# Lulu

Most popular questions and responses by Lulu
1. ## History

Which option accurately describes Ferdinand Magellan and his motivation for exploring the world? A.)He was a Portuguese explorer who sailed for Spain; he set out to find a better route to the Spice Islands. B.)He was an Italian explorer who sailed for King

2. ## Math

A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(not even). A. 1/3 B. 1/2 •• C. 1/5 D. 1/4

3. ## Math

a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41••

4. ## geometry and trig

If a cylinder with a 4 inch diameter and a 6 inch height holds 1 pound of oatmeal. How much oatmeal will a cylinder (similar) with a 10 inch diameter hold? Volume of 4 in-----24pi volume of 10 in----137pi I get 91 oz choiced are37,44,74, 192

5. ## CHEM- solution/freezing piont

a solution of sulfur (2.560g) in naphthalene (100g) freezes 0.68K lower the freezing point of pure naphthalene (353.10K). for naphthalene, Kf= 6.8K kg mol. calculatem the molecular formula of the sulfur dissolved in the naphthalene?

6. ## Riddle

how did the hunter get hurt while bending over to study some tracks?

7. ## physics

a lever is 5 m long. The distance from the fulcrum to the weight to be lifted is 1 m. If a 3000 N rock is to be lifted, how much force must be excerted on the lever?

8. ## physics

a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the beam, what is the tension in the right rope?

9. ## Social Studies

1 - How does one person become a citizen? (Select 2) - a person is born in the United States - a person of foreign birth is granted citizenship after living in the U.S. for 5 years - a person of foreign birth successfully completes the naturalization

10. ## CHEMISTRY

calculate the number of moles of solute present in 124.0g of a solution that is 6.45% glucose by mass.

11. ## calculus

an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and bending up the sides. what size should be cut out to create a box with the greatest volume? what is the maximum volume?

12. ## language arts

1. What is the prepositional phrase in the sentence: The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store *** 2. What is the appositive phrase in this sentence: My mother, Rebecca, loves to eat pumpkin pie.

13. ## chemistry

What volume of a 0.550 M solution of potassium hydroxide can be made with 14.3 g of potassium hydroxide? (Ignore significant figures for this problem.)

14. ## chemistry

Make the conversion 8.5 x10^2 cal to Calorie 4.5x10^-1kj to calories

15. ## chemistry

In the red cabbage lab, we just took the cabbage juice and in 5 separate cups mixed it with 5 different liquids, ex: coke, milk, cleaning agent, etc, and matched the color to a ph chart to tell if it was a base or an acid. Simple lab. The question needs a

16. ## Chemistry

A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.0 cm, and a piston is carefully placed on the surface of the compound so that, for all practical purposes, the distance between the

17. ## Math

Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 18. She sent the payment November 8. The IRS sent her a penalty charge of 8% simple interest on the unpaid taxes of \$5,900. Calculate the penalty. (Remember that

18. ## physics

A car starting at x = 49 m accelerates from rest at a constant rate of 8.0 m/s2. (a) How fast is it going after 10 s? (b) How far has it gone (from x = 0) after 10 s? (c) What is its average velocity for the interval 0 t 10 s? NEED HELP!!!

19. ## math

On the blueprints of Adam's office building, the length of his rectangular office space is 5 1/4 inches. If the actual length of Adam's office space is 10 1/2 feet, what is the scale of the blueprint?

20. ## Math

a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 •• C. 1/6 ; 43/150 D. 3/43 ; 1/6

1) Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? 2) What are the coordinates of the reflection of the point (5,1) over the line y = x? 3) The coordinate notation for reflection over the y-axis is -?-. 4) If a translation has a

22. ## Macroeconomics

Suppose that Paulie and Vinny each can produce ice cream or t-shirts. it shows the quantity of each good that Paulie and Vinny each can produce in one hour, respectively, if they devote all of their time and effort into making the good. paulie can make 3

23. ## CHEMISTRY- vant hoff

a 0.100m k2so4 solution has a freezing point of -0.43 degrees. what is the van hoff factors for this solution? kf=1.86degree/m? 0.77 3.0 1.0 2.3 i have used the equation dT=iKfm and get -2.3?

24. ## chemistry

Explain how understanding of the atomic emmission spectrum led to developement of the atomic theory. The emmissions spectrum for each element is unique. You can identify an eleement by its spectrum. The atomic theory states that all atoms of a given

25. ## Social studies

How die a compound interest rate differ from a simple interest rate? Compound interest rates pay more interest over time Compound interest rates are calculated only once a year Compound interest rates ideally lower than simple interest rates•• Compound

26. ## chemistry

2KClO3-2KCl+3O2 If this reaction produced 35.2 g of KCl, how much O2 was produced (in grams)?

27. ## math

A farmer with 2000 meters of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

28. ## chemistry

what chemical changes are responsible for the color changes in the red cabbage lab?

29. ## Urgent Chemistry!!

I have done everything to solve this problem and I can't get the right answer (153.8J/degrees C). Ammonium nitrate, a component of fertilizer, decomposes: NH4NO3(s) > N2O(g) + 2H2) (g) the delta H=-36.0kJ/mol. 7.65g of ammonium nitrate was allowed to

30. ## math

a dog is tied to a leash that is hooked to the outside corner of a barn that measures 12 x 20 feet. the length of the leash is 16 feet. what is the maximum are in which the dog can wander?

31. ## chemistry

Is this balanced properly 2H2O2----> 2H2O +O2 Thank you for the reactions of zinc and acetic acid. REAL QUESTION, if I was to rub all the copper off of a new penny down to the zinc, what would be the appearance of the zinc if I left it in vinegar (acetic

32. ## Chemistry

Explain the chemical changes that occur in the red cabbage lab that changes the color of the cabbage juice. I know it has something to do with the hydrogen ions and maybe something to do with the electrons, but I don't understand what or how to answer this

33. ## math

Suppose you want to build a rectangular sandbox where the width is 5 feet less than the length and the diagonal is 5 feet longer than the length. What are the dimensions of the sandbox?

34. ## W. History

I know what the domino threty is. Question is, What 3 aspects of foreign policy do we see the domino theory reflected? I assume they are talking from 60's to 70's. I don't like to submit w/o an answer, but if someone could help, I'd be extremely

35. ## chemistry

Calculate the energy needed to produce 10 moles of Cl2O7 using this balanced equation. 2Cl +70+ 100kCal==2ClO7 please explain steps if I needed to calculate for 7 moles, how would it change?

36. ## Science

What is anything that has mass and takes up space? 1) Weight 2) Volume 3) Density 4) Matter When you measure the boiling point of mercury, you are investigating a ____. 1) Chemical change 2) Chemical property 3) Physical change 4) Physical property Ab

37. ## Life orientation

How they influence effective communication attitudes and values?

How many molecules of hydrogen are produced if 13.05 g of Zn reacts with excess hydrochloric acid equation Zn plus HCL equals ZnCl2 plus H2?

39. ## chemistry

Ould you please offer me some insight to this, Calculate the hydrogen ion concentration (H+) for the aqueous solution in which (OH-) is1×10-15 mol/L. Is this solution acidic, basic or neutral? Thanks in advance

40. ## Math

There a rectangle fence the area is 635.4 square ft the width is 18ft what is the length of the fence

41. ## math

a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

42. ## Chemistry

One more, confused How can you tell by the periodic chart which ions of metals are most easily reduced or oxidized. A website or video would be fine. I know it is quite involved. thanks again

43. ## chemistry

In a titration, 3.4 g of an acid (HX) requires 21.5 mL of 0.85 M NaOH(aq) for complete reaction. What is the molar mass of the acid? Answer in units of g/mol. im not really sure how to even start... but i calculated the moles of NaOH which i got to be .018

44. ## Math

you draw five card from a standard deck of 52 cards p(heart)=4/5. what type of probability is illustrated and why?? 1) Theroretical ; the result is based on then number of possible outcomes 2) Theroretical; the result is found by repeating an experiment

45. ## CHEMISTRY- vapour pressure

Bromobenzene, C6H5Br, and chlorobenzene, C6H5Cl, form essentially ideal solutions in all proportions. At 100°C, the equilibrium vapour pressure of bromobenzene is 137mmHg and that of chlorobenzene is 285mmHg. Calculate the equilibrium vapour pressure

46. ## Calculus

Find the scalar equation of the plane through the points M(1,2,3) and N(3,2,-1) that is perpendicular to the plane with equation 3x + 2y + 6z +1 = 0. I know that normal of the latter equation is (3,2,6) but now what do I do? Thanks.

47. ## chemistry

Back to the atomic emmission spectrum and the atomic theory. in the 1900s, scientists observed that when a gaseous element, such as hydrogen was subjected to an electric discarge that the atoms emitted electromagnetic radiation. The light emmitted could be

48. ## english grammar

I am very sorry. What does the adverb very modify

49. ## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

51. ## AP 1 Physics

A motorcycle has a constant speed of 25.0 m/s as it passes over the top of a hill whose radius of curvature is 144 m. The mass of the motorcycle and driver is 326 kg. Find the magnitudes of the following. Centripetal force: mv^2/r = 1414.93 N Normal force:

52. ## Geography

The people of Africa vary greatly across the continent. Thousands of different ethnic groups occupy this vast continent. In two or three well-developed paragraphs, suggest two ways in which ethnic groups can differ from one another besides language. Use

53. ## physics

a 5.67g quarter sits on a record player a distance of 5cm from the axis of rotation. if the angular speed of the record player is 33 revolutions per minute, what should the coefficient of friction be to keep it from sliding?

54. ## chemistry

What mass of Na2SO4 is needed to make 8.5L of 4.0M solution? Is the answer 7480 grams?

55. ## Biology

why do certain cells contain more of certain structures than do others

56. ## chemistry

which system is under higher pressure, a column of mercury or a column of water

57. ## math

a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

58. ## Introduction Enngineering

For what reason did the French Academy of Science create the metric system

59. ## math

on my worksheet "books never written" AND i have to do multiplication by 2 digit factor and i need help solving the names of the authors please don't tell me This makes no sense to me. also, you need a middle school worksheet that says MIDDLE SCHOOL MATH

60. ## possessive nouns

Write the noun in this sentence so it shows possession. The bus driver is named Mr. Ed. Would it be? The bus's driver is named Mr. Ed. I personally think the sentence should be rewritten to read, The bus driver's name is Mr. Ed The second sentence is

61. ## Math

I don't know how to do my homework I'm in 4th grade and in Manchester gate in m's snyders class help me ppplllzzzz Its 2016

62. ## Math

How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

63. ## algera

A cash register contains only ten dollar and fifty dollar bills. It contains three times as many ten dollar bills as fifty dollar bills and the total amount of money in the cash register is \$2,080. How many ten dollar bills are in the cash register?

64. ## Chemistry

What is the maximum amount of KCl that can disolve in 500 g of warer? The solubility of KCl is 34g/100 g H2O at 20 degrees C.

65. ## English

White House pets become almost as well known as their owners, what type o verb is become?

67. ## Math

The Treasury Department auctioned \$30 billion in three-month (13-week) bills in denominations of ten thousand dollars at a discount rate of 9.227%

68. ## Physics

A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 36.0 m above the ground. The projectile strikes the ground with a speed of 1.3v0. Find v0. (Ignore any effects due to air resistance.) HELP NEEDED!!!

69. ## CHEMISTRY

the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

70. ## high school

what is an alkali and where do we use them

71. ## Chemistry!!

How do I go about doing this question? How much heat energy is involved when 5.58g of Fe metal reacts with excess oxygen to produce Fe2O3? Do you need the equation, and if so, what would tha be? Fe + O2 > Fe2O3? I don't think that is right though. And

72. ## math

(x/50)+(x/25)+(3x/50)+(2x/25)+...+2x=

73. ## Math

What does 5 yards 2 feet 3 inches plus 2 yards 2 feet 9 inches equal?

74. ## math or chemistry

5.4 x10^-2 by 2.5 x10^-3 by 7.9 x10^-3m volume = 106.65 x10-8m^3 Check pls yesterday you said 106.65 x10^-6. If you add 2+3+3 you get 8 is that right? Just want to make sure I'm doing it right. Thank you. I may have witten it differently.

75. ## nutrition

Created a nutritional care plan for the client. Included an evaluation of nutritional risk, listing of interventions, and expected outcomes. Listed the goals of medical nutrition therapy for the patient and suggested an appropriate diet. Identified whether

76. ## English

Which is the better strategy for reading comprehension?

77. ## algebra/ word problem

Justin paddles his kayak 6 miles upstream in 1,5 hours. he turns around and paddles downstream, the same distance, in only 1 hour. What is the rate in still water and what is the rate of the water's current

78. ## chemistry

You need to prepare 500.00 mL of a 0.15 M solution of nitric acid . Concentrated nitric acid comes from the chemical copmanies as a 15.8 M liquid. How much (in mL) of this 15.8 M solution will you need to dilute to 500.00 mL to get the desired 0.15 M

79. ## english letter

Hello everybody! Today a I have to write a complain letter to "my"boss.I should write about my difficulties,and about what's bothering me. In the letter I should propose a solution as well. The situation is: Me(Julie,47 years old)has worked as a secretary

80. ## Physics

the inclined plane is 30* from the ground a) What is the mechanical advantage of the inclined plane? b) A weight of 100N is to be lifted using the inclined plane. What is the minimum applied force for this job? c) Suppose that an applied force of 200N is

81. ## English

hi ppl does this look like an intresting book review The book that I have recently been reading is called sense and sensibility by Jane Austen. The book is about a family The Dashwoods which live in Sussex, England. On the death of the father, Henry

82. ## physics

a drum holds 90 kg of water or 60 kg of gasoline. determine (a) the relative density of gasoline (b) the density of gasoline (c) the capacity of drum.

83. ## algebra

Could you please help? What are the solutions of the compound inequality? 2x - 2 < - 12 or 2x+3 > 7 Is this one x < - 5 or x> 2 2x -1/3 +3 = 6. This one is 2x-1 divided by 3 plus 3 is less than or equal to - 4 or 8x -2 divided by 2 minus one is greater or

84. ## Chemisry

If you put copper coated penny 1983or newer, in vinegar, it turns blackish green. If you rub the copper off half the penny first and expose the zinc, put the penny in vinegar, will the results change? Thank you.

85. ## Masth

How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

86. ## chemistry

When calling the families on the periodic chart by the top or first name in the column, where hydrogen is a non metal, and in family 13, where boron is a metaloid , is it correct to call those families the hydrogen or lithium family or/ and the boron

87. ## Math

what is the smallest number that 54 can be multiplied by to give a perfect square?

88. ## chemistry

What particle is needed to complete this equation 14/7N+ _______=14/7C+ 1/1H I think it is a beta particle because of beta decay and transmutation. I could be really off because this chapter is really confusing me.

89. ## chemistry

Dr Bob Could you check this please? Voltaic cell---cathode is positive, accepts electrons, reduced, anode is negative, gives up electrons and is oxidized Electrolytic cell------cathode is negative, accepts electrons and is reduced. Anode is positive,

90. ## chemistry

What is the equilibrium constant for 2A + 3B (double arrow) =4C Is it (C)^c/ (A)^a (B)^b

91. ## Math

A student cuts 1/3 of a coil of wire. He then cuts out another piece that was 8 meters long (I assume from the remaining coil). The two pieces of cut off wire are only half the total length of the wire. How long was the coil before the student cut it? I am

92. ## English

Whe Abe Lincoln was president, he had a turkey. what type of pronoun is he?

93. ## POL 201 History

Under the "necessary and proper" clause, Congress may? A. Do as it pleases B. Not do anything unless it has been enumerated C. Do that which is necessary to exercise its enumerated powers D. do that which is necessary even if it violates the basic tenets

94. ## Math

David drew a scale drawing of a table.The real table is 12 feet long.I measured out in inches that the height was 1/2 and the length was 2.But my question is What scale did he use?

95. ## physics

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep in meters is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 6.8 s?

96. ## Math

I'm studying to take a math placement exam and it has been a long time since I've taken a math class. Can someone please give me a step to step solution of these: A.Simplify: 8x/[2^(x-1)] Answer = 2^(2x+1) B.Simplify: (2^x)*[4^(x-1)] Answer = 2^(3x-2)

California has more national parks than many other states. The sum of the two digits in its number of parks is 6. Both digits are even. If California has fewer than 30 national parks, how many does it have?

98. ## Trigonometry

Calculate the area: From a point A, proceed east for 300 m to Point B. Then travel 420 m on a bearing S35°E to point C. Then travel along a bearing of S40°W for 500 m to Point D. Then return to Point A.

99. ## Math 209

Predicting Home Prices Selling prices of homes can depend on several factors such as size and age. The accompanying table shows the selling price for three homes. In this table, price P is given in thousands of dollars, age A in years, and home size S in