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Most Popular Questions

Write the electron configuration for the following ion.V3+ I got 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2. In simplified form, I got
1. 5 answers
2. asked by Anonymous
3. 36,323 views
"How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2?N2 + 3H2 ---> 2NH3 ==> 28 g N2 x (1 mol
1. 11 answers
2. asked by Emily
3. 27,984 views
The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOHsolution. What is the
1. 5 answers
2. asked by Charlie
3. 20,275 views
a ball is thrown straight upward and returns to the thrower's hand after 3.00s in the air. A second ball is thrown at an angle
1. 1 answer
2. asked by tani
3. 20,235 views
What is a simile, idiom, or metaphor for relief?
1. 29 answers
2. asked by Dani
3. 20,124 views
A runner hopes to complete the 10,000m run in less than 30 minutes. After exactly 27 minutes, there are still 1100m to go. The
1. 2 answers
2. asked by Zack
3. 19,120 views
LIST AND EXPLAIN FIVE USES OF SCIENCE
1. 48 answers
2. asked by KATE
3. 18,824 views
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the
1. 3 answers
2. asked by Katherine
3. 17,441 views
1.what is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a Petri dish at a constant
1. 5 answers
2. asked by y912f
3. 17,011 views
a jet pilot takes his aircraft in a vertical loop.a) if the jet is moving at a speed of 2000 km/h at the lowest point of the
1. 2 answers
2. asked by jeffery
3. 16,993 views
Rank these liquids by their expected surface tension.Rank from greatest to least surface tension. 1.CH3CH2OCH3 2.CH3CH2CH2-OH
1. 4 answers
2. asked by Saira
3. 16,737 views
a child sitting 1.10 m from the center of a merry go round moves with a speed of 1.25 m/s. calculate the centripetal
1. 3 answers
2. asked by Sasha
3. 16,204 views
6) How many significant figures should be retained in the result of the following calculation?12.00000 x 0.9893 + 13.00335 x
1. 6 answers
2. asked by Loi
3. 15,816 views
A 75 kg box slides down a 25.0 degree ramp with an acceleration of 3.60 m/s^2.Find coefficient between the box and the ramp.
1. 6 answers
2. asked by Terrence Eko
3. 15,393 views
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0
1. 1 answer
2. asked by Mary
3. 15,337 views
The drawing shows a large cube (mass = 25 kg) being accelerated across a horizontal frictionless surface by a horizontal force .
1. 4 answers
2. asked by Litany
3. 14,830 views
1)what does the term "disposal of fullness" mean?2)What are 4 methods of controlling fullness and how is that method done?
1. 20 answers
2. asked by kerry-Ann
3. 14,076 views
what do you call it when someone pays back a loan quickly?thanks for any help
1. 13 answers
2. asked by maryanna
3. 14,073 views
A 2.0 kg mass starts from rest and slides down an inclined plane 8.0 X 10^-1 m long in .50s. what net force is acting on the
1. 3 answers
2. asked by physics
3. 13,749 views
a model of a helicopter rotor has four blades, each 3.40 m in length from the central shaft to the tip of the blade. The model
1. 1 answer
2. asked by Sarah
3. 13,583 views
A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0. °C. What is the new
1. 3 answers
2. asked by Anonymous
3. 13,434 views
When we look at a leaf, we see the colors of light that are reflected off its surface. How does this explain there relatively
1. 2 answers
2. asked by Lena
3. 13,365 views
x is a random variable with the probability function: f(X) = x/6for x = 1, 2 or 3 the expected value of X is?
1. 3 answers
2. asked by Shellie
3. 13,142 views
A selenium atom (Se) would form its moststable ion by the 1. loss of 2 electrons. 2. gain of 1 electron. 3. loss of 1 electron.
1. 6 answers
2. asked by Randy
3. 13,045 views
When Albert flips open his mathematics textbook, he notices that the product of the page numbers of the two facing pages is 156.
1. 6 answers
2. asked by Angie
3. 12,753 views
Identify any incorrect formulas. explain your answer.a. Mg2(SO4)3 b. Rb3As c. BeCl3 d. NaF
1. 4 answers
2. asked by Minny
3. 12,692 views
Arrange the following amines in order of decreasing base strength. NH3, NH2Br, CH3NH2, (CH3)2NH
1. 3 answers
2. asked by help!!!
3. 12,680 views
A 1500kg car skids to a halt on a wet road where μk= 0.53. How fast was the car traveling if it leaves 62-m-long skid marks?
1. 1 answer
2. asked by Angela
3. 12,662 views
What was the purpose of Hammurabi's Code
1. 47 answers
2. asked by Tom
3. 12,512 views
A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28degrees
1. 5 answers
2. asked by Ashley
3. 12,403 views
An 80- quarterback jumps straight up in the air right before throwing a 0.43- football horizontally at 15 . How fast will he be
1. 3 answers
2. asked by Lola PLEASE HELP!
3. 12,396 views
what is the title of this picture?
1. 12 answers
2. asked by Jena
3. 12,347 views
Calculate the delta H for the reactionN2H4(l)+ O2(g) --> N2(g) + 2H20(l) Given the following data: 2NH3(g) + 3N20(g) --> 4N2(g)
1. 3 answers
2. asked by kilo
3. 12,230 views
Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen
1. 4 answers
2. asked by lyne
3. 12,218 views
In a hydroelectric dam, water falls 26.0 m and then spins a turbine to generate electricity. What is ∆U of 1.0 kg of water?
1. 3 answers
2. asked by Zach
3. 12,216 views
write a net ionic equation for?2KI + Pb(NO3)2 ==>2KNO3 + PbI2 This is my answer below 2I^- + NO3==>2No3 +I2^- can anyone tell me
1. 2 answers
2. asked by Aparicio
3. 11,948 views
Sodium Chloride is the LEAST soluble in which of the following liquids?a. H2O b. CCl4 c. HF d. CH3OH e. CH3OOH I know NaCl is a
1. 2 answers
2. asked by Nikki
3. 11,906 views
Consider the following equilibrium process at 700°C:2H2 + S2 ↔ 2H2S Analysis shows that there are 2.50 moles of H2,
1. 4 answers
2. asked by Chris
3. 11,654 views
in a class, the ratio of boys to girls is 3/4. if there are 12 boys in the class, how many girls are there
1. 11 answers
2. asked by domonique
3. 11,627 views
Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond
1. 4 answers
2. asked by help
3. 11,522 views
The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal
1. 9 answers
2. asked by matt
3. 11,390 views
Suppose a 65-kg boy and a 45-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration
1. 9 answers
2. asked by Liz
3. 11,275 views
In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge?a. 1s b. 2s c. 2p d. 3s
1. 6 answers
2. asked by C.
3. 11,042 views
A FIREWORKS ROCKET IS MOVING WITH A SPEED OF 45.0 M/S. THE ROCKET SUDDENLY BREAKS INTO TWO PIECES OF EQUAL MASS, WHICH FLY OFF
1. 3 answers
2. asked by LIZ
3. 10,974 views
What is the ionic and net ionic equation for Na2CO3 + 2 HNO3 -> 2 NaNO3 + H2O + CO2 (g)This is what i have so far...
1. 3 answers
2. asked by Christina
3. 10,781 views
You are walking toward the back of a bus that is moving forward with a constant velocity. Describe your motion relative to the
1. 7 answers
2. asked by Twilight lover
3. 10,778 views
A 55 kg ice skater is at rest on a flat skating rink. A 198 N horizontal forceis needed to set the skater in motion.However,
1. 5 answers
2. asked by Melissa
3. 10,600 views
10. A cannon elevated at an angle of 35º to thehorizontal fires a cannonball, which travels the path shown in the diagram
1. 8 answers
2. asked by Physics Student need help
3. 10,563 views
when propane gas C3H8, is burned with oxygen, the products are carbon dioxide and water. Write an unbalanced formula equation
1. 4 answers
2. asked by kate
3. 10,509 views
A regression analysis between sales (in $1000) and advertising (in $100) resulted in the following least squares line: = 75 +
1. 4 answers
2. asked by Danny
3. 10,444 views
A wave of amplitude .30 m interferes with a second wave of amplitude .20 m. What are the largest and smallest displeacements
1. 1 answer
2. asked by Lee
3. 10,373 views
At 900 K the following reaction has Kp=0.345; 2 SO2(g) + O2 (g) -> 2 SO3 (g)In an equilibrium mixture the partial pressures of
1. 4 answers
2. asked by Anonymous
3. 10,320 views
A potter’s wheel with rotational inertia of 45 kg m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the
1. 2 answers
2. asked by Sarah
3. 10,267 views
A swimming pool is 3 feet deep in the shallow end. The bottom of the pool has a steady downward drop of 12 degrees toward the
1. 3 answers
2. asked by Ms. Suzie
3. 10,179 views
A 0.400 kg ball is shot directly upward at initial speed 40.0 m/s. What is its angular momentum about a point 2.0 m horizontal
1. 5 answers
2. asked by jane
3. 9,877 views
How much longer (percentage) is a one-mile race than a 1500- race?
1. 10 answers
2. asked by Carrie
3. 9,858 views
which unit is equivalent to meters per second?a. hz*s b. hz*m c. s/hz d. m/hz
1. 4 answers
2. asked by jaden
3. 9,838 views
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5 10-3, Ka2 = 8 10-8, and Ka3 = 6 10-10. Calculate [H+], [OH -], [H3AsO4],
1. 15 answers
2. asked by Cab
3. 9,778 views
Find the area under the standard normal curve to the right of z = -1.25.
1. 3 answers
2. asked by Melissa
3. 9,676 views
A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec along a
1. 2 answers
2. asked by Z32
3. 9,651 views
A rectangular lot is bordered on one side by a stream and on the other 3 sides by 600m of fencing. The area is a maximum.
1. 2 answers
2. asked by Anonymous
3. 9,627 views
The population of a region is growing exponentially. There were 40 million people in 1980 (when t=0) and 50 million people in
1. 2 answers
2. asked by Z32
3. 9,605 views
a 330 kg piano slides 3.6 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel
1. 5 answers
2. asked by Nat
3. 9,595 views
what does these quote mean?1.)"my life for itself and not for a spectacle" 2.)An institution is the lengthened shadow of a man.
1. 5 answers
2. asked by jess
3. 9,582 views
A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then
1. 9 answers
2. asked by Sarah
3. 9,549 views
What did the spanish farmer say to his chicken
1. 25 answers
2. asked by joe
3. 9,484 views
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.00 m/s and angle
1. 3 answers
2. asked by Vico
3. 9,483 views
A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a)
1. 3 answers
2. asked by Sarah
3. 9,320 views
What is the main difference between Baroque and Classical music? I think barouge music is based on emotion but am not sure.
1. 4 answers
2. asked by heather
3. 9,318 views
Does baking soda and vinegar have a complete ionic equation?HC2H3O2 (aq) + NaHCO3 ===> NaC2H3O2(aq) +
1. 1 answer
2. asked by Lou
3. 9,303 views
an open box contains 80cm^3 and is made from a square piece of tinplate with 3cm squares cut from each of its 4 corners. Find
1. 3 answers
2. asked by Cynthia
3. 9,297 views
Write formula equations and net ionic equations for the hydrolysis of sodium carbonate in water.Responses Chemistry - DrBob222,
1. 5 answers
2. asked by anonymous
3. 9,223 views
What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a 6.00 M KCl solution to a volume of 0.500 L?A
1. 2 answers
2. asked by Coug
3. 9,139 views
Is it necessary for us to find new solutions to problems? Many people may argue that we don¡¯t need to since we are already
1. 2 answers
2. asked by Mercedes
3. 9,137 views
Can any obstacle or disadvantage be turned into something good?Obstacles, which are the essential part of our lives, often seem
1. 14 answers
2. asked by Mercedes
3. 9,049 views
Find the variance for the given data. Round your answer to one more decimal place than the original data.{8.5, 4.5, 8.8, 6.9,
1. 7 answers
2. asked by Anonymous
3. 9,003 views
Which of the following is most likely to LOSE electrons when forming an ion?a. F b. P c. S d. Rh e. Se
1. 4 answers
2. asked by Jenny
3. 8,966 views
A cylinder that has a 40.0 cm radius and is 50.0 cm deep is filled with air at 20.0°C and 1.00 atm. A 21.0 kg piston is now
1. 4 answers
2. asked by Jessi
3. 8,965 views
A man can throw a ball a maximum horizontaldistance of 97.8 m. The acceleration of gravity is 9.8 m/s2 . How far can he throw
1. 4 answers
2. asked by Letisha
3. 8,959 views
The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 amu.
1. 7 answers
2. asked by lyne
3. 8,951 views
A man launches his boat from point A on a bank of a straight river, 3 km wide, and wants to reach point B, 2 km downstream on
1. 2 answers
2. asked by Avilene
3. 8,948 views
Rate of ChangeYou are given the dollar value of a product in 2008 and the rate at which the value of the product is expected to
1. 7 answers
2. asked by kim
3. 8,939 views
there are ___ molecules of methane (CH4) in 0.123 moles of methane?a. 16 b. 0.773 c. 2.46 x 10 -2 d. 7.40 x 10 22 e. 6.02 x 10
1. 5 answers
2. asked by Pandorah
3. 8,891 views
i need to finish the riddle.did you hear about... who knows this?
1. 34 answers
2. asked by faith
3. 8,847 views
what forms of energy are involved in the following situations? (choices: kinetic energy, potential energy - gravitational
1. 5 answers
2. asked by PB and apples
3. 8,699 views
A race car moves such that its position fits the relationshipx = (5.0 m/s)t + (0.75 m/s3)t3 where x is measured in meters and t
1. 6 answers
2. asked by annemarie
3. 8,695 views
Which of the problems in the construction of the CPI might be illustrated by each of the following situations? Explain.a. the
1. 4 answers
2. asked by SARA
3. 8,690 views
A man 2m tall walks away from a lamppost whose light is 5m above the ground. If he walks at a speed of 1.5m/s, at what rate is
1. 7 answers
2. asked by sh
3. 8,679 views
A dry mixture of kno3 and sand could be separated by1. adding water to the mixture and filtering 2. adding water to the mixture
1. 2 answers
2. asked by .
3. 8,669 views
Convert the following into a balanced equation:Liquid disilicon hexachloride reacts with water to form solid silicon dioxide,
1. 2 answers
2. asked by Anonymous
3. 8,630 views
A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 140 . How far does the
1. 2 answers
2. asked by colleen
3. 8,628 views
Two balloons are filled with an equal volume of air. One is put in the refrigerator for one hour, while the other is heated in a
1. 10 answers
2. asked by Nathan
3. 8,569 views
Methane, CH4 burns in oxygen gas to form carbon dioxide and water. How many moles of carbon dioxide will be formed from 8.0g of
1. 3 answers
2. asked by Denmark
3. 8,560 views
Find the values of s in the interval [0,pi/2] that make the statements true.1. sin s=0.75438373 2. cos s=0.74241049 3. cot
1. 5 answers
2. asked by y912f
3. 8,553 views
In the game of roulette, a steel ball is rolled onto a wheel that contains 18 red, 18 black, and 2 green slots. If the ball is
1. 3 answers
2. asked by Jordana
3. 8,544 views
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by
1. 1 answer
2. asked by Katie
3. 8,507 views
Waht kind of music do they listen to in Thailand? I'm doing a project about Thailand and as an idea, I thought of either playing
1. 1 answer
2. asked by Gabriella
3. 8,476 views
A 59 g particle is moving to the left at 29 m/s. How much net work must be done on the particle to cause it to move to the right
1. 2 answers
2. asked by Haley
3. 8,347 views
A small block on a frictionless horizontal surface has a mass of 2.50×10−2 Kg. It is attached to a massless cord passing
1. 4 answers
2. asked by Sarah
3. 8,328 views
An amusement park ride consists of a rotating circular platform 8.26 m in diameter from which 10 kg seats are suspended at the
1. 3 answers
2. asked by bubba
3. 8,286 views

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