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Questions Asked on October 27, 2010

how can adding doubles help you multiply by 2?
1. 17 answers
2. asked by boo
3. 14,013 views
the activation energy for the decomposition of HI(g) to H2(g) and I2(g) is 186kj/mol. the rate constant at 555k is 3.42 x 10^-7
1. 2 answers
2. asked by Jim
3. 9,650 views
A Galvanic cell consists of Mg electrode in a 1.0 mol L -1 Mg(NO3)2 solution and a Ag electrode in a 1.0 mol L-1 AgNO3 solution.
1. 3 answers
2. asked by Elleni
3. 9,648 views
What happens when the King of Beasts runs in front of a train? I cant figure out the riddle. I need help! :)
1. 21 answers
2. asked by Mintsey
3. 6,735 views
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 20 m radius
1. 7 answers
2. asked by tyler
3. 5,579 views
Four identical 1.0-L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure. Which gas sample has the
1. 2 answers
2. asked by Tasha
3. 5,352 views
A child bounces a 46 g superball on the side-walk. The velocity change of the superball isfrom 28 m/s downward to 16 m/s
1. 5 answers
2. asked by Johnnie
3. 4,723 views
3) The following set of data was obtained by the method of initial rates for the reaction:2 HgCl2(aq) + C2O42-(aq) 􀀏 2
1. 1 answer
2. asked by Olivia
3. 4,309 views
How does a Hawaiian Baritone laugh?
1. 14 answers
2. asked by Tyler
3. 4,306 views
Electromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The energy of one photon of this
1. 2 answers
2. asked by Sarah
3. 4,001 views
Data: SO2(g)+ 1/2O2(gas)forms SO3(g)Delta H = -99.1 kJ.Given the above data, calculate the enthalpy change when 89.6 g of SO2 is
1. 1 answer
2. asked by lavonne
3. 3,726 views
It takes 51.0 j to raise the temperature of an 8.60 g piece of unknown metal from 13.0 C to 25.0 C. What is the specific heat
1. 2 answers
2. asked by Anonymous
3. 3,589 views
what is the comparative and superlative form of independent
1. 2 answers
2. asked by tearrany
3. 3,197 views
Why did Airhead eat the dollar he brought to school
1. 13 answers
2. asked by Valerie
3. 3,155 views
the thin lens equation in physics is 1/s+1/S=1/f where s is the object distance from the lens,S is the image distance from the
1. 2 answers
2. asked by roslin
3. 3,116 views
A baseball is thrown at an angle of 25 degrees relative to the ground at a speed of 23.0 m/s. If the ball was caught 42.0 m from
1. 1 answer
2. asked by Luis
3. 2,849 views
λ for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value
1. 1 answer
2. asked by Toni
3. 2,220 views
what are the possible advantages and disadvantages of using least common denominator when adding and subtracting fractions?
1. 1 answer
2. asked by m
3. 2,167 views
A 625-kg racing car completes one lap in 14.3 s around a circular track with a radius of 55.0 m. The car moves at constant
1. 2 answers
2. asked by rachel
3. 2,064 views
I have to tell if the verb is transitive or intransitive1. Most people think of Bamboo as a tree or bush? 2. Bamboo belong to
1. 8 answers
2. asked by Ty
3. 2,020 views
The burning candleA candle is placed a distance l1 from a thin block of wood of height H. The block is a distance l2 from a wall
1. 1 answer
2. asked by Fee
3. 1,838 views
3. Many senators opposed American entry into the League of Nations becausea. they feared it would weaken the country's
1. 3 answers
2. asked by mysterychicken
3. 1,784 views
The equilibrium constant for the conversion of cis-stilbene to trans-stilbene is Kc = 24.0 at 200 C. If cis-stilbene is placed
1. 1 answer
2. asked by Elleni
3. 1,747 views
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron
1. 0 answers
2. asked by Don
3. 1,737 views
One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be
1. 1 answer
2. asked by Jim
3. 1,716 views
Two identical 0.18 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an
1. 1 answer
2. asked by Anonymous
3. 1,637 views
Three charged objects are located t the vertices of a right triangle. Charge A (5*10^-6) has Cartesian coordinates (0,4; Charge
1. 2 answers
2. asked by Anonymous
3. 1,604 views
The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 800
1. 1 answer
2. asked by Petrik
3. 1,480 views
the three angles of a triangle are 3x,x+10, and 2x-40. Find the size of the smallest angle in a triangle
1. 2 answers
2. asked by miles
3. 1,460 views
a runner in the starting blocks is it a potential energy or a kinetic energy?
1. 3 answers
2. asked by Vanessa
3. 1,449 views
Howard the soda jerk at Bea's diner slides a 0.60-kg root beer from the end of the counter to a thr=irst customer. A force of
1. 1 answer
2. asked by Anonymous
3. 1,444 views
If the pressure on a 1.04 L sample of gas is doubled at the constant temperature, what will be the new volume of the gas?
1. 1 answer
2. asked by Britt
3. 1,434 views
The centers of a 13 kg lead ball and a 130 g lead ball are separated by 5.0 cm.What gravitational force does each exert on the
1. 2 answers
2. asked by mike
3. 1,414 views
If W1,w2,w3 are independent vectors, show that the sums V1=W2+W3, V2=W1+W3 and V3=W1+W2 are independent . (Write
1. 0 answers
2. asked by traxx
3. 1,350 views
the Laplace transform of e^4t(cos 2t)??please i need help. thanks
1. 2 answers
2. asked by jimmy
3. 1,349 views
Find the equation of the normal to the curve f(x) = 3cos(2x) at the point x = 0.In class, we learnt to find the derivate of the
1. 0 answers
2. asked by cel
3. 1,348 views
ë for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value
1. 1 answer
2. asked by sarah
3. 1,315 views
Determine the values of Kc that correspond to the following values of Kp(a) SO2Cl2(g)--->SO2(g) + Cl2(g) Kp= 2.9 x 10^-2 at 303
1. 1 answer
2. asked by Shanice
3. 1,307 views
Earth, Jupiter, and Uranus all revolve around the sun. Earth takes 1 yr, Jupiter 12 yr, Saturn 30 yr, and Uranus 84 yr to make a
1. 2 answers
2. asked by JESSICA
3. 1,300 views
The birth weight of childeren were 7 pounds 2 ounces, 6 pounds 10 ounces, 8 pounds 5 ounces, 7 pounds 9 ounces. Luis estiamted
1. 3 answers
2. asked by Aly
3. 1,293 views
american and japanese workers can each produce 4 cars a year.An American worker can produce 10 tons of grain a year,whereas a
1. 0 answers
2. asked by luther
3. 1,281 views
A buffer solution contains 0.200 M NH3 and 0.250 M NH4Cl. What is the pH of the buffer solution after the addition of 10.0 mL of
1. 0 answers
2. asked by Brett
3. 1,263 views
A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.600 m.
1. 2 answers
2. asked by Blake
3. 1,247 views
Hurricanes can involve winds in excess of 120 km/h at the outer edge.Make a crude estimate of the energy of such a hurricane,
1. 1 answer
2. asked by Mary
3. 1,245 views
Determine Kc at 298 K for the reaction 1/2 N2(g0 + 1/2 O2(g) + 1/2 Cl2(g)--> NOCl(g), given the following data at 298 K1/2 N2(g)
1. 3 answers
2. asked by Jalisa
3. 1,233 views
Find the differential dy and evaluate dy for the given values of x and dx.y=cosx x=pi/3 dx=0.05 2) y=e^x/10, x=0, dx=0.1 This is
1. 0 answers
2. asked by kelli
3. 1,228 views
Why did the French and Spanish startfighting?
1. 7 answers
2. asked by Anjali
3. 1,194 views
If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the
1. 0 answers
2. asked by George
3. 1,191 views
in act 3 of Mactbeth, what value does Macbeth put on his soul?
1. 1 answer
2. asked by 19
3. 1,184 views
A mechanic pushes a 2.0 103 kg car from rest to a speed of v, doing 5350 J of work in the process. During this time, the car
1. 1 answer
2. asked by hpj
3. 1,183 views
A 21-year old brother of a person with insulin-dependent diabetes mellitus experienced increased urination and thirst for 6
1. 0 answers
2. asked by Anonymous
3. 1,148 views
Need help with factoring this problem. Just want to make sure I followed the right steps.X^3-2X^2-X+2 there are four terms so i
1. 1 answer
2. asked by lomas
3. 1,130 views
A landscape architect wishes to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three
1. 0 answers
2. asked by Anonymous
3. 1,105 views
what is the name for the compound Al2I3??
1. 1 answer
2. asked by Rebecca
3. 1,101 views
what volume in Liters of 0.15M KCl solution is required to completely react with 0.150 liter of a 0.175M Pb(NO3)2 solution
1. 1 answer
2. asked by mike
3. 1,099 views
When a ball is thrown straight down from the top of a tall building, with initial velocity 30 ft/sec, the distance from the
1. 0 answers
2. asked by Leanna
3. 1,093 views
The electric motor of a model train accelerates the train from rest to 0.640 m/s in 19.0 ms. The total mass of the train is 875
1. 2 answers
2. asked by kk
3. 1,091 views
Ethylene glycol (antifreeze) has a specific heat of 2.42 J/(g*K). Calculate q when 3.65 kg of ethylene glycol cools from 240
1. 3 answers
2. asked by Tara
3. 1,091 views
Most populated U.S citiesCity Population(millions) New york - 8.10 Los Angeles - 3.85 Chicago - 2.86 Houston - 2 01 Between
1. 3 answers
2. asked by Aly
3. 1,081 views
1. Do you do any volunteer work?How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do
1. 1 answer
2. asked by rfvv
3. 1,071 views
having trouble factoring this particular problemx^2-12x+36-49y2 factored by grouping x(x-12) (7y-6) (7y+6) the answer in the
1. 2 answers
2. asked by lomas
3. 1,066 views
What is the structure of chromatin?
1. 0 answers
2. asked by Nancy
3. 1,048 views
If AB is the same length as CD, BC is 2 cm shorter than AB and BE is 7 cm in length, find the length of AB.
1. 1 answer
2. asked by Victoria
3. 1,036 views
For the reaction SO3(g)---> SO2(g) + 1/2 O2(g), Kc= 16.7 at 1000 K. What is the value of Kc at 1000 K for the reaction2 SO2 (g)
1. 1 answer
2. asked by Jalisa
3. 1,033 views
Suppose that 8% of a certain batch of calculators have a defective case, and that 11% have defective batteries. Also, 3% have
1. 0 answers
2. asked by Tatjana
3. 1,025 views
What are the rules involved when using this type of formatting?How did the formatting of those messages affect their level of
1. 1 answer
2. asked by Paul
3. 1,025 views
How do you write these sentences in le passe compose?*Catherine la voit. *Le coiffeur les coupe. (les refers to les pommes) et
1. 1 answer
2. asked by Kody
3. 1,018 views
A 275g ball is resting on top of the spring that is mounted on the floor. You exert a force of 325N on the ball and it
1. 2 answers
2. asked by Anonymous
3. 1,009 views
A 4111.0 kg truck is parked on a 14.6° slope. What is the friction force on the truck?
1. 2 answers
2. asked by CATS
3. 1,001 views
A woman has a mass of 42.9 kg. What is her weight on earth? and what is her weight on the moon, where g=1.17 m/s2
1. 1 answer
2. asked by Jason
3. 1,001 views
In a triangle ABC, angle B is three times angle A and angle C is 1 less than 6 times angle A. Find the size of angle A, B, C
1. 2 answers
2. asked by Amy
3. 988 views
I need to create a political cartoon about clinical trials. I have no idea what to do. Any suggestions would be greatly
1. 0 answers
2. asked by Meghan
3. 985 views
Data: C(graphite) + O2(g) forms CO2 (ga) Delta H = -393.5kJH2(g) + 1/2O2(g) forms H2O(l)Delta H = 285.8kJ. CH3OH(l) +
1. 1 answer
2. asked by lavonne
3. 978 views
The O−H bond enthalpy is 463 kJ/mol. What is the wavelength of light that will cause dissociation of H2O into the hydrogen
1. 1 answer
2. asked by Sara
3. 972 views
Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the
1. 4 answers
2. asked by Anonymous
3. 968 views
I have to Draw 4 examples of the 6 principles of art. I have no idea what she is asking me to do. I can make dots all day but I
1. 2 answers
2. asked by Mary
3. 967 views
I have to answer these questions in a few sentences, but I can't figure the first one out. Different websites tell me different
1. 3 answers
2. asked by y912f
3. 962 views
Religious discrimination against Muslims and Arab-appearance people rose steeply in the United States after 9/11. Consider the
1. 1 answer
2. asked by Anonymous
3. 958 views
Arrange the following atoms in order of increasing effective nuclear charge experienced by the electrons in the n = 3 electron
1. 0 answers
2. asked by Don
3. 948 views
Find the linear approximation L(x) of the given function at a, and use it to approximate the function value at the given
1. 0 answers
2. asked by sh
3. 930 views
How would u use grammar in the future: pronoun, adjectives, verbs, and subject. I know how to use them just don't know how to
1. 1 answer
2. asked by Anonymous
3. 926 views
When a ball is thrown straight down from the top of a tall building, with initial velocity 30 ft/sec, the distance from the
1. 1 answer
2. asked by Leanna
3. 924 views
Meg's pension plan is an annuity with a guaranteed return of 7% interest per year (compounded monthly). She would like to retire
1. 0 answers
2. asked by liz
3. 923 views
terri makes flower bouquets with exactly 3 roses and 5 daisies in each bouquet. she has 72 roses. how many daisies will she need
1. 2 answers
2. asked by lasean
3. 923 views
A 3.0-kg body is initially moving northward at 15 m/s. Then a force of 15 N,toward the east, acts on it for 4.0 s. (a) At the
1. 0 answers
2. asked by thomas
3. 904 views
What is an advantage and disadvantage of the Incentive Motivational Theory in Psych?
1. 0 answers
2. asked by Jake
3. 899 views
A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of
1. 0 answers
2. asked by caroline
3. 896 views
Write balanced equations for the following reactions.Express your answer as a chemical equation. Identify all of the phases in
1. 1 answer
2. asked by Don
3. 876 views
A 1.00-kg sample of Sb2S3(s) and a 10.0-g sample of H2(g) are allowed to react in a 25.0-L container at 713 K. At equilibrium,
1. 1 answer
2. asked by Shanice
3. 876 views
if the bases are not the same or the exponents why would it not work?
1. 1 answer
2. asked by kayla
3. 863 views
find the parabola whose minimum is at (7,6) rather than the point given in the book.The parabola's equation is y = x2 + ax + b,
1. 2 answers
2. asked by Erika
3. 858 views
A helicopter has two blades (see figure), each of which has a mass of 220 kg and can be approximated as a thin rod of length 6.7
1. 1 answer
2. asked by Claire
3. 855 views
26. What were the major factors which shaped American foreign policy in the period 1890 to 1900? Show how at least one of these
1. 1 answer
2. asked by mysterychicken
3. 847 views
10. Which best describes the Great Migration?a. the increase in European immigration during World War I b. the movement of
1. 1 answer
2. asked by mysterychicken
3. 846 views
Q.17: In the Figure 3.22 find the acceleration of the masses and the tension in the string.
1. 2 answers
2. asked by saad
3. 841 views
Suppose that 8% of a certain batch of calculators have a defective case, and that 11% have defective batteries. Also, 3% have
1. 0 answers
2. asked by Tatjana
3. 839 views
Here is what I've done so far:tinyurl(dot)com/25932b5 ( This is a link, so I put spaces there so I could put it) and here are
1. 8 answers
2. asked by Allyson
3. 832 views
Find parametric equations for the linethrough the point P(2, 9, 4) that is parallel to the plane x + y + z = 6 and perpendicular
1. 0 answers
2. asked by Bob
3. 827 views
Hydrated calcium sulfate contains 55.8% sulfate by mass. Calculate the value for "n".
1. 0 answers
2. asked by Sia
3. 826 views
how you turn decimal to fraction or mixed number?
1. 3 answers
2. asked by nafina
3. 819 views

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