Bianca

Popular questions and responses by Bianca
  1. chemistry

    Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose, 0.10 m BaCl2, 0.20 m NaCl, and 0.20 m Na2SO4.

    asked on March 8, 2011
  2. Chemistry

    how many moles of Ba(OH)2 are present in 295mL of 0.400 M Ba(OH)2?

    asked on October 29, 2010
  3. math

    What is 1/10 of 200?

    asked on September 27, 2014
  4. college

    The width of a rectangle is 25% of the length. The perimeter is 250 cm. Find the width and the length of the rectangle.

    asked on April 11, 2011
  5. Multiplicative inverse

    Is the multiplicative inverse for 12/13 13/12?

    asked on October 13, 2010
  6. Calculus

    A rectangular page is to contain 8 square inches of print. The margins at the top and bottom of the page are to be 2 inches wide. The margins on each side are to be 1 inch wide. Find the dimensions of the page that will minimize the amount of paper used.

    asked on May 7, 2017
  7. physics

    Consider the static equilibrium diagram below. What is the net force acting along the positive x-axis?

    asked on June 19, 2015
  8. earth, science

    Which of the following statements describes the development of the geologic time scale? A) Scientists developed the geologic time scale using fossilized remains from Europe and Asia. B) Scientists developed the geologic time scale by studying rock layers

    asked on October 14, 2013
  9. Math

    assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 62 mph and standard deviation of 5 mph. What percent of cars are traveling faster than 62 mph? How would I work this problem out?? Thanks for any

    asked on February 20, 2010
  10. social studies

    The Athenian assembly appointed 10 generals who a. collected taxes b. led armies into battle c. carried out the assembly's law d. tried to increase trade I think its B

    asked on November 23, 2016
  11. bio

    A large population of laboratory animals has been bred randomly for a number of generations. There was an interesting revelation. The scientists noted that there was neither an increase nor a decrease in the frequency of animals displaying the recessive

    asked on March 10, 2016
  12. Chem II

    Calculate the pH of 500. mL of 0.100 M acetic acid, CH3COOH, which also contains 0.100 mole of sodium acetate, NaCH3COO. How do you set this up step by step?

    asked on November 26, 2012
  13. calculus

    Evaluate the integral: ç[(6x+7)/(x^(2)-8x+25),x]

    asked on November 29, 2011
  14. chemistry

    what volume of carbon dixoide (CO2) will be produced if 2.90 moles of iron (Fe) is produced

    asked on April 19, 2010
  15. science

    According to the rock cycle, which of the following transitions are possible? Assume an unlimited number of steps. A. An intrusive igneous rock becomes a sedimentary rock. B. A sedimentary rock becomes soil. C. A metamorphic rock becomes an extrusive

    asked on January 28, 2009
  16. physics

    A bus and a car have an inelastic head-on collision. The bus has a mass of 1.5 × 103 kilograms and an initial velocity of +20 meters/second. The car has a mass of 9.5 × 102 kilograms and an initial velocity of -26 meters/second. What is their total

    asked on February 25, 2016
  17. Science

    A basketball is dropped from a height of 2m and has a rebound of only 1.5m. what happened to that energy that was lost?

    asked on March 26, 2015
  18. American Politics

    Which of the following was a primary influence on the Framers as they drafted the Constitution? A. French Revolution B. French and Indian Wars C. advocacy for states' rights by John Adams. D. revising the Articles of Confederation Is D. the answer

    asked on November 13, 2013
  19. Science

    A stone with a mass of 225.0g is placed into a graduated cylinder with a starting volume of 200.0ml. If the water in the cylinder is displaced to 225.0 ml, calculate the volume of the rock and its density.

    asked on October 8, 2013
  20. english

    which sentence contains a verb in the simple past tense? a.the patient complained of pain in the knee. b.the patient had complained of pain in the knee. c.the patient complains of pain in the knee. d.the patient will complain about pain after surgery

    asked on February 20, 2013
  21. english

    select the antecedent of the pronoun in the following sentence:The students will take their final exams before the classrooms are renovated. a.student b.their c.exams d.classrooms

    asked on February 20, 2013
  22. english

    identify the object of the preposition in the following sentence:the young boy put his shoes under the bed

    asked on February 20, 2013
  23. geometry

    Find the volume of a rectangular prism whose dimensions are twice those of another rectangular prism that has a volume of 120 cm3

    asked on April 9, 2012
  24. question

    A temperature of 41 degrees F is equivalent to 278.2 degrees K, while a temperature of 86 degrees F is equivalent to 303.2 degrees K. Find the equation converting Kelvin temperature to Fahrenheit. What is the Fahrenheit temperature when it is 180 degrees

    asked on March 1, 2011
  25. algebra

    Find the functional values f(-2), f(0), and f(1) for the function. ƒ(x) = X²- 1

    asked on March 1, 2011
  26. Pre-algebra

    Lydia wrote 4.5 pages on her science report in 1 hr.What was her writing rate in pages per minute?

    asked on November 29, 2010
  27. math

    The measure of the supplement of an angle is 20 degrees more than three times the measure of the original angle. Find the measures of the angles.

    asked on August 28, 2010
  28. Physics

    a mover is pushing on a very large box with a force of 850N but he cant get it to move. what force is the box exerting on the mover?

    asked on October 8, 2019
  29. Physics

    A force of 400N is applied to a brass of length 1.9m and cross-sectional area 1.2*10^11, find the extension of the brass?

    asked on May 17, 2019
  30. Social Studies

    The Ancestral Puebloans were one of the most recent cultures of the Southwest.

    asked on February 19, 2019
  31. Chemistry

    I need ho design an experiment on the dissolution of NH4NO3 in water. My independent variable is the amount of solvent (water) while my dependent variable will be the difference in temperature before and after the reaction. What could the hypothesis and

    asked on February 26, 2018
  32. Math

    What is 1 2/10×5simplified to

    asked on September 13, 2016
  33. Math

    Father Armando the math teacher adds Bens and the Indians scores atop each other and gets these numbers. 1, 2, 6, 7, 10, 12 Also, go back for Seconds.

    asked on June 15, 2016
  34. Math

    How do you find the height of a scalene triangle when the base and the two side lengths are different? The measurements are base - 12 cm one side - 8 cm the other side - 7 cm I need the height to find out the area

    asked on June 9, 2016
  35. Math

    If 3b+12=5(b-4), what is b?

    asked on May 10, 2016
  36. Math

    The measure of one acute angle of a right triangle is twelve more than three times the measure than the other acute angle. Find the measure of each acute angle of the right triangle.

    asked on April 20, 2016
  37. bio

    The frequency of an allele ‘a’ in a natural population is 0.49. What percentage of the population is homozygous for this allele? Calculate the exact value; do not round up or give an estimate. Answer in units of %.

    asked on March 10, 2016
  38. Organic Chemistry

    Which is more polar trans-methyl cinnamate or trans-chalcone?

    asked on December 1, 2015
  39. physics

    A shopper pushing a cart through a store moves 30.0 m south down one aisle, then makes a 90◦ turn and moves 11.0 m. He then makes another 90◦ turn and moves 22.0 m. What is the magnitude of the smallest possible displacement the shopper could have? You

    asked on October 7, 2015
  40. Science please help

    I am doing a crossword puzzle that has statements that you write their answers in the right column. I have two that I can't get. Heart of a scientific investigation what I have so far: --e-t-- standard of comparison for checking the results of an

    asked on September 10, 2015
  41. physics

    The two sets of magnetic-field coils,used to form the pictures on the screen, are _______ to each other. Parallel or perpendicular

    asked on February 26, 2015
  42. math

    given geometric series is 256+p+64-32 determine the value of p?

    asked on February 15, 2015
  43. Collega Algebra

    Let f(x) = (2/4^x + 2) for real numbers x. Evaluate f(1/2001) + f(2/2001) + ... + f(2000/2001).

    asked on January 22, 2015
  44. Math, Please Help! I don't understand!

    Hi guys, please help me!1 I am having a tough time understanding this equation. Best answer goes to the person who shows there work. So... here is the equation... At the half time show, a marching band marched in formation. The lead drummer started at the

    asked on November 4, 2014
  45. MATH

    Juan has 28 paperback books. Each book is 1 1/4 inches wide. Will all his books fit on one shelf? If not, how many will fit and how many will have to go on another shelf? If yes, how many more paperback books, if any, will fit on the shelf?

    asked on October 23, 2014
  46. Algebra 1

    Jenny simplified the expression 7x + 5y + 4(x – y) – 6 and listed the Number Properties used: c) Redo the problem correctly. Justify each step using the correct Number Property. (2 points) Jenny’s Work Number Property Used 7x + 5y + 4(x – y) – 6

    asked on October 2, 2014
  47. math

    What is 1/10 of 200?

    asked on August 19, 2014
  48. Chemistry

    A sample of oxygen gas at 295 kPa takes up 456 L of space at standard temperature (the “T” in STP). What is the new volume when the pressure is lowered to standard pressure (the “P” in STP)?

    asked on February 26, 2014
  49. american history

    The federalist papers______________ A. Were written to persuade the public to support ratification of the Constitution. B. were an attack against the Framers and supported continuation of the Articles of Confederation. C. were written by three of the

    asked on November 14, 2013
  50. American History

    How many words are in the U.S. constitution. A. 17,000 B. 30,000 C. 7,000 The Answer is C

    asked on November 14, 2013
  51. American History

    How Many words are in the US Constitution? A. 7,000 B. 30,000 C. 17,000 The answer is B

    asked on November 13, 2013
  52. American History

    Which of the following relationship is NOTan example of the checks and balances built into the Constitution? A. Supreme court decision can be overturned by an amendment to the Constitution. B A presidential veto can be overturned by a supermajority of

    asked on November 13, 2013
  53. Science

    The dimensions of an object are 3.5 cm, 3.5 cm, and 2.9 cm. Its mass is 6.0g. Calculate the volume and density of the object. Will it float or sink? Please help me with my other question too. Thank you !!!

    asked on October 8, 2013
  54. MATH

    SUPPOSE A BEAD MAKER WANTS TO SEPARATE 10,000,000 BEADS INTO BOXES.SHE WILL PUT 100,000 BEADS INTO EACH BOX WOULD SHE PUT THE 4,358,216TH BEAD?

    asked on September 1, 2013
  55. Math

    Sin2x+cosx

    asked on July 8, 2013
  56. Math

    2 cm green square is painted on a triangle with a base of 6 and a height of 7. A dot will be randomly placed on the triangle. What is the probability the dot will be placed outside of the square?

    asked on June 5, 2013
  57. math

    x 65 ft. ____ = _______ 3 ft. 39 ft.

    asked on April 15, 2013
  58. English

    While you're working in a sales office, the office manager says that the sales staff should try to use an empathetic tone when speaking with customers. In the word empathetic, the root means a.to give. b.to feel. c. to come d.to force.

    asked on April 8, 2013
  59. math

    Kim has 4/10 of a dollar. Carla has 40/100 of a dollar. Who has more money? Explain

    asked on March 5, 2013
  60. math

    Colin has 3 quarters. He says he has less than 8/10 of a dollar. Is he correct? Explain

    asked on March 5, 2013
  61. math

    Red=1 blue=1 Hans spent 6 minutes painting each of his fence posts. What fraction of his fence posts did he paint red and blue? How long did it take him to paint the red and blue posts?

    asked on March 4, 2013
  62. math

    The blackberry cobbler recipe makes 8 equal servings. Nina, Jack, and Cameron each ate 1/4 of the servings. How many servings of cobbler were left over?

    asked on February 26, 2013
  63. books

    How do i do a book summary?

    asked on February 21, 2013
  64. math

    Trey keeps sports cards in 3 drawers. Each drawer contains exactly 120 cards. In each drawer 2/3, of the cards are baseball cards, and 1/3 of the cards are a mixture of football, hockey, baseball, and soccer cards. If Trey decides to trade 1/4 of his

    asked on February 21, 2013
  65. english

    in which of the following sentence is the verb in the active voice?a.the boy was called by his mother. b.we were told that jim is ill. c.the telephone bill was paid yesterday.d.the mother called her son for lunch.

    asked on February 20, 2013
  66. english

    identify the object of the preposition in the following sentence:the young boy put his shoes under the bed.a.put b.shoes c.under d.bed

    asked on February 20, 2013
  67. Basketball Current Event

    Dear Tutor, I have to do a current event for Physical Education on basketball. My problem is that I don't know anything about basketball and my coach wants it to be on a famous basketball team that has recently played. Can you help me find an article. I am

    asked on February 18, 2013
  68. Basketball Current Event

    Dear Tutor, I have to do a current event for Physical Education on basketball. My problem is that I don't know anything about basketball and my coach wants it to be on a famous basketball team that has recently played. Can you help me find an article. I am

    asked on February 18, 2013
  69. physics

    A baseball pitcher throws a fastball at 51.6 m/s. If the batter is 18 m from the pitcher, approximately how much time does it take for the ball to reach the batter?

    asked on February 18, 2013
  70. math

    Indira bought 6 yards of material for drapes and a bag of buttons. She spent a total of $39. If the buttons cost her $3, how much was each yard of material?

    asked on February 6, 2013
  71. math

    Gina cut a piece of ribbon into 3 equal pieces. Then she cut 2 inches off one piece to make a piece 3 inches long. How long was Gina's original piece of ribbon?

    asked on February 6, 2013
  72. science

    please give me 10 examples of suspension

    asked on January 5, 2013
  73. Chem II

    Find the mass of sodium formate that must be dissolved in 200.00cm^3 of a 1.0M solution of formic acid to prepare a buffer solution with pH=3.40? I have no clue how to work this out. Please help me.

    asked on November 19, 2012
  74. Chem II/College

    Using the Clausius Clapeyron equation determine the vapor pressure of water at 50.0 degrees C. The molar heat of vaporization of water is 40.7 kJ/mol. How do you solve this?

    asked on October 7, 2012
  75. Math

    The perimeter of a rectangular soccer field is 20/3 meters. If the width of the soccer field is the reciprocal of the length, find the dimensions of the soccer field.

    asked on September 22, 2012
  76. Math

    If a certain number, x, is added to 4/(x+1), the result is 3. Find the number.

    asked on September 22, 2012
  77. Math

    The sum of the reciprocal of 5 and the reciprocal f 7 is the reciprocal of what number?

    asked on September 19, 2012
  78. Statistics

    Given that the Number of Grantees of a Driver's License in a small country in the month of April are .... 1,200 for professionsl 3,350 for non-professional 2,450 for students If you want to make a study of the correlation between driving habits and number

    asked on September 2, 2012
  79. Science (Microscope)

    Explain why some parts are in focus and some part are out of focus when you are trying to focus an object under the microscope.

    asked on August 19, 2012
  80. Math

    The length of a rectangle is 2 more than twice its width. If the area of the rectangle is 24 sq. m., find its dimensions.

    asked on July 27, 2012
  81. Math

    HELP! i have no idea how to do this! A rabbit population satisfies the logistic equation dy/dx=2x10^7y(10^6-y), where t is the time measured in months. The population is suddenly reduced to 40% of its steady state size by myxamatosis. If the myxamatosis

    asked on May 24, 2012
  82. geometry

    Find the height of a cone with a volume of 138 cubic meters and a base area of 46 square meters

    asked on April 9, 2012
  83. geometry

    Find the height of a cone with a volume of 138 cubic meters and a base area of 46 square meters

    asked on April 9, 2012
  84. chem 110

    if a 72g.ofHCL( molar mass=36g./mol) is in 200-ml what is the molarity

    asked on December 20, 2011
  85. calculus

    Evaluate the integral ((6x+7)/(x^(2)-8x+25))dx. Please and thank you.

    asked on November 29, 2011
  86. chemistry again

    If you are given V1=410 ml T1= 27 C= 300 K P1= 740 mm Find V2 in ml at STP When given STP= 273K and 1 atm

    asked on October 22, 2011
  87. chemistry/ partial pressure

    N2 was collected over water at 25 degrees C. The resulting pressure was 705 torr. The vapor pressure of water at 25 degrees C is 23.8 mm. What is the partial pressure of N2?

    asked on October 22, 2011
  88. chemistry

    Given 6.00 L of N2 at -25 degrees C. Find Vol in L at 100K

    asked on October 22, 2011
  89. math

    one side of a triangle is 1.5 inches long.the two angles it touches are 30 and 100 degrees

    asked on September 21, 2011
  90. Math

    A drawer contains 22 black socks, 22 white socks, 22 blue socks, and 22 brown socks. If the light is off and Matt reaches into the drawer to get his socks, what is the minimum number of socks he must pull out in order to be sure that he has a matching

    asked on September 5, 2011
  91. Math

    Solve for x: x2 + 4x + 2 = 0

    asked on August 9, 2011
  92. Math

    Determine the values of x for which x-5/3x+6 is undefined

    asked on August 9, 2011
  93. Math

    Harry has test grades of 85, 87, and 77 on his first three algebra tests. What must he get on his fourth test to earn an average of at least 84?

    asked on August 9, 2011
  94. geometry

    A pole makes an 85 degree angle with the ground what is the measure of the angle the pole makes with the vertical?

    asked on April 20, 2011
  95. algebra

    When the like terms are the same number but opposite (positive and negative) would they cancel each other out?

    asked on April 17, 2011
  96. Math. Help me please!

    The two circles have equations x^ + (y-3)^2 = 49 and x^2 + (y-17)^2 =49. find the equation of the larger circle. The diagram looks like two circles on top of the other then a large circle outside.

    asked on April 14, 2011
  97. algebra

    1.56 x 10^2 + (5^2)^4=?

    asked on April 12, 2011
  98. algebra

    (3+2)^2 x 6^9

    asked on April 12, 2011
  99. math

    a certain company makes inflatable swimming pools that come in four rectangular sizes.the length of each pool is twice the width and twice the depth.the pools are 1 foot ,2 feet,3 feet and 4 feet deep.what is the area of the surface of tge water of each

    asked on April 11, 2011
  100. CRIMINOLOGY

    Does the states criminal system follow the rule of law which is set forth in the constitution and is federal law?

    asked on April 9, 2011

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