013
  85. math

    The Grade 8 students had a graduation dinner. They paid a flat rate of $125 for the use of the hall, plus $13 for each student who attended. The total cost of the dinner was $944. How many students attended the dinner ? Write an equation to solve the

    asked on March 14, 2013
  86. Science

    What happens to refraction when the angle of incidence lies on the normal line?

    asked on January 9, 2013
  87. Math

    The surface area of a cube is 150cm squared. The area of one face of the cube is 25cm squared. What is the length of one edge of the cube?

    asked on November 28, 2012
  88. Math

    A dock is 7 3/4m high. The portion of the dock above water one day was measured at 2 2/5 m high. How much of the dock structure was below water that day?

    asked on October 31, 2012
  89. Math

    Solve the problem. Estimate to check your solution is reasonable. 1. During a 1 hour phone in talk show eight callers made calls hat took 3 1/4 minutes each. a) How many minutes were used by the eight callers? b) what fraction of the hour was used by

    asked on October 31, 2012
  90. Chemistry

    By using the data in this question, estimate how much oxygen a person requires on average in a life time and how far a motor can go using the same amount of oxygen. the typical daily food requirement of a person can be considered to be 1.2 kg of

    asked on June 3, 2012
  91. science

    Using absolute dating,a fossil is dated to be 3 million years old and decomposed 1 half-life. If it takes the same fossil 12 million years to decompose to 4 half-lives,how old will the fossil be when it is measured to be at 3half-lives?

    asked on May 25, 2012
  92. English

    Has anyone read the poem the "Passenger Pigeon" by Paul Fleischman? This poem is a concrete poem and I need to answer the question because of the way the words are laid out, what do they picture? Please help thanks

    asked on April 30, 2012
  93. math

    complete the following number sentences so that the answer to each is 1

    asked on February 2, 2012
  94. maths

    2-Log base 10 5

    asked on May 19, 2017
  95. Math1

    Reuben bought a ski helmet from an online sports store. The helmet was shipped to his home in Stirling, Alberta from Provo. Utah. The list price of the helmet was $165.00 US. On the day Reuben purchased the helmet, the currency exchange rate was $1 US=

    asked on June 28, 2016
  96. Biology

    Could someone please help me with this question. 1100KJ in the form of x*y^2 Thank you for your time and help

    asked on September 25, 2015
  97. Math

    Could someone please help me. Solve the linear equation by substitution. Y=10-2.2x 5x+y=70 For the first equation I am getting x=21.4 and for the second equation I am getting y=-37. The answers are 21 3/7 and -37 1/7. Could you show me how you do this so I

    asked on January 4, 2015
  98. Math Linear Equations

    Two lines are drawn on a co-ordinate axis. The equation of the first line is y=-2,and the equation of the other line is y=3x+1. What are the co-ordinates of their intersection point? I have been on this for hours and can't figure out how to do this. Please

    asked on January 2, 2015
  99. Math-Linear Equations

    True or false? A line perpendicular to a line whose slope is -0.75 has a slope of 1.3 repeating. Please help me with this.Thank you

    asked on January 2, 2015
  100. Math

    Factor 2y^4+y^2-10y+5 Please help!thank you

    asked on November 24, 2014


  1. 1
  2. 2