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Questions Asked on May 1, 2013

The value of delta H for the reaction below is -6536 kJ. ____kJ of heat released in the combutsion of 16.0g of C6H6.2C6H6(l) +
1. 2 answers
2. asked by Anonymous
3. 13,122 views
1.What is the change in atomic mass number when an atom emits an alpha particle? decreases by 2 *decreases by 4 increases by 2
1. 10 answers
2. asked by Anonymous
3. 6,398 views
A satellite dish has a parabolic cross section and is 6 ft deep. The focus is 4 ft from the vertex. Find the width of the
1. 1 answer
2. asked by Jamie
3. 3,322 views
A pencil is rolled off a table of height 0.35 m. If it has a horizontal speed of 2.1 m/s, how long does it take the pencil to
1. 1 answer
2. asked by Anonymous
3. 2,957 views
Sodium metal reacts violently with water to form NaOH and release hydrogen gas. Suppose that 3.00 g of Na reacts completely with
1. 1 answer
2. asked by Janet
3. 2,904 views
An architect's compensation package includes the total cost of a $250-per-month health insurance plan, the total cost of a
1. 5 answers
2. asked by Tifini
3. 2,832 views
A rainwater collection tank is shaped like a cylinder with a diameter of 4 ft and a height of 6 ft. What is its volume? Use 3.14
1. 7 answers
2. asked by Anonymous
3. 2,808 views
Two waves traveling on a string in the same direction both have a frequency of 150 Hz, a wavelength of 2 cm, and an amplitude of
1. 1 answer
2. asked by Lege
3. 2,729 views
A piece of dry ice (solid carbon dioxide) with a mass of 5.40 g is placed in a 10.0 L vessel?that already contains air at 715
1. 2 answers
2. asked by Anonymous
3. 2,676 views
1.What finally decided the outcome of the 2000 presidential election? Congress a state court judge *the U.S. Supreme Court the
1. 8 answers
2. asked by Anonymous
3. 2,550 views
1.Why do you think an FRH doesn’t come with water already in it?2.Do you think there are small pieces or large pieces of
1. 6 answers
2. asked by James
3. 2,455 views
What do mountains breathe through?Volcanose?
1. 8 answers
2. asked by Jerald
3. 2,308 views
Oscar Corporation is planning to construct an elliptical gate at its headquarters. The width of the ellipse will be 5 feet
1. 3 answers
2. asked by Tyler
3. 2,196 views
Trina's employer purchased a health insurance plan that costs $550 per month. Trina pays $85 toward the plan each month. What is
1. 5 answers
2. asked by Tifini
3. 2,035 views
How many moles of butane do we need to produce 10 moles of CO2 by reaction with oxygen? I think the balanced equation is 2 C4H10
1. 2 answers
2. asked by Timofey
3. 1,971 views
joel walked 2/5 of a mile to the store. 3/10 of a mile to the library,and 1/20 of a mile to the post office. how far did he walk
1. 7 answers
2. asked by Anonymous
3. 1,946 views
Given f(x)=x^2 + x + 4 and h(x)= 3x +2, evaluate the composite function.f [h(x)]
1. 1 answer
2. asked by Tanya
3. 1,871 views
a 1-kilogram block slides down a frictionless inclined plane with an angle of 35 degrees and 1.0 meters high. what is its
1. 2 answers
2. asked by Anonymous
3. 1,831 views
Given the following unbalanced equationC4H10 (g) + O2 (g) → CO2 (g) + H2O (l) What mass of water forms if 6.5 L of C4 H10 (g)
1. 1 answer
2. asked by Dars
3. 1,797 views
Ultraviolet light is typically divided into three categories. UV-A, with wavelengths between 400 and 320 , has been linked with
1. 1 answer
2. asked by Anonymous
3. 1,796 views
Find the radius of a right circular cone if its volume is 1.5 times its lateral area and its radius is half its slant height.
1. 2 answers
2. asked by Allison
3. 1,678 views
7t^4 • 7t^4A.49t8 B.14t4 C.49t16 D.14t8 Is this 49t^8...A..?
1. 2 answers
2. asked by Cassie
3. 1,467 views
50.0 mL of 0.116 M NaOH is titrated with 0.0750 M HCl. Calculate the pH after the addition of 5.0 mL volume of acid.
1. 1 answer
2. asked by Nathan
3. 1,443 views
A flute can be regarded as a tube open at both ends. It will emit a musical note if the flutist excites a standing wave in the
1. 3 answers
2. asked by rishabh gupta
3. 1,364 views
A boy is riding a skateboard. Why does the skateboard have the ability to do work?A. because it can slow down B. because it can
1. 2 answers
2. asked by Anonymous
3. 1,296 views
A person is standing outdoors in the shade where the temperature is 22 °C. (a) What is the radiant energy absorbed per second
1. 1 answer
2. asked by Tim
3. 1,256 views
3. Which one of the following sentences best describes paraphrasing?A. Janette listened to the speaker and took notes. B.
1. 1 answer
2. asked by selena
3. 1,250 views
This is my sentence...When a single subject is being connected to a plural subject using “or” then the verb is plural. Would
1. 1 answer
2. asked by Serena
3. 1,214 views
A nail is driven into a board to a depth of 1.00 cm with one strike from the hammer. The hammer striking the nail hit it with a
1. 0 answers
2. asked by kelli
3. 1,213 views
Aqueous ammonia is typically sold by chemical supply houses as the saturated solution, which has a concentration of 14.5mol/L.
1. 1 answer
2. asked by Shashi
3. 1,209 views
what is the rate of a first-order reaction that has a reactant concentration of 1.1M and a rate constant of 0.14/s?
1. 1 answer
2. asked by George
3. 1,206 views
I need help with the rhyme scheme and rhythm pattern."It was many and many a year agoIn a kingdom by the sea,That a maiden there
1. 5 answers
2. asked by Victoria
3. 1,193 views
Differentiateln(cos(2x))
1. 2 answers
2. asked by Ty
3. 1,188 views
A 17 foot ladder is placed against a wall. if the foot of the ladder is pushed toward the wall at 0.5 feet per second, how fast
1. 1 answer
2. asked by Tim
3. 1,173 views
5 factors that contribute to a lack of physical fitness and proper nutrition in the adolescent
1. 1 answer
2. asked by summet
3. 1,161 views
you need to make a three dimensional model of a soup can using paper and tape. What 3 dimensional shapes do you need to cut ot
1. 1 answer
2. asked by jill
3. 1,138 views
A math class has girls and boys in the seventh grade and girls and boys in the eighth grade. The teacher randomly selects a
1. 3 answers
2. asked by MADISON
3. 1,118 views
Alliant Corporation sold $100,000,000 face value 8% bonds. The bonds mature in 20 years and pay interest semiannually. The going
1. 0 answers
2. asked by Jessica
3. 1,102 views
Lines p and q are parallel and are intersected by transversal r. If angle 1 = 4x degress and angle 2 = 2x+24 degrees, what is
1. 2 answers
2. asked by Joe
3. 1,087 views
Calculate Kp at 298K for the reaction SO2 + NO2--->SO3 + NO
1. 2 answers
2. asked by Charlie
3. 1,085 views
How could an architect estimate the weight of a brick wall if each brick weighs three pounds?
1. 2 answers
2. asked by Grayson
3. 1,082 views
Shall I compare thee to a summer’s day?Thou art more lovely and more temperate: Rough winds do shake the darling buds of May,
1. 2 answers
2. asked by Jen
3. 1,071 views
1/4v=5Use the substitution method to solve this problem.
1. 1 answer
2. asked by Janey
3. 1,033 views
1. The crime control model:A. stresses the possibility of error in the stages leading to trial. B. believes in protecting
1. 3 answers
2. asked by Amy
3. 1,024 views
Could someone check my answers?25. 32^(2x-3)=2 Answer- x= 8/5 26. 9^(2x+1)=81 Answer- x= 1/2 27. 1/4=2^3x Answer- x= -2/3 28.
1. 2 answers
2. asked by Caroline
3. 1,022 views
Cepheid variables are vital for measuring the distances of relatively nearby galaxies. What is the probability of finding a
1. 1 answer
2. asked by Karla
3. 1,021 views
A right triangle has perimeter equal to 80 and hypotenuse equal to 34. What is the area of the triangle?
1. 2 answers
2. asked by David Kroell
3. 1,019 views
Two rulers are the same length. Ruler A is divided into 357 units while ruler B is divided into 255 units The rulers are placed
1. 2 answers
2. asked by Marshall
3. 1,006 views
Write 1/8 as a decimal
1. 1 answer
2. asked by Anonymous
3. 1,006 views
Givenh(x)= 2x + 2 and f(x)=1/2 x + 4, evaluate the composite function. h[f(x)]
1. 1 answer
2. asked by Tanya
3. 1,002 views
A group of wind turbines operates in an open field. Which statement about the wind turbines is true?Answer A. The wind turbines
1. 1 answer
2. asked by Anonymous
3. 999 views
if matt buy's a cola at $1.69,gets a refill 3 time, for cost of $.45 each: which answer best fit the problem!a.d=3-1.69+.45
1. 1 answer
2. asked by latoya jefferson
3. 997 views
Physics Help!!!!! Maximum Kinetic Energy based on a graph?A 2.50kg ball is attached to an unknown spring and allowed to
1. 2 answers
2. asked by Darren
3. 982 views
Consider the Balanced Chemical Equation2N2+6H20-->4NH3+3O2 How many moles would be needed to react fully with 0.225 moles of N2?
1. 1 answer
2. asked by Katie
3. 973 views
Ariel's garden is planted in the shape of a square and has an area of 81 square feet. If she plans to put a fence around the
1. 1 answer
2. asked by Daniel
3. 971 views
What explains how to model -5+ 3 on a number line?Is it start at zero tehn move left five times then right three times to end at
1. 3 answers
2. asked by Moby
3. 959 views
what is the noun fuction of He must like studying calculus.
1. 1 answer
2. asked by Dilly
3. 958 views
a metal sample carrying a current along X-axis with density Jx is subjected to a magnetis field Bz(along z-axis). the electric
1. 0 answers
2. asked by aku
3. 952 views
The volume of a sample of a gas collected over water at 32 Celsius and 752 torr is 627 ml. What will the volume of the gas be
1. 2 answers
2. asked by Cory
3. 940 views
1. Chemists define pH as "the negative logarithm of the concentration of protons". In mathematical terms:pH = - log [H+] What is
1. 1 answer
2. asked by Lynn
3. 937 views
a 2-month note for $4,500 was drawn on July 3 at 8%. If money is worth 9%, find the present value of the note on the day it was
1. 0 answers
2. asked by Alice
3. 935 views
Part 1: Poem StructureCheck my following answers below, and I need help with theme? Dx In this part, you will analyze the
1. 2 answers
2. asked by Victoria
3. 924 views
in 10 15 lines critically discuss 5 ways in which the human or enviromental problem impacts on the community
1. 1 answer
2. asked by khulo
3. 919 views
Provide 5 ways in wich you critically discuss the impact of hiv/aids on teenagers
1. 1 answer
2. asked by Thapelo
3. 901 views
Identify and describe 3 environmental health hazards that cause ill heath,crises,and or disasters within the community
1. 1 answer
2. asked by Anonymous
3. 900 views
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after
1. 1 answer
2. asked by Brittany
3. 885 views
Square ABCD has M as the midpoint of AB, N as the midpoint of BC, P as the midpoint of CD and Q as the midpoint of MP. If the
1. 1 answer
2. asked by Hale
3. 879 views
range ofsin(siny) +cos(siny)
1. 1 answer
2. asked by Anonymous
3. 845 views
why is a blue star cuz of temperatuure or location
1. 1 answer
2. asked by aa
3. 845 views
Every sentence in the paragraph below violates some principle of good persuasive writing. Revise the paragraph, following the
1. 1 answer
2. asked by Josh
3. 829 views
Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through
1. 1 answer
2. asked by Shreya
3. 820 views
Three metals, iron, copper, and gold, have heat capacities of 0.450 J/goC, 0.385 J/goC and 0.129 J/goC, respectively. A 10g
1. 1 answer
2. asked by kay
3. 816 views
1. Read the following stanza from “Alone”:Lying, thinking Last night How to find my soul a home Where water is not thirsty
1. 2 answers
2. asked by amber
3. 799 views
Three roots of f(x)=x^4−2x^3+ax^2+bx+c are −5, −3 and 4. What is the value of a+b+c?
1. 1 answer
2. asked by ianian
3. 799 views
8. Which of the following options accurately represents the steps involved in the writing process?A. Write first draft, edit,
1. 1 answer
2. asked by selena
3. 795 views
Juan's model locomotive is 7 5/8 in long HIs coal car is 6 1/4 in long when hooked together there is a 7/8 inch space between
1. 2 answers
2. asked by Jerald
3. 782 views
dilute the concentration of 100mL of KIO3 from 0.5M to 0.0005M
1. 1 answer
2. asked by lizette
3. 779 views
I am having trouble with this equation and calculating the enthalpy of formation.2 NaHCO3 (s) --> Na2CO3 (s) + H2O (g) + CO2 (g)
1. 0 answers
2. asked by Laura
3. 779 views
bar subjected to gravity load (two segments)the bar in the fig has constant cross sectional area A .the top half of the bar is
1. 21 answers
2. asked by mehwish
3. 762 views
Is this the correct numerical expression for 15 less than one-ninth of P?15-1/9 P
1. 1 answer
2. asked by Ann
3. 748 views
a rectangular garden has a perimeter of 140m.its width is three quarter of its length.what is the length and width?
1. 1 answer
2. asked by nia biscraft
3. 747 views
In a sample of 77 widgets,6 were defective, How many defective widgets would you expect in a sample of 616 widgets?
1. 1 answer
2. asked by pandora
3. 744 views
21. Classify the following solutions in order of increasing pH:a. 0.01 M NaOH b. pure water c. 0.10 M HCl d. 0.05 M NaOH e.
1. 1 answer
2. asked by scilover
3. 742 views
A spherical ballon is being inflated at the rate of 35cc/min. the rate of increase in the surfece area(un cm²/min.) of the
1. 1 answer
2. asked by aku
3. 738 views
A boy is riding a skateboard. Why does the skateboard have the ability to do work?Answer A. because it can slow down B. because
1. 1 answer
2. asked by Anonymous
3. 736 views
18.75 tons= how many lbs?
1. 1 answer
2. asked by daraishia
3. 722 views
Jan built a cube from unit cubes (each 1 by 1 by 1 unit). Ken took this cube apart,and used the unit cubes to build a
1. 3 answers
2. asked by Nate Williams
3. 714 views
Rotating blade (body force in axial loading)A blade is fixed to a rigid rotor of radius R spinning at omega(w) rad/sec around
1. 0 answers
2. asked by mehwish
3. 712 views
1. The majority of historical and scholarly evidence suggests that poverty:A. and crime tend to increase at the same time. B.
1. 1 answer
2. asked by Amy
3. 704 views
The volume of a mass of gas is 300 ml at 25 Celsius and 685 torr. What will the gas occupy at STP?
1. 1 answer
2. asked by Isabel
3. 698 views
Consider the series RLC circuit in which R2<4L/C (underdamped).Assume that at t=0 , the charge on the capacitor has its maximum
1. 17 answers
2. asked by rishabh gupta
3. 685 views
bar subjected to gravity load (two segments)the bar in the fig has constant cross sectional area A .the top half of the bar is
1. 1 answer
2. asked by mehwish
3. 682 views
The inverted pendulum shown consists of auniform rod of length L and mass M hinged at its base. A spring is attached a distance
1. 0 answers
2. asked by aisha
3. 681 views
Please rephrase the following sentences into a more simple manner.I need to give a presentation and i would like to write this
1. 8 answers
2. asked by alex
3. 670 views
How do you pronounce "mouths," which is the plural form of 'mouth.'
1. 1 answer
2. asked by rfvv
3. 656 views
What are welfare payments or consumer subsidies?
1. 9 answers
2. asked by lee
3. 652 views
A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of
1. 0 answers
2. asked by Kate
3. 649 views
Hi I am a matric learner and I am having trouble with an lo portfolio assignment. it is about environmental issues and im stuck.
1. 2 answers
2. asked by Ashley
3. 648 views
In the plane, the points with integer coordinates are called lattice points. Suppose a flea in the plane jumps from one lattice
1. 1 answer
2. asked by Hale
3. 647 views
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after
1. 0 answers
2. asked by Brittany
3. 646 views

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