Questions Asked on
August 21, 2017

  1. chemistry

    A quantity of 85.0 mL of 0.900 M HCl is mixed with 85.0 mL of 0.900 M KOH in a constant-pressure calorimeter that has a heat capacity of 325 J/C. If the initial temperatures of both solutions are the same at 18.24C, what is the final temperature of

    asked by Daniella
  2. Algebra

    How many variable terms are in the expression 3x3y + 5xz − 4y + x − z + 9? (Input a numeric value only.) I already did this question and got it wrong, I just want to know the correct answer to prevent further mistakes. My answer is 5

    asked by Aldo
  3. Biochemistry

    What is the condensed structural formula of cyclopropane?

    asked by Karen
  4. science

    Which statements best describe how the properties of gases and plasmas differ? (Select all that apply). The particles of plasmas have a higher kinetic energy than the particles of gases. Gas particles are charged while plasma particles are uncharged.

    asked by lydia
  5. math 9th grade

    if xy is rational must either x or y be rational

    asked by maria
  6. Statistics

    Someone help me understand this please?? The following is a frequency data set for test scores in a small class. Construct a cumulative frequency plot displaying the data on your own paper, calculator, or StatCrunch. Then, describe the the graph in a

    asked by Amethyst
  7. Calculus

    Find the length of the parabola y^2=4ax cut off the line x=a about the x-axis

    asked by Kumkum
  8. science

    liquid water has a constant density. Do you agree or disagree with this statement? Why or why not? Be sure to support your argument by using what you have learned about the states and motion of matter.

    asked by lydia
  9. Physical Science

    How will you prepare a laboratory procedure to verify the validity of the hypothesis? Give example.

    asked by Michelle
  10. science

    liquid water has a constant density. Do you agree or disagree with this statement? Why or why not? Be sure to support your argument by using what you have learned about the states and motion of matter. please help

    asked by lydia
  11. physics

    A body of mass 5kg moving with a speed of 3m/s collides head on with a body of mass 3kg moving in the opposite direction at speed of 2m/s The first body stops after the collision The final velocity of the second body is Ans:3m/s

    asked by Thousif
  12. Statistics

    Which of the following is not true about histograms? A) The bars must touch each other. B) A histogram may be symmetric or skewed depending on the selection of bin width. C) Each bin must have the same width. D) Histograms may represent categorical data.

    asked by Amethyst
  13. History

    Iodine is a nonfuel mineral used in many different products, including pharmaceuticals, photography, and disinfectants. Why would iodine be influential to Oklahoma's economy? A. Oklahoma is the only state the produces iodine. B. More iodine is produced

    asked by NotAFan
  14. English

    The diction of "At the Tourist Centre in Boston" can best be described as A. Emotionally charged B. Colloquial and relying on slang C. Informal and simple D. Mostly figurative and abstract I'm stuck between "Emotionally charged" and "Mostly figurative and

    asked by Mitch
  15. SCIENCE

    why does a fly experience greater acceleration when it collids with a fast moving bus

    asked by KING
  16. physics

    Three particles of equal masses travelling with velocities of 10m/s,20m/s and 30m/s respectively along x-axis at an angle of 30° to the direction of positive x-axis and Y-axis collide simultaneously and get sticked to each other 1)The combined particle

    asked by Thousif
  17. Math

    How many rectangles can you build with a prime number of square tiles

    asked by May
  18. math

    At 3 p.m. the temperature was 9° F by 11p.m., it had dropped 31°F. What was the temperature at 11 p.m.?

    asked by Brice
  19. Math

    A map scale indicates that one centimeter equals 10 km two cities are 8 cm apart on the map how far apart are they in real life

    asked by Roommyy
  20. AP Calc

    A rational function f(x) contains quadratic functions in both the numerator and denominator. Also the function f(x) has a vertical asymptote at x=5, a single x intercept of (2,0) and f is removeably discontinuous at x=1 because the lim x-> 1 is -1/9. Find

    asked by Alex
  21. Maths

    The numerator of a fraction is 5 less than the denominator. If 1 is added to both the numerator and denominator the fraction would become 2/3. Find the fraction

    asked by Mohammad
  22. AP Global History

    How did these events (protestant reformation, counter reformation, commercial revolution, renaissance, crusades, scientific revolution, and ottoman expansion) lead to the age of exploration?

    asked by Maya
  23. History

    In what ways were the southern cities similar to the northern cities

    asked by Rose
  24. Maths

    Mr Lee start from her home,and goes 250m due south,then 200m due east,and finally 100 due south to a shopping mall.Find the distance between her home and shopping mall.

    asked by Lai
  25. Math about whole number

    apples are sold at 3 for $2 at busy mart. at big food, the same apples are sold at 5 for $2. kassim buys 15 apples from big foods instead of buys mart. how much does he save?

    asked by Yoopayo
  26. math

    5 years from now a boy's age will be 2 time the square of what it was 5 years ago.how old is he now? a)15/2 years c)7 years b)3 years d) 8 years

    asked by rebika
  27. Algebra

    Use the distributive property to write the sum as a product. 2x+2y

    asked by Jane
  28. chemistry

    Knowing that 1 mol of a certain monoprotico acid, HX, contained in 1 litre aqueous solution, this 50% ionized, point the value of its ionization constant.

    asked by snow
  29. English

    How is the fellowship of the ring similar to the aeneid?

    asked by Maya
  30. Maths

    Mr Lee start from her home,and goes 250m due south,then 200m due east,and finally 100 due south to a shopping mall.Find the distance between her home and shopping mall.

    asked by Anonymous
  31. Maths

    Hi I am new my friend told me to get help here.please can you help me by telling me an easy method to solve this. 9y+2x=

    asked by Gerard
  32. Math

    There were 49 students in a gym class.if 3/7 were boys and the rest were girls, how many boys were in the gym

    asked by Karla
  33. AP Global History

    How did rum represent the triumph and oppression of the first era of globalization?

    asked by Maya
  34. Science

    Paul road his bike from the bottom of his street to his friend’s house at the top of the hill on his street. He knew his PE was 5,000 J and ME was 25,000 J but wanted to find out his KE. What is Paul’s KE energy on his bike ride to his friend’s

    asked by Anon
  35. Calculus

    Show that volume of the solid generated by revolving y=1/x between x=1,2x=infinity about x-axis

    asked by Kumkum