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Questions Asked on July 20, 2013

At 25C only .0190 mol of the generic salt AB2 is soluble in 1.00L of water. What is the Ksp of the salt at 25C?AB2<->A^2+ + 2B^-
1. 1 answer
2. asked by Cat
3. 18,277 views
Company A rents copiers for a monthly charge of $360 plus 12 cents per copy. Company B rents copiers for a monthly charge of
1. 2 answers
2. asked by anna
3. 4,137 views
1. A Ferris wheel with a radius of 7m makes one complete revolution every 16 s. The bottom of the wheel is 1.5m above ground.a)F
1. 4 answers
2. asked by Azal
3. 3,430 views
ABCD is a square. P is a point inside the square, such that AP:BP:CP=1:2:3. What is the value (in degree) of angle APB?
1. 9 answers
2. asked by debjit
3. 2,806 views
On a certain dry sunny day, a swimming pool's temperature would rise by 1.60°C if not for evaporation. What fraction of the
1. 1 answer
2. asked by Alice
3. 2,534 views
In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long,
1. 1 answer
2. asked by Eric
3. 2,365 views
An object suspended from a spring is oscillating up and down. The distance from the high point to the low point is 30 cm, and
1. 1 answer
2. asked by Azal - pleaseee helpp
3. 2,267 views
The area of a rectangle is 72 square inches and the perimeter is 44 inches. Find its dimensions.
1. 2 answers
2. asked by Anonymous
3. 2,075 views
A full can of soda has a mass of 0.421 kg. It contains 3.57 x 10-4 m3 of liquid. Assuming that the soda has the same density as
1. 1 answer
2. asked by please help with these practice problems
3. 2,033 views
Calculate the percent yield for the reaction if 76.8 g of H2O reacted and 125 g of NO were produced.NO2+H2O->HNO3+NO
1. 1 answer
2. asked by Sara
3. 1,622 views
For the past year, Hornbostel Company had fixed costs of $6,552,000, a unit variable cost of $444, and a unit selling price of
1. 2 answers
2. asked by Anonymous
3. 1,612 views
CoCl2<->CO+Cl2Keq=7.6*10^-4 M CoCl2 is introduced in a closed container until its concentration is .890 M. What will be the
1. 1 answer
2. asked by Sara
3. 1,543 views
If fixed costs are $240,000, the unit selling price is $32, and the unit variable costs are $20, what are the old and new
1. 2 answers
2. asked by Anonymous
3. 1,526 views
A fire extinguisher filled with carbon dioxide has a mass of 3500g. After releasing all of theCO2, the mass of the extinguisher
1. 1 answer
2. asked by Anonymous
3. 1,364 views
An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same amount of 0°C water.(a)
1. 1 answer
2. asked by Eric
3. 1,226 views
Calculate how much acetylene (C2H2) can be produced from 358 g of H20 and an excess of CaC2 if the perfect yield for this
1. 1 answer
2. asked by Sara
3. 1,224 views
When the following reaction took place at 23.8 and a pressure of 758 torr, 3.9 L of o2 were collected. What mass of KCIO3
1. 1 answer
2. asked by Sara
3. 1,211 views
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, with the open end
1. 0 answers
2. asked by please help with these practice problems
3. 1,165 views
A sample of oxygen is collected over water at 22 C and 762 torr. What is the partial pressure of the dry oxygen? The vapor
1. 1 answer
2. asked by Sara
3. 1,134 views
A solid concrete block weighs 160 N and is resting on the ground. Its dimensions are 0.400 m x 0.240 m x 0.0950 m. A number of
1. 2 answers
2. asked by please help with these practice problems
3. 1,123 views
The price P per unit at which a company can sell all that it produces is given by thefunction P(x) = 300 — 4x. The cost
1. 1 answer
2. asked by Nitish
3. 1,114 views
I am struggling with deciding which evaluation criteria best fits for writing a critical essay on the passage written by Stephen
1. 0 answers
2. asked by nan
3. 1,089 views
A gas mixture containing N2 and O2 was kept inside a 2 L container at a temperature of 23 C and a total pressure of 1 atm. The
1. 1 answer
2. asked by Sara
3. 1,043 views
a small dog is train to jump straight up a distance of 1.2m. how much kinetic energy does the 7.2-kg dog need to jump this high
1. 2 answers
2. asked by keisha
3. 1,022 views
A sample of oxygen is collected over water at 22 C and 762 torr. What is the partial pressure of the dry oxygen? The vapor
1. 1 answer
2. asked by Sara
3. 1,021 views
If f(x)=∫ (from -x to x) cos(t)/(1+e^t) dt and x=asin(77/85), then the absolute value of f′(x)−f(x) can be expressed as
1. 0 answers
2. asked by andy
3. 989 views
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might
1. 2 answers
2. asked by please help with these practice problems
3. 986 views
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of
1. 2 answers
2. asked by please help with these practice problems
3. 985 views
What is the smallest number of whole logs (ñ = 725 kg/m3, radius = 0.0556 m, length = 3.80 m) that can be used to build a raft
1. 3 answers
2. asked by please help with these practice problems
3. 926 views
Calculate the number of moles of excess reactant that will be left-over when .350 g if HCN react with .500 g of 02:HCN+O2->N2+CO
1. 1 answer
2. asked by Sara
3. 888 views
A 0.25 mol sample of n204 dissociates and comes to equilibrium in a 1.5 L flask at 100 degrees C. The reaction is N2O4 > 2 NO2.
1. 1 answer
2. asked by Marie Genvieve
3. 876 views
For the current year ending April 30, Hal Company expects fixed costs of $60,000, a unit variable cost of $70, and a unit
1. 1 answer
2. asked by Anonymous
3. 869 views
A lighthouse standing on the top of a cliff is observed from two open boats (boats are not decked over) A and B in a vertical
1. 1 answer
2. asked by Romar
3. 850 views
Motorcycle Manufacturers, Inc. projected sales of 76,000 machines for 2012. The estimated January 1, 2012, inventory is 6,500
1. 0 answers
2. asked by Anonymous
3. 834 views
An aqueous solutions is 18.7% by mass Na3PO4. What is the boiling point of this solution? The Kb for water is .512 C/m. Consider
1. 1 answer
2. asked by Sara
3. 817 views
a quiz has 25 questions with 4points awarded for each correct answer and 1 point deducted for each incorrect answer,with zero
1. 1 answer
2. asked by sarah
3. 814 views
The perimeter of a fence is 84 meters. If the width is 2 meters less than the length, find the width
1. 1 answer
2. asked by jerry
3. 796 views
Ryan’s teacher asked him to graph circle E with equation (x – 5)2 + y2 = 25. Below is the graph he submitted.Circle E that
1. 1 answer
2. asked by leroy
3. 773 views
Informational text includes which of the following:a. a setting c. a plot b. a conflict d. an explanation
1. 1 answer
2. asked by Anonymous
3. 737 views
Ok so I have to do a comparative essay on a book and a film (I chose The Hobbit) .This is a comparison essay exploring to what
1. 5 answers
2. asked by Kristen
3. 720 views
In 0.511 s, a 13.1-kg block is pulled through a distance of 3.13 m on a frictionless horizontal surface, starting from rest. The
1. 1 answer
2. asked by Anonymous
3. 705 views
The average temperature for the month of April is 65 degrees. The temperatures ranged from 12 degrees warmer or colder. Write
1. 1 answer
2. asked by rick
3. 680 views
The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.80 g of
1. 0 answers
2. asked by Eric
3. 669 views
How many liters of Cl2 has at a pressure of .950 atm and a temperature of 298K will be collected from the reaction of 25 mL of a
1. 1 answer
2. asked by Sara
3. 665 views
A slab of a thermal insulator with a cross-sectional area of 115 cm2 is 4.00 cm thick. It is made out of red brick with thermal
1. 0 answers
2. asked by Alice
3. 648 views
The area of a rectangle is 72 square inches and the perimeter is 44 inches. Find its dimensions.
1. 1 answer
2. asked by Anonymous
3. 636 views
A thin plastic blanket, with a shiny metallic surface, is wrapped a walker who has collapsed after a steep climb. Which type of
1. 3 answers
2. asked by Michelle
3. 623 views
y=(v/u)x+(g)/(2(u^2))*x^2where y is the object's vertical distance (in feet) above from where it was thrown x is the object's
1. 0 answers
2. asked by Geoff
3. 619 views
Collision derivation problem. A car is released from rest on a frictionless inclined plane. Assume h/L is approximately equal to
1. 2 answers
2. asked by Tiff
3. 609 views
how can full-absorption costing be abused by management to misstate financial results
1. 0 answers
2. asked by Patiance
3. 585 views
The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 7.40 g of
1. 0 answers
2. asked by Eric
3. 577 views
The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.80 g of
1. 0 answers
2. asked by Alice
3. 571 views
as a regular customer in my favourite restaurant,i get 10%discount.but to the cost of the meal must be +17.5%gstand 12%service
1. 1 answer
2. asked by sarah
3. 570 views
At a particular temperature, 12.0 mol of NH3 is introduced into a 2.0 container, and the NH3 partially dissociates by the
1. 1 answer
2. asked by Marie Genvieve
3. 562 views
5 people measured a metal bar using the same measuing instrument,but each read the scale to a different level of accuracy.their
1. 1 answer
2. asked by sarah
3. 544 views
I need help with this please. It is a multiple choice question, so choose one from a,b,c please. I believe the correct is c.
1. 4 answers
2. asked by Andrew
3. 542 views
I need help with this please.A researcher is designing a research study. He hopes to show that the results of an experiment are
1. 2 answers
2. asked by Andrew
3. 524 views
A mixture containing 5 g of H2 and 10 g of o2 is allowed to react in a 15 L rigid container at a constant temperature of 25 C.H2
1. 1 answer
2. asked by Sara
3. 509 views
If f(x)=∫ (from -x to x) cos(t)/(1+e^t) dt and x=asin(77/85), then the absolute value of f′(x)−f(x) can be expressed as
1. 6 answers
2. asked by andy
3. 505 views
True or False.1. If the radicand is a multiple of a perfect square number, then the radical is not in its simplest form. 2. The
1. 1 answer
2. asked by Paula
3. 463 views
use mathematical induction to prove -1/2^n = 1/2^n - 1
1. 1 answer
2. asked by o
3. 444 views
2 people start off to work directly away from each other.they each walk for 4 kms then turn directly to their right and walk for
1. 3 answers
2. asked by sarah
3. 439 views
calculate the Ph of 0.3 M sodium propanoate, Ka 2.0 x 10 base -3. then calculate the pH after 0.03 mol NCL is added to 2L of the
1. 1 answer
2. asked by Mandy
3. 433 views
critical thinking involves being to:
1. 2 answers
2. asked by mek
3. 428 views
-Explain the difference between log base b of m plus log base b of n and log base b (m+n). Are they equivalent?-Explain the
1. 1 answer
2. asked by Anonymous
3. 426 views
Children, family and society
1. 2 answers
2. asked by Tina
3. 406 views
Latchkey children are
1. 1 answer
2. asked by Tina
3. 399 views
The answer to the maths question was: "age>21".Make up a question that could have this as an answer.
1. 3 answers
2. asked by Melissa
3. 381 views
f(x) and f′(x) are continuous, differentiable functions that satisfyf(x)=x^3+4x^2+∫ (from 0 to x)(x−t)f′(t) dt. What is
1. 0 answers
2. asked by andy
3. 371 views
it takes 3weeks to build a large garage.if it takes 2/3 of a week to construct the frame and 5/4 of a week to put the roof
1. 2 answers
2. asked by sarah
3. 369 views
The answer to the maths question was: "age>21".Make up a question that could have this as an answer.
1. 0 answers
2. asked by Melissa
3. 354 views
Ms sue you mean to say its correct ? Is there anything else I write in addition to it or improve what I have written
1. 1 answer
2. asked by kirat
3. 329 views
If f(x)=sin(x)+sin^2(x+60)+cos(x)cos(x+60) and g(5/4)=1 then find g0f
1. 1 answer
2. asked by Anonymous
3. 327 views
Are adventure, revenge, Heroism and prejudice all human conditions?
1. 3 answers
2. asked by Kristen
3. 326 views
solve log(5)(5x-4) = log(√5)(2-x)
1. 2 answers
2. asked by Anonymous
3. 311 views

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