Posts by Abbey

Total # Posts: 179

1. Chem

The vapor pressure of liquid chloroform, CHCl3, is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C. What is ?Hvap (in the unit of kJ) of chloroform?
2. ASCA

Thank you Ms Sue
3. ASCA

their LCM is 150 is that right?
4. ASCA

Justin and Mike are learning to how to ski. Justin falls down every 30 feet. Mike falls down every 25 feet. if they start skiing from the same point , how far is the first point where they will both fall down?
5. American Government

D 2 A 3 D 4 B 5 C 6 A 7 D 8 B 9 A 10 D 11 B 12 C 13 C 14 C 15 B 16 D
6. Social Studies Help ASAP Please!

im pretty sure its D
7. science

what do you think should be the motion of an airplane preparing for take off?
8. science

how will you describe the speed of the plane from the rest until it takes off?
9. Math

John's weight loss for each week of the month is 4 pounds 3.5 pounds and 2 pounds he gained 4.5 pounds the last week if John originally weighed 153 pounds how much does he weigh now
10. Physics

** Answer is 1200J, but I keep getting 1176J.
11. Physics

How much work is required to lift a bag of wheat (mass 50kg) to a height of 2.4m?
12. Algebra

Does the data in the table represent a direction variation or an inverse variation, write an equation x 1 2 5 10 y 40 20 8 4 My answer is a direct variation, y=40x, is this correct? here are the other answers direct variation 7=1/40x inverse variat xy=40 inverse xy=1/40
13. Physics

How? I don't have mass or time, and I supposed to use 2.91×10^5 kg/s? The problem also does not mention a liquid or anything so how do I know what c to use??
14. Physics

A steam-electric power plant delivers 900 MW of electric power. The surplus heat is exhausted into a river with a flow of 2.91×105 kg/s, causing a change in temperature of 1.07 oC. A. What is the efficiency of the power plant? B. What is the rate of the thermal source? ...
15. Math

The sides of two similar trapezoids are in a ratio of 1:3. The area of the smaller trapezoid is 12 inches squared. Find the area of the larger trapezoid

yep

18. Math

I tried uploading the graph Graph with x axis labeled years. Y axis labeled revenue in dollars. The line for printed ad revenue starts at 0, 3 and goes through the10, 2. The line for online ad revenue starts at 0, 0 zero and goes through the 10, 3.
19. Math

2.A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing executive states that the revenues for online ads have more than doubled that of the revenues for printed ads since starting the online version of ...
20. Trigonometry

a 5m ladder is leaning against a wall with it's top reaching a height of 4.5m. what angle does the ladder make with the wall
21. Math

Could you maybe explain how you got that.
22. Math

Could anyone try to explain it how they did this
23. Math

find the slope of (3,4) (6, -2)
24. Math

Emily receives her paycheck. She spends 1/6 on food. She spends 3/5 of remaining amount on house payment. She spends 1/3 of what is left on her other bills. She spends 1/4 of the remaining money for entertainment. This activity leaves her with \$150. What was her original take ...
25. Math

I need help on my math the question is make up a set of at least 12 numbers that have the following landmarks with maximum:8 range:6 mode:6 median:5 can you help me solve this equation
26. Math

Thank u! I'm not very good at long division, can u help me do it step by step ?
27. Math

Yay! Than what do I do ms.sue?
28. Math

Question: over the last year, stormy and her 2 sisters saved money for their family trip this summer. They are now getting right to know how much they can spend on each of the 15 days of their trip. If they saved a total of \$420, what is the total amount all three girls can ...
29. Math

Q. Coles sleeping bag has four sides. The side with the zipper is parallel to the opposite side. None of the angles where the sides meet are right angles. The side opposite the zipper is shorter than the side with the zipper. The other two sides are the same length. What shape...

Thank you!
31. Math

Q. Tim and Jorge hope they will be assigned to the same cabin at the summer camp. Each cabin has 8 beds in it. And Tim knows that he is saying in the green cabin not the red cabin. If there are 14 boys going to camp in addition to Tim and Jorge. What is the change that Tim and...
32. history

im working on persuasive essays, the question is asking me to write a response showing where his essay proves to be more persuasive. Could i get some help on which points were more persuasive than others? i didn't think his speech was meant to be persuasive.
33. Statistics

Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the interval from 0 to 2a (...
34. child care

an appropriate sensory motor for a child up to eight month of age is A. touching toys of a different shapes, sizes and texture B. playing with puzzles with a few large pieces C. drawing with crayons or markers D. stringing large bead on a shoelace
35. child care

children who attend a program that has some theoretical basis for planning have A. more material to play than those that have no theory B. more positive experience C. less marked developmental gain D. less positive experience
36. child day care

large scale entry doors shouldn't be used at child care facilities because they A. appeal to adult B. are inviting to small children C. can make children feel small and less welcome D. create a welcoming environment for children and staff
37. child day care

my budget allows me to buy only one software for my children ages 5-8. which one of the following packages would be best for this age group A. ages7-9 B. ages 6-9 C. ages 4-7 or ages 6 and up
38. math

this was really helpful THX so much
39. US History

Describe the role of the Quakers, Puritans, and Indians and how each of these groups felt about these leading nations. (By leading nations I mean the three world powers; Great Britain, France, Spain) This is only half the question. I answered the first part which is Describing...

Ok I think I understand now, thank you very much for the explanation and the website as well. It really helped!!

For a carbon atom that is sp2 hybridized, I understand that the electron configuration would be Yes, 1s2 2s1 2p3 which is a 2s up arrow,and 3 orbtials that are 2p up arrows but then since the four bonds hybridize to form four sp3 hybrid bonds how do I write this? Also for an ...
42. Chemistry

Sorry, the electron config that I posted was for sp2 which I am still not sure is correct.
43. Chemistry

So the C in methane would be sp3 correct? So does this mean that the electron config would be 1s orbital with an up and down arrow, 2 sp2 orbitals with 3 single up arrows, and a 2p orbital with a single up arrow?
44. Chemistry

I am having trouble figuring out the electron configuration for a carbon atom when it is in a molecule such as methane. I know that the ground state configuration for carbon is 1s2 2s2 2p2 but im not sure how to figure it out when it is bonded to other atoms. Thank you for the...
45. Math - Data Management

If we take a sample of 2400 families with five children, a) what is the probability that a family will have exactly 2 girls? b) How many of the families would you expect to have exactly two girls?
46. Geometry

If the ratio of the areas of two similar hexagons is 4:49, find the ratio of their apothems
47. Social Studies

Why did The Aquarius lose its funding from the NOAA?

58,584
49. College Chemistry

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
50. College Chemistry

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
51. College Chemistry

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?
52. robert

We finally reached Enkhuizen, an ancient harbor town, where the brisk wind from the sea was blowing so hard that we had to hold on to hats, skirts, and scarves. We walked with farmers and their families to the ferry boat. The farmers were holding baskets full of chickens, ...

Which of the following groups of words in bold is nonrestrictive and should therefore be set off with commas in the sentence My yarn WHICH IS BLUE AND GRAY will make a very pretty scarf. Hats KNITTED BY MY MOTHER are worn all winter by my family. The person WHO TAUGHT HER TO ...

thank you
55. Comma help

Choose the option that corrects the sentence below. If the sentence is correct, select “d. The sentence is correct.” Commander-in-Chief Sam Houston defeated the Mexican army and captured Santa Anna in 1836 A Commander-in-Chief, Sam Houston, defeated the Mexican army ...

thank you
57. English help

add the comma to the sentence As they studied the film they noticed some rules of science at work i wrote mine like this As they studied the film, they noticed some rules of science at work
58. Math help

A pyramid has a height of 5 in. and a surface area of 90 in2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary
59. math help

ind the radius of a sphere with a surface area of 804 cm2
60. math help

Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for ð and round to the nearest tenth
61. Science

What is convection?

Thanks!!
63. Science

What units of measurement do you use to measure the earth to... 1. Moon 2. Galaxy 3. Sun 4. Communication satellite 5. Pluto 6. Proxima Centauri
64. Physics

How fast must the ball rolled along the surface of a 70cm high table so that when it roll off the edge it will strike the floor at the same distance (70cm) from the point directly below the edge of the table.
65. physics

A boat propelled so as to travel with a speed of 0.50m/s in still water, moves directly ( in a straight line) across the river that is 60m wide. The rivers flows with a speed of 0.30m/s. How long in a seconds does it take the boat to across the river?
66. Physics

Pls sir, kindly send the solution to my email. thanks. 1)A boat propelled so as to travelled with a speed of 0.50m/s in still water, moves directly ( in straight line ) across a river that is 60m wides. The river flow with a speed of 0.30m/s. How long in seconds does it take ...
67. Discrete Math

1.Using the principle of inclusion-exclusion find the numbers of integers between 1 and 1000 (inclusive)that are divisible by at least one of 2,3,5,or 7? 2.A drug store sells gum, candy, and playing cards. 15 teenagers are in the store...the clerk notes after the teenagers ...
68. geometry

Just flip flop the two

26\$

Thanks!
71. calculus

Find all solutions to the equation in the interval [0,2pi) Cosx-cos2x
72. calculus

Cos(pi/12) solve using half angle formula

2.4
74. trig

Okay thank you for the help on one and three. In my book for number two it says the answer is sin1/2 which is approx. 0.479. I'm not sure how that answer comes about.
75. trig

solve for x in the following equations: 1) sin(arcsin x) = 1 2) 2arcsin x = 1 3) cos(arccos x) = 1/3
76. marine science

Which directions do the blood and water go in a fish gill?
77. science

if an objects moves 5 cm/h what is its rate expressed in cm/day
78. science

over seven days, a plant grew from 12 cm to 33 express its average growth rate in cm/day
79. science

if a car travels 93 km/h, what rate is it traveling in km/min
80. algebra

60 - (15)(2)/3
81. Chemistry

To ensure equal mixing of the solution
82. chemistry

Lead pipes were once used to transport drinking water and are still found in some older homes and city water systems. Suppose the lead concentration and pH of the water determined by lead (II) hydroxide (Ksp = 2.8x10^-16) dissolving to produce a saturated solution. What would ...
83. general chemistry

Let the fraction of Cl-35 be x and that of Cl-37 y. (x)(34.969)+(y)(36.966)=35.453 Since the total of x and y must equal one, substitute y=1-x. Solve for x. Solve for y. Multiply each one by 100 to convert to percent.
84. Chemistry

You're missing a key word in the problem. For what are you being asked to calculate? (calculate the __ of each of the following) Even without knowing the question I can tell you that answer cannot be zero if you are solving for the concentration of some species. All ...
85. french

Why must one say classe de francais, for french class, and not classe francaise? How does one know when to use de in a descriptive phrase?
86. Pre-Cal

Test for symmetry with respect to Q=pi/2, the polar axis, and the pole. r=6 sinQ I know I have to replace (r,Q) with (r,pi-Q) (r,-Q) and (-r,Q) so would that be (6,pi/2)? I do not know how to find the Q.
87. Math

Test for symmetry with repsect to Q=pi/2, the polar axis, and the pole. r=16cos 3Q r=16cos(3pi/3 + 3h) = 16(cos3pi/2 3h- sin 3pi/2 sin h) cos 3pi/2 = 0 sin 3pi/2 = -1 Not symmetrical My teacher said that this was wrong!Why?
88. Math

Use a graphing utility to graph the function. Then use the trace or table feature to identify the limit. lim 5/x-2 x-->2 I know I posted this question before but I am still having a hard time doing this. I pressed the y= button and typed the normal equation in: 5/x-2. Is ...
89. Math

Find an equation of the parabola. vertex:(-1,2) focus:(-1,0) (x+1)^2 = 4p(y-2) (x+1)^2 = 0(y-2) (x+1)^2 = (y-2) Correct?
90. Math

Find the vertex, focus and directrix of the parabola. 4x - y^2 - 2y - 33 = 0 y^2+2y+1 = -4x+33+1 (y+1)^2 = -4(x+8.5) vertex:(-1,-8.5) focus:(-2,-8.5) Directrix: x=0 Is this correct?
91. Math

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sec Q y = cos Q x^2 + y^2 = 1/cos^2 + sin^2/cos^2 = x^2(1 +sin^2) = x^2(2-cos^2) x^2(2-1/x^2) = 2x^2 - 1 x^2 - y^2 = 1 My teacher said to use secant*cosine = 1. ...
92. Math

For the function x^2 + 2x - 4 , find lim f(h+4) - f(4) / h h-->0
93. Math

Test for symmetry with respect to Q=pi/2 , the polar axis and the pole. r = 16 cos3Q Please explain. I do not know how to do this. Thank You!!

Thank You!!

Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is the ball in the air...
96. Math

Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is the ball in the air...
97. Math

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = secQ Y = tanQ Would I use cos^2Q + sin^2Q = 1?
98. Math

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sqrt t y = 1 - t
99. Math

Eliminate the parameter and write the corresponding rectangular equation whose graph represents the curve. x = sqrt t y = 1 - t
100. Math

I am trying to find the standard form of this equation for an ellipse. 9x^2 + 4y^2 - 36x + 8y + 31 = 0 First I grouped the x and y's together. 9x^2 - 36x + ? + 4y^2 + 8y + ? = -31 + ? + ? Then I factored the 9 and 4. 9(x^2-4x+4) + 4(x^2+2x+1) = -31+36+4 9(x-2)^2 + 4(x-1)^...
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