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2012
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Questions Asked on February 17, 2012

at 25C and 795 torr, carbon dioxide has a solubility of 0.0356 M in water. What is the solubility at 25 C and 2070 torr? ____ MI
1. 3 answers
2. asked by David
3. 13,180 views
What volume does 16.0g of o2 occupy at stp
1. 4 answers
2. asked by ricardo
3. 9,808 views
what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?
1. 1 answer
2. asked by zoryana
3. 7,972 views
The equation V=1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation
1. 9 answers
2. asked by Ann
3. 7,863 views
A 3-kg stone is dropped from a height of 100 m. Find its kinetic and potential energies when it is 50 m from the ground.
1. 2 answers
2. asked by Jessica
3. 6,911 views
An unknown salt is either KBr, NH4Cl, KCN, or K2CO3. If a 0.100 M solution of the salt is neutral, what is the identity of the
1. 1 answer
2. asked by MARY
3. 5,902 views
A slingshot consists of a light leather cupattached between two rubber bands. It takes a force of 25 N to stretch the bands 1.1
1. 2 answers
2. asked by Ashley
3. 5,162 views
A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the
1. 2 answers
2. asked by Daniel
3. 3,920 views
two unknown resistors a and b are connected together. when they are connected in series their combined resistance is 15 ohm.
1. 1 answer
2. asked by fatih
3. 3,883 views
Calculate the pH of a solution made by adding 3.50 g of lithium oxide (Li2O) to enough water to make 1.290 L of solution. (Kw =
1. 1 answer
2. asked by Stanley3000
3. 3,518 views
a 100 V DC signal is applied to four resistors as shown in Fig. 5. The values of the resistors are 20 ohm, 40 ohm, 60 ohm and 80
1. 3 answers
2. asked by fatih
3. 3,433 views
Luis has a coin that is weighted so that the probability that Heads appears when it is tossed is 0.55. Suppose that the coin is
1. 1 answer
2. asked by sajid
3. 3,409 views
Among first year students at a certain university, scores on the Verbal SAT follow the normal curve; the average is around 550
1. 2 answers
2. asked by Elise
3. 3,151 views
How many milliliters of .100 M HNO3 are needed to neutralize 58.5 mL of .0100 Al(0H)3?
1. 2 answers
2. asked by Emily
3. 3,140 views
Calcium Hydride reacts with water to produce hydrogen gas:CaH2(s) + H2O (l)---> Ca(OH)2 (aq) + H2 This reaction is sometimes
1. 2 answers
2. asked by danielle
3. 2,896 views
Suppose the final exam scores in a large class is symmetric mound shaped with a mean of 70 points and standard deviation of 10
1. 2 answers
2. asked by Anonymous
3. 2,887 views
if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of
1. 4 answers
2. asked by Savannah
3. 2,832 views
You have 20 grams of phosphorus-32 that decays 5% per day. How long will it take for hlaf of the original amount to decay?
1. 3 answers
2. asked by Peter
3. 2,804 views
53. A 60-foot drawbridge is 24 feet above water level when closed. When opened the bridge makes an angle of 33 degrees with the
1. 7 answers
2. asked by Anonymous
3. 2,786 views
The body of a 1297 kg car is supported on a frame by four springs. The spring constant ofa single spring is 1.24 × 10 4 N/m.
1. 2 answers
2. asked by Angel
3. 2,719 views
Find an equation of the line containing the points (-6,19) and (-15,28)
1. 2 answers
2. asked by Diana
3. 2,693 views
At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution
1. 1 answer
2. asked by Tracy
3. 2,590 views
3Ag(s)+4HNO3(aq)-->3AgNO3(aq)+NO(g)+2H2O(l)Write the net ionic equation.
1. 1 answer
2. asked by Alex
3. 2,515 views
How much Ca(OH)2 is required to remove 90.0% of PO4^-3 from 7.5 times 10^6 L of drinking water containing 25 mg/l of PO4^-3?
1. 1 answer
2. asked by Emily
3. 2,336 views
in triangle ABC, the size of angle B is 5 times the size of angle A and the size of angle C is 9 degrees less than 4 times the
1. 2 answers
2. asked by Anonymous- boy
3. 2,235 views
A chemist needs to mix an 18% acid solution with a 45% acid solution to obtain a 12 liter mixture consisting of 36% acid. How
1. 1 answer
2. asked by Yakima
3. 2,173 views
1. A car starts from rest and accelerates uniformly at 3.0 m/s2. A second car starts from rest 6.0 s later at thesame point and
1. 2 answers
2. asked by G
3. 2,170 views
NaCl+H2SO4Write the balanced net ionic equation.
1. 1 answer
2. asked by Alex
3. 2,115 views
When a mass of 21 g is attached to a certainspring, it makes 16 complete vibrations in 4.4 s. What is the spring constant of the
1. 1 answer
2. asked by Joanne
3. 2,110 views
Which Reconstruction plan divided the South into military districts?Choices are: A. the 100% plan B. Johnson's plan C. Lincoln's
1. 2 answers
2. asked by Samantha
3. 2,064 views
ok I am a fraction.Iam greater than 1/5 and less than 1/3.My numerator is a on.What fraction am i?
1. 4 answers
2. asked by Kasey
3. 2,002 views
a boy on a small hill aims his water ballon slingshot horizontally straight horizontally at a second boy hanging from a branch
1. 1 answer
2. asked by Anonymous
3. 1,963 views
The distance between two successive crests ofa certain transverse wave is 1.12 m. Eight crests pass a given point along the
1. 3 answers
2. asked by Ashley
3. 1,925 views
A visitor to a lighthouse wishes to determinethe height of the tower. The visitor ties a spool of thread to a small rock to make
1. 2 answers
2. asked by Ashley
3. 1,913 views
Explain how even though images appear on the retina in two-dimensional space, we are able to perceive objects in
1. 1 answer
2. asked by SIST
3. 1,883 views
If 0.48 g of sulfur are added to 200 g of carbon tetracholoride, and the freezing point of the carbon tetrachloride (Kf=30
1. 3 answers
2. asked by Kelly
3. 1,792 views
The body of a 1290 kg car is supported on aframe by four springs. The spring constant of a single spring is 2.59 × 104 N/m.
1. 2 answers
2. asked by Steve
3. 1,771 views
Translate to an algebric expression. use x and y for variables.four less than a product of two numbers
1. 3 answers
2. asked by Anonymous
3. 1,757 views
The Acme Company has developed a new battery. The engineer in charge claims that the new battery will operate continuously for
1. 1 answer
2. asked by Maria E. S.
3. 1,717 views
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction
1. 1 answer
2. asked by John
3. 1,676 views
The second term of a G.P is 12 more than the first term,given that the common ratio is half of the first term.find the fourt
1. 2 answers
2. asked by Elom Charles
3. 1,660 views
A mass of 0.24 kg is attached to a spring andis set into vibration with a period of 0.15 s. What is the spring constant of the
1. 1 answer
2. asked by Steve
3. 1,522 views
King Kong carries Fay Wray up the 321 m tall Empire State Building. At the top of the skyscraper, Fay Wray’s shoe is knocked
1. 1 answer
2. asked by Rachel
3. 1,507 views
The order of magnitude of the radius of our solar system is 10 to the 13th power meters. the order of magnitude of the radius of
1. 2 answers
2. asked by Marie
3. 1,501 views
Does the amplitude of QRS complex change with the pulse amplitudes? Why or why not?So I think that the amplitude of the QRS
1. 1 answer
2. asked by Sarah
3. 1,465 views
A 1500 wrecking ball hangs from a 16 -long cable. The ball is pulled back until the cable makes an angle of 23.0 with the
1. 1 answer
2. asked by stew
3. 1,433 views
At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 6.30 atm, PB = 7.20 atm, PC = 6.40
1. 3 answers
2. asked by Katie
3. 1,392 views
Which U.S. Constitutional amendment gave former slaves citizenship?Choices are: A. 13th B. 14th C. 15th D. 16th I said A. The
1. 2 answers
2. asked by Samantha
3. 1,367 views
If a chemist titrates 300.0 mL of H2SO4 with a 3.0 M solution of NaOH and requires only 3.4 mL of the base to reach the
1. 1 answer
2. asked by Spacy1996
3. 1,352 views
A lever has a 9-N load 1.5m from the fulcrum. Where should a 0.5N effort force be applied to balance the load?
1. 1 answer
2. asked by Micheal
3. 1,347 views
A water balloon was dropped from a high window and struck its target 3.9 seconds later. If the balloon left the person's hand at
1. 1 answer
2. asked by Rachel
3. 1,347 views
If a chemist titrates 120.0 mL of NaOH with a 5.0 M solution of HCl and requires 56.0 mL of the acid to reach the endpoint, what
1. 2 answers
2. asked by Spacy1996
3. 1,291 views
A farmer has a triangular field with sides that measure 120 yards, 170 yards, and 220 yards. Find the area of the field
1. 1 answer
2. asked by tori
3. 1,289 views
many gases are shipped in high pressure containers. consider a steel tank whose volume is 42.0L and which contains O2 gas at a
1. 1 answer
2. asked by danielle
3. 1,282 views
NaBr+H2SO4Write the balanced net ionic equation.
1. 1 answer
2. asked by Alex
3. 1,262 views
1.In "Paul's Case," why does Paul go to work early?A. He didn't want to get caught skipping school. B. He liked looking at the
1. 7 answers
2. asked by Nick
3. 1,242 views
You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what
1. 1 answer
2. asked by I dont know y no one is helping me :/
3. 1,226 views
A load of 47 N attached to a spring that ishanging vertically stretches the spring 0.22 m. What is the spring constant?
1. 0 answers
2. asked by Joanne
3. 1,225 views
While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can
1. 1 answer
2. asked by GG
3. 1,217 views
A tree is growing at an angle out of the ground, 15°17' from vertical. Standing 10 ft away from the base, the angle to the top
1. 2 answers
2. asked by tori
3. 1,207 views
an experiment was conducted by measuring the change in temperature of solutions after mixing them together.After figuring out
1. 0 answers
2. asked by Rose Bud
3. 1,158 views
For a class play, student tickets cost $2 and adult tickets cost $5. A total os 30 tickets were sold. If the total sales must
1. 1 answer
2. asked by Bob
3. 1,141 views
Chicken Delight claims that 86 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample
1. 2 answers
2. asked by Aracely
3. 1,139 views
Leon bought a 10 speed bicyle on sale for 75% of oringinal price.The sale price was $41 less than the origina lprice. find the
1. 3 answers
2. asked by Anonymous
3. 1,107 views
find the value of k so that the remainder is 5. X^2+8X+17 divided by X+K
1. 3 answers
2. asked by zidane
3. 1,107 views
The boiling point of an aqueous solution is 102.16 C. What is the freezing point?Dr. Bob, If you happen to answer this question,
1. 2 answers
2. asked by Tracy
3. 1,092 views
As I made a few changes, could you please check there paragraphs again?Thank you very much!! 1) In 1660, Parliament invited
1. 1 answer
2. asked by Henry2
3. 1,089 views
A 5.0-kg block is at rest on a horizontal floor. If you push horizontally on the 5.0-kg block with a force of 10.0 N, it just
1. 2 answers
2. asked by Julie
3. 1,079 views
On a map, Town A is 8 km due south of Town B, Town C is 9 km from Town A, and Town C is 3 km from Town B (see figure below).
1. 4 answers
2. asked by tori
3. 1,073 views
A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 33 N to stretch the bands 1.3
1. 1 answer
2. asked by imel
3. 1,051 views
A certain land area is 340,000 square miles, and it holds a population of 63.1 million people.Calculate the population density.
1. 1 answer
2. asked by Liz
3. 1,046 views
What must be the molarity of an acetic acid solution if it has the same percent ionization as 0.150M HC3H5O2 propionic
1. 1 answer
2. asked by Tiana
3. 1,023 views
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in
1. 0 answers
2. asked by Katie
3. 1,015 views
translate into an algebraic expression 47 less than t
1. 5 answers
2. asked by Anonymous
3. 1,013 views
If a chemist titrates 120.0 mL of NaOH with a 5.0 M solution of HCl and requires 56.0 mL of the acid to reach the endpoint, what
1. 1 answer
2. asked by Anonymous
3. 1,013 views
Every 6th customer gets a coupon for juice and every 9th gets a coupon for snacks get a coupon for snacks which customer is the
1. 3 answers
2. asked by Anonymous
3. 993 views
A wheel with a radius of 20 cm is attached to an axle with a radius of 1cm. An effort force of 100 N on the wheel counters a
1. 0 answers
2. asked by Micheal
3. 979 views
Dry ice (solid CO2) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of
1. 1 answer
2. asked by danielle
3. 955 views
A wave traveling in the + x direction has an amplitude of 0.35 m, a speed of 5.2 m/s, and a frequency of 14 Hz. Determine:3.1.
1. 0 answers
2. asked by joe
3. 948 views
How to find the %(W/V) of 134mL of a 0.610 M solution of Mg(OH)2
1. 1 answer
2. asked by chem
3. 946 views
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 5 £gC/m and are
1. 0 answers
2. asked by Long
3. 945 views
I need only part cMars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean
1. 0 answers
2. asked by sara
3. 943 views
A car parked on a hill. The driver starts the car, accelerates until the car is driving at constant speed, drives at constant
1. 0 answers
2. asked by Micheal
3. 942 views
Find any critical numbers of the function. (Enter your answers as a comma-separated list.)g(x) = x^7 − 7x^5 Honestly, I have
1. 2 answers
2. asked by Reza
3. 928 views
A 4.8 kg object is subjected to two forces,F~ 1 = (2.8 N) ˆı + (−2.1 N) ˆ and F~ 2 = (3.3 N) ˆı + (−10 N) ˆ. The
1. 0 answers
2. asked by Evita
3. 928 views
carbon dioxide is a "greenhouse" gas in that it absorbs energy from the sun, causing heating of the atmosphere and eventually
1. 2 answers
2. asked by Rose Bud
3. 918 views
A hose ejects water at a speed of 2m/s through a hole of area 0.01m2.if the water strikes a wall normally,calculate the force on
1. 2 answers
2. asked by mariam
3. 915 views
a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height
1. 0 answers
2. asked by J
3. 912 views
A british company is sending you measurements for a table to build in your factory. The table top must be 50cm x75cm.Your
1. 2 answers
2. asked by Brenna
3. 900 views
suggest a reason for the failure of some of the molecules to diffuse through the semipermeable membrane.
1. 2 answers
2. asked by kelly
3. 900 views
calculate molarity of NaOHin the solution prepared by dissolving its 4g in enough water to form 250ml of this solution ?
1. 2 answers
2. asked by tania
3. 897 views
if gasoline has a density of 0.65g/cm what would the mass of a 34 liter tankful of gasoline in kilograms and weight in pounds
1. 1 answer
2. asked by Anonymous
3. 894 views
5.70 g of NH4Cl is added to 13.3 g of water. Calculate the molality of the solution.
1. 2 answers
2. asked by Heather
3. 871 views
If cosx=4/5, cosy=12/13 in Quad. IV, find sin(x+y)
1. 3 answers
2. asked by Kevin
3. 868 views
How is constructing a perpendicular bisector similar to constructing an angle bisector? How is it different
1. 0 answers
2. asked by Anonymous
3. 845 views
Tell whether a correlation is likely. If it is, tell whether the correlation reflects a casual relationship. Explain your
1. 4 answers
2. asked by Dayana
3. 823 views
Is a trapezoid also a parallelogram?Explain why or why not.
1. 2 answers
2. asked by Isabella
3. 817 views
C2H5OH + 3O2 --> 2CO2 + 3H2OHow many grams of O2 are consumed when 5.86 ml of Ethanol burns completely (the density of C2H5OH is
1. 1 answer
2. asked by Delta
3. 816 views
A mass of 0.40 kg is attached to a spring andis set into vibration with a period of 0.15 s. What is the spring constant of the
1. 2 answers
2. asked by Anonymous
3. 813 views
\Find the distance between points M(6, 16) and Z(–1, 14) to the nearest tenth.Step by Step
1. 1 answer
2. asked by Anonymous
3. 802 views

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