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Questions Asked on October 12, 2012

In a 1.0x10^-4 M solution of HClO(aq), identify the relative molar amounts of these species:HClO, OH-, H3O+, OCl-, H2O
1. 4 answers
2. asked by karla
3. 12,933 views
A skier starts from rest at the top of a hill that is inclined at 9.5° with respect to the horizontal. The hillside is 225 m
1. 1 answer
2. asked by monic
3. 6,764 views
Which would be the best way to display the data—a bar graph, a histogram, or a line graph?I think a bar graph because it is
1. 16 answers
2. asked by Moby
3. 6,070 views
A uniform meter stick balances on a fulcrum placed at the 40 cm mark when a weight W is placed at 30 cm mark. What is the weight
1. 1 answer
2. asked by Vy
3. 4,814 views
Nitrogen oxide reacts with oxygen gas to form nitrogen dioxide (NO2). In one experiment 0.866 mole of NO is mixed with 0.503
1. 1 answer
2. asked by Alexis
3. 4,528 views
a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high
1. 2 answers
2. asked by peter
3. 4,307 views
block A (mass 2.04kg) rests on a tabletop. It is connected by a horizontal cord passing over a light, frictionless pulley to a
1. 1 answer
2. asked by george
3. 3,776 views
A skier of mass 74 kg is pulled up a slope by a motor-driven cable.(a) How much work is required to pull him 90 m up a 30°
1. 2 answers
2. asked by monic
3. 3,620 views
A particle is projected from ground in a vetical direction at t=0 sec. at t=0.8 s, it reaches h=14m .It will again come to the
1. 2 answers
2. asked by Anonymous
3. 3,472 views
On an aircraft carrier, a jet can be catapulted from 0 to 155 mi/h in 2.00 s. If the average force exerted by the catapult is
1. 1 answer
2. asked by Emma
3. 3,272 views
Arrange the following atoms in order of increasing size from smallest to largest.Phosphorus Fluorine Chlorine Sulfur
1. 2 answers
2. asked by Den
3. 3,132 views
A swimmer can swim in still water at a speedof 9.31 m/s. He intends to swim directly across a river that has a downstream
1. 1 answer
2. asked by Diego
3. 3,074 views
A uniform meter stick balances on a fulcrum placed at the 40 cm mark when a weight W is placed at 30 cm mark. What is the weight
1. 2 answers
2. asked by Vy
3. 2,958 views
Barone’s Italian Restaurant advertises that its customers are much happier than the customers of its main competitors. The
1. 14 answers
2. asked by Lily
3. 2,836 views
two blocks of masses m1 and m2 (m1>m2) are placed on a frictionless table in contact with each other. A horizontal force of
1. 1 answer
2. asked by Jack
3. 2,723 views
Children in a tree house lift a small dog in a basket 4.90m up to their house. If it takes 201J of work to do this, what is the
1. 4 answers
2. asked by Anonymous
3. 2,633 views
How do you find the three ordered pairs that satisfy this equation Y = 3x - 4.How do you graph the line Y = 5x - 4. How do you
1. 5 answers
2. asked by Linda
3. 2,502 views
How does the bond that forms between Na and Cl differ from a bond that forms between N and Cl?
1. 1 answer
2. asked by Boo Boo
3. 2,345 views
You submerge 100 grams of steel in 200 grams of water. If the steel has an initial temperature of 80°C and the water has an
1. 1 answer
2. asked by Connor
3. 2,220 views
For the diprotic weak acid H2A Ka1=2.1x10^-5 and Ka2=5.5x10^-7. What is the pH of a 0.0800M solution of H2A? What are the
1. 1 answer
2. asked by ice cream
3. 2,188 views
Find the slope m of the tangent to the curvey = 3/√ x at the point where x = a > 0
1. 3 answers
2. asked by Anonymous
3. 2,132 views
Find a. fogb. gof c. fof d. gog for each function f(x)=4-x g(x)=3x-5
1. 4 answers
2. asked by Reece
3. 2,000 views
A sample containing .347 moles of an element has a mass of 39.00 g. What is the element?
1. 1 answer
2. asked by Ah
3. 1,875 views
A 52-kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. Neglect air
1. 2 answers
2. asked by monic
3. 1,856 views
The aircraft has a take-off mass of 320 000 kg. Each of the 4 engines can produce a maximum force of 240 kN.calculate the
1. 2 answers
2. asked by unknown
3. 1,809 views
suppose y=√(2x+1), where x and y are functions of t.a)if dx/dt=3, find dy/dt when x=4 b)if dy/dt=5, find dx/dt when x=12
1. 1 answer
2. asked by Chelle
3. 1,790 views
The bunny is initially hopping east at 7 m/s when it first sees the fox. Over the next half second the bunny changes its
1. 1 answer
2. asked by Nellie
3. 1,691 views
A total of 16 mice are sent down a maze, one by one. From previous experience, it isbelieved that the probability a mouse turns
1. 1 answer
2. asked by please help
3. 1,670 views
Ramundus is making a xylophone. So far, he has bars that are 1 3/4 feet 1 7/12 feet and 1 2/3 feet long. What is the length of
1. 9 answers
2. asked by Jerald
3. 1,635 views
Angel Falls in southeastern Venezuela is the highest uninterrupted waterfall in the world, dropping 979 m (3212 ft). Assume that
1. 1 answer
2. asked by Nellie
3. 1,592 views
A charge of -2.73 μC is fixed in place. From a horizontal distance of 0.0465 m, a particle of mass 9.50 x 10-3 kg and charge
1. 1 answer
2. asked by derek
3. 1,549 views
A car enters an interstate highway 15 mi north of a city.The car travels duenorth at an average speed of 62.5 mi/h.Write an
1. 2 answers
2. asked by aia
3. 1,529 views
copper metal reacts with nitric acid. assume that the reaction is 3Cu(s) + 8HNO3(aq) ——> 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l).
1. 1 answer
2. asked by robert
3. 1,501 views
slope and y intercept form of these two problems?Y-5=1/3(x-9) 2y+6a-4x=0
1. 2 answers
2. asked by Carly
3. 1,497 views
X needs to find the density of a cube. Each side of the cube measures 3 cm and the mass of the cube is 12 g. What is the
1. 6 answers
2. asked by jim
3. 1,475 views
what is 3.65 rounded to the nearest hundreth?
1. 3 answers
2. asked by anthony
3. 1,412 views
A rocket moves upward, starting from rest with an acceleration of 32.0 m/s2 for 3.27 s. It runs out of fuel at the end of the
1. 1 answer
2. asked by Apple
3. 1,412 views
Suppose that a senior driving a Pontiac zooms out of a darkened tunnel at 39.4 m/s. She is momentarily blinded by the sunshine.
1. 1 answer
2. asked by Anonymous
3. 1,347 views
Video rental Store A charges a membership fee of $25 and $2 for each movie rental.Video rental store b charges a membership fee
1. 2 answers
2. asked by Amy
3. 1,344 views
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two
1. 1 answer
2. asked by Mk
3. 1,320 views
How do you become a tutor on Jiskha Homework Help
1. 3 answers
2. asked by jman
3. 1,239 views
Why does the sun and moon appear to be the same size when viewed from earth.My answer is because the sun is bigger than the
1. 1 answer
2. asked by Americal
3. 1,199 views
determine the tension in each cable below. draw a force diagram for the system before solving the problem. Case A- ball
1. 0 answers
2. asked by Madison
3. 1,180 views
A living room set lists for $10,800 and carries a trade discount of 20 percent. Freight (FOB shipping point) of $60 is not part
1. 1 answer
2. asked by lois11952
3. 1,158 views
Hello!A 22.0 L cylinder containing helium gas at a pressure of 28.1 atm is used to fill a weather balloon in order to lift
1. 1 answer
2. asked by Anonymous
3. 1,154 views
Two mineral samples have the same mass. Which of the following statements is Ture?A. They don't have same density. B. They have
1. 1 answer
2. asked by jim
3. 1,154 views
Hi! So for my education class I need to write a sample Lesson Plan. The subject/topic can be anything. Any ideas on what to
1. 4 answers
2. asked by y912f
3. 1,117 views
2. A new common stock issue paid a $1.50 dividend last year. The par value of the stock is $25, and earnings per share have
1. 0 answers
2. asked by Anonymous
3. 1,117 views
compare the emission color of lithium to that of potassium .what can you conclude about these two elements and the energy levels
1. 1 answer
2. asked by john
3. 1,115 views
Calculate the amount of heat in joules required to heat 43 grams of water from 28 degrees celcius to the normal boiling point
1. 1 answer
2. asked by Anonymous
3. 1,086 views
Helpa constant force equal to (5i+2j)N moves a particle through a displacement S=(2i+3j). Calculate the workdone by the force.
1. 1 answer
2. asked by Fiyin
3. 1,078 views
You wish to heat 30 kg of water from 60°C to 80°C. How many kcal of heat are necessary to do this? To how many kJ does this
1. 1 answer
2. asked by LeAnne
3. 1,059 views
Question as follows:75.0g tartaric acid in 1 Liter is what molarity(moles/liter) mw=150.087 g/mol M1= 25 ml tartaric solution is
1. 2 answers
2. asked by Cicily
3. 1,055 views
a 96 kg clock initially at rest on a horizontal floor requires a 605 N horizontal force to set it in motion. After the clock is
1. 2 answers
2. asked by Susan
3. 1,041 views
Hudson is already 40 miles away from home on his drive back to college. He is driving 65 mi/hr. Write an equation that models
1. 1 answer
2. asked by Maia
3. 1,039 views
A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of
1. 1 answer
2. asked by Anna again...help!
3. 1,021 views
A clear explanation of how alcoholism is a human factor that may cause ill health,accidents,crises or disaster
1. 1 answer
2. asked by Jessicah
3. 1,020 views
trying to study but stuck with this one.Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of
1. 1 answer
2. asked by alex
3. 1,018 views
Why did slavery became a part of American culture and identity?
1. 1 answer
2. asked by Darcy
3. 1,003 views
A daring stunt woman sitting on a tree limbwishes to drop vertically onto a horse galloping under the tree. The constant speed
1. 1 answer
2. asked by Asi
3. 996 views
A 2.1 103-kg car starts from rest at the top of a 5.9-m-long driveway that is inclined at 19° with the horizontal. If an
1. 1 answer
2. asked by monic
3. 990 views
Did Beatrix Potter go to school or did she learn from private tutors only?
1. 1 answer
2. asked by rfvv
3. 982 views
Write a two-column proof.Given: 7y = 8x – 14; y = 6 Prove: x = 7
1. 1 answer
2. asked by Joel
3. 971 views
Find (fog)(2)f(x)=Squareroot 4-x; g(x)=1-3x^2 Find (gof)(-2) for the same problem.
1. 1 answer
2. asked by Taylor
3. 970 views
A certain weak base has a Kb of 9.00x10^-7. What concentration of this base will produce a pH of 10.30?
1. 1 answer
2. asked by encee
3. 962 views
Let f(x) be polynomial function. Explain in your own words how to use the Rational Zero Theorem to find the real zeros of f (x).
1. 1 answer
2. asked by ladybug
3. 961 views
When you take your 1200 kg car out for a spin, you go around a corner of radius 54.5 m with a speed of 16.2 m/s. The coefficient
1. 1 answer
2. asked by Anonymous
3. 958 views
help!Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the
1. 1 answer
2. asked by alex
3. 957 views
To what temperature must a gas sample initally at 13 degrees be raised in order for the avarage energy of its molecules to
1. 1 answer
2. asked by Anonymous
3. 955 views
You drop a ball from a height of 1.9m , and it bounces back to a height of 1.3m .a)What fraction of its initial energy is lost
1. 2 answers
2. asked by Andrew
3. 939 views
in a reaction of 3Cu(s)+ 8HNO3(aq)�¨ 3Cu(NO3)2(aq) +2NO(g) + 4H2O(l). if 5.58 grams of Cu(no3)2 is made how many grams of
1. 1 answer
2. asked by robert
3. 932 views
A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 12.0 N force directed 25.0° below
1. 1 answer
2. asked by monic
3. 931 views
A mass of 2.6 kg lies on a frictionless table, pulled by another mass of 4.7 kg under the influence of Earth’s gravity.The
1. 1 answer
2. asked by Natalie
3. 919 views
was ist ein mittel wert
1. 0 answers
2. asked by priyanka
3. 918 views
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its
1. 0 answers
2. asked by Dorota
3. 912 views
please help :/Three charges are fixed to an xy coordinate system. A charge of +25C is on the y axis at y = +2.7 m. A charge of
1. 1 answer
2. asked by antonio
3. 903 views
Name a number with decimal hundredths that rounds up to the nearest whole number but down to the nearest tenth
1. 2 answers
2. asked by susan
3. 896 views
How did physical features affect migration and the distribution of culture groups in the Pacific Island Region?
1. 35 answers
2. asked by rawr... im a dinosaur.... rawr
3. 884 views
A car with a mass of 1797 kg is moving to the right at a constant velocity of 2.50 m/s. What is the net force acting on the car?
1. 1 answer
2. asked by Emma
3. 846 views
A 800. kg car starts from rest and accelerates uniformly to 19.0 m/s in 22.0 s. Assume that air resistance remains constant at
1. 1 answer
2. asked by Anonymous
3. 836 views
The aircraft has a take-off mass of 320 000 kg. Each of the 4 engines can produce a maximum force of 240 kN.calculate the
1. 3 answers
2. asked by unknown
3. 816 views
A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas
1. 1 answer
2. asked by Anonymous
3. 815 views
Case Study..... Judy was 18 when the terrible crash happend. While judi was returning home from work, a driver ran a red light
1. 0 answers
2. asked by Arron
3. 812 views
Suppose that the 1.3 km span of the Golden Gate Bridge had no expansion joints. Calculate how much longer the bride would be if
1. 1 answer
2. asked by Anonymous
3. 806 views
Rudulpho bought a set of wrenches to work on his car. He bought the following sizes 7/8 3/8 3/4 and 1/2. he wants to hang these
1. 4 answers
2. asked by Jerald
3. 805 views
analyze the importance of collecting and reviewing data before implenting. Specific interventions to address challenging.
1. 3 answers
2. asked by bowser
3. 802 views
A 1,440-N crate is being pushed across a level floor at a constant speed by a force vector F of 380 N at an angle of 20.0°
1. 1 answer
2. asked by Uzy
3. 780 views
One mole of an ideal gas at 25C and 1 bar is allowed to expand adiabatically against a constant external pressure of 1.00 bar
1. 0 answers
2. asked by Dorota
3. 779 views
A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of
1. 2 answers
2. asked by Anna
3. 775 views
A 5.84kg box sits on a ramp that is inclined at 35.2degrees above the horizontal. The coefficient of kinetic friction between
1. 1 answer
2. asked by helpless
3. 753 views
Let y=cos x+sin x/cos x -sin x. Find dy/dx
1. 1 answer
2. asked by Anonymous
3. 753 views
A company placed $1,000,000 in three different accounts. It placed part in short term notes paying 4.5% per year, twice as much
1. 1 answer
2. asked by Marilu
3. 737 views
A toboggan approaches a snowy hill moving at 12.9 . The coefficients of static and kinetic friction between the snow and the
1. 1 answer
2. asked by ty
3. 736 views
enough of a monoprotic acid is dissolved in water to produce a 0.0111M solution. The pH of the resulting solution is 2.62.
1. 1 answer
2. asked by airo
3. 731 views
In what way does the setting of a small town during the Great Depression impact the characters and plot of "Gumption"?a. The
1. 1 answer
2. asked by Ashley
3. 717 views
if triangle mnp approximate triangle srt with proportionality factor k, show that if ma and sb are altitudes of the given
1. 0 answers
2. asked by lara
3. 716 views
A toy cannon fires a .11 kg shell with initial velocity vi=10m/s in the direction 52 degrees above the horizontal. The shell's
1. 1 answer
2. asked by JJ
3. 716 views
I need to know more about christmas island. I have research and i not getting any info on education and interesting fact in case
1. 1 answer
2. asked by #####rena
3. 710 views
A 2.1 103-kg car starts from rest at the top of a 5.9-m-long driveway that is inclined at 19° with the horizontal. If an
1. 1 answer
2. asked by heather
3. 707 views
Snowballs are thrown with a speed of 12.5 m/s from a roof 7.8 m above the ground. Snowball A is thrown straight downward;
1. 0 answers
2. asked by HELP
3. 699 views

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