# Rachael

Popular questions and responses by Rachael

In the reaction between bromine and sodium, a bromine atom gains an electron. What ion is formed? Is the bromine oxidized, or is it reduced? Thank You ^_^

2. ## Social studies

Infer which "great victory" the author references in the excerpt? election of the first female governor success of the first women's labor strike*** passage of the Equal Rights Amendment passage of the 19th Amendment *** = my answer Am i right?

3. ## Chemistry

HCl(aq) + LiOH(aq)--> H2O(l) + LiCl(aq) Did I do this right? I need help on finding the net ionic equation

4. ## Chemistry

Phthalic acid, H2C8H404, is a diprotic acid used in the synthesis of phenolphthalein indicator. Ka1= 1.2x 10^-3, and Ka2 = 3.9 x 10^-6. a) Calculate the hydronium-ion concentration of a .015 M solution. b) What is the concentration of the C8H4O4^-2 ion in

5. ## Science

A slab of granite has a mass of 1400.0 grams. The specific heat of granite is 0.040 J/gC. How much heat must be absorbed to raise the granite slab's temperature by 75 degrees C? 11.8 kJ 80.5 kJ 88.2 kJ 19.5 kJ I've tried solving this several times and I

6. ## Math

Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probabilit of

7. ## math

Four key marketing decision variables are price (P), advertising (A), transportation (T), and product quality (Q), Consumer demand (D) is influenced by these variables. The simpiest model for decribing demand in terms of these variables is: D = k - pP + aA

8. ## physics

"A cab driver picks up a customer and delivers her 3.31 km away, driving a straight route. The driver accelerates to the speed limit and, upon reaching it, begins to decelerate immediately. The magnitude of the deceleration is 4.70 times the magnitude of

9. ## Physics

Two young sisters with a combined mass of 75 kg ride on a cart of mass 30.0kg travelling at 2.0 m/s. If they jump off together so they land with zero speed relative to the ground, what is the change in speed of the cart?

10. ## Chemistry

The question is: Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced? Is this right for the balanced

11. ## Math

Meat patties are sold in packages of 12. Buns are sold in packages of 8. What is the least number of meat patties and buns needed to have an equal amount of each?

12. ## math

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace =1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of

13. ## chemistry

concentrated sulfuric acid is typically 18.1 M H2 SO4. Calculate the volume in mL of concentrated sulfuric acid needed to prepare 125 mL of a 0.100 M H2SO 4 solution

14. ## chemistry

A student measures the mass of a book as 12,321g. What is the book's mass in kg?

15. ## Chemistry

Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius, respectively, and considering the information about water given in exercise 16, calculate the total quantity of heat evolved when 10.0g of steam at 200. degrees celsius

16. ## Physics

What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 2.86 plus or minus .09 m? I know I need to use the formula (4/3)*pi*r3 somewhere in this problem because of the details given, but I'm totally confused.

17. ## math

The surface area and the volume of a sphere are both 3 digit integers times π. If r is the radius of the sphere, how many integral values can be found for r?

18. ## Chemistry

Identify the acid or base behavior of each substance in this reaction: H2PO4 + H2O H3O+ + HPO4-

19. ## chemistry

Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.180 M pyridine, C5H5N(aq) with 0.180 M HBr(aq): 1)before addition of any HBr 2)after addition of 12.5 ml of HBr: 3)after addition of 16 ml of HBr: 4)after addition of 25 ml

20. ## math

A researcher was interested in the emotional effects of music on exam performance. Before their exam, a professor took one group of students into a room in which calming music was played. A different group of students were taken to another room in which

21. ## Chemistry

Standardization of iodine solution was prepared using 10.0 mL of a standard, 1.00 mg/mL, ascorbic acid solution. Titration with the iodine solution required 35.80 mL to reach the end point. What is the molarity of the iodine solution?

22. ## AP Calculus

Two ships sail from the same port. The first ship leaves port at 1:00a, and travels eastward at a rate of 15 knots. the second ship leave port at 2:00am and travels northward at a rate of 10 knots. Determine the rate at which the ships are separating at

23. ## Chemistry

The question is: Isotonic saline is a 0.9% (g/100ml) solution of salty water. You are asked to make up 2L of isotonic saline. How much salt should you weigh out? I got the answer of 18g with the following working: 9 ÷ 1000(ml) x 100 = 0.9 Therefore 9% of

24. ## Investigation

Conduction, convection, or radiation? The heat you feel from a fireplace

25. ## Physics

A stunt pilot is attempting to drop a water balloon from a moving airplane onto a target on the ground. The plane moves at a speed of 82.8 m/s and a 49° above the horizontal when the balloon is released. At the point of release, the plane is at an

26. ## math

The height, in feet, of a free-falling object t seconds after being dropped from an initial height s can be found using the function h = -16t2 + s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object to land

27. ## Social Studies

What is the name of the mixture of sand, lime, and water used as lubricant to help move stones?

28. ## Chemistry

"Solid dinitrogen pentoxide is added to water." I got this as my answer: N2O5 + H20 -> 2HNO3. Do I need to break 2HNO3 apart since it's a strong acid? I thought it wouldn't since I thought it was a synthesis problem. I read online that this was the answer

29. ## Maths

Joy receives a normal hourly wage of \$18.60 and time-and-a-half for any overtime. On public holidays he receives double time with a minimum of 4 hours paid. What is his wage for a week in which he works 40 normal hours, 6.5 hours overtime and 3 hours on a

30. ## economics

1. Pick a business that you are familiar with and list three (3) fixed and (3) variable inputs associated with that business. 2. What are some things that you think that business could do to reduce their costs? Why?

31. ## Financial Management

I need to fill in the blanks on my income statement/balance sheet. Here is the information given: The following data pertain to Pavilion Products Inc. (PPI): PPI has outstanding debt in the form of accounts payable, 6-month notes payable, and long-term

32. ## physics

A block is released on an inclined plane from a height of 1m. There is friction (static and kinetic =.4) and the mass of the block is 5 kg, the mass of the pulley is 1 kg and it has a radius of 5 cm. The slope of the incline is 30 degrees. Find the

33. ## 6th grade math HELP

You have a triangle that measures 180 degrees. AB is 4 units. the measure of BC is 5 units. The measure of CD is 12 units. What is the measure of DE and how did you get that answer?

34. ## Mathematics

An old table in a furniture store is marked down by 10% from its previous price on five separate occasions. What is the total percentage reduction in price correct to two decimal places

35. ## Stats

A class of 85 students writing an exam had a mean mark of 74.2 write down the total sum of the 85 grades.

36. ## Physics

A football is punted up into the air and it lands 5 seconds later. How high did the did the football reach it's highest point and when does it reach this height?

37. ## Maths

Thomas received \$2176.10 as a holiday loading payment (17.5% on 4 weeks pay). What is his weekly wage?

38. ## College Geometry

A circular grassy region with a 12 ft diameter has a 2ft by 3ft reflecting pool in its center. What is the Surface Area of the reflecting pool? What is the Area if the grass?

39. ## trig

solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)

40. ## BIOLGY

1.Penut butter ,chiken and eggs are high in what nutrient? 2.What nutrient is used to build muscle and energy? 3.Olive oil is high in whaY KIND OF FAT? 4.WHAT ARE TWO FOODS THAT HAVE GLYCEMIC INDEX AND WHAT FOODS ARE LOW IN IT? What is protein, protein,

41. ## Chemistry

The Ka value for ethanoic acid is 1.8x10^-5, what would be the pH of a 2.0x10^-2 M solution of ethanoic acid?

42. ## algebra

Is the relation y> the absolute value of x+3 a function? Why?

43. ## History

Hi, my history task for this weekend is to write an essay on this topic: "Women in World War II: An important step in the women's lieration or another opportunity for exploition" -Could you give me any insight,tips,information or starters to make this

44. ## algebra II

which of the following relationships is a function a.Domain Range B.y^2=x^2-3x+4 3 2 4 1 7 c.Domain Range C.y^2=2x^2 13 0 2 4 -1

45. ## Ethics

what measurements do sociologists utilize to calculate prejudice

46. ## Math

What are the 3 numbers that com after trillion. I'm talk about this- Ex: million then billion. I want to know what comes after trillion 3 times.

47. ## Math

Find three pairs of numbers for which the least common multiple equals the product of the two numbers

48. ## Math

Suppose that the service rate to a waiting line system is 10 customers per hour (exponentially distributed). Analyze how the average waiting time is expected to change as the arrival rate varies from two to ten customers per hour (exponentially

49. ## math

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of

50. ## math

A helicopter is 400 miles directly north of Ghana and is flying at 20 miles per hour. A second helicopter is 300 miles east of Ghana and is flying west at 15 mph. What is the rate of change of the distance between the helicopters?

51. ## alegebra

a stone is thrown into a cylindrical water tank 2 feet in diameter, causing it to rise 1.5 inches. what is the volume of the stone?

The following data pertain to Pavilion Products Inc. (PPI): PPI has outstanding debt in the form of accounts payable, 6-month notes payable, and long-term bonds. The notes carry a 10% interest rate and the bonds carry an 8.5% rate. Both the notes and bonds

53. ## Calculus

If F(x)=x^3−7x+5, use the limit definition of the derivative to find FŒ(5), then find an equation of the tangent line to the curve y=x^3−7x+5 at the point (5, 95). FŒ(5)= The equation of the tangent line is y = x + . Check your answer for

54. ## chemistry

How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?

55. ## algebra

what is a simplified expression for the perimeter of the given rectangle? length=2L-5 width=L

56. ## history/early exploration

what is another name for the mississippi river? all i know is that is "the fater of ______" something! PPLLLLEEASSSSSEE HELP

57. ## Government

What are basic features of the American concept of Democracy?

58. ## math

If Jenny built a triangle out of soup cans and there are 4 at the top row she added 2 cans to every next row so there are 8 cans in the second row. How many cans are in the 12th row?

59. ## maths

Given the the instantaneous voltage across a capacitor is VC=40(1-e -t/CR) Volts When being charged by a 40 volt DC supply, find the time, t for VC to reach 18 volts after the charging process has started if C = 100ìF and R = 20kÙ

60. ## Math

Two cats are taking a walk. 1 cat runs off. three cats come back. 1 cat sits down. How many cats in all are there if 6 more cats came back with one of the cats being the one that ran off?

61. ## French

Good Afternoon, Could you please see if i have translated this english to french correctly? Most squirrels are active during the day, beginning at dawn, often resting midday, and active again until dusk. Squirrels are most active during the fall,

62. ## Managerial Economics

Why the cost structure associated with many kinds of information goods and services might imply a market supplied by a small number of large firms.

63. ## chemistry

How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?

64. ## Chemistry

The Ka value for ethanoic acid is 1.8x10^-5, what would be the pH of a 2.0x10^-2 M solution of ethanoic acid?

65. ## math

Suppose that the multiplication and division keys on your calculator were broken. Explain how you can calculate 452 x14 by using other keys on the calculator.

66. ## Social Studies.

where can i find information to answer these questions How do you think an average American’s perceptions of Muslim and Arab groups are created and what people think are the common United States-centric viewpoints on Muslim and Arab American and

67. ## Physics

a missile is launched off a jet fighter travelling 300 meters per second. it accelerated with a constant acceleration of 100 meters per second. when it has traveled 5000 meters what will its velocity be?

68. ## algebra 1

N decreased by 12 is greater than or equal to 11?

69. ## algebra

How do i compute the track of two circles one with a diameter of 100 feet, the other with a diameter of 200 feet? The question asks me to compute the length of the track with these two circles touching each other at a single point.

What is an appositive?

The measure of AB is 4 units, the measure of BC is 5 units and the measure of CD is 12 units. Find the measure of DE?

72. ## chemistry

The Burning MG in CO2 reaaction had deltaG=-746 kJ/mol at 298K. Calculate the equilibrium constant for this reaction.

73. ## spanish

How do i say i don't like history?

74. ## Art history

what are the major connections between the ashcan schools ethics and todays documentary photogrphers such as nan godin and corrine day?

75. ## english

I would like for someone to look over my assignment for accuracy. Thanks Rewrite the following sentences, focusing on the grammar area specified in the left column. If the sentence is already correct, write No Change. Punctuating Sentences The goose bit

76. ## everest

What number is 45% of 680

77. ## algebra 1

N decreased by 12 is greater than or equal to 11?

78. ## Chemistry

Show that the pH of a solution is -0.301 when its hydronium-ion concentration equals 2 M. Is the solution acidic or basic?

79. ## mathematics

given the mirror formula 1/f=1/v-1/u,f is the focal length of the lens u and v are object and image distance respectively .find f when u and v are 7.5cm and 3.5cm respectively

80. ## math

If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a -chart.

81. ## math

In developing a multiple linear regression model in excel. How do I find the x and Y inputs. How do I find a 95% confidence interval for the mean market value for houses that are 30 years old and have 1,800 sq ft, and 95% prediction interval for a house

82. ## Social Studies

Who were the first Native American groups to settle in Ottawa, Illinois? Where did they come from? What kind of people were they?

83. ## Math

What is the L.C.M. of 9 and 27? Also the G.C.F. of 9 and 27?

84. ## English

Can you help me edit this thesis statement? During the postmodern literary period C.S. Lewis illumines his newfound religious faith during war in the religious allegorical fantasy "The Lion, the Witch and the Wardrobe>."

85. ## UOP RES 342

Use the numerical data from one of the data sets provided. · Develop one business research question from which you will formulate a research hypothesis that will test two or more populations. · Prepare a 250 word paper describing the results of a

86. ## yr8 geography

my homework assignment is to colour the tributary of the river tees but i am struggling. i don`t know where to colour. please help

87. ## calculus

find the x-values at which f is not continuous. which of the discontinuities are removable? f(x)=1/(x^2+1)

88. ## math

If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a p-chart.

89. ## english

What are the adjectives in each of the following: 1. A quarter will not buy very much. 2. Do you need any food for the party?

90. ## algebra 3

identify the greatest common factor then factor expression x^2+9x+47

91. ## science

which chromosome is breast cancer located on?

1. ## English

posted on October 14, 2019
2. ## Math 2

15

posted on September 23, 2019
3. ## spanish

1. jugador 2. bucear 3. equipo 4. ciclismo 5. pasear 6. tenis

posted on April 2, 2019
4. ## Science

Hurricanes become more powerful by sucking up heat energy from the warm water, and this creates moisture in the air.

posted on March 13, 2019
5. ## science

For collar impulse I would say light into heat into kinetic into electrical

posted on October 1, 2018
6. ## LA

its b

posted on November 18, 2017
7. ## physics

number 4 is wrong

posted on October 3, 2017
8. ## riddle

it's NEWS coz once you hear it it was new but it has became old.. Soo if you hear in the next 30 seconds it will be old already... So it's new and old at the same time

posted on March 3, 2017
9. ## SS

i need help plz help me before i get held back

posted on December 13, 2016