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2012
February

Questions Asked on February 16, 2012

How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL)Is it 2.28mL of conc HCl dilute to 100mL with
1. 4 answers
2. asked by annie
3. 17,082 views
A triangle has side lengths of 14 cm, 48 cm, and 50 cm is it acute, obtuse, or right
1. 5 answers
2. asked by Anonymous
3. 6,932 views
Why did President Abraham Lincoln want Reconstruction to be simple and easy?Choices are: A. He wanted to win the votes in the
1. 23 answers
2. asked by Samantha
3. 5,093 views
A diploid organism has five pairs of chromosomes in each somatic cell. Assuming that no crossing over occurs, how many
1. 2 answers
2. asked by Rebecca
3. 4,364 views
Find the volume of the solid by subtracting two volumes, the solid enclosed by the parabolic cylinders y = 1 - x 2, y = x 2 - 1
1. 1 answer
2. asked by Aaron
3. 4,222 views
In what proportion should 95% alcohol be mixed with 30% alcohol to make 70% alcohol?
1. 1 answer
2. asked by Vicki
3. 3,922 views
In a bag of marbles, 3/5 of them are blue and the rest are red. If the number of red marbles is doubled and the number of blue
1. 3 answers
2. asked by Cameron
3. 3,773 views
calculate enthalpy of H for the reactionN2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) +
1. 3 answers
2. asked by Rose Bud
3. 3,737 views
find y'' if x^4+y^4=16
1. 1 answer
2. asked by Johnathan
3. 3,544 views
If a solution of HF (Ka = 6.8*10-4) has a pH of 3.42, calculate the total concentration of hydrofluoric acid.
1. 2 answers
2. asked by MARY
3. 3,343 views
Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. If your arm is 0.93 m
1. 2 answers
2. asked by Lisa
3. 3,337 views
A freight train has a mass of 1.5 107 kg. If the locomotive can exert a constant pull of 6.9 105 N, how long does it take to
1. 3 answers
2. asked by smh
3. 3,096 views
a bullet is fired at 660 m/s and strikes a target 200 meters away. what is the duration of the bullet?
1. 4 answers
2. asked by Anonymous
3. 2,965 views
the lawn order lawnmower factory can produce 12 lawnmowers in 8 hours. How many hours will it take the actory to produce 30
1. 1 answer
2. asked by Candice
3. 2,931 views
An equation of the line tangent to the graph of f(x) = (4x2 - 8x + 3)4 at the point where x = 1 is:
1. 3 answers
2. asked by Anonymous
3. 2,893 views
A cannonball is catapulted toward a castle. The cannonball's velocity when it leaves the catapult is 39 m/s at an angle of 40°
1. 1 answer
2. asked by Anonymous
3. 2,736 views
From an observation point A, a forest ranger sights a fire in the direction S32°20'W (see the figure). From a point B, 5 miles
1. 1 answer
2. asked by Anonymous
3. 2,715 views
How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide?How many molecules of O2 are produced?
1. 2 answers
2. asked by Dani
3. 2,520 views
Given the following equation, how many grams of PbCO3 will dissolve when exactly 1.0 L of 1.00 M H+ is added to 6.00 g of PbCO3?
1. 2 answers
2. asked by Tori
3. 2,513 views
calculate the theoretical weight of sodium borohydride need to reduce 50 mg of benzil
1. 1 answer
2. asked by vanessa
3. 2,510 views
Assume that you randomly select 8 cards from a deck of 52.What is the probability that all of the cards selected are hearts?
1. 2 answers
2. asked by Kelly
3. 2,408 views
A proton moves in a constant electric field from point A to point B. The magnitude of the electric field is 6.4 × 10^4 N/C; and
1. 2 answers
2. asked by Daniel
3. 2,215 views
find the perpendicular distance from the corner of the triangle to the opposite side if the side is 25cm long
1. 4 answers
2. asked by molly
3. 2,167 views
Find a linear equation whose graph is the straight line with the given property.Through (2, −7) and (1, 1) I got -8x-23, I
1. 1 answer
2. asked by Jane
3. 2,055 views
Suppose that 8% of a certain batch of calculators have a defective case, 11% havedefective batteries, and 3% have both of these
1. 3 answers
2. asked by Anonymous
3. 2,035 views
determine the specific heat of a 150.0 gram object that requires 62.0 cal of energy to raise its temperature 12.0 C.
1. 2 answers
2. asked by ada
3. 1,855 views
Silicon Carbide, SiC,is prepared using the chemical reaction:SiO2 + 3C ---> SiC +2CO How many grams of SiC can be produced from
1. 2 answers
2. asked by Fisher
3. 1,833 views
quadrilateral JKLM is graphed in the coordinate plane.Classify quadrilateral JKLM as specifically as possible.Show your work,
1. 1 answer
2. asked by Anonymous
3. 1,791 views
find y' if sin^-1(xy)=cosy
1. 1 answer
2. asked by angie
3. 1,759 views
A 65.0 g sample of 0.600 M HI at 18.46 degrees celsius is added to 84.0 g of solution containing excess KOH, also at 18.46
1. 2 answers
2. asked by Rose Bud
3. 1,681 views
a tree cast a shadow 25 feet long. the angle of elevation from the far end of the shadow to the top of the tree is 64
1. 1 answer
2. asked by tori
3. 1,671 views
The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the
1. 1 answer
2. asked by Anon
3. 1,667 views
Microwaves travel at the speed of light, 3.00×108 m/s. When the frequency of microwaves is 3.67× 109 Hz, what is their
1. 1 answer
2. asked by Angel
3. 1,652 views
Mrs. Lincoln budgets her monthly take-home pay. The remainder she deposits in her savings account. She budgets 1/3 of her
1. 4 answers
2. asked by Sadie
3. 1,635 views
If a 2.6 g of weak diprotic acid were dissolved in 100 mL of water and a 10 mL aliquot of this solution required 21.6 mL of 0.1
1. 2 answers
2. asked by jhon
3. 1,545 views
A skier with a mass of 56 kg starts from rest and skis down an icy (frictionless) slope that has a length of 70 m at an angle of
1. 3 answers
2. asked by Michelle
3. 1,537 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. 1,528 views
A particle that undergoes simple harmonic motion has a period of 0.4 s and an amplitude of 12 mm. The maximam velocity of the
1. 2 answers
2. asked by Abdela
3. 1,522 views
Solve the equation and write down the property you use at each step to simplify the equation. Consider the equation: 4x + 11 =
1. 1 answer
2. asked by Twanisha
3. 1,485 views
Five out of 8 bags of M&M's had exactly 32 pieces in them. How many bags out of 40 should have exactly 32 pieces?
1. 3 answers
2. asked by Anonymous
3. 1,445 views
Assume that you select 2 coins at random from 5 coins: 3 dimes and 2 quarters.What is the probability that all of the coins
1. 1 answer
2. asked by Kelly
3. 1,435 views
express x-1/(x+1)(x-2)^2 into partial fractions
1. 2 answers
2. asked by chrystabelle
3. 1,386 views
A piano emits frequencies that range from alow of about 28 Hz to a high of about 4200 Hz. Find the maximum wavelength in air
1. 1 answer
2. asked by Angel
3. 1,359 views
Zinc sulfide and oxygen gas react to form oxide and sulfur dioxide. Determine the amount of ZnO that should be produced in a
1. 1 answer
2. asked by Christian
3. 1,347 views
A group of students who are selecting 2 of their group at random to give a report, but assume that there are 5 males and 3
1. 1 answer
2. asked by math hates me :(
3. 1,330 views
A card is drawn from a standard deck of cards. Find P(A U B) in each part.A= {getting a heart}, B= {getting an even number} A=
1. 1 answer
2. asked by christy
3. 1,307 views
High-voltage power lines are a familiar sight throughout the country. The aluminum wire used for some of these lines has a
1. 0 answers
2. asked by Anonymous
3. 1,260 views
Which phrase from the U.S. Constitution BEST reflects the principle of popular sovereignty?A. “No person shall be a Senator .
1. 2 answers
2. asked by lalt
3. 1,258 views
The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of
1. 1 answer
2. asked by joey
3. 1,250 views
Answer the questions based on the information give on the sign1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River
1. 0 answers
2. asked by Colton
3. 1,250 views
How do you verify inverses?the question is y=3x-3... we know how to make an inverse but how do you verify it using composition?
1. 1 answer
2. asked by nicole and brian!
3. 1,249 views
A particle is moving clockwise in a circle of radius 1.54 m. At a certain instant, the magnitude of its acceleration is a = 26.0
1. 4 answers
2. asked by sara
3. 1,242 views
: 1.0 L of an unknown gas was allowed to effuse through a small opening under constant pressure conditionssuppose you have two
1. 1 answer
2. asked by davy
3. 1,224 views
Which of the following words best describes the climate of New Zealand..a) tropical b) temperate c)arid d)artic
1. 1 answer
2. asked by Tiff
3. 1,219 views
A ball is thrown horizontally off the edge of a cliff with an initial speed of 20.4 m/s.(a) How long does it take for the ball
1. 0 answers
2. asked by Anonymous
3. 1,209 views
a lab technician has a 15% alcohol solution. She wants to make 100 gallons of a 29% solution. How much of the 15% solution
1. 0 answers
2. asked by matt
3. 1,207 views
The Preamble of the U.S. Constitution“We the People of the United States, in Order to form a more perfect Union, establish
1. 1 answer
2. asked by lalt
3. 1,168 views
Ok so you're supposed to solve the system by method of substitution. And the problem is:-2/3x + y = 2 2x - 3y = 6 So i put y=
1. 3 answers
2. asked by Carrie
3. 1,156 views
the equation is TiCl4 + O2 (yields) TiO2 + 2Cl2.How much titanium(IV) chloride must react with excess oxygen to prepare 175
1. 1 answer
2. asked by Michelle
3. 1,149 views
find the point (or points) where the ellipse 9x^2+4y^2=36 has maximum curvature. don't even know where to start with this one.
1. 4 answers
2. asked by brian
3. 1,142 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. 4 answers
2. asked by Anonymous
3. 1,131 views
Suppose you need 2.08 g of chlorine gas (Cl2) What volume at STP would you need to use?
1. 1 answer
2. asked by
3. 1,127 views
A drag racer crosses the finish line of a 304.8 m track with a final speed of 121 m/s.(a) Assuming constant acceleration during
1. 0 answers
2. asked by Anonymous
3. 1,118 views
calculate enthalpy of H for the reactionN2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) +
1. 0 answers
2. asked by Rose Bud
3. 1,080 views
2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other
1. 2 answers
2. asked by Ed
3. 1,075 views
A) At 800 K the equilibrium constant for I2(g) <=> 2 I(g) is Kc = 3.1 10-5. If an equilibrium mixture in a 10.0-L vessel
1. 1 answer
2. asked by HELP PLEASE
3. 1,064 views
Why was Lincoln assassinated?Choices are: A. Booth had a mental illness B. Booth blamed Lincoln for the war C. Booth shot the
1. 6 answers
2. asked by Samantha
3. 1,051 views
Solve the following problem. The owner of a toy store is taking inventory of bicycles and tricycles in an unusual way. He said
1. 1 answer
2. asked by Alicia
3. 1,046 views
A flask containing a gas was connected to both a closed-end and an open-end manometer. In the closed-end manometer, the mercury
1. 0 answers
2. asked by Katie
3. 1,034 views
For this assignment you will be using the course companion Web site, MasteringBiology.View and complete the MP3 tutorial: The
1. 3 answers
2. asked by sharday
3. 1,024 views
2. The grades on a statistics midterm exam were normally distributed with amean of 72 and a standard deviation of 8. a. What is
1. 1 answer
2. asked by kabita
3. 1,022 views
Determine the volume of a 0.550M of kmno4 solution required to completely react with 2.70 of zn
1. 1 answer
2. asked by ain
3. 1,019 views
Create and describe a data set including independent and dependent variables (be creative) and a table of the data. Explain how
1. 2 answers
2. asked by sharday
3. 1,014 views
Answer the questions based on the information give on the sign1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River
1. 0 answers
2. asked by Colton
3. 1,004 views
A baseball is thrown horizontally from a height of 11.20 m above the ground with a speed of 27.5 m/s. Where is the ball after
1. 1 answer
2. asked by Anonymous
3. 987 views
A cab charges $2.95 for the first 1/4 mi and charges $0.65 for every additional 1/4 mi or apart thereof. What is a possible
1. 1 answer
2. asked by Rose
3. 977 views
what is the amplitude, period, phase shift, and vertical shift of each equation?1. y= A cos(B(x-3))+4 2. y=-2sin(2piX/3) 3.
1. 0 answers
2. asked by BreAnne
3. 954 views
A string has a length of 84 cm. The string is stretched taut, and both ends are restricted to be nonmoving. Touching the string
1. 2 answers
2. asked by Brittney
3. 952 views
A conducting hollow sphere of radius. 2m and charge 20 micro coulumbs. What is the potential of the sphere at a distance r from
1. 0 answers
2. asked by anne
3. 945 views
When 16.3 g of magnesiumm reacts with 4.52 g of oxygen, how many grams of magnesium oxide will be performed? Identify the
1. 1 answer
2. asked by Kayla
3. 944 views
For a rollercoaster, a hydraulic catapult propels the car to the top of the ride, at a height of 430 ft. If the car and
1. 0 answers
2. asked by Chio
3. 943 views
A concentration cell based on the following half reaction at 317 K(Cu^2+) + (2e-) --> (Cu) SRP = 0.34 V Has initial
1. 0 answers
2. asked by Arron
3. 942 views
During June, the receipts and issuances of Material No. A2FO are as follows:Received June 3 1,100 units @ $15 16 1,700 units@
1. 1 answer
2. asked by Ryan
3. 924 views
Relive how I put in sentence
1. 2 answers
2. asked by Johnny
3. 903 views
One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and
1. 2 answers
2. asked by HARDEST QUESTION IN THE WORLD
3. 901 views
Players on Team; Tennis 2, Basketball 5A community center has 3 tennis teams and 5 basketball teams. No one is on both teams.
1. 2 answers
2. asked by Nadine
3. 901 views
Assume that you randomly select 8 cards from a deck of 52.What is the probability that all of the cards selected are hearts?
1. 1 answer
2. asked by Rachel
3. 895 views
Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable:number of bank
1. 1 answer
2. asked by holland pattent
3. 894 views
You are designing a rain gutter made from a piece of sheet metalthat is 1 foot by 5 feet. The gutter is formed by turning up two
1. 3 answers
2. asked by john
3. 893 views
int carry=0;int prod,i,j,rem; int base=10; else if ( op == '*' ) //checks for operator, performs array multiplication {
1. 2 answers
2. asked by sardar
3. 883 views
What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulombs and q2= -5 micro coulombs?Atte
1. 1 answer
2. asked by bel
3. 880 views
"Those RULES of old discover'd not devis'dAre nature still, but Nature Mehtodiz'd Nature, Like Liberty is but restrain'd By the
1. 3 answers
2. asked by Jasmine
3. 879 views
Forty-eight decrease by a number is the same as the difference of four times the number and seven. Find the number.Please help
1. 2 answers
2. asked by Sadie
3. 871 views
Write balanced equation for:Al + NH4CLO4 (yields) Al2O3 + AlCl3 + nitrogen monoxide gas, and steam
1. 1 answer
2. asked by Michelle
3. 857 views
Thermochemistrydetermine the final temperature if 45.67 kJ of heat energy is removed from 18.5 g of H2O (g) at 122 degrees
1. 3 answers
2. asked by Rose Bud
3. 857 views
Many birds drop clams or other shell fish in order to break the shell and get the food inside. Suppose a crow drops a shell from
1. 1 answer
2. asked by Steph
3. 853 views
The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of
1. 0 answers
2. asked by joe
3. 850 views
A model of s skyscraper is 1.6 in. long,2.8 in. wide, and 11.2in. high.The scale factor is 8 in. 250 ft. What is the actual
1. 3 answers
2. asked by Anonymous
3. 847 views
Use a pronoun that can take the place of each group of words. Use he, she, it, we or they1. Karen and I 2. the hoses 3. Dad and
1. 1 answer
2. asked by Hayden
3. 831 views
Don’t you just wish you can have the time of your life without your parents? I know I wish I could. I would like to go out and
1. 4 answers
2. asked by Mia
3. 828 views

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