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Questions Asked on January 30, 2012

For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under
1. 14 answers
2. asked by Mike
3. 17,380 views
The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at
1. 1 answer
2. asked by Anne
3. 13,510 views
2. The retina of a human eye can detect light when radiant energy incident on it is at least 4.0X10-17 J. For light of 600-nm
1. 1 answer
2. asked by sargam
3. 7,446 views
a toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a
1. 2 answers
2. asked by Anonymous
3. 5,442 views
Determine the exact value of cos 465 degreesa) √3 + √2/2 b) √2 + √3√2/4 c)√2 - √3√2/4 d)2+√2-√3√2/4
1. 3 answers
2. asked by Melinda
3. 5,326 views
What is the density of Li2S in grams per cubic centimeter, if the edge length of the unit cell is 5.88*10^2 pm?
1. 1 answer
2. asked by amicus
3. 4,859 views
The fact that ice is less dense than water is related to the fact that ____.the molecular structure of ice is much less orderly
1. 3 answers
2. asked by Lexi
3. 4,724 views
Table 1: Temperature and volume dataTrial Temperature (Celsius) Volume (mL) Starting Volume Room Temperature = Hot Water Trial 1
1. 1 answer
2. asked by ThuyD
3. 4,351 views
Write 4log2+log6-log3 as a single logarithm.Explain with steps please!~~
1. 1 answer
2. asked by Jake
3. 4,044 views
A pomegranate is thrown from ground level straight up into the air at time t=0 with velocity 128 feet per second. Its height in
1. 1 answer
2. asked by Anonymous
3. 3,755 views
A force of 1000 N is applied to a 1200 kg car. If the coefficient of friction is 0.04, what is the car's acceleration?
1. 4 answers
2. asked by Maria Ellah
3. 3,567 views
A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring,
1. 3 answers
2. asked by amanda and leah
3. 3,417 views
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. A Be3+ ion with an
1. 1 answer
2. asked by mike
3. 3,217 views
write to explain- when you divide 24 by 6, what fraction of 24 are you finding? find the answer.
1. 3 answers
2. asked by dw
3. 3,075 views
A 100 lb crate is being pushed across a wooden floor with a force of 40 lb. If mu=0.3, find the acceleration of the crate.
1. 2 answers
2. asked by Maria Ellah
3. 3,008 views
1)Which compound below would be expected to have the highest boiling point?a) CH3-CH2-CH2-CH2-CH2-CH2-CH3 b)
1. 4 answers
2. asked by Hannah
3. 2,957 views
A cheetah running at 30 m/s is pursuing a zebra going in a straight line at 14 m/s. If the zebra has a 35 m head start, how much
1. 1 answer
2. asked by Daniel
3. 2,954 views
Which is more soluble in water: propionic acid or sodium propionate?
1. 2 answers
2. asked by Jeremy
3. 2,519 views
A force of 250 N is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static
1. 9 answers
2. asked by Maria Ellah
3. 2,456 views
Circle the term that does not belong in each of the following groupings.1. HC1 secretion Acetyicholine Histamine Secretin
1. 1 answer
2. asked by Katie
3. 2,372 views
the vapor pressure of ethanol at 20c is 44 mmHg and the vapor pressure of methanol at the same temperature is 94mmHg. A mixture
1. 2 answers
2. asked by cassidy
3. 2,340 views
A car is traveling at Vx =20 m/s. The driver applies the brakes, and the car slows with ax = -4m/s^2. What is the stopping
1. 1 answer
2. asked by larry
3. 2,336 views
1. Americans are often accused of being ethnocentric. This means thatA. Americans welcome diversity in their work force. B.
1. 9 answers
2. asked by April
3. 2,322 views
Why do temperatures drop in the cold sector?
1. 2 answers
2. asked by belo
3. 2,258 views
A car whose brakes are locked skids to a stop in 200 ft from an initial velocity of 50 mi/hr. Find the coefficient of sliding
1. 2 answers
2. asked by Maria Ellah
3. 2,230 views
A dolphin wants to swim directly back to its home bay, which is 0.85 km due west. It can swim at a speed of 4.35 m/s relative to
1. 2 answers
2. asked by Anonymous
3. 2,228 views
A water pistol aimed horizontally projects a stream of water with an initial speed of 5.00 m/s.(a) How far does the water drop
1. 2 answers
2. asked by Rebecca
3. 2,227 views
A force of 300 N is sufficient to keep a 100 kg crate moving at a constant speed across a wooden floor. What is the coefficient
1. 2 answers
2. asked by Maria Ellah
3. 2,188 views
Three identical conducting spheres initially have the following charges: sphere A, 4Q; sphere B, -9Q; and sphere C, 0. Spheres A
1. 1 answer
2. asked by Tyler
3. 2,169 views
Find an equation of the circle tangent to x + y = 3 at (2,1) and with center on 3x - 2y - 6 = 0
1. 1 answer
2. asked by Jane
3. 2,101 views
A Spring (k=790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is
1. 3 answers
2. asked by help-not sure how to do this
3. 2,071 views
It takes a florist 3 hour and 15 minutes to make 3 small centerpieces and 3 large centerpieces. It takes 6 hours and 20 minutes
1. 1 answer
2. asked by Emma
3. 1,982 views
Six angles in a hexagon are fit together.It looks like this..._____ /\ / \ /_1\6/_5\ \ 2/3\4/ \/____/ I try to draw the picture
1. 2 answers
2. asked by Megan
3. 1,893 views
A 200-kg cart is pushed slowly up an incline. How much work does the pushing force do in moving the cart up to a platform 1.5 m
1. 1 answer
2. asked by BNC
3. 1,802 views
The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north
1. 1 answer
2. asked by Jordan
3. 1,773 views
A weightlifter raises a 200-kg barbell through a height of 2 m in 2.2 s. The average power he develops during the lift is
1. 2 answers
2. asked by Anonymous
3. 1,771 views
Find C if AB x C = AAA
1. 1 answer
2. asked by seema
3. 1,768 views
the chef at a restaurant bought 37 pounds of salad for $46.25. how much did she pay for 1 pound of salad
1. 5 answers
2. asked by Grace
3. 1,766 views
Use your knowledge of balance sheets and common-size statementsto fill in the missing dollar amounts: ASSETS Cash $25,000 3.4%
1. 1 answer
2. asked by audrey
3. 1,742 views
You have 60 megabytes of space left on your portaable media player. You can choose to download song files that use 3.5 megabytes
1. 1 answer
2. asked by Emma
3. 1,699 views
Write the following in terms of sin(θ) and cos(θ); then simplify if possible.sec(θ) / tan(θ) =
1. 1 answer
2. asked by David
3. 1,679 views
A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring,
1. 2 answers
2. asked by amanda and leah
3. 1,674 views
A jewelry store is selling a set of 4 pairs of gemstone earrings for $58, including tax. Neva and three of her friends bought
1. 9 answers
2. asked by Mia
3. 1,607 views
1. What two common identities are most useful for simplifying 2tanx/(sin^2x + cos^2x - tan^2x)?Two identities are: sin^2x +
1. 2 answers
2. asked by Melinda
3. 1,545 views
Which of the following is a situation where an object’s potential energy varies as a result of changes due to its chemical
1. 1 answer
2. asked by k
3. 1,539 views
What is the percent by mass of H in ethylalcohol (C2H6O)? The molecular weight of carbon is 12.0107 g/mol, of hydrogen 1.00794
1. 1 answer
2. asked by tyeisha colley
3. 1,511 views
Add and subtract as indicated. Then simplify your answer if possible. Leave answer in terms of sin(θ) and/or cos(θ). (Remember
1. 1 answer
2. asked by joshua
3. 1,444 views
A model rocket is launches upward with an initial velocity of 160 feet per second. The height, in feet, of the rocket t seconds
1. 1 answer
2. asked by missy
3. 1,410 views
A simple economy consists of two industries: agriculture and manifacturing. The production of 1 unit of agricultural products
1. 1 answer
2. asked by dub
3. 1,404 views
could you please help me?john needs to earn $693 to pay for trip. he finds job that pays $7 per hour and he mows lawns for $9.
1. 3 answers
2. asked by ann
3. 1,384 views
Pete's Warehouse has a market value of $5,000,000. The property in Pete's area is assessed at 40% of the market value. The tax
1. 3 answers
2. asked by Renee
3. 1,316 views
A(n) 5.52 g bullet is fired into a(n) 3.07 kg ballistic pendulum and becomes embedded in it.The acceleration of gravity is 9.8
1. 1 answer
2. asked by amanda and leah
3. 1,311 views
Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three
1. 1 answer
2. asked by jackie
3. 1,275 views
A tennis ball is thrown vertically upward withan initial velocity of +7.5 m/s. What will the ball’s velocity be when it
1. 1 answer
2. asked by shay
3. 1,273 views
What is your personal opinion about these scientific objectives to be added to my project on biodiversity in water?Thank you
1. 0 answers
2. asked by Henry2
3. 1,266 views
Which distance is the greatest ?A. The distance across the Milky Way Galaxy. B. The distance to the nearest star Cluster. C. The
1. 0 answers
2. asked by Natalie
3. 1,254 views
Assume you have a computer that contains 1 GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB,
1. 2 answers
2. asked by Jolie
3. 1,242 views
Hi I have a follow up to a question that was answered previously.New question: So when the HPO4(2-) reacts with the NaOH, will
1. 1 answer
2. asked by jean
3. 1,203 views
Suppose that a quadratic equation had two x-intercepts. How could you use the intercepts to find the vertex?
1. 1 answer
2. asked by jimmy
3. 1,192 views
Brice found the volume of a box by filling the box with 1-inch blocks. Which unit of measure did Brice use to find the volume?A.
1. 7 answers
2. asked by Andrew
3. 1,192 views
Verify these answers please.1. Which of the following functions would f(x) = log(base 10)x horizontally 4 units to the left? a)
1. 0 answers
2. asked by Melinda
3. 1,179 views
Add and subtract as indicated. Then simplify your answer if possible. Leave your answer in terms of sin(θ) and/or cos(θ).sinθ
1. 1 answer
2. asked by ?????
3. 1,160 views
A person dives off the edge of a cliff 33m above the surface of the sea below. Assuming that air resistance is negligible, (a)
1. 2 answers
2. asked by Jessica
3. 1,144 views
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right?1) S2-(aq) + HCl(aq) <=>Cl1-(aq) +
1. 1 answer
2. asked by Erik
3. 1,096 views
If the score on a test has a mean of 52 and a standard deviation of 5, what is the z-score for a score of 58
1. 1 answer
2. asked by Anonymous
3. 1,093 views
What am I doing wrong? I keep getting 48 and its wrong...Solve 2log(x)-log(4)=3log(4) 2log(x)-log(4) log(x/4)=3log4
1. 3 answers
2. asked by Melinda
3. 1,092 views
Calculate the energy in kJ/mol of a mol of photons in the ultra-violet region of the electromagnetic spectrum that has a
1. 3 answers
2. asked by Kyle
3. 1,081 views
In a sn2 reaction why do we need sp3 hybrid orbital and not sp2 for the substrate
1. 0 answers
2. asked by lou
3. 1,077 views
What does a 5" x 8" index card look like?
1. 3 answers
2. asked by Laruen
3. 1,071 views
I screwed up the first post with this question so re posting to find some help.A person purchased a 225463 home 10 years ago by
1. 1 answer
2. asked by Phil Rewa
3. 1,068 views
Describe occupations, agencies, or departments that you think may profit from actual or perceived increases in crime.
1. 1 answer
2. asked by sharday
3. 1,063 views
KMn04 with iron(II) ammonium sulphate hexahydrate-redox titration.1-what is the purpose of adding H2SO4 to iron sample before
1. 1 answer
2. asked by yuni
3. 1,059 views
1) Given the following “substances” and their normal boiling points, in celsius.G:43.8 Celsius J:93.7 M:56.7 T: 83.5 R:63.6
1. 1 answer
2. asked by Hannah
3. 1,045 views
Someone who has never seen a normal die before decides to estimate the mean value of all its faces (μ) by rolling it many
1. 1 answer
2. asked by Nadia
3. 1,039 views
Which has a larger perimeter ,a 20-inch by 32-inch rectangle or a 28-inch square
1. 1 answer
2. asked by Macy
3. 1,034 views
A tractor of mass 5.0*10^3kg is used to tow a car of mass 2.5*10^3kg.the tractor moved with a speed of 3.0m/s^1 just before the
1. 3 answers
2. asked by Thank-God
3. 1,033 views
Three charged particles form a triangle: particle 1 with charge Q1 = 84.0 nC is at xy coordinates (0, 4.60 mm), particle 2 with
1. 0 answers
2. asked by Tyler
3. 1,030 views
a bag contains 3 red marbles and 6 green marbles a marble is drawn and then replaced a second marble is drawn and replaced and
1. 1 answer
2. asked by Anonymous
3. 1,027 views
1. In a _______, consumers ultimately decide what should beproduced. A. macroeconomic system C. free market system B. socialist
1. 6 answers
2. asked by jamie
3. 1,021 views
Gail and her 3 friends all share half a pie. All the pieces in thwe pie put together make up 180 degrees. Gail and her friends
1. 3 answers
2. asked by michelle
3. 1,014 views
the sides of an acute triangle are x, 35, and 37, where x is the shortest side. find the range of possible values for x and
1. 0 answers
2. asked by tab
3. 1,013 views
which value is the closest to 1/9.24/25a. 0 b. 0.5 c. 1 d. 21/20
1. 6 answers
2. asked by cain
3. 1,012 views
The owner of a hair salon charges $20 more per haircut than the assistant. Yesterday the assistant gave 12 haircuts. The owner
1. 2 answers
2. asked by Emma
3. 1,011 views
A pitcher claims he can throw a 0.146 kgbaseball with as much momentum as a 3.37 g bullet moving with a speed of 15238 m/s. What
1. 1 answer
2. asked by kesha
3. 991 views
Write the following in terms of sin(θ) and cos(θ); then simplify if possible.csc(θ) - cot(θ)cos(θ) =
1. 1 answer
2. asked by DALE
3. 980 views
for paralleogram ABCD, m<1=x+25 and m<2=2x find m<2
1. 2 answers
2. asked by Jayce
3. 973 views
Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white
1. 0 answers
2. asked by Jonathon
3. 965 views
A 200-kg cart is pushed slowly up an incline. How much work does the pushing force do in moving the cart up to a platform 1.5 m
1. 0 answers
2. asked by Nichelle
3. 963 views
The length of an object in feet is equal to 3 times its length in yards. The length of a waterslide is 48 feet. Write and solve
1. 4 answers
2. asked by Anna
3. 960 views
Which of the following is an example of a chemical change (change in chemical composition) that involves starting with a liquid
1. 2 answers
2. asked by k
3. 955 views
a pendulum with a length of .600 m has a period of 1.55 s. what is acceleration due to gravity at the pendulums location
1. 1 answer
2. asked by how to do this?
3. 942 views
Assume you have a computer that contains 2GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB,
1. 3 answers
2. asked by Amber
3. 941 views
Why do mid-latitude depression move from west to east?
1. 3 answers
2. asked by belo
3. 924 views
how much energy is released when a 5600-g sample of water cools from 99 degrees C to 28 degrees C?
1. 2 answers
2. asked by Anonymous
3. 915 views
A ball is dropped from the top of a 95 m building. With what speed does the ball hit the ground?
1. 1 answer
2. asked by kyle
3. 905 views
In a quiz program, 3 questions on sprots, 3 questions on general knowledge, and 4 questions on science are printed separately on
1. 1 answer
2. asked by Dena
3. 898 views
What is the balanced equation for oxidation of iodide ion by oxygen (O2) that occurs which produces iodine.
1. 3 answers
2. asked by kalynn
3. 890 views
Please let me know if I figured this out correctly.Directions: Find the slope of a line perpendicular to the graph of each
1. 2 answers
2. asked by Kate
3. 888 views
put an (*) next to the answer I chose. Not asking anyone to do my work for me; just want a double check. I'm a little unsure
1. 2 answers
2. asked by Glen
3. 887 views
Three point charges, -6.35 10-9 C, -8.20 10-9 C, and +7.75 10-9 C, are fixed at different positions on a circle. The total
1. 0 answers
2. asked by Anne
3. 887 views

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