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Questions Asked on October 18, 2011

If you have 320.0 mL of water at 25.00 °C and add 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture?
1. 4 answers
2. asked by Ryan
3. 8,852 views
Assuming equal concentrations , rank these solutions by pH. RbOH(aq), NH3(aq), HF(aq) HBr(aq), Ca(OH)2(aq).I know the most
1. 5 answers
2. asked by Nia
3. 8,341 views
When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is
1. 2 answers
2. asked by ana
3. 7,197 views
The profit p(x) of a cosmetics company , in thousands of dollars,is given by p(x)=-5x^2+400x-2550, where x is the amount spent
1. 3 answers
2. asked by Melissa
3. 5,910 views
It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station in constructed as a
1. 3 answers
2. asked by ....
3. 5,667 views
The height of a ball thrown vertically upward from a rooftop is modelled by y=-5t^2+20t+50 , where h(t) is the ball's height
1. 2 answers
2. asked by Melissa
3. 5,181 views
Melting Snowball: A spherical snowball melts at a rate proportional to its surface area. Show that the rate of change of the
1. 2 answers
2. asked by Eli
3. 4,908 views
calculate the amount of heat required to change 5 pounds of ice at 32 degrees to water 32 degrees
1. 2 answers
2. asked by miguel
3. 4,836 views
A hockey puck slides across the ice at a con-stant speed. Which of the following is true? 1. The puck is moving and thus not in
1. 4 answers
2. asked by BOB
3. 4,249 views
Selecting concrete words22. we have found that young men are best for this work. 23. She makes good grades 24. John lost a
1. 10 answers
2. asked by efi
3. 4,006 views
A particle, initially at rest, moves along the x-axis such that its acceleration at time t>0 is given by a(t)=cos(t). At the
1. 5 answers
2. asked by Anonymous
3. 2,987 views
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the
1. 2 answers
2. asked by jones
3. 2,961 views
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The
1. 4 answers
2. asked by Joy Chapman
3. 2,821 views
How many moles of gas must be forced into a 3.5 L ball to give it a gauge pressure of 9.4 psi at 25 degrees C? The gauge
1. 4 answers
2. asked by Monique
3. 2,727 views
Assuming that the regression equation for the relationship between IQ score and psychology exam score is Y' = 9+ 0.274X, what
1. 4 answers
2. asked by Joy Chapman
3. 2,685 views
I need to find f24. I know F23=28657 and f25=75025. I have figured out that F24 is 46368 using F(n)=F(n-1)+F(n-2).My problme is
1. 4 answers
2. asked by Rachel
3. 2,625 views
How do you calculate how long will it take an object dropped from a window to fall a distance of 78.4 meters?
1. 3 answers
2. asked by eric
3. 2,550 views
Suppose for the reaction of Cu(NO3)2 + NaOH, you have not added enough sodium hydroxide to precipitate all the copper as copper
1. 4 answers
2. asked by Jessica
3. 2,540 views
Sally has three times as many dimes as nickels and twice as many quarters as dimes.In all she has $5.55. How many coins of each
1. 4 answers
2. asked by Tiffany
3. 2,425 views
1) the odometer on your car reads20,186.7 after going 62.3 miles. write and solve an equation to determoine how many miles were
1. 4 answers
2. asked by marko
3. 2,398 views
Beginning with the ideal gas equation show how density of a vapor may be determined?I have so far: n = (PV)/(RT) d= m/V n= m/MW
1. 2 answers
2. asked by Heidi
3. 2,226 views
Calculate the mean, median, and mode for the following data set. Is the distribution normal or skewed? If its skewed, is it
1. 3 answers
2. asked by Joy Chapman
3. 2,217 views
Near shore, larger sand and gravel particles are moved along the ocean bottom by ____.a. deposition b. turbulence c. spits d.
1. 7 answers
2. asked by Leigh
3. 2,075 views
if x=4 tan theta, express cos(2 theta) as a function of x
1. 2 answers
2. asked by Lisa
3. 2,045 views
In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their stress level
1. 1 answer
2. asked by Joy Chapman
3. 1,801 views
0.7g of an unknown mixture of NaHCO3 and Na2CO3 is mixed with 3mL of 12M HCl.what is the mass of NaHCO3 and Na2CO3 in the
1. 1 answer
2. asked by Deanna
3. 1,800 views
Mom served apple pie. John ate 1/2 of the pie. Thomas ate 1/4 of the pie. How much of the pie was eaten? How Much of the pie is
1. 2 answers
2. asked by Kris
3. 1,786 views
At 7.35 cents per kiloway hr, A. what does it cost to operate a 10.0 hp motor for 8.00 hr? B. What does it cost to leave a 75W
1. 3 answers
2. asked by Micah
3. 1,705 views
A person standing close to the edge on the top of a 160-foot building throws a baseball vertically upward. The quadratic
1. 1 answer
2. asked by Nicole
3. 1,674 views
A baseball has a mass of .145 kilograms. A pitcher's fastball travels at 42 m/s. How much force is applied to the ball if the
1. 1 answer
2. asked by Yuki
3. 1,605 views
The mass of a bag of sand was 2.95 kilograms when it was 2/3 full. When 1/6 of the sand was removed, the mass of the bag of sand
1. 5 answers
2. asked by Christian
3. 1,565 views
from the top of 90 meters high building it is observe that the top of another building make a 40 degree angle depression. if two
1. 2 answers
2. asked by jayson austria
3. 1,564 views
who won the battles of Lexington and Concord? were the armies evenly matched? explain.
1. 2 answers
2. asked by Jackson
3. 1,547 views
The secret number has a 7 in the ones place.The tens number is an odd number.
1. 7 answers
2. asked by mary
3. 1,516 views
Exercise Guideline:Assume that your readers are at about the 10th grade level in education. Revise these sentences for easy
1. 7 answers
2. asked by efi
3. 1,506 views
What pb2+ concentration should be maintained in PbNO3 to produce a solubility of 1.7×10−4 PbI2/L when PbI2 is added?I found
1. 2 answers
2. asked by Anonymous
3. 1,503 views
Limiting use of Passive voice.1. Our action is based on the assumption that the competition will be taken by surprise. 2. It is
1. 3 answers
2. asked by efi
3. 1,497 views
whats the lowest common denominator LCD with x^2-25 and x+5
1. 2 answers
2. asked by Clark
3. 1,455 views
luke added 429+699+314 and got 950 is this sum reasonable?
1. 11 answers
2. asked by esha
3. 1,425 views
The captain of a ship at sea sights a lighthouse which is 260 feet tall.The captain measures the the angle of elevation to the
1. 1 answer
2. asked by Vanessa
3. 1,412 views
1. (Points: 2)The lawyer had been involved in several (elicit, illicit) activities. b. illicit 2. (Points: 2) When people
1. 4 answers
2. asked by HM
3. 1,399 views
An unknown organic compound that contains carbon,hydrogen and oxygen undergoes a combustion analysis. What happen to the carbon
1. 1 answer
2. asked by Anonymous
3. 1,377 views
A 2200 kg car is travelling at 45 km per hour when its brakes are applied and it skids to a stop. If the coefficient of friction
1. 2 answers
2. asked by tom
3. 1,372 views
In figure, the mass m2 = 10 kg slides on a frictionless shelf. The coefficients of static and kinetic friction between m2 and m1
1. 0 answers
2. asked by Eric
3. 1,348 views
. A boat is travelling on a bearing of 25° east of north at a speed of 5 knots (aknot is 1.852 km/h). After travelling for 3
1. 2 answers
2. asked by mahesh
3. 1,305 views
Why did the Tokugawa shogunate keep Japan isolated from 1603 until 1853?
1. 3 answers
2. asked by toneyaa
3. 1,275 views
how did the atlantic slave trade reflect the times during which it existed?
1. 2 answers
2. asked by Keithrie
3. 1,263 views
I asked my teacher for a hint and he said that the pitcher's mound is not the radius. Am I supposed to assume that a side of a
1. 2 answers
2. asked by susan
3. 1,263 views
You have 250 mL of a 0.80 M solution of silver nitrate AgNO3 (169.87 g/mol) dissolved in water. How many grams of AgNO3 does the
1. 2 answers
2. asked by sara
3. 1,242 views
If the tangent line to y = f(x) at (4, 3) passes through the point (0, 2), find f(4) and f'(4).
1. 1 answer
2. asked by Jake
3. 1,212 views
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 120 kg and radius R = 80 cm. The engine
1. 0 answers
2. asked by Temi
3. 1,178 views
What were some of the problems the colonist faced in jamestown
1. 9 answers
2. asked by rashawn
3. 1,178 views
Consider a 0.80M solution of HCN. The Ka of HCN is 6.2x10-10. What are the major species in solution? Calculate the pH of this
1. 1 answer
2. asked by Kevin
3. 1,177 views
Reasonnablenes the flag that Nico waves has an odd number in the ones place and even number in the tens place.what flag does he
1. 4 answers
2. asked by mary
3. 1,163 views
of the forms used in a child care program which of the following would be required for the children?
1. 1 answer
2. asked by laura
3. 1,151 views
evaluate the following and write the answer in scientific notation (6x10^-5:(5x10^-8)
1. 1 answer
2. asked by tracy
3. 1,150 views
Organize the data into a class interval frequency distribution using 10 intervals with frequency (f) and relative frequency
1. 0 answers
2. asked by Joy Chapman
3. 1,129 views
At the airport, you pull a 18 kg suitcase across the floor with a strap that is at an angle of 41° above the horizontal. Find
1. 0 answers
2. asked by Jessica
3. 1,101 views
One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is
1. 1 answer
2. asked by Anonymous
3. 1,100 views
Smith is a weld inspector at a shipyard. He know from keeping track of good and substandard welds that for the afternoon shift
1. 1 answer
2. asked by ashley
3. 1,088 views
how did the atlantic slave trade reflect the times during which it existed?
1. 1 answer
2. asked by Keithrie
3. 1,081 views
In a 1.0x10^-6 M soltution of HNO3(aq), identify the relative molar amounts of these species.H2O , HNO3, H3O+,NO3-, OH-
1. 2 answers
2. asked by Alexis Moran
3. 1,080 views
what me llamo vega juan es mi nombre y vegaes mi mean
1. 3 answers
2. asked by Anonymous
3. 1,069 views
You see I have this weekly assignment for english which is a journal entry. Every week on monday she gives us a a journal entry
1. 17 answers
2. asked by Laruen
3. 1,065 views
Determine the frequency of light with a wavelength of 3.728 × 10−7 cm. Answer in units of Hz Given the speed of light as 3.0
1. 3 answers
2. asked by Mariah
3. 1,048 views
A rolling ball has an initial velocity of 1.6 m/s if the ball has a constant acceleration of .33 what is the velocity after 3.6
1. 0 answers
2. asked by JJJ
3. 1,031 views
What color does iodine turn into if starch is present?
1. 2 answers
2. asked by Izzy
3. 1,026 views
One end of a cord is fixed and a small 0.300 kg object is attached to the other end, where it swings in a section of a vertical
1. 1 answer
2. asked by carlton
3. 1,025 views
A solid and a hollow ball, each with a mass of 1 kg and radius of 0.1 m, start from rest and roll down a ramp of length 3 m at
1. 0 answers
2. asked by Temi
3. 1,018 views
what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A
1. 3 answers
2. asked by HELP ME!!!!
3. 1,015 views
In a 1.0x10^-6 M soltution of HNO3(aq), identify the relative molar amounts of these species.H2O , HNO3, H3O+,NO3-, OH-
1. 2 answers
2. asked by Alexis Moran
3. 1,012 views
evaluate and write in the solution in scientific notation 3x10^5\1.5x10^3
1. 3 answers
2. asked by tracy
3. 992 views
How would I go about making my thesis statement less vague and more percise?Developing Healthy Eating habits along with exercise
1. 5 answers
2. asked by Sade C
3. 982 views
WHAT EVENTS LED UP TO THE BOSTON TEA PARTY
1. 1 answer
2. asked by Jackson
3. 980 views
Factor the polynomial by pulling out the GCF6r^2+12r-15
1. 1 answer
2. asked by Lauren
3. 980 views
A water-park slide covers 100 feet of horizontal space and is 36 feet high. A new replacement slide will create an angle with
1. 1 answer
2. asked by Parker
3. 974 views
A 1,225-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 8,500-kg
1. 0 answers
2. asked by Anonymous
3. 971 views
In loading a fish delivery truck, a person pushes a block of ice up a 200 incline at constant speed. The push is 150N in
1. 2 answers
2. asked by Yuki
3. 965 views
What make the Spanish go to coast ofmexico?
1. 1 answer
2. asked by stephanie
3. 961 views
Assuming equal concentrations , rank these solutions by pH. RbOH(aq), NH3(aq), HF(aq) HBr(aq), Ca(OH)2(aq).
1. 1 answer
2. asked by Nia
3. 961 views
Find lim x->1+ of [(1/(x-1))-(1/lnx)].Here is my work... =(lnx-(x-1)) / ((x-1)(lnx)) =(lnx-1) / (lnx+ (x+1)/x) This becomes(1/x)
1. 1 answer
2. asked by Anonymous
3. 946 views
An unknown compound contains carbon, hydrogen, and oxygen. When burned, a 2.000 gram sample of this compound releases 3.451 g of
1. 6 answers
2. asked by Mom
3. 945 views
What happens to the hydroxide ion concentration in aqueous solutions when we increase the hydrogen ion concentration by adding
1. 1 answer
2. asked by Kevin
3. 942 views
n^2+8n+12factoring
1. 1 answer
2. asked by traci
3. 930 views
1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the
1. 1 answer
2. asked by mimi
3. 925 views
what kind of plants have life cycle that last several years?
1. 0 answers
2. asked by jasmine
3. 896 views
In some breeds of dogs, a dominant gene B controls the trait of barking. If a breeder wants to produce a true-breeding strain of
1. 1 answer
2. asked by Nyo
3. 895 views
Why did the canadian government feel the need to control the economy, transportation and trade after war was declared in 1914?
1. 1 answer
2. asked by John
3. 891 views
Find the cubic function of the form y=ax^3 + bx^2 + cx + d which has a relative maximum point at (0,2) and a point of inflection
1. 1 answer
2. asked by Anonymous
3. 891 views
How does this sound for a theses statement?Healthier Eating habits along with exercise help us maintain a healthy weight and
1. 1 answer
2. asked by Sade C
3. 882 views
You have 200 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the
1. 0 answers
2. asked by Cassidy
3. 880 views
Helen has$1.35 in her bank in nickels and dimes. There are 9 more nickels than dimes. Find the number she has of each kind.
1. 3 answers
2. asked by Tiffany
3. 878 views
evaluate and write the answer in scientific notation (4x10^5):(2.5x10^8)
1. 1 answer
2. asked by tracy
3. 871 views
what effect would using fsr too much water to dissolve salt in water have on the results of a sand salt lab
1. 1 answer
2. asked by Anonymouse
3. 869 views
After 5 days, a particular radioactive substance decays to 37% of its original amount. Find the half life of this substance.Is
1. 1 answer
2. asked by Christine
3. 856 views
A 2.5 wood block is pulled along a wood floor at a steady speed. A second wood block, with mass 3.5 , is attached to the first
1. 3 answers
2. asked by Hello
3. 843 views
A 3.000 gram sample of an unknown compound containing the elements carbon, hydrogen, and nitrogen is analyzed by combustion. The
1. 1 answer
2. asked by Mom
3. 837 views
The graph of sinx and cosx intersect once between 0 and pi/2. What is the angle between the two curves at the point where they
1. 1 answer
2. asked by Sara
3. 833 views
I have a project over hydroelectric energy. My partner and I have looked through books and the Internet to find out what other
1. 0 answers
2. asked by Bella
3. 826 views
Draw a scatterplot indicating a strong negative relationship between the variables of income and mental illness. Be sure to
1. 3 answers
2. asked by Joy Chapman
3. 824 views

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