1. Science(Chemistry)

HCL+Al=AlCl3+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

2. math 213

The amount of money in cents in a jar containing some nickels and d dimes and some quarters if there are 4 times as many nickels as dimes and twice as many quarters as nickels

3. MATH

You wish to mentally estimate the total cost of items that have the following prices: \$1.85, \$.98, \$3.49, \$9.78, and \$6.18. Rounding off the items to the nearest half-dollar, your estimate of the total cost of these items is A. \$22.50. B. \$22.30. C.

4. Chem

Consider the reduction of 4-t-butylcyclohexanone. If the procedure calls for 153 mg of 4-t-butylcyclohexanone, what mass of sodium borohydride should be added?

5. math

In the following, write an expression in terms of the given variables that represents the indicated quantity: a. The cost of having a plumber spend h hr at your house if the plumber charges \$30 for coming to the house and \$x per hour for labor b. The

6. math

The amount of bacteria after n min if the initial amount of bacteria is q and the amount of bacteria triples every 30 sec. (Hint: The answer should contain q as well as n.)

7. Chemistry

Assume your sample spots are 1 cm above the bottom of the TLC plate. What happens if you put the plate in a developing chamber that has 1.2 cm of developing solvent? A. The solvent will move up the plate by capillary action faster. B. The sample spots will

8. psychology

1)As a volunteer subject in a sleep research lab, Conrad is routinely awakened each time he shows physiological signs of entering REM sleep. As a result, we would not be surprised to discover that, during Session 19, when Conrad is left undisturbed all

9. English

What is the sentence pattern for: The waterfall rushed down the steep hillside. options: s-v-io-do s-lv-pa e-v-s s-lv-pn s-v-do s-v-do-oc quest pattern s-v

10. Chemistry

What is the mass/ vol% ethanol in an ethanol water solution with density of 0.875g/ml and containing 65% ethanol by volume? The density of pure ethanol is 0.789g/ml? My calculation 0.875g/ml x 1000ml x 0.65/ 46.06 = 12.34m 12.34/0.789g = 15.6g I am not

11. math

joanne picked 15 more than twice as many apples as her sister. Her sister picked 35 apples.

12. Chemistry

Consider the reduction of 4-t-butylcyclohexanone. If the procedure calls for 153 mg of 4-t-butylcyclohexanone, what mass of sodium borohydride should be added?

Word Problem 11-17 Hafers, an electrical supply company, sold \$3,100 of equipment to Jim Coates Wiring, Inc. Coates signed a promissory note May 12 with 5.50% interest. The due date was August 22. Short of funds, Hafers contacted Charter One Bank on July

14. Physics

The drag coefficient = 0.354 The mass of car = 1200 kg rolling resistance = 180 N Air density = 1.181 kg m^-3 Frontal area = 1.88 m^2 What is the deceleration at a speed of 82 km h^-1 when the car is taken up to high speed and then allowed to coast down on

15. math

The quotient of 5/31 divided by 15/23, reduced to the lowest fraction, is A. 23/93. B. 93/23 or 4 1/23. C. 75/373. D. 115/465. Is it b?

16. college physics

a delivery truck is 5 km away from a car. the two started at the same time and headed at the same direction. the delivery truck accelerates at 3m/s. if the car should overtake the truck in ten minutes, what should be the acceleration of the car?

17. math

Rewrite the following using mathematical symbols: a. Q is equal to the set whose elements are a, b, and c. b. The set containing 1 and 3 only is a proper subset of the set of natural numbers. c. The set containing 1 and 3 only is not a subset of {1,4,6,7}

18. math

consider the following statement: if a circle with its center at the origin has a chord with slope m, the equation of the right bisector of the chord is y=mx. Is this statement true or false? explain

Ron Prentice bought goods from Shelly Katz. On May 26, Shelly gave Ron a time extension on his bill by accepting a \$3,500, 8.80%, 150-day note. On August 31, Shelly discounted the note at Roseville Bank at 9.80%. (Use Days in a year table.) What proceeds

20. math

The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,7),(5,26)}

21. Science

When you are focusing an object under the microscope, explain why some parts are in focus and some part are out of focus?

22. math

what is the gross profit percent on a item bought for 3.50 at wholesale price and then sold at 5.00 for retail price

23. Geography

How has the location of South Asia both prevented invaders and invited the influence of other cultures?

24. Physics

In a fairground ride a child of mass 37 kg stands against the inside surface of a circular cylinder of radius 3.9m that rotates around its vertical axis of symmetry. The cylinder has an angular speed of 1.3 rad/s and an angular acceleration of 0.12 rad

25. algebra

A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?

26. math

The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,17),(5,26)}

27. math

Tell whether each of the following is true for all sets A, B, or C. If false, give a counterexample. c. A¿(BUC) = (A¿B) UC d. (A-B)¿A=A e. A-(B¿C) = (A-B) ¿ (A-C)

28. psychology

1)As a volunteer subject in a sleep research lab, Conrad is routinely awakened each time he shows physiological signs of entering REM sleep. As a result, we would not be surprised to discover that, during Session 19, when Conrad is left undisturbed all

29. Math: Story Problem

A buffet-style restaurant has 18 tables that seat 23 people each. A church group of 401 has rented the restaurant for a banquet. If the pastor of another church, his wife, and their nine children come as invited guests, what is the least number of people

30. math

A speedboat moves at a rate of 21 km/hr in still water. How long will it take someone to ride the boat 60 km downstream if the river's current moves at a rate of 9 km/hr?

31. English III Proofread and tips (:

Hello! Could someone proofread this summary for me and give me some tips? Thanks so much! In Daniel Smith’s article, The Anxious Idiot, he discusses anxiety issues. He begins the article with an introduction to his anxiety disorder and proceeds to tell

32. college algebra

graph the function and state the vertex axis of symmetry, the intercepts, if any: f(x)=x^2-8x+15 Please show work so i can understand this. thank you

33. logic

A recent study of 100 employees from six departments of a major corporation found 65% to be sleep deprived. The researchers concluded that the majority of corporate employees are sleep deprived. The researcher’s conclusion is suspect because it

34. Science(Chemistry)

Mg+H2O=MgOH+H2 What is the ionic equation,the spectator ions and the overall or net ionic equations?

35. math

If two sets are subsets of each other, what other relationships must they have?

36. math

the radius of a spherical tank 0.7 meter. how many liters of water can the tank hold?

37. english

Why do you think credibility is important when you are building a persuasive case?

38. math 213

The following sets of ordered pairs are functions. Give a rule that could describe each function. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,7),(5,26)}

39. Science(Chemistry)

Explain what would happen when bromine water is added to potassium iodide solution and what is its balanced chemical equation?

40. English 11

When writing an article summary i have to say if i agree with, disagree with, or qualify the main points, what does qualifying the main points mean?

41. chemistry

A CUBIC PIECE OF METER MEASURES 3.00CM ON EACH EDGE. IF THE METAL IS NICKLE WHOSE DENSITY IS 8.90G/CM^3.WHAT IS THE MASS OF CUBE

42. economic

A socialist believes that wealth should be spread evenly throughout society. What characteristic of socialism is designed to achieve this goal? A. The government controls the centers of economic power. B. Central planners make all decisions about the

43. math

If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?

44. Intro to Social Work

Your role is as a social worker for a group of low-income tenants of an apartment building who have no heat in their building. The landlord is attempting to raise the rent but the tenants cannot afford the increase. You have brought the parties together

45. math

every math class at super fun time high school has 31 students and every science class has 18 students. the school offers 4 more math class than sciencs. if the school has 418 students, how many of each class does the school offer.

46. Art

Hello, can somebody please send me a link to a website that explains how african masks grew.. (first came about) I cannot find a website that explains how the masks were first made, etc.

47. physics

Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate.

48. math

The following sets of ordered pairs are functions. Give a rule that could describe each function. Please show your work. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,17),(5,26)}

49. math

determine the equation of each line: a) slope 3.4 passing through point (-2, -4) b) slope -5 and y-intercept -0.7

50. epidemiology

In a fictitious study, 100 out of 1000 people aged 60 years and over were positive in detecting breast cancer using Tumour Biopsy (gold standard). Using mammography, 90 of breast cancer patients and 135 healthy persons were also positive by this test. (I)

51. aig math

the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer. my answer is 72.6, am i right if not please tell me why and how.

52. English

I need a copy of Level 6 Shurley English capitalization and punctuation Rules. Plz help!

53. Algebra 2

Solve each inequality. 0.75b < 3

54. Geometry

If a circle with center O has equilateral triangle AOB inscribed with sides 10 inches long. If OC is perpendicular to AB at P, what is the length of AP in inches?

55. Spanish help

This is a written assignment. Will someone please help check whether it is grammatically correct. Instructions: Think of where you live in relation to the nearest airport. Write down directions on how to arrive at the airport from your house, using the

56. chemistry

Determine the final temperature when 10g of steam at 100C mixes with 500g of water at 25C. I have 4.184x 10(100-x) + 40700 x 10= 500 x (x-25) x 4.18. The book has 10/18 instead of 10 on left hand side of equation. Why??

57. algebra

find the following for the function f(x)= (x+5)^2(x-1)^2 a) find the x and y intercepts for the polynomial function f b) determine whether the graph of f crosses or touches the x axis at each x intercept C) put all information together to obtain the graph

58. math

my average results from the last 4 maths exams was 18 out of 25.what mark do i need in my fifth exam in order to increase the everage by 3%

59. math

if (asquare-bsquare)sintheta=2abcostheta=asquare+bsquare then prove that tantheta=asquare-bsquare/2ab

60. math

the end points of a line segment are A (-7, -1) and B (5,5) determine the equation of right bisector of AB show that the origin 0,0 lies on the right bisector of AB

61. algebra 2

I am stuck this is how far I have gotten x^2+6x=-1 (b/2)^2=(6/2)^2 =

62. ACT

How many real ACT prep guide are there?

63. math

trying to solve fraction problem 2/3+3m/5=31/15 been too long....

64. Math

The amount \$180.00 is what percent greater than \$135.00? A. 35% B. 75% C. 133.33% D. 33.33% Is it b?

65. Maths

A drinking straw of length 21cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3 cm shorter than the first piece the third is twice as long as the first piece state term of x to represent the sum of of the length {2} write

66. Spanish writing

Could you please check the grammar of my writing assignment. Thank you very much! Discuss your opinions and ideas about three different popular political issues. Include how you think things should be and what you wish certain people would do about it.

67. College algebra

graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1 ----- -4 x^2 please show work!

68. math 213

Tell whether each of the following is true for all sets A, B If false, give a counterexample. A

69. math 213

Tell whether each of the following is true for all sets A, B If false, give a counterexample. a. A-B= A-0 (with slashed O) b. AUB (with line over AUB) = AUB (with line over A and a line over B)

70. math

sven is thinking of two numbers. the sum is 12. the diffrence is 4. what are the two numbers?

71. math

a number of teachers were to receive 6 pens each ,but needed 4 more pens for them to be equally divided.if each teacher received 9 pens, 25 more pens would be necessary.how many pens are there

72. math

sue has some ducks and some goats,if there are 36 legs altogether,what is the greatest number of goats possible

73. college physics

a delivery truck is 5 km away from a car. the two started at the same time and headed at the same direction. the delivery truck accelerates at 3m/s. if the car should overtake the truck in ten minutes, what should be the acceleration of the car?

74. math

john and tom race around a circular track,divided like the face of a clock,into 12 sections.if john gives tom 4 sections start in advance and runs half as fast as tom.at what point on the track will he overtake tom

75. math

If a person made .89 each and every week for 7 years. How much would he have made?

76. math

there are 4 packets of muesli sold for every 3 packets of bran.The owner sold 84 packets of muesli and bran today.how many packets of muesli did the store sell today

77. algebra2

can you help me to solve for completing the squar x^2+18x=-4

78. algebra 2

could you help me with completing the table for x^2-25=0,x^250 I am haing trouble with this

hypothesis

80. math

Erica's average rate going uphill was 80% of her average rate going downhill over the same route, and it took Erica 10 minutes longer to go up the hill than to go down the hill. What was the total number of minutes Erica spent going uphill and downhill?

81. chem

do this using the appropriate number of sig figs 320.44 − (3104.1/2.6) i got -880 as my answer and it said to check my sig figs. I thought it was all the numbers up to the ones place

82. statistics

Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?

83. English 11

How can you countenance even one state outlawing a fundamental right? Indeed, half a century ago, states’ rights was the cry of those committed to continued segregation and discrimination. is that a example of metaphorical language?

84. English 11

Is the following an example of metaphorical language? if marriage equality is a civil right, then denying it on the basis of (innately felt) sexual orientation is, like discrimination on the basis of skin color, simple bigotry.

85. Chemistry

Why do you spot multiple times? Select one or more correct answers. A. To fill the capillary almost instantly by capillary action. B. So the developing chamber solvent does not evaporate. C. The higher compound concentration facilitates visualization. D.

86. English 11

when discussing the organization of an article what are somethings you can say to explain that it flowed together nicely?

87. Child Development

According to contempory theorists an understanding of the effects of ones behaviors on others develops as a childs

88. math

if joise drives 55 miles per hour how many hours will it take her to travel 350 miles

89. English III proofread and tips

Hi its me again! Is it ok to ask for ya'll to proofread these summaries I'm submitting? If not, I'll stop but here's another one I've finished. New York Times Putting Our Brains on Hold August 6, 2010 By: Bob Herbert In his essay, Putting Our Brains on

90. Spanish writing

Spanish writing - SraJMcGin, Saturday, August 18, 2012 at 8:49pm Just because the directions say to use the Subjunctive, it does NOT mean to use it everywhere! Your first statement is FACT and therefor there is no Subjunctive! hay muchas, etc. The 2nd

91. math

ABC is a isosceles triangle. Line B extended to D. Prove that

92. English

My teacher says to discuss the style of an article we've chosen by noticing diction, tone, metaphorical language, organization, us of anecdote. Could someone give me an example of those 5 things? I'm a bit confused.

93. chemistry

In TLC, why do you spot multiple times? Select one or more correct answers. A. To fill the capillary almost instantly by capillary action. B. So the developing chamber solvent does not evaporate. C. The higher compound concentration facilitates

94. calculus

find the definite integral that is equivalent to lim n->infinity of sum over i=(1,n) n/(n^2+i^2) since definite integral of f(x) dx over (a,b) = lim n->infinity sum over i=(1,n) f(a + (b-a)i/n) * (b-a)/n then: f(a + (b-a)i/n) * (b-a)/n = n/(n^2+i^2)

95. math 213

Does the diagram define a function from A to B? Why or why not? A B Al Mary Abe Hall Sue Bob Jesse hall Liz arrow from Al to Abe arrow from Mary to Jesse arrow from sue to jesse arrow bob to Abe arrow from Liz to Jesse