some kid

Popular questions and responses by some kid
  1. AP Chemistry

    What is ksp for lithium carbonate? I got an answer of 2.40 x 10^-4 but i need to check that answer with somebody who can work this out

    asked on April 12, 2009
  2. Algebra 1

    The sum of the measures of angle A and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X? a) 20 degrees b) 35 degrees c) 50 degrees d) 65 degrees Is it d? Thank you!

    asked on December 14, 2015
  3. AP Chemistry

    The identity of an unknown solid is to be determined. The compound is one of the seven salts in the following table. Al(NO3)3•9H2O BaCl2•2H2O CaCO3 CuSO4•5H2O NaCl BaSO4 Ni(NO3)2•6H2O Use the results of the following observations or laboratory

    asked on January 5, 2009
  4. AP Chemistry

    In the titration of 50.0 mL of 1.0 M CH3NH2 (kb=4.4 x 10^-4), with 0.50 M HCl, calculate the pH a) after 50.0 mL of 0.50 M has been added b) at the stoichiometric point.

    asked on March 29, 2009
  5. chemistry

    SrH2 (s)+ 2H2O (l) >>> Sr(OH)2 (s) + 2H2 (g) Calculate the mass of hydrogen gas that can be prepared from 5.22 grams SrH2 and 4.35 grams of H2O. I keep getting 0.729 grams but its wrong...

    asked on September 19, 2009
  6. AP Calculus

    The position of a particle moving on the x-axis at time t>0 seconds is: x(t)= e^t - t^1/2. a) Find the average velocity of the particel over the interval [1,3]. b) In what direction and how fast is the particle moving at t= 1 seconds? c) For what values of

    asked on April 12, 2009
  7. AP Calculus

    Let R be the first quadrant region enclosed by the graph of y= 2e^-x and the line x=k. a) Find the area of R in terms of k. b) Find the volume of the solid generated when R is rotated about the x-axis in terms of k. c) What is the volume in part (b) as k

    asked on April 12, 2009
  8. AP Chemistry

    An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is analyzed and found to be 65.60 percent C and 9.44 percent H by mass. a.)Determine the empirical formula of the compound. b.)A solution of 1.570 grams of the

    asked on January 5, 2009
  9. algebra 1

    8. Simplify. x+7/x^2+4x-21 A. 1/x-3 B. x-3 C. 1/x-7 D. x-7 I went with A. Am I correct if not help me please?

    asked on April 28, 2016
  10. calculus

    Suppose f(x) is the function 2x^3+ 12x^2+ 21x + 3. Find the smallest value of f at which the tangent to the curve is 3. I did: f'(x)+ 6x^2+ 24x + 21= 3 = 6(x+3)(x+1), x= -3, -1 the correct answer is supposed to be -8

    asked on September 29, 2009
  11. physics

    For a liquid, 0.500 cubic meters weighs 4590 N. What is the specific gravity of the liquid?

    asked on September 22, 2009
  12. chemistry

    For a liquid, 0.500 cubic meters weighs 4590 N. What is the specific gravity of the liquid?

    asked on September 22, 2009
  13. chemistry

    How many milliliters of 0.418 M HCl are needed to react with 52.7 g of CaCO3? 2HCl (aq) + CaCO3 (s) >>> CaCl2 (aq) + CO2 (g) + H20 (l) I got .00252 mL but its wrong. This is what I did: 52.7 g x (1 mol CaCO3/100.09 CaCO3) x (2 mol HCl/ 1 mol CaCO3)= 1.05

    asked on September 19, 2009
  14. chemistry

    Potassium permanganate reacts with sulfuric acid as per the equation shown below. Indicate the excess reactant after the reaction of 7.60 g KMnO4 and 10.32 g H2SO4. 4 KMnO4 (aq) + 6H2SO4 (aq) + 2K2SO4 (aq) + 4MnSO4 (aq)+ 6H2) (l) + 5O2 (g) I have no idea

    asked on September 19, 2009
  15. math

    A conical tank sits point down, at ground level, so that the circular top of the tank is parallel to the ground. The tank is 5.0 meters tall, and the top of the tank has a diameter of 3.0 meters. The tank is half full of water. What is the water level

    asked on September 15, 2009
  16. physics

    The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second?

    asked on September 7, 2009
  17. AP Chemistry

    It is found that 24.68 mL of 0.1165 M NaOH is needed to titrate 0.2931 g of an unknown acid to the penolphtalein end point. Calculate the equivilent mass of the acid.

    asked on April 14, 2009
  18. AP Calculus

    Find the antiderivatives. 1) çãx (x+1) dx 2) ç(x^3-4)/ (x^2) dx 3) ç(3sinx) dx 4) ç(5secxtanx) dx 5) ç(1/x) dx 6) ç(e^x - 2x) dx 7) ç(3)/((1-x^2)^1/2) dx I picked the antiderivatives i did not know how to do. Please show me how to

    asked on January 22, 2009
  1. Math

    THANKS SO MUCH 'OOF' FOR THE ANSWER I WOULD'VE NEVER GOT THAT

    posted on June 11, 2020
  2. Math

    0.45 * 40 = 18 0.18x = 18 x = 18 / 0.18 x = 100

    posted on June 9, 2020
  3. ALgebra

    It is 80 grams. 3x=120 x=40 2∙40= 80 grams

    posted on June 4, 2020
  4. Geography

    Your answers were wrong

    posted on May 1, 2020
  5. READING

    Click on my user, I bet you won't understand ANY of what is put up. But go ahead, I bet most people would chicken out. c:

    posted on April 30, 2020
  6. READING

    Jeez. I've seen my LITTLE brother who is 7yo and he has better spelling and grammar than some of you. That's just pretty sad to verify that he does. But yes, the answer is almanac. ₲Ɇ₮ ฿Ɇ₮₮ɆⱤ ₲Ɽ₳₥₥₳Ɽ

    posted on April 30, 2020
  7. History

    Thank you so muck Kayla! This really helped since I have trouble learning religious stuff :/ 100% :D

    posted on February 3, 2020
  8. History

    Allison is correct, tysm!

    posted on February 3, 2020
  9. Science

    Also, CONNEXUS, some of those word answers don't exist in the word bank. Think again.

    posted on January 24, 2020
  10. Science

    Ashley is 100% correct, I just got 100% for using them! Tysm Ashley!

    posted on January 24, 2020
  11. Health and Physical Education 8

    D B B I Got 100%

    posted on February 15, 2018
  12. 2 question

    It's bba

    posted on June 16, 2017
  13. language arts

    its BA BA

    posted on February 7, 2017
  14. algebra 1

    Wait I have one more question that I don't get

    posted on April 28, 2016
  15. algebra 1

    Okay thank you!

    posted on April 28, 2016
  16. 7th grade math Ms. Sue please

    in connections too. are these answers at the top right? really need these to be right!

    posted on March 21, 2013
  17. 5th Grade Word Study

    Dunno.

    posted on March 19, 2010
  18. chemistry

    i got an answer of 3.27 g, i hope that's right

    posted on September 19, 2009
  19. AP Chemistry

    I thought it couldn't just be squared because we have an uneven ratio (2:3)

    posted on April 12, 2009
  20. AP Chemistry

    the question says: the solubility of Li2CO3 is 7.4 x 10^-2 mol/L, find ksp. I also couldn't find it on any of my talbes but it seems like its a doable question

    posted on April 12, 2009
  21. AP Chemistry

    for the ICE chart, does it need to be in moles or molarity?

    posted on March 30, 2009
  22. AP Calculus

    the weird symbols in front are supposed be integral signs but watever. i got number 1 and i have the rest i need someone to check the rest. 2)(1/2x^2)/(-4x) 3)-cosx 4)5secx + c 5)0 6)e^x - x^2 7) 3sinx

    posted on January 22, 2009
  23. AP Chemistry

    i don't know why it wont copy/pate. can u help me in the other chemistry question i posted?

    posted on January 5, 2009
  24. AP Chemistry

    Al(NO3)3•9H2O BaCl2•2H2O CaCO3 CuSO4•5H2O NaCl BaSO4 Ni(NO3)2•6H2O Use the results of the following observations or laboratory tests to explain how each compound in the table may be eliminated or confirmed. The tests are done in sequence from a)

    posted on January 5, 2009
  25. math

    yes. the numbers are exactly the same value.

    posted on January 5, 2009
  26. Chemistry

    what is Rb2SO3? like the compund name?

    posted on July 14, 2008