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Questions Asked on December 7, 2010

A gaseous mixture of O2 and N2 contains 30.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the
1. 1 answer
2. asked by chelsey
3. 15,235 views
When four people with a combined mass of 320 kg sit down in a car, they find that the car drops 0.80 cm lower on its springs.
1. 3 answers
2. asked by Y0gi
3. 4,332 views
a company finds it can produce 15 heaters for $4300, while producing 20 heaters costs $5500. Express y, as a linear function of
1. 2 answers
2. asked by Lee
3. 3,554 views
A diver runs horizontally off the end of a diving board with an initial speed of 1.75 sec. If the diving board is 3.0 m above
1. 2 answers
2. asked by Ama
3. 2,926 views
A train on one track moves in the same direction as a second train on the adjacent track. The first train, which is ahead of the
1. 1 answer
2. asked by aok
3. 2,754 views
A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle
1. 1 answer
2. asked by kaitlyn
3. 2,456 views
A 60 dB sound wave strikes an eardrum whose area is 4.1×10^−5 m^2.How much energy is absorbed by the eardrum per second? At
1. 2 answers
2. asked by Eden
3. 2,294 views
Which of the following normal distributions has the smallest spread?A. A normal distribution with mean 1 and standard deviation
1. 1 answer
2. asked by KARINA
3. 2,281 views
How many moles of H+(aq) ions are present in 1.25 L of 0.75M Nitric Acid?A. 0.60 mol B. 0.75 mol C. 0.94 mol D. 1.7 mol E. 1.9
1. 2 answers
2. asked by lavonne
3. 2,251 views
Which is not a ground state electron configuration?A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1
1. 5 answers
2. asked by Ivy
3. 2,223 views
A 0.5962g sample of iron ore is dissolved in acid producing Fe3+. Through a series of reactions, the iron precipitates as the
1. 1 answer
2. asked by Chris
3. 2,167 views
What is the value of the smallest bond angle in XeF4?
1. 1 answer
2. asked by sam
3. 2,050 views
Which quadrilaterals havea)perpendicular diagonals b)opposite angles congruent? c) two pairs of parallel sides? d) a pair of
1. 1 answer
2. asked by m
3. 2,020 views
Palladium-107 undergoes â decay (t1/2 = 6.5 x 105 yr) to form silver-107. How long will it take for 0.150 mol of silver-107 to
1. 2 answers
2. asked by Queen
3. 1,946 views
At 7.0 degrees C, the volume of a gas is 49ml. At the same pressure, its volume is 74 mL at what temperature?
1. 2 answers
2. asked by gary
3. 1,944 views
A 2200-kg sport utility vehicle traveling at 96 km/h can be stopped in 0.21 s if it hits a concrete wall. Assume a 60 kg person
1. 1 answer
2. asked by lets go
3. 1,931 views
at 20 degrees celsius, how much sodium chloride could be dissolved in 2 L of water?
1. 3 answers
2. asked by megan
3. 1,869 views
two identical objects move with speeds of 5.0 m s and 25.0 m s. What is the ratio of their kinetic energies?
1. 2 answers
2. asked by Anonymous
3. 1,830 views
1. Which of the following inequality signs would make a true statement if it replaced the question mark in the followingequation
1. 1 answer
2. asked by student-visitor
3. 1,789 views
A person is driving a car on a straight road. The graph shows the distance in y miles that the individual is from home after x
1. 1 answer
2. asked by Lee
3. 1,785 views
An Urn contains 7 red and 3 white balls. Two balls are drawn in succession without replacement. If the second ball is white,
1. 2 answers
2. asked by Emily
3. 1,784 views
WHAT IS THE BOILING POINT OF THIS SOLUTION?1.00x10^2g C10,H8,O6,S2 (1,5-naphthalenedisulfonic acid) in 1.00x10^2g H2O
1. 2 answers
2. asked by Jose Reyes
3. 1,689 views
A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium undergoes â decay with a
1. 3 answers
2. asked by Queen
3. 1,595 views
A diver runs horizontally off the end of a diving board with an initial speed of 1.25 m/s. If the diving board is 3.20 m above
1. 1 answer
2. asked by amv3WEBASSIGN
3. 1,548 views
What is the mole of oxalic acid?Equation:H2C2O4 + 2NaOH---> Na2C2O4 + 2H2O *Moles of oxalic acid dihydrate is 0.032 mole. *
1. 1 answer
2. asked by Ivy
3. 1,547 views
What is the expected van't Hoff factor for NaC2H3O2 in an aqueous solution, assuming 100% dissociation.
1. 1 answer
2. asked by kyle
3. 1,538 views
What is the molecular weight of a gas if a 21.0g sample has a pressure of 836mm Hg at 25.0 degrees C in a 2.00L flash?
1. 1 answer
2. asked by Shirley
3. 1,494 views
use the graph of f(x) in the graph to find the sign (positive or negative) of dy/dx and d2y/d2x at the points A,B,C, and D
1. 2 answers
2. asked by Anonymous
3. 1,456 views
Please tell me if these are right.1.According to Le Chatelier’s principle, what is the effect on the products when N2 is added
1. 2 answers
2. asked by Carrie
3. 1,424 views
How many molecules are in 15g CH4? How do you figure this out?
1. 1 answer
2. asked by Lauren K.
3. 1,392 views
A compound,KBrOx, is analyzed and found to contain 52.92% Br by mass. What is the value of x?
1. 1 answer
2. asked by anne
3. 1,371 views
A 23.6 molar solution of formic acid (methanoic acid) has a density of 1.16 g/ml. The molar mass of H, C, and O are 1g/mol,
1. 2 answers
2. asked by Eddie
3. 1,363 views
The A string of a violin is 31 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of
1. 2 answers
2. asked by Jake
3. 1,361 views
why didn't young phillip remember verymuch about his former home in virginia?
1. 1 answer
2. asked by felicia
3. 1,343 views
the professinal base ball is 162 games.a player was at bat 3 times in each game, and he played 2/3 of the game.a.how many times
1. 3 answers
2. asked by cindy
3. 1,342 views
one ship (A) is sailing due south at 16 miles per hour and a second ship (B), 32 miles south of A, is sailing due east at 12
1. 1 answer
2. asked by Gabby
3. 1,341 views
I am preparing for my oral exam (spanish 1) and i wrote all this down, can any one check my grammar, conjugations and add-on if
1. 2 answers
2. asked by lauren
3. 1,333 views
A water tank springs a leak. Find the speed of water emerging from the hole if the leak is 2.5 m below the surface of the water,
1. 1 answer
2. asked by aok
3. 1,321 views
A sign is supported at its top right corner, point P. The sign is a square with 40 cm on each side and has 8.0 kg mass. What is
1. 2 answers
2. asked by Steve
3. 1,315 views
What is the mole of oxalic acid?Equation:H2C2O4 + 2NaOH---> Na2C2O4 + 2H2O *Moles of oxalic acid dihydrate is 0.032 mole. *
1. 0 answers
2. asked by Ivy
3. 1,281 views
Can you please tell me if these are right?Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+
1. 1 answer
2. asked by Jessica
3. 1,272 views
two cards are drawn without replacement from an ordinary deck of 52 playing cards. what is the probability that both cards are
1. 4 answers
2. asked by Rena
3. 1,272 views
A 8.5-kg bowling ball is rolling down the alley with a velocity of 3.5 m/s. For each impulse, a and b, as shown below, find the
1. 2 answers
2. asked by lets go
3. 1,245 views
i have 2 questions13. Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter
1. 4 answers
2. asked by Brenda
3. 1,229 views
The natural stride up a certain staircase has a slope of 3/5, meaning that a run of 5 inches has a rise of 3 inches.The model
1. 1 answer
2. asked by chris
3. 1,195 views
Mrs.penn has a circular tablecloth with a circumference of 29 feet. Which expression could be used ro find the radius of the
1. 1 answer
2. asked by dylan
3. 1,195 views
A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initialvolume of H2SO4 was 13.28 and the final volume of H2SO4
1. 1 answer
2. asked by Ivy
3. 1,186 views
What is the minimum downward force on the box ( m=30 kg)that will keep it from slipping? The coefficients of static and kinetic
1. 1 answer
2. asked by vinu
3. 1,160 views
did I do this rightConsider the following reaction at equilibrium N2(g) + O2(g) + heat < = > 2NO(g) Indicate how each of the
1. 3 answers
2. asked by Jason
3. 1,141 views
Choose the correct word to complete each sentence.1. Despite wanting to pass the exam, Julia just couldn't get down to revising.
1. 2 answers
2. asked by Paige
3. 1,125 views
A piano string having a mass per unit length equal to 5.00 „e 10¡V3 kg/m is under a tension of 1 350 N. Find the speed with
1. 2 answers
2. asked by Cf
3. 1,118 views
franklin school has 3 boys for every 4 4 girls in fifth grade . there were 140 students in the fifth grade.A.how many are boys
1. 2 answers
2. asked by cindy
3. 1,103 views
Before 1962,dimes minted in the US contained the precious metal silver.A 2.08 gram dime is dissolved in nitric acid and reacted
1. 0 answers
2. asked by D
3. 1,103 views
A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor
1. 0 answers
2. asked by max
3. 1,100 views
If she made the last free throw, then her probability of making the next one is 0.9. On the other hand, If she missed the last
1. 0 answers
2. asked by Tiff
3. 1,083 views
The problem is my thesis statement. That is the step I am stuck on.
1. 1 answer
2. asked by Kyle
3. 1,074 views
The area of a triangle is 6.75 m squared. If the base of the triangle is 3 m, what is the height of the triangle?
1. 1 answer
2. asked by Mark
3. 1,067 views
As one descends group 6A of the periodic table, the number of valence electronsfound in each element A. Increases B. Decreases
1. 0 answers
2. asked by Jerome
3. 1,054 views
What is the relationship between channels of distribution and logistics? How does geographical location affect your selection of
1. 0 answers
2. asked by Sarah
3. 1,053 views
A ladder 10ft long rests against a vertical wall. If the bottom on the ladder slides away from the wall at 2 ft/s, how fast is
1. 2 answers
2. asked by Tina P
3. 1,051 views
A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor
1. 0 answers
2. asked by max
3. 1,046 views
69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm3 of solution at 20
1. 1 answer
2. asked by Jose Reyes
3. 1,039 views
How do you find the budget constraint given the utility function u = q1^(1/3) + q2
1. 0 answers
2. asked by Terri
3. 1,039 views
There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30s, 35
1. 1 answer
2. asked by Lily
3. 1,039 views
2. Find the general term and 25th term of the sequencesc) 15, 13, 11, 9 ...
1. 3 answers
2. asked by helen
3. 1,036 views
what is the highest freezing point of H2O, NaCl, and HF
1. 0 answers
2. asked by Anonymous
3. 1,036 views
What influences did the colonies have on the imperialist nation
1. 2 answers
2. asked by cheyenne
3. 1,028 views
A loop-the-loop ride at an amusement park has a radius of 5 m. At the highest point, the rider moves at 8 m/s. At the lowest
1. 6 answers
2. asked by Jennifer
3. 1,027 views
A tank of water 3 meters deep sits on a table 1 meter tall. A hole is located 2 meters from the bottom of the tank. Water flows
1. 1 answer
2. asked by Jib
3. 1,024 views
Need a web site on if the International Court of Justice was the first world court and what are the procedures of the world
1. 1 answer
2. asked by TONJA
3. 1,022 views
hmo director wants to know ifmanaged care plan meets industry standared. what is on way to do this?
1. 0 answers
2. asked by Patty
3. 1,021 views
a 2191 kg car moving east at 9.9 m/s collides with a 3221 kg car moving north. the cars stick together and move as a unit after
1. 0 answers
2. asked by jacquie
3. 1,014 views
Alkali metals react with water to form hydrogen gas and the hydroxide of the metal. When 3.55 grams of an alkali metal reacts
1. 1 answer
2. asked by gina
3. 1,010 views
Please tell me if these are right!1.How many milliliters of 0.215 M NaOH solution are needed to completely neutralize 2.50 ml of
1. 1 answer
2. asked by Jessica
3. 1,010 views
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and
1. 0 answers
2. asked by Josh
3. 1,009 views
Multiplying decimals by 3 digit decimals and i don't gget it on example: 34.56x0.40 _______ ?????
1. 1 answer
2. asked by Cristal
3. 993 views
Use the Fundamental Theorem of Calculus to find the area of the region bounded by the x-axis and the graph of y = 4 x3 − 4 x.A
1. 0 answers
2. asked by Erika
3. 989 views
. Do students at various universities differ in how sociable they are? Twenty-fivestudents were randomly selected from each of
1. 1 answer
2. asked by Anonymous
3. 983 views
The gland that helps regulate the endocrine system by secreting stimulating hormones is the____.Thanks for helping!
1. 0 answers
2. asked by Anna
3. 977 views
Maratha bakes between 4 1/4 and 9 3/4 hours each day at her bakery. About how many hours does she spend baking in one week?
1. 0 answers
2. asked by Please Help!
3. 977 views
Please I'm stuck!!!!!A person is driving a car on a straight road. The graph shows the distance in y miles that the individual
1. 0 answers
2. asked by Lee
3. 966 views
A solid sample containing a simple mixture of NaHSO3 and Na2SO3 was dissolved in distilled water and titrated with a standard
1. 0 answers
2. asked by Silver
3. 964 views
what mass of H 2 O is needed to completely react with 5.10g SiCl4
1. 1 answer
2. asked by CHAZ
3. 963 views
As one descends group 6A of the periodic table, the number of valence electronsfound in each element? A. Increases B. Decreases
1. 1 answer
2. asked by Ivy
3. 953 views
Suppose that log2 = a and log3 = bSolve for x in terms of a and b: 6^x = 10/3 - 6^-x
1. 1 answer
2. asked by Jenny
3. 944 views
Find the point on the graph of y=2x-4 that is closest to the point (1,3). (Optimization equation)
1. 1 answer
2. asked by Michelle
3. 941 views
how would you find the answer?A carbon nucleus has six protons and six neutrons. How many electrons would it take to equal the
1. 0 answers
2. asked by hannah
3. 929 views
use the word girls in a sentence
1. 2 answers
2. asked by sha
3. 925 views
Need help on the #13-20.13. What is the quotient of d − 2 ) d 4 − 6d 3 + d + 17 __________________ ? A. d 3 − 4d 2 − 8d
1. 2 answers
2. asked by Emily
3. 921 views
In a tennis serve, a 0.070 kg ball can be accelerated from rest to 35 m/sec over a distance of 0.80 m. find the magnitude of the
1. 1 answer
2. asked by Kay
3. 915 views
1) A 6-ft propeller turns at 1200 revolutions per minute. Compare the angular velocity of the tip with the angular velocity at a
1. 1 answer
2. asked by confused
3. 898 views
A horizontal pipe contains water at a pressure of 108 kPa flowing with a speed of 1.5 m/s. The pipe narrows to one-half its
1. 0 answers
2. asked by aok
3. 894 views
A ball is dropped from a height of 5 ft. Assuming that on each bounce the ball rebounds to one-third of its previous height,
1. 2 answers
2. asked by Mike
3. 892 views
a 4 kg object moving with a speed of 7.8 m/s collides with a 16 kg object moving with a velocity of 7.6 m/s in a direction of 22
1. 1 answer
2. asked by jacquie
3. 883 views
Minimum force required to prevent a ball weighing 29.6 pounds from rolling down a ramp which is inclined 14.9 degrees with the
1. 0 answers
2. asked by Casey Lewis
3. 880 views
Hello,Could someone please help me find the answer to this question: The two largest diner chains in Kansas compete for weekday
1. 1 answer
2. asked by Daniel
3. 877 views
A ball is thrown horizontally off the top of a 67 m tall building at a velocity of 7.3 m/s. How far did the ball land from the
1. 1 answer
2. asked by byung
3. 875 views
There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30s, 35
1. 2 answers
2. asked by Lily
3. 873 views
i need help on some questions:1. How does totalitarian government gain power and maintain power? 2. What kind of freedoms does
1. 1 answer
2. asked by needhelp
3. 871 views
How do you multiply -3/5 by -3 and write it as an improper fraction?
1. 1 answer
2. asked by Alice
3. 862 views

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