Questions Asked on
July 3, 2017

  1. science

    Calculate the number of ions present in 7.45 grams of potassium oxide. ( At.mass of K= 39u).

    asked by elby
  2. Chemistry

    Write the net ionic equation for the precipitation of zinc carbonate from aqueous solution:

    asked by Ashley
  3. Chemistry

    Write the net ionic equation for the precipitation of iron(II) sulfide from aqueous solution:

    asked by Ashlei
  4. Chemistry

    Write the net ionic equation for the precipitation of manganese(II) carbonate from aqueous solution:

    asked by Ashlei
  5. Chemistry

    Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. FILL IN THE BLANKS PLEASE. The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J J cal kJ 695 ___

    asked by Anonymous
  6. maths

    Find the quotient of 4 7 and 3 5 . Give your answer as a fraction in its simplest form.

    asked by Rippin
  7. History

    1: Part one: What are some facts about Plessy v. Ferguson? *I know that Plessy v. Ferguson is an example of judical review where citizens challenged a law through courts.* Part two: What are the case outcomes and significance? *I think its that when the

    asked by Rose
  8. Math

    If m∠FCG = 9x + 3 and m∠GCB = 13x – 9, find m∠GCB

    asked by Anonymous
  9. Biochemistry

    You are asked to make 50 mM Tris-HCl pH 7.5. The pK of Tris is 8.1. What is the concentration of the components (Tris and Tris-H+) in the final buffer solution?

    asked by Alberto
  10. Physics II

    Two long straight parallel wires separated by L2 = 8.16 cm carry currents of equal magnitude but heading in opposite directions. The wires are shown perpendicular to the plane of this page. Point P is L1 = 1.96 cm from wire 1 and the magnetic field at

    asked by Tina
  11. Maths

    The temperature at 6pm of town was 37 degree c at mid night the temperature was 31 degree c if the rise in temperature per hour

    asked by Maths
  12. Science

    10 examples for suspension

    asked by Om
  13. Physics

    The greatest and least resultant of two forces acting at a point are 16N and 4N.if they are acting at an angle 120 with one another their resultant is

    asked by Komathan
  14. Chemistry

    A dime is found to have a mass of 2.33 grams. Using unit analysis, show what the mass of this dime is in kilograms. 2.33 grams x ________ _______ (number) (unit) ________________________________________________ ________ ________ (number) (unit) = ? ___ kg

    asked by Anonymous
  15. Geometry

    To the nearest tenth, find the perimeter of ΔABC with vertices A(2,4), B(-2,1) and C(2,1). Show your work.

    asked by Crystal
  16. English

    My mother feels (bad, badly) about what happened. I think that it is bad.

    asked by Joe
  17. math

    Answer to this questions Please *Question 8* A clock strikes once at 1 o’clock (am or pm), twice at 2 o’clock (am or pm), thrice at 3 o’clock (am or pm) and so on. How many times will it strike in 24 hours? Select one: 1. 78 2. 136 3. 156 4. 196

    asked by Tosin
  18. Chemistry

    How many milliliters of an aqueous solution of 0.138 M potassium nitrate is needed to obtain 19.4 grams of the salt?

    asked by Ashlei
  19. Biochemistry

    You are asked to prepare 2 L of 50 mM sodium phosphate pH 7.0. The pK2 of phosphate is 6.8. What are the amounts of sodium phosphate mono basic monohydrate (NaH2PO4 • 1H2O, MW=137.99 Da) and anhydrous sodium phosphate dibasic (Na2HPO4, MW=141.96 Da) that

    asked by Alberto
  20. Chemistry

    You need to make an aqueous solution of 0.233 M magnesium nitrate for an experiment in lab, using a 125 mL volumetric flask. How much solid magnesium nitrate should you add? (fill in blank) __ grams

    asked by Ashley
  21. Chemistry

    How many meters are there in one picometer?

    asked by Ashlei
  22. Chemistry

    Find active mass of 4gm of H2. Please solve it and explain it.

    asked by ABC
  23. math

    A card is selected from a deck. Find the following probabilities. A standard deck of cards has 52 Cards. There are 13 values and 4 suits. Suits are Spades, Clubs, Diamonds and Hearts. Each suit has 13 cards. There are 3 face cards Jack, Queen, and King. a

    asked by Erica
  24. Physics II

    A defibrillator passes a brief burst of current through the heart to restore normal beating. In one such defibrillator, a 47.0 μF capacitor is charged to 5.91 kV. Paddles are used to make an electrical connection to the patient's chest. A pulse of current

    asked by Tina
  25. Math

    If three teachers can grade 40 tests in 3 hours, how many hours will it take 12 teachers to grade 480 tests?

    asked by Lucy
  26. quantitative apptitude

    a sum required to earn a monthly income of 1200 at 18% per annum then SI?

    asked by lakshmi
  27. intro to algebra

    Hookes law states that the distance that a spring is stretched by hanging object varies directly as the mass of the object. If the distance is 20 cm when the mass is 3kg, what is the distance when the mass is 5 kg?

    asked by Anonymous
  28. Math

    Can any body please explain A dejuicer was able to squeeze 1/5 of a pint of juice from a bag of oranges. This amount of juice filled up 1/8 of a jug. At this rate, how many bags will it take to fill the entire jug?

    asked by kk
  29. morgan

    A Gantt chart is good for planning but not an effective tool for control. . True False

    asked by mo
  30. math

    Kathy went shopping with a certain amount of money. She spent 1/4 of it on shoes, 1/5 of it on lunch and 78 of it on cloths. She had 21 left. How much money did she have at first.

    asked by GJ
  31. chemistry

    How many grams of Al2(SO4)3 can be produced from 10.0g of CuSO4?

    asked by Nicole
  32. bio

    How Does exponential growth affects the 5 scientific principles of sustainability,reliance of solar energy,biodiversity,population control and nutrient recycling

    asked by emmanuel
  33. chemistry

    At a given temperature, for a reversible reaction , if the concentration of reactants is doubled then the equilibrium costant will (a) be doubled (b) be halved (c) change to 1/3 (d) remaine same

    asked by annapurna
  34. physics

    Ball 1 is moving to the right at speed Vo when it collides with ball 2 - is initially at rest. After the collision, ball 1 's initial KE decreases by 80% and has a velocity at an angle of 40 degress below the horizontal. what fraction of the initial KE

    asked by Riley
  35. Math

    What is smallest 3 digit number using 1,0,6,2,9,7, with digits repeated and without digits repeated?

    asked by Gail
  36. Math

    The sum of the numerator and denominator of a fraction is 3 less than twice the denomiator.If the numerator and denomiator are decreased by 1,the numerator becomes half the denominator. Determine the fraction

    asked by Ashish
  37. maths

    A woman is three times as old as her son just in 12years to came the woman will be twice as old as the son how old is the woman now?

    asked by Kemigisa
  38. Chemistry

    Which one of these properties is directly proportional to molality and why? A) Electrical conductance B) Heat of solution C) Equilibrium of solution D) Vapour pressure Thanks

    asked by MAD
  39. geometry

    find the focus of x^2+4y^2+2x+24y++28=0. Thank you

    asked by unowen
  40. History

    How does the Supreme court affect the rights of citizens? *They affect citizens by looking into judical law before correcting political circumstances. Is my answer okay or should I fix it? Can you help me? I'm not 100% sure. Thank you :)

    asked by Rose
  41. kyc

    in a 2 digit number sum of two digit is 7 of the difference of two digit number and number obtained by reversing the degit is 9 find the numbers

    asked by manan
  42. English

    1. Let's get out of here. 2. Let's go out of here. ------------------------------- Do you use only #1? What about #2? Why is #1 used frequently?

    asked by rfvv
  43. Math

    Which is the largest 6 digit odd number without the repitition of the digits

    asked by An
  44. Anonymous

    what is 8 divided by 100

    asked by Anonymous
  45. Responsibilities

    what are the responsibility of keep us safe and perfected from any harm and danger

    asked by Charvie
  46. math

    i am a 3 digit number. my ones is one more than my tens. my tens digit is 0. my hundreds is 4 more than my ones. what number am i?

    asked by josh