Aidan

Most popular questions and responses by Aidan
  1. chemistry

    Calculate the quantity of heat gained or lost: a) 3.50 mol H2O freezes at 0.0 oC b) 0.44 mol of steam condenses at 100 oC

    asked on June 16, 2011
  2. Math

    Rena knows a dollar coin has a mass of a little than 10 grams. She guessed that 1 kilogram of dollar coins would be worth dollars. Is this prediction reasonable ? Explain your thinking

    asked on March 21, 2016
  3. math

    there are 6 rows with 18 chairs in each row. in the center of the chairs, 4 rows of 6 chairs are brown. the rest of the chairs are blue. how many chairs are blue?

    asked on October 6, 2014
  4. PLEASE HELP ME! CHEMISTRY

    Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8155 sample of cobalt has an

    asked on August 29, 2011
  5. Math

    A carpenter is putting a skylight in a roof. If the roof measures 4x + 5 by 7x + 7 and the skylight measures 10x + 10 by 2x + 6, what is the area of the remaining roof after the skylight is built. Put your answer in factored form.

    asked on January 26, 2017
  6. Chemistry

    Which is a conjugate pair in the following equilibrium? H2C2O4(aq) + HPO4(aq) 2- HC2O4(aq)- + H2PO4(aq)-

    asked on September 1, 2016
  7. Chemistry

    What types of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H20 have a relatively strong or weak attraction?

    asked on March 4, 2010
  8. Physics

    Initial Statement: A soccer ball is kicked with an initial horizontal velocity of 15 m/s and an initial vertical velocity of 14 m/s. 1) What is the initial speed of the ball? 20.518 2) What is the initial angle θθ of the ball with respect to the ground?

    asked on August 28, 2016
  9. math

    five kids and three adults are going to the circus. kids tickets are on sale for half the price of adult tickets. the total cost is $60. how much is one kids ticket? how much is one adult ticket?

    asked on January 21, 2015
  10. physics

    It takes a plane flying at 150 km/h, 3.0 minutes to fly around a cloud at an altitude of 3000m. What is the diameter of the cloud

    asked on January 25, 2011
  11. Physics

    An 84 kg child descends a slide 7.2 m high and reaches the bottom with a speed of 3.30 m/s. How much thermal energy (in joules) due to friction was generated in this process?

    asked on October 12, 2016
  12. Biology

    what can you say about the amount of hydrogen ions relative tot he amount of hydroxide ions in a solution that has a pH of 2?

    asked on December 15, 2015
  13. Physics

    An automobile weighing 15,000 N crashes into a wall with a velocity of 5.00 m/s. If the car moves 0.150 m before coming to a stop, what average force does the wall exert on the car?

    asked on December 12, 2015
  14. algebra

    A cashier earn $x for an 8-hour day. Write an algebraic expression in terms of x for the cashier's a) hourly pay B) weekly pay for a 5 day week c) yearly pay for year of 52 weeks

    asked on January 25, 2010
  15. Math

    For what real values of c is x^2 + 16x + c the square of a binomial? If you find more than one, then list your values separated by commas. Need help...

    asked on January 4, 2017
  16. Chemistry

    Are the molecular and imperical formula of lauryl alcohol the same? C12 H26 O?

    asked on March 9, 2010
  17. MUSIC THEORY PLZ HELP

    ive been writing a composition for my school jazz combo. its in E minor. apparently i have to write the tenor sax and soprano sax in a different key signature. whats going on? Compose the tenor and soprano parts in a key signature that is relative to E

    asked on August 28, 2006
  18. Math

    For a certain day, the depth of water, h, in metres in Tofino, B.C at time t, in hours, is given by the formula: h(t)=7.8+3.5sin[pi/6(t-3)], tE[0,24]. Assume t=0 represents midnight. Provide an algebraic solution to determine the time(s) of day, the water

    asked on July 23, 2016
  19. CHEMISTRY

    IF you add ice at zero degrees celcius to a container of water maintained at 0degrees, the ice wil float on the water with that water finding a certain level in the container. As the ice melts, forming liquid at zero degrees, would you expect the water

    asked on August 30, 2011
  20. Physics

    Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 m/s. At the same instant, the other student throws a ball, B2, vertically upward at the same speed. The second ball just misses the balcony on

    asked on February 14, 2011
  21. Chemistry

    Write equilibrium Constant expressions (k) for the following reactions: Ni(s)+ 4CO(g) Ni(CO)₄ HF(aq) H(aq) + F(aq) Cl₂(g)+2Br(aq) Br₂(l) + 2Cl(aq)

    asked on January 27, 2010
  22. Math: Ratios

    The ratio of the number of people who own an iPhone to the number of people who own a Samsung is 5 to 3. If 500 more people on an iPhone then a Samsung how many people on each type of phone?

    asked on January 10, 2018
  23. Physics

    Hail of a diameter of 1 cm fall at a constant speed of 25 m/s. There is estimated to be 120 hailstones per cubic meter of air. Mass of each hailstone is .482g. Assuming the hail does not bounce, find the average force on a flat roof measuring 10m by 20m,

    asked on January 25, 2011
  24. Physics

    A cue ball travelling at 7.6 m/s strikes the eight ball. The eight ball moves away from the collision at an angle of 22 deg. on one side of the initial line of travel. The cue ball moves away at 33 deg on the other side of the initial line of travel. What

    asked on January 25, 2011
  25. Chem

    Find the number of protons and electrons of N-3. Would it be 7protons, and 4electrons? or 7 protons, and 7electrons?????

    asked on August 29, 2011
  26. Science Chemistry

    if 4.35 kj of energy are needed to heat a sample of water from 62C into steam at 100.0C what is the mass of the sample

    asked on December 6, 2017
  27. Chem

    Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8155 sample of cobalt has an

    asked on August 29, 2011
  28. maths

    what is a* in algebra

    asked on June 11, 2008
  29. physics

    A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h=37 m above the water's surface, as shown below. With what speed does it strike the water?

    asked on September 26, 2011
  30. Real World Problem: Ratios

    The Alpine ski resort has started to keep track of the number of skiers and snowboarders who bought season passes. The ratio of the number of skiers who bought season passes to the number of snowboarders that bought season passes is 2 : 3. If 250 more

    asked on January 11, 2018
  31. Math

    A 25 ft. Ladder is placed 8 ft. From the base of the house. How high up the side of the house can the ladder reach?

    asked on March 21, 2017
  32. math

    4=4*6-2+3 Where should I put the grouping symbols to make this true??

    asked on October 20, 2015
  33. 9th Grade Biology

    Assume that the fish have an average mass of 280g. The average caloric value is 8kcal/g. The heron is able to digest 60% of the fishes’ mass. How many will it need to eat to sustain its caloric intake of 3,000kcal/day?

    asked on September 20, 2012
  34. physics

    I am flying a plane capable of an airspeed of 100 km/hr. If the wind velocity was 45 km/h [95], in what direction would I have to fly in order to follow the track to my destination. And how long would this trip take? The distance between my starting point

    asked on October 3, 2011
  35. chemistry

    Will the following reaction occur Spontaneously? Show your work and reasoning in each case 1. Ca(s) + Sn^4+ -->

    asked on June 7, 2011
  36. Physics

    A rocket moves upward starting from rest with an acceleration of 32.5 m/s^2 for 4.52s. It runs out of fuel at the end of the 4.52 s but does not stop. How high does it rise above the ground?

    asked on February 14, 2011
  37. Chemistry

    This lab is ruining me. isopentyl acetate is a blend of isopentanol, acetic acid, and sulfuric acid. How can products be determined from this information? ethyl acetate is ethyl alcohol, acetic acid and sulfuric acid. Octyl Acetate is n-octanol,

    asked on January 13, 2010
  38. Chemistry

    What types of products would you expect to find in methyl salicylate, isopentyl acetate, ethyl acetate, and octyl acetate. I'm lost. Any ideas?

    asked on January 13, 2010
  39. what is solution to 1+(3)=9

    I'm having trouble with this question, not coming up with any of the possible answers. idk what I'm doing wrong

    asked on August 26, 2018
  40. Math

    Ben decides to get an ice cream cone. He is going to choose two toppings out of an available six. Ben also has to choose between a plane cone or a waffle cone. If he chooses vanilla ice cream how many different combinations of toppings and cones does he

    asked on July 31, 2017
  41. physics

    The terminal velocity of a 4×10−5 {\rm kg} raindrop is about 9 {\rm m/s}. Assuming a drag force F_{\rm{D}} = - bv, Assuming a drag force determine the value of the constant b.

    asked on March 27, 2011
  1. physics

    tf

    posted on April 29, 2019
  2. Physics

    yo this is garbage, didn't solve my question

    posted on January 3, 2019
  3. Algebra

    Its a low ha ,or aloha

    posted on April 4, 2018
  4. History

    the answer is A

    posted on February 21, 2018
  5. math

    I need help with the same thing if someone could do it for me I could really use the help

    posted on December 22, 2017
  6. Analogies

    steam

    posted on December 4, 2017
  7. Math

    When is this ever gonna matter at all no guy is gonna randomly ask you if the Missouri River is 2540 miles long and the Mississippi River is 23/25 of that length then what is the length of the Mississippi River and technically the correct answer is 2,320

    posted on October 19, 2017
  8. 7th grade health please Ms. Sue?

    -_- -_- =-=

    posted on February 20, 2017
  9. Health

    a pound of butter since lean meat has less fat than a pound of butter therefore a pound of butter has more calories

    posted on February 16, 2017
  10. Math I REALLY NEED HELP!!!!!!!!!

    I think it would be A because if you do (2,2) and multiply both the 2's by 4 you will get (8,8). I hope this helps.

    posted on January 19, 2017
  11. English

    The part about Harambe made my day haha

    posted on January 5, 2017
  12. math

    35m,40m

    posted on November 22, 2016
  13. Science

    speed is made of two things they are? Distance and time.

    posted on September 15, 2016
  14. Math

    your answer is C, because 5*12=60 and 20*3=60 ok

    posted on October 20, 2015
  15. Biology 205

    what purification process bears Louis Pasteur name

    posted on December 11, 2014
  16. Biology 205

    fdtwtw

    posted on December 11, 2014
  17. 9th Grade Biology

    Thank you SO much

    posted on September 20, 2012
  18. Pre-Algebra 7th grade.

    (94 - 6) / (66/6) = 88 / 11 = 8 88 / 11 = 8 8 = 8

    posted on September 20, 2012
  19. math

    hello zach.

    posted on February 1, 2012
  20. math

    90% by the way when converting decimals to percent times it by 100

    posted on October 3, 2011
  21. PLEASE HELP ME! CHEMISTRY

    Thanks!

    posted on August 30, 2011
  22. algebra

    You factor (x-3)(x+8) x= 3,-8

    posted on August 30, 2011
  23. PLEASE HELP ME! CHEMISTRY

    We get... OH wait, do we do 0.0569 X 1.8155g = 0.103g ? so cobalt60=0.103g

    posted on August 30, 2011
  24. Pre-Algebra

    The coordinates would be along the 270degrees line. It would be along the y-axis between the third and four quadrant line.

    posted on August 29, 2011
  25. chemistry

    you use the density formula density=mass/volume and solve

    posted on August 29, 2011
  26. Chem

    thank you!

    posted on August 29, 2011
  27. Chemistry

    Thanks so much for the help.

    posted on March 4, 2010
  28. Chemistry

    what happens at the molecular level if the temperature of a CO2/H2O solution increases? I know that has the temp. goes up the solubility decreases, but i don't really know what that means.

    posted on March 4, 2010
  29. Chemistry

    when the element have different states, ie. (aq) (s) (g) etc. doesn't that change the way you write the constant expressions?

    posted on January 27, 2010
  30. Chemistry

    This lab is ruining me. isopentyl acetate is a blend of isopentanol, acetic acid, and sulfuric acid. How can products be determined from this information?

    posted on January 13, 2010
  31. maths

    sorry what is a * in algebra

    posted on June 11, 2008