Wednesday
October 1, 2014

Posts by Emma


Total # Posts: 1,177

Chemistry
Thankyou Dr. Bob also on my other question I am not sure how to get the heat capacity of NH4Cl to calculate molar enthalpy and I also don't know how to determine the concentration of NH4Cl inside the calorimeter. Please help me on that question as well and thankyou soo much.
November 13, 2012

Chemistry
A 5ml, 10ml, 15 ml, and 20ml Aliquot of 0.010 M sodium salicylate solution was diluted to 100 ml in four different 100ml volumetric flasks with the iron (III)Chloride solution. What are their concentrations.
November 13, 2012

Chemistry
Thankyou Dr. Bob and can you please help me on one more question if this reaction goes to completion what would the final concentration of NH4Cl in the calorimeter. I know how to figure it out if its not in the calorimeter but I am wondering if the calculations are different ...
November 12, 2012

Chemistry
I don't know the heat capacity of NH4Cl or the density of it, can you please help me figure those out.
November 12, 2012

Chemistry
Calculate the molar enthalpy for the following reaction. HCl(aq) + NH3 (aq) --> NH4Cl (aq). HCl = 50 ml (2.00M) NH3 = 50 ml (2.05 M) Delta T = 9.28 degrees Celsius. Ccal = 28.9J/g degrees celcius.
November 12, 2012

Math
Please help me understand this question, thanks! 10. Write the slope-intercept form of an equation of the line perpendicular to the line in Exercise 7 with a y-intercept of -3. 7. (4, -9), (-3, 2)
November 12, 2012

Physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?
November 12, 2012

Physics Q
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during this time.
November 10, 2012

Physics Help!
An air bubble has a volume of 1.51 cm3 when it is released by a submarine 102 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume that the temperature of the air in the bubble remains constant during ascent.
November 10, 2012

PHYSICS!
0.115 kg of water at 81.0o C is poured into an insulated cup containing 0.220 kg of ice initally at 0o. Calculate the mass of liquid when the system reaches thermal equilibrium.
November 10, 2012

Physics
If a sonar echo takes 2.20 seconds to return from a whale, how faw away is the whale?
November 6, 2012

Math
Actually it's 12 because you have to divde 24 by 2 and it leaves you with 12.
November 4, 2012

Math
8 / 10 = x / 15 times 15 on each side =24
November 4, 2012

Literature
Please help me understand this, thanks. The way a topic is handled is called its treatment. Review the chart you completed as you read the speech. Then describe Obama's treatment of his family in the speech. By speech, it's referring to Out of Many, One.
November 4, 2012

Math Vocab
I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.
November 4, 2012

Algebra
Oh ok I get it. Is there any work to show to get this answer?
November 1, 2012

Algebra
May you please help me understand how to do this? Thanks Give the slope of a line perpendicular to the given line. 1. y=3x+5
November 1, 2012

Thermal Physics, Kinetic Theory of Gases
Your velocity is incorrect, it is too slow
November 1, 2012

Language arts
Check my answer please Which of the following would not be considered an asset? A) credit card debt B) a good credit rating C) an education Answer: A
October 29, 2012

calculus
lim x^(3)+x x->2 Suppose x^(2)+1 is greater than equal to f(x) is greater than equal to 4x-3 for all x. Compute lim f(x) x->2
October 27, 2012

math
(-x-3)+(4x-7) =3x -10
October 25, 2012

Math
To rewrte it in y=mx+b form, you do this : 3y=6x+3 divide both sides by 3 so it would be y= 2x+1
October 25, 2012

math
(14x-5)+(6x-4) = 14x-5+6x-4 Combine all like-terms =20x-9 Thus, 20x-9 is your final answer. Hope I helped!
October 25, 2012

English
Oh okay, thanks I get it now.
October 25, 2012

English
The full verb is "was propelled" Why wouldn't it be passive?
October 25, 2012

English
Write the complete verb in each sentence. Label it active or passive. 1. It was propelled by six paddles on each side. Each side was propelled by six paddles. Passive?
October 25, 2012

Algebra
May I ask how you got 5x-5=0 ?
October 23, 2012

Algebra
I don't get how you do this please help, thanks! Write the equation in the form ax+b=0. Then write the related function y=ax+b. 5x+2=7
October 23, 2012

math
Write a formula for this sequence: 50, 83, 116, 149,... I just dont know how to find it..
October 23, 2012

English
I have to come up a reason for my claim help please? Thanks! My claim: technology is harmful to children and teens.
October 22, 2012

Algebra
Can you please help me understand this? Thanks Find the value of y so that the passing line through the two points has the given slope. 1. (2,y) (3,3) ;m=2
October 16, 2012

6th grade Math
Change 85% to a decimal which is 0.85 and then times it by 20: 0.85*20 = ? You times them together and you'll get your answer. Hope I helped!
October 16, 2012

English
Change the verb into the tense indicated. I am here. (past perfect)
October 15, 2012

Physics
A 2.7 kg bucket of water is raised upwards by a rope. If the bucket has an acceleration of 3.4 m/s/s, find the force exerted by the rope on the bucket.
October 12, 2012

Physics
A car with a mass of 1797 kg is moving to the right at a constant velocity of 2.50 m/s. What is the net force acting on the car?
October 12, 2012

Physics
On an aircraft carrier, a jet can be catapulted from 0 to 155 mi/h in 2.00 s. If the average force exerted by the catapult is 5.53×106 N what is the mass of the jet?__________ kg
October 12, 2012

Physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50 x 105 kg, its speed is 27.0 m/s, and the net braking force is 4.73 x 105 N. (a) What is its speed 7.50 s later? (b) How far has it traveled in this time? (a) Its speed 7.50 s ...
October 12, 2012

History
What country are these cities in? Bellman, Port-au- Prince , Tegucigalpa and Managua?
October 11, 2012

Algebra
How can you tell by looking at a table if its quadratic, linear or exponential? For ex. x: -2, -1, 0, 1, 2 y: 6, 1, 0, 1, 6
October 10, 2012

English
Complete the sentence by writing the correct form of the verb shown in parenthesis. "It has _______," Martin said matter-of-factly. (burst)
October 10, 2012

Physics
In a circus performance, a monkey on a sled is given an initial speed of 3.2 m/s up a 31° incline. The combined mass of the monkey and the sled is 20.7 kg, and the coefficient of kinetic friction between the sled and the incline is 0.20. How far up the incline does the ...
October 9, 2012

Landforms-history
What is a large, raised that rises above the surrounding ground?
October 4, 2012

science
how does a change in wavelength affect the speed of a photon.
October 3, 2012

science
how many days would it take to fly to Jupiter (from Earth) in a space shuttle at 45,000 miles per hour? The minimum distance between the Earth and Jupiter is 365 million miles.
October 3, 2012

science
how many days would it take to drive from the earth to the moon at a speed of 75 miles per hour? the average distance from the earth to the moon is 380,000km. 1 km=0.62 miles
October 3, 2012

History
True or False: 1. A region near the ocean will be cooler than a region inland of the same latitude. 2. The tundra is an area of cold climate with low-lying vegetation. (true?) 3. The climate of highland regions gets colder and colder as you go higher. (false?) 4. Temperate ...
October 2, 2012

Math
How can you tell by looking at a graph if it's a linear, quadratic or exponential function?
October 1, 2012

English
I am writing an evidence paragraph telling what people do to their bodies in order to look good. Make-up, braces, surgery , etc are examples but they are not really "technology". This is what I have so far: Today we have upgraded technology ... Is there another word ...
September 30, 2012

English
Underline the verb phrase and circle the main verb. Mandy is reading about different languages. Verb Phrase: is reading Main Verb: Reading?
September 29, 2012

Algebra
Substitute the numbers in x and solve. 1) 4/5^x -2,-1,0,1,2 2) 2^x -2,-1,0,1,2
September 27, 2012

History
The areas between the Tropics of Capricorn and Cancer are (A. High or B. Low) latitudes.
September 27, 2012

Math
Can you please give me an example of a function notation? Thanks.
September 27, 2012

Math
Anyone know how to do this? :/
September 26, 2012

Math
find the difference quotient when given f(x)= -2x^2+4x-1
September 26, 2012

English
Can you please help me rephrase this so there won't be any "I, Me, My, Us, We, Our, Your or You" in it? Thanks Have you ever given up something you love?
September 25, 2012

biochemistry
The pH of 0.02M solution of a weak acid was measured at 7.6. What is the [OH-] in this solution? B) The Ka for benzoic acid is 6.4 x 10-5M. 150 ml of 0.1 M NaOH is added to 200 ml of 0.1 M benzoic acid, and water is added to give a final volume of 1 L. What is the pH of the ...
September 21, 2012

English
Would a soldier sacrifice their life to serve the country?
September 20, 2012

English
Can you please give me three examples of friendship and sacrifice? Thanks.
September 20, 2012

Common ways
What is a common way we may need help?
September 18, 2012

Chemistry
A pool is 4.57 m long, 3.04 m wide, and 1.83 m deep. If the pool is completely filled with water, what will the weight of the pool be in pounds if 1 Kg=2.2 pounds.
September 17, 2012

algebra
solve for h: v=lwh V=lwh 1. divide lw on each side 2. VLW= H Am I right?
September 17, 2012

English
Ok, I think I got it. Also, does sacrifice mean "given up"?
September 16, 2012

English
I am writing two paragraphs about two themes but I can't think of two conclusion sentences. The themes are friendship and sacrifice. Help please? Thanks
September 16, 2012

math
An example of: Ratio of a to b
September 16, 2012

Math
Can you please give me an example of a solution step? Thanks.
September 16, 2012

ENGLISH
i was right on the first one too.
September 4, 2012

ENGLISH
ok thank you, and there are seven.
September 4, 2012

ENGLISH
i gave you answers to check ~ = my answer
September 4, 2012

ENGLISH
3. What is the rhyme scheme of the following Anne Bradstreet poem? To Her Father with Some Verses Most truly honored, and as truly dear, If worth in me or ought I do appear, Who can of right better demand the same Than may your worthy self from whom it came? The principal ...
September 4, 2012

AP Language & composition
1) what type of source it is, such as a book, web article, newspaper, etc. 2)the source’s entry on the Works Cited page. would that make sense for an answer?
September 3, 2012

AP Language & composition
im confused then..
September 3, 2012

AP Language & composition
the title of the source?
September 3, 2012

AP Language & composition
What two pieces of information are necessary each time you cite a source in the text of your paper?
September 3, 2012

geometry
Campsite F And G Are On Opposite Sides Of The Lake.A Survey Crew Made Measurements Shown On The Diagram .What Is The Distance Between The Two Campsites?
August 17, 2012

RE: English
2. when deciding whether to read a newspaper article, which technique is most useful? I think it's jigsaw?
August 13, 2012

English
Is it jigsaw ?
August 12, 2012

English
1. Reading text to obtain an overview of major ideas and disregarding 2. when deciding whether to read a newspaper article, which technique is most useful? A. jigsaw B. flowchart C. skim D. scan I think 1. C and 2. is B? What is a jigsaw and flowchat ?
August 12, 2012

business
what is the formula used and the values used for each variable to calculate the monthly payment of $804.45 and the amount of the loan is $50000.
August 12, 2012

English
The pronoun in this first sentence is "they" and the adverb in that first sentence is fast? The adverb in the second sentence is be?
August 11, 2012

English
Adrian saw his friend Bob walking fast down the hall. What is the adverb and pronoun in this sentence? The adverb in this sentence: Soon the computer store will be closed.
August 11, 2012

English
Direct or indirect quote? "Want to jog a lap with me, Dad?" asked David. "Sure, but let's take it slow," said Dad. Is it direct quote?
August 11, 2012

English
What does conscious will mean?
August 5, 2012

English
Katherine said, "Are you coming home today?" The "are" isn't suppose to be capitalized right?
August 5, 2012

English
I looked at the growing dark clouds and I realized a massive storm was approaching. What poetic device is being used? I think it's personification.
August 5, 2012

English
I looked at the growing dark clouds and I realized a massive storm was approaching. What poetic device is being used? I think it's personification.
August 5, 2012

English
Then if there are no compound verbs in that sentence then which choice do you think it would "make sense" to choose? A. lacrosse, looks B. look, is C. lacrosse, sport D. looks difficult
August 4, 2012

English
So what you mean is that there are no compound words in this sentence? And I should choose Lacrosse and looks?
August 4, 2012

English
Look for the compound verbs in the sentence below; Lacrosse looks like an easy sport to play but it is really quite difficult. The two compound verbs I found were "looks" and "is".
August 4, 2012

English
Does dismal mean fake?
July 29, 2012

English
Ok thanks!
July 29, 2012

English
What are some antonyms for: Synthetic thrifty What are some synonyms for: synthetic thrifty somber
July 29, 2012

English
Thanks!!
July 28, 2012

English
What is an "inside address" for a letter?
July 28, 2012

English
Is there a choice that is close to an antonym for ignorant? And also is ignorant and uneducated synonyms then?
July 28, 2012

English
Antonyms of: Careful: False: ignorant: A: uneducated B: reckless C: intelligent D: untrue E: Genuine I think careful is B false: E ignorant: A
July 28, 2012

English
So you mean that it would be better to choose D?
July 26, 2012

English
Also, in the directions, they referenced that- Electronics sources are information accessed by a computer. So would it still be D?
July 26, 2012

English
The internet is a/an source. A. print B. electronic C. non-print D. media I can't choose between choice B and choice D.
July 26, 2012

English
A book or magazine in its original form is a/an ________ source. A. media B. print C. electronic D. oral I think it's B.
July 26, 2012

Math
the radius of a cylindrical tank is enlarged so that its radius is twice larger than before. How much largerthe volume of the enlarged tank is?
July 23, 2012

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