Sanaya

Most popular questions and responses by Sanaya
  1. Probability #3

    Please check my answers. Thank you! The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot, where each slot has an equal chance of capturing the

    asked on January 28, 2016
  2. Math

    Another card game. In a new card game, you start with a well-shuffed full deck and draw 3 cards without replacement. If you draw 3 hearts, you win $50. If you draw 3 black cards, you win $25. For any other draws, you win nothing. (a) Create a probability

    asked on January 29, 2016
  3. Probability #2

    Baggage fees. An airline charges the following baggage fees: $25 for the rst bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 34% have one piece of checked luggage and 12% have two pieces. We suppose a negligible portion of

    asked on January 28, 2016
  4. Chemistry-Dr.Bob

    An unknown piece of metal weighing 100. g is heated to 90.0 degrees Celcius. It is dropped into 250 g of water at 20.0 degrees Celcius. When equilibrium is reached, the temperature of both the water and piece of metal is 29.0 degrees Celcius. Determine the

    asked on January 9, 2016
  5. Chemistry-Dr.Bob, I need you!!!!

    You can mix 100.mL of 1.0 M HCl with 100 mL of 1.0 NaOH, both at 25 degree Celcius. The temperature of your calorimeter rises by 5.98 degree C, and its heat capacity is 100 J/degre C. How much energy is released per mol of H2O formed? My answer: 6x10^6 J

    asked on January 8, 2016
  6. Math

    Baggage fees. An airline charges the following baggage fees: $25 for the rst bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 34% have one piece of checked luggage and 12% have two pieces. We suppose a negligible portion of

    asked on January 29, 2016
  7. Chemistry

    I am stuck on b)... Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the

    asked on January 25, 2016
  8. Chemistry-Dr.Bob

    A solution is prepared by mixing 50.0mL of 0.001 M HCl and 10.0 mL of 0.200 M NaCl. What is the molarity of chloride ions in this solution? My work: (0.001 mol/L)((0.05 L)= 0.005 mol HCl (0.200 mol/L)(0.01 L)= 0.002 mol NaCl 0.005+0.002=0.007 mol of

    asked on November 20, 2015
  9. math

    A roll of fabric was 144 inches long. A customer bought 2 feet of the fabric. How many feet of fabric were remaining?

    asked on November 10, 2011
  10. Chemistry- Dr.Bob

    Why is cis-PCl3F2 polar and trans-PCl3F2 nonpolar?

    asked on November 28, 2015
  11. math

    A roll of fabric was 132 inches long. A customer bought 3 feet of the fabric. How many feet of fabric were remaining?

    asked on November 14, 2011
  12. Statistics

    Find the interquartile range given these data points: 57,66,69,71,72,73,74,77,78,7879,79,81,81,82,83,83,88,89,94. When I used the TI-84 calculator, I got ... Q1=72.5 Q3=82.5 IQR=Q3-Q1=82.5-72.5=10 But.. When I created a stem and leaf plot I found that Q2=

    asked on January 7, 2016
  13. Probabiliy

    Another card game. In a new card game, you start with a well-shuffed full deck and draw 3 cards without replacement. If you draw 3 hearts, you win $50. If you draw 3 black cards, you win $25. For any other draws, you win nothing. (a) Create a probability

    asked on January 28, 2016
  14. Probability #1

    Please check my answers. Thank you! Another card game. In a new card game, you start with a well-shuffed full deck and draw 3 cards without replacement. If you draw 3 hearts, you win $50. If you draw 3 black cards, you win $25. For any other draws, you win

    asked on January 28, 2016
  15. Chemistry-Dr.Bob

    Since most chemical reactions are conducted in containers open to the armisphere, why is the energy transfer associated with a chemical reaction generally expressed as the change in enthalpy? Is it because the enthalpy of reaction measures the change in

    asked on January 10, 2016
  16. Chemistry-Dr.Bob

    You can mix 100.mL of 1.0 M HCl with 100 mL of 1.0 NaOH, both at 25 degree Celcius. The temperature of your calorimeter rises by 5.98 degree C, and its heat capacity is 100 J/degre C. How much energy is released per mol of H2O formed? My answer: 6x10^6 J

    asked on January 8, 2016
  17. Chemistry

    Please check. HCl: dipole-dipole interaction HF: hydrogen bonding TiCl4: ionic bonding? CsCl:ionic bonding

    asked on January 29, 2016
  18. Statistics

    Find the interquartile range given these data points: 57,66,69,71,72,73,74,77,78,7879,79,81,81,82,83,83,88,89,94. When I used the TI-84 calculator, I got ... Q1=72.5 Q3=82.5 IQR=Q3-Q1=82.5-72.5=10 But.... When I created a stem and leaf plot I found that

    asked on January 7, 2016
  19. Chemistry

    Calculate the average kinetic energy of 1 mol of hydrogen molecules and of 1 mol of sulfur hexafluoride molecules at 25 degrees Celsius.

    asked on January 18, 2016
  20. Chemistry-Dr.Bob

    You are at your cabin in the woods. Will you be able to take a hot bath tonight if only 0.1 lb of propane remains in the tank? Explain. My answer: No, I will not be able to take a hot bath. By making assumptions and approximations, I got... energy released

    asked on January 11, 2016
  21. Chemistry

    Name the compound or give molecular formula. 1. Pt(NO2)2 : ? Is it Platinum (II) Nitrite 2. Manganese (II) bromide pentahydrate:? Is it MnBr2 • 5H2O

    asked on December 6, 2015
  22. Calculus

    Compute the surface area of revolution about the x-axis over the interval. y = x^2, [0, 4] Is it (pi/12)(65^2 - 65)^(3/2)?

    asked on December 7, 2015
  23. math

    Jenelle has a blue jug and a red jug, both containing water. The blue jug has 4 gallons and 1 quart of water in it, and the red jug has 2 gallons and 2 quarts of water in it. How much water is in both jugs?

    asked on November 16, 2011
  24. Chemistry

    Combusting 44.8L of H2 with 22.4 L O2 (both at STP) results in the formation of 44.8 L of H2O if the reaction is maintained at the same conditions (STP) and goes to completion. Given the heat of formation of water (= -241.8 kK/mol) calculate a) the PV work

    asked on January 26, 2016
  25. Chemistry-Dr. Bob

    Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings),

    asked on January 20, 2016
  26. Chemistry- Dr.Bob

    1. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 12 psi (vs. 14.7 psi at sea level). Under those

    asked on January 20, 2016
  27. Chemistry- Dr.Bob!

    1. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 12 psi (vs. 14.7 psi at sea level). Under those

    asked on January 20, 2016
  28. Chemistry

    Calculate the frequency of light associated with the emission from n=5 to n=4 in the hydrogen atom. I got -7.41 x10^13 Hz, but the answer would make sense if it is positive... So does this mean that when the electrons jump from n=5 to n=4, energy is

    asked on December 6, 2015
  29. Calculus

    Evaluate using long division. The integral of x/6x-5 dx How do I divide this?

    asked on November 19, 2015
  30. Chemistry -Dr. Bob

    Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings),

    asked on January 20, 2016
  31. Chemistry

    Why is the pressure of a gas does not depend on the molar mass of the gas?

    asked on January 18, 2016
  32. Chemistry

    Can pi bonds be made from d-orbitals?

    asked on December 6, 2015
  33. math

    Holly ordered 2 pounds and 9 ounces of roast beef and 3 pounds and 9 ounces of ham. How much meat did Holly order?

    asked on November 14, 2011
  34. Chemistry-Dr.Bob

    Why is gasoline (octane) better than diesal (cetane)?

    asked on January 11, 2016
  35. Chemistry

    Compute the surface area of revolution about the x-axis over the interval. y = x^2, [0, 4] Is it (pi/12)(65^2 - 65)^(3/2)?

    asked on December 7, 2015
  36. Chemistry-Dr.Bob

    What is the increasing dipole moment for CO,CS, and SiS? My answer: SiS

    asked on December 7, 2015
  37. Calculus

    How do I integrate sqrt of (1+e^(2x)) if doing u-sub.. u=sqrt of (1+e^(2x)) and ten using partial fraction...?

    asked on December 6, 2015
  38. Chemistry

    Can pi bonds be made from d-orbitals?

    asked on December 6, 2015
  39. Grammar

    Is it correct to say.. "This chicken tastes fabulous." Is the word "fabulous" used correctly in this context?

    asked on December 5, 2015
  40. Calculus

    How do you integrate (x-r)^2 (1/r) (e^(-x/r)) from the interval negative infinity to positive infinity?

    asked on November 27, 2015
  41. Calculus

    Integrate e^(-t/r) WITH RESPECT TO dt?

    asked on November 23, 2015
  42. Calculus

    How do you integrate e^(-t/r) dt?

    asked on November 22, 2015
  43. Calculus

    How do you integrate e^(-t/r)?

    asked on November 22, 2015
  44. Calculus

    Integrate x/(6x-5) dx The answer is 1/6 x + 5/36 ln abs (36x-30) + C... But I don't understand why it is 5/36 times ln.. I thought that when you factored out the 5 you would get 5 times ln abs (36x-30)..

    asked on November 21, 2015
  45. Calculus

    Calculate integral [0, infinity) xe^(-x) dx

    asked on November 21, 2015
  46. Calculus

    Integral sign 8x/(x-1) dx Is it 8x+8ln abs (x-1)+C ?

    asked on November 19, 2015
  47. Calculus

    Evaluate the integral. Problem#1 Integral sign 4dx/[(x+3)(x^2 +3x) Does it matter where A, B, and C is placed over. Is there a particular order? Is it ..... (A/x)+(B/(x+3))+(c/(x+3)^2=4 Or ... (A/x+3)+(B/x)+(C/(x+3)^2)=4 I am confused because I get

    asked on November 19, 2015
  48. math

    Each side of the shaded square is 1 unit. What is the length, width, and area of the figure?

    asked on February 4, 2013
  49. math

    The perimeter of a rectangle is 38 centimeters. The length is 7.5 centimeters. What is the width?

    asked on February 4, 2013
  50. math

    The area of a rectangle is 45 square inches. One dimension is 5 inches. What is the perimeter?

    asked on February 4, 2013
  51. math

    Holly ordered 3 pounds and 11 ounces of roast beef and 4 pounds and 10 ounces of ham. How much meat did Holly order?

    asked on November 10, 2011
  52. math

    Jennie and Millie are sister gorillas. Jennie is 57 kilograms and 663 grams,and Millie is 113 kilograms and 181 grams. How much do the sister gorillas weigh together?

    asked on November 10, 2011
  53. math

    Levi worked in his neighbor's yard for 7 hours trimming the trees. After trimming, he bagged up the trimmings in 38 minutes. How many minutes did he work in the yard altogether?

    asked on November 10, 2011
  54. math

    A sack of sand measures 21 kilograms and 714 grams,and a sack of yard clippings measures 7 kilograms and 192 grams. How much more does the sack of sand measure than the sack of yard clippings?

    asked on November 10, 2011
  1. Science

    Car has more speed becoz it has less mass than truck

    posted on December 14, 2018
  2. math

    you are correct i just needed help in this problem .thank you .

    posted on January 28, 2018
  3. math

    sex

    posted on February 25, 2017
  4. Chemistry

    Oops.. The subject for this one is calculus, not chemistry

    posted on December 7, 2015
  5. math

    i don't know

    posted on November 27, 2015
  6. finding perimeters

    Find the area of each square given s = 3.5yd

    posted on February 4, 2013
  7. math

    The answer is 8 feet remaining. 11-3=8

    posted on November 14, 2011
  8. math

    6lbs,2oz

    posted on November 14, 2011
  9. math

    add the pounds then add the ounces

    posted on November 10, 2011
  10. math

    60*7=420 420+38=458

    posted on November 10, 2011
  11. math

    14, 522

    posted on November 10, 2011
  12. math

    10

    posted on November 10, 2011