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2012
February

Questions Asked on February 24, 2012

The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle?Would the correct answer
1. 3 answers
2. asked by helen
3. 5,275 views
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.35-g
1. 2 answers
2. asked by Anonymous
3. 5,024 views
if 95j of heat is added to a pure gold coin with a mass of 16 grams, what is its temperature change? Specific heat capacity of
1. 2 answers
2. asked by Haley
3. 4,437 views
Separate this redox reaction into its component half-reactions.O2 + 2Zn -->2ZnO
1. 4 answers
2. asked by Anonymous
3. 4,427 views
How many grams of carbon dioxide are produced in C3H8+5O2 -> 3CO2+4H2O
1. 2 answers
2. asked by Lily
3. 4,329 views
. An inquisitive physics student and mountain climber climbs a 50.0-m cliff that overhangs a calm pool of water. He throws two
1. 2 answers
2. asked by ai
3. 4,286 views
Separate this redox reaction into its component half-reactions.Cl2 + 2Na --> 2NaCl
1. 4 answers
2. asked by Anonymous
3. 4,104 views
You ride your bike along a straight line from your house to a store 1030 m away. On your way back, you stop at a friend's house
1. 1 answer
2. asked by MARÝA
3. 3,813 views
two charged bodies exert a force of 86N on each other. If they are moved so that they are 6 times farther apart, what is the new
1. 1 answer
2. asked by Anonymous
3. 3,663 views
You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow.
1. 4 answers
2. asked by helen
3. 3,576 views
A student scored 84 points on a test where the mean score was 79 and the standard deviation was 4. Find the student's z score,
1. 3 answers
2. asked by RGCLARK
3. 3,498 views
You have a 70% dextrose solution. How many grams of dextrose are in 400ml?
1. 3 answers
2. asked by Vicki
3. 3,473 views
Kelly plans to put her graduation money into an account and leave it there for 4 years while she goes to college. She receives
1. 2 answers
2. asked by Anonymous
3. 3,366 views
A blue-eyed man, both of whose parents were brown-eyed, marries a brown-eyed woman whose father was blue-eyed and whose mother
1. 2 answers
2. asked by Rebecca
3. 3,190 views
What is the surface area of a circle that has a diameter of 14 inches?
1. 5 answers
2. asked by isaac
3. 3,060 views
Two men pushing a stalled car generate a net force of +698 N for 7.37 s. What is the final momentum of the car?
1. 2 answers
2. asked by Tom
3. 2,857 views
The Ferris Wheel in the figure below is a vertical, circular amusement ride with radius 10 m. Riders sit on seats that swivel to
1. 1 answer
2. asked by mo
3. 2,849 views
Consider the reaction4KO2(s) + 2CO2(g) ! 2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at
1. 1 answer
2. asked by Stormie
3. 2,718 views
two less than three times a number is equal to 16. what is the number?
1. 3 answers
2. asked by taylor
3. 2,672 views
A farmer with 700 ft of fencing wants to enclose a rectangular area and then divide it into four pens with fencing parallel to
1. 4 answers
2. asked by Grant
3. 2,444 views
the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and
1. 2 answers
2. asked by Rose Bud
3. 2,416 views
the straight L has gradient 3 and passes through the point A(-6,4).a) find an equation for L in the form y=mx+c b) straight line
1. 1 answer
2. asked by aminath
3. 2,294 views
At 1:00 p.m. a car, traveling at a constantvelocity of 86 km/h toward the west, is 22 km to the west of our school. How far from
1. 1 answer
2. asked by Rachel
3. 2,250 views
is the low solubility of KHT a result of an unfavorable delta H or an unfavorable delta S value
1. 1 answer
2. asked by Anonymous
3. 2,214 views
In a particular redox reaction, Cr is oxidized to CrO42– and Cu2 is reduced to Cu . Complete and balance the equation for this
1. 3 answers
2. asked by Anonymous
3. 2,195 views
If paul pays the newspaper company 70% of what he collects how much would he keep for himself in a month when he collected
1. 5 answers
2. asked by Yazmin
3. 2,042 views
Give the NAMES and FORMULAS for the following COVALENT (nonmetallic) compounds.1. Sulfur hexafluoride 2. Tetraphosphorus
1. 4 answers
2. asked by helen
3. 1,982 views
a quantity of gas is collected over water at 15C. The manometer indicated a pressure of 24.0kPa. what would be the pressure of
1. 2 answers
2. asked by garrett
3. 1,938 views
singular and plural pronounsdirection revise each sentence. replace the underlined words with sigular or plural pronouns. 1-
1. 3 answers
2. asked by dw
3. 1,876 views
The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it
1. 1 answer
2. asked by Cat
3. 1,826 views
1) Find the exact value. Use a sum or difference identity.tan (-15 degrees) 2) Rewrite the following expression as a
1. 1 answer
2. asked by cheyanne
3. 1,776 views
How many liters of pure oxygen at STP is consumed by a human being in 24hours if the human body requires daily energy that comes
1. 1 answer
2. asked by garrett
3. 1,709 views
Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the
1. 1 answer
2. asked by math
3. 1,662 views
The boiling point of helium at 1 atm is 4.2 K.What is the volume occupied by helium gas due to evaporation of 70 g of liquid
1. 3 answers
2. asked by Gabe
3. 1,586 views
Al(NO3)3 + NH3 --> ?
1. 1 answer
2. asked by Jimmy
3. 1,572 views
A sample of the sugar D-ribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the
1. 1 answer
2. asked by nicole
3. 1,499 views
Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere.A)
1. 1 answer
2. asked by JIM
3. 1,472 views
A block (mass m1 = 8kg) is moving on an inclined plane, coefficient of kinetic friction of 0.45, whose angle is 30degrees. This
1. 1 answer
2. asked by Anonymous
3. 1,425 views
On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who
1. 2 answers
2. asked by Rose Bud
3. 1,421 views
what is the process for solving the following question?John is 72 inches tall and casts a 40 inch shadow. A monument casts a 24
1. 5 answers
2. asked by n
3. 1,344 views
Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers
1. 2 answers
2. asked by mercy
3. 1,338 views
Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a
1. 1 answer
2. asked by jim
3. 1,332 views
What is the total charge of all the electrons in a 13 kg bar of silver? (Silver has 47 electrons per atom and an atomic mass of
1. 1 answer
2. asked by Millie
3. 1,326 views
Suppose that an unfair coin comes up heads 54.1% of the time. The coin is flipped a total of 13 times.a) What is the probability
1. 1 answer
2. asked by Vikki
3. 1,326 views
A 300.0g sample of ice at -30.OC is mixed with 300.0G of water at 90C. Calculate the final temperature of the mixture assuming
1. 2 answers
2. asked by Keru
3. 1,324 views
in the equation mg+2hcl-->mgcl2+h2, what mass of the hcl is consumed by the reaction of 2.50 mol of magnesium
1. 2 answers
2. asked by Esla
3. 1,305 views
A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure
1. 0 answers
2. asked by Darcie
3. 1,282 views
Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the
1. 1 answer
2. asked by Beth
3. 1,268 views
one kilwatt/hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied fr a time of one hour. a
1. 1 answer
2. asked by taylor
3. 1,174 views
Match each ratio in the first row with an equivalent ratio from the second row if angle A plus angle B = 90 degrees.SinA CosA
1. 2 answers
2. asked by krista
3. 1,155 views
my code works in c++ so the logical I am getting error must be in the reading of the problem, but I can't see it:Given a type
1. 4 answers
2. asked by Cheryl
3. 1,152 views
A rubber ball of mass 19.5 g is dropped from a height of 1.85 m onto a floor. The velocity of the ball is reversed by the
1. 0 answers
2. asked by Tyler
3. 1,135 views
UNDERLINE THE VERB OR VERB GROUP IN EACH SENTENCE. THEN WRITE A NEW SENTENCE USING THE VERB OR VERB GROUP YOU UNDERLINED.BRAN, A
1. 2 answers
2. asked by Celest
3. 1,124 views
What is the [H3O] concentration in a 1.0M CH3COONa solution? (The Ka for CH3COONa is 2.0*10-5.)
1. 1 answer
2. asked by Brianna
3. 1,090 views
I went to the car show this weekend and that is what I saw: Every red car was a sport car, but I found it odd that half of all
1. 2 answers
2. asked by el chave del ocho
3. 1,082 views
The 5th grade marching band includes boys & girls. There are 28 boys in a marching band. The boys are 7/10 of the students in
1. 3 answers
2. asked by nina
3. 1,079 views
What are the factors that affect the quantity of heat needed to raise the temperature of a substance?
1. 1 answer
2. asked by jaquie
3. 1,062 views
This is probably easier then my making it but...Calculate the ph of a forming acid solution that contains 1.35% forming acid by
1. 3 answers
2. asked by L.Bianchessi
3. 1,031 views
How much water should be added to 20oz of a 15% solution of alcohol to dilute it to s 10% alcohol solution?
1. 1 answer
2. asked by rhonda
3. 1,030 views
a recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager
1. 1 answer
2. asked by markeda
3. 1,026 views
Why did Egypt want to control Nubia?
1. 1 answer
2. asked by 5123
3. 1,025 views
A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480
1. 1 answer
2. asked by Tarra
3. 1,011 views
You are considering starting a walk-in clinic. Your financial projections for the first year of operations are as follows:Revenu
1. 1 answer
2. asked by anonymouscoward
3. 1,003 views
A pie chart of total number of students in a school has a sector 35degree representing 14students.how many students are there in
1. 2 answers
2. asked by Tony
3. 997 views
Can someone tell me if I am getting these correct?Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6
1. 1 answer
2. asked by helen
3. 986 views
integrate: (square root of (y^2 -121))/y dy, y>11. I got(12(square root of (y^2-121))/12 -sec^-1 (y/12) +C but it's not right.
1. 0 answers
2. asked by Becca
3. 986 views
what are the solutions to the following equation 3x^2+5=80?
1. 2 answers
2. asked by VERONICA
3. 940 views
Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers
1. 1 answer
2. asked by mercy
3. 934 views
In what ways was dulles's policy of brinkmanship different from truman's cold war policies?Thanks
1. 1 answer
2. asked by Sarah
3. 932 views
The acceleration of a particle moving only on a horizontal plane is given by a= 3ti +4tj, where a is in meters per
1. 1 answer
2. asked by amy
3. 929 views
If you need 240 oz of paint to cover 1200 in. How much paint do you need to cover 2000 in.?
1. 2 answers
2. asked by Lindsey
3. 926 views
what according to the basic conditions of employment act applies with regard to the contraventions ?
1. 1 answer
2. asked by Anonymous
3. 924 views
A quantity of gas has a volume of 121 L when confined under a pressure of 2.50 atm at a temperature of 20.0 C. At what pressure
1. 2 answers
2. asked by garrett
3. 912 views
Why are stories and poems about the "realms of darkness" so popular with many readers?Thanks -MC
1. 6 answers
2. asked by mysterychicken
3. 909 views
A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut
1. 0 answers
2. asked by sand
3. 903 views
The acceleration of a particle moving only on a horizontal plane is given by a= 3ti +4tj, where a is in meters per
1. 0 answers
2. asked by amy
3. 898 views
Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m =
1. 1 answer
2. asked by Avery
3. 892 views
Application of psycology in developing country
1. 1 answer
2. asked by Bayush
3. 891 views
this years funderaiser picnc is $10 per person plus $2 for each person in the family. determine the number of people in a family
1. 4 answers
2. asked by taylor
3. 887 views
How many moles of sodium hydroxide are produced when 0.155 mole of sodium reacts with excess water?
1. 1 answer
2. asked by Cris
3. 886 views
Solve Cos^2(x)+cos(x)=cos(2x). Give exact answers within the interval [0,2π)Ive got the equation down to -cos^2(x)+cos(x)+1=0
1. 1 answer
2. asked by Josh
3. 872 views
A 16.3 kg block is dragged over a rough, horizontal surface by a constant force of 157 N acting at an angle of 35 degree above
1. 1 answer
2. asked by Anonymous
3. 859 views
A car starting from rest accelerates uniformly are attaing a speed of 80m/s in 30s it maintains this stedy speed for another
1. 2 answers
2. asked by adeyemi
3. 824 views
Some questions fall outside of the realm of science;which of the following questions could not be ansewered usingf the
1. 0 answers
2. asked by Anonymous
3. 823 views
Need help with solving the double equation problem. 3x + 2y = 39x - 8y = -2
1. 1 answer
2. asked by Beth
3. 822 views
A man walks one mile east, then he walks one mile northeast and then he walks one mile east. How far is he from his initial
1. 1 answer
2. asked by Bailee
3. 821 views
Which of the following expressions is equivalent to (4a^2b)^3(ab)^3?a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6
1. 1 answer
2. asked by VERONICA
3. 814 views
One coin is fair and one is weighted so that Pr[H] = [ 1/4]. You randomly select one of the two coins, and flip it 3 times,
1. 1 answer
2. asked by KS
3. 813 views
I'm trying to find the intersection point of y=x-2 and y=sqrt(x). I tried letting both equations equal each other but kept
1. 1 answer
2. asked by Lindsay
3. 808 views
holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections
1. 6 answers
2. asked by dada
3. 806 views
A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days.
1. 2 answers
2. asked by Angelina
3. 784 views
11.Which one of the following statements is not true about the president Ratcliffe portrayed in The General History? He wasn't
1. 4 answers
2. asked by helpp
3. 773 views
Katie is 3/5 of the way to Brianna's house. Larry is 7/10 of the way to Brianna's house. How much closer to Brianna's house is
1. 2 answers
2. asked by Heaven
3. 773 views
The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the
1. 1 answer
2. asked by Mohamed
3. 771 views
A point charge (m = 1.0 g) at the end of an insulating string of length L = 51 cm (Fig. 16-66) is observed to be in equilibrium
1. 0 answers
2. asked by Millie
3. 770 views
A person of mass 84.5 kg is initially at rest on the edge of a large stationary platform of mass 150 kg, supported by
1. 0 answers
2. asked by John
3. 761 views
the mason family went to the amusement park. they spent 56.00$ on tickets. if adults cost 12$ and kids cost 5$ how many adults
1. 2 answers
2. asked by jazzlyn
3. 752 views
The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is
1. 1 answer
2. asked by Katie
3. 745 views
Give names of the following covalent (nonmetallic) compounds:S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H
1. 1 answer
2. asked by Anon
3. 738 views
The speed of light of a plastic is 1.4x10^8. What is the index of refraction in the plastic?
1. 2 answers
2. asked by crystal
3. 734 views

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