Ask a New Question

Questions and answers by

Katie

Questions (1,201)

The rate constant for this first-order reaction is 0.320 s–1 at 400 °C.A--> Products How long (in seconds) would it take for
1. 3 answers
2. 13,392 views
The reaction described by this equationO3(g) + NO(g) -- O2(g) + NO2(g) has the following rate law at 310 K. rate of reaction =
1. 4 answers
2. 5,336 views
A vibration platform oscillates up and down with an amplitude of 8.8 cm at a controlled variable frequency. Suppose a small rock
1. 1 answer
2. 619 views
I really don't understand rate law. Could you explain that and help with this problem please?Determine the average rate of
1. 2 answers
2. 990 views
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 7.20 s. The elastic
1. 3 answers
2. 3,355 views
A spherically symmetric object, with radius R = 0.50 m and mass M = 1.3 kg, rolls without slipping across a horizontal floor,
1. 2 answers
2. 3,718 views
The vertices of a triangle are P(–4, 1), Q(–2, –8), and R(8, –1). Name the vertices of the image reflected across the
1. 4 answers
2. 1,313 views
integreal 3cot^2 4xdx
1. 1 answer
2. 347 views
Two children, each with mass m = 11.0 kg, sit on opposite ends of a narrow board with length L = 4.5 m, width W = 0.30 m, and
1. 1 answer
2. 2,112 views
Three particles, each of mass 3.0 kg, are fastened to each other and to a rotation axis by three massless strings, each 0.360 m
1. 2 answers
2. 1,622 views
The following objects are released from rest and allowed to roll down an inclined plane. Rank the objects by the order of which
1. 1 answer
2. 518 views
A ball of radius 0.211 m rolls along a horizontal table top with a constant linear speed of 3.41 m/s. The ball rolls off the
1. 1 answer
2. 858 views
A train is rounding a circular curve whose radius is 1.87E+2 m. At one instant, the train has an angular acceleration of 1.51E-3
1. 2 answers
2. 1,896 views
A race car, starting from rest, travels around a circular turn of radius 20.8 m. At a certain instant, the car is still
1. 1 answer
2. 726 views
A lunch tray is being held in one hand, as the figure below illustrates.The mass of the tray itself is 0.182 kg, and its center
1. 0 answers
2. 678 views
The subject of this unit is the role of those mythologies which determine the meaning of being male or female in American
1. 3 answers
2. 517 views
What is the value of Kf for the formation of the ammine M(NH3)2+ ? Assume the concentration of M(NH3)n+ = 0.0020 MThe data were
1. 0 answers
2. 688 views
A solid rod of mass M = 1.00 kg and length L = 85 cm is suspended by two strings, each with a length d = 83 cm (see Figure), one
1. 0 answers
2. 669 views
The mass of the tray itself is 0.182 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.08
1. 0 answers
2. 482 views
A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point
1. 1 answer
2. 783 views
A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point
1. 0 answers
2. 908 views
The rope of a swing is 3.2 m long. Calculate the angle from the vertical at which a 95-kg man must begin to swing in order to
1. 2 answers
2. 700 views
A constant force of 40.7 N, directed at 29.9° from horizontal, pulls a mass of 13.7 kg horizontally a distance of 2.93 m.
1. 1 answer
2. 607 views
An automobile tire has a radius of 0.455 m, and its center moves forward with a linear speed of v = 15.7 m/s. Determine the
1. 1 answer
2. 500 views
Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the
1. 0 answers
2. 662 views
Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
1. 2 answers
2. 482 views
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11
1. 3 answers
2. 755 views
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
1. 0 answers
2. 1,250 views
Prove (3cosθ-4sinθ)^2+(4cosθ+3sinθ)^2=25
1. 1 answer
2. 596 views
Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
1. 0 answers
2. 382 views
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11
1. 0 answers
2. 576 views
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
1. 0 answers
2. 504 views
Q1:Prove cos^2t+4cost+4/cost+2=2sect+1/sect Q2: A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship
1. 0 answers
2. 716 views
prove sin(α+β)sin(α-β)=cos^2β-cos^2αplease help... this is the only one I didn't understand out of all my homework...
1. 1 answer
2. 884 views
I'm looking for a short summary of The Great Gatsby that is just a few sentences, but I can only find long ones!
1. 2 answers
2. 426 views
Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the
1. 0 answers
2. 923 views
What are some books that could instruct someone on the world we live in?
1. 1 answer
2. 423 views
In the book Frankenstein, the monster reads three books that he found in the forest. He learned about life from these books. My
1. 1 answer
2. 672 views
(cos^2t+4cos^2+4)/(cost+2)=(2sect+1)/sect
1. 1 answer
2. 417 views
Prove (cos^2t+4cos^2+4)/(cost+2)=2sect+1)/sect
1. 0 answers
2. 448 views
prove(sinx/cosx+1)+(cosx-1/sinx)=0Please help asap!!!!! PLEASE
1. 1 answer
2. 3,223 views
prove(sinx/cosx+1)+(cosx-1/sinx)=0
1. 1 answer
2. 365 views
Wheel A of radius ra = 14.6 cm is coupled by belt B to wheel C of radius rc = 30.2 cm. Wheel A increases its angular speed from
1. 2 answers
2. 598 views
In a game of pool, the cue ball strikes another ball initially at rest. After the collision, the cue ball moves at 4.15 m/s
1. 1 answer
2. 1,738 views
A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of
1. 3 answers
2. 1,977 views
Two identical steel balls, each of mass 5.0 kg, are suspended from strings of length 29 cm so that they touch when in their
1. 1 answer
2. 2,122 views
Determine for each of the following statements whether it is always true or can be false.In a perfectly inelastic collision, the
1. 1 answer
2. 643 views
Calculate the standard reduction potential for the reaction of Cu(III) to Cu(II)Use the following data: 1) Cu^+3 + 2e^- -> Cu^+,
1. 0 answers
2. 788 views
Current is applied to an aqueous solution of lithium sulfide. What is the cathode and what is the anode?
1. 1 answer
2. 1,284 views
Calculate the cell potential for the following reaction as written at 53 °C, given that [Zn2 ] = 0.862 M and [Ni2 ] = 0.0110 M.
1. 0 answers
2. 558 views
Calculate the standard free-energy change for the following reaction at 25 °C.2Au^3+(aq) + 3Ni(s) -->2Au(s) + 3Ni^2+(aq)
1. 7 answers
2. 6,388 views
The voltage generated by the zinc concentration cell described by,Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 23.0 mV at 25
1. 2 answers
2. 685 views
Rank these species by their ability to act as an oxidizing agent.Na^+ I2 Cr^3+ F2 Put best oxidizing agent first and continue to
1. 3 answers
2. 3,387 views
The drawing below shows two laboratory carts (each has a mass of 1.0 kg) X and Y in contact with a compressed exploder spring
1. 0 answers
2. 559 views
Use this equation to estimate typing speed, S=w/5-2e, where S is the accurate typing speed, w is the number of words typed in 5
1. 1 answer
2. 793 views
Na subscript 2SO subscript 4 + CaCl subscript 2 produces CaSO subscript 4 + NaClPlease help me balance this equation and show
1. 1 answer
2. 574 views
find the equation of the line tangent to f(x)=2x^3-x^2+1 at x=2.write in point slope form
1. 0 answers
2. 415 views
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin
1. 0 answers
2. 691 views
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin
1. 0 answers
2. 764 views
A 220-g ball strikes a wall with a speed of 7.0 m/s and rebounds with only 37% of its kinetic energy. What is the speed of the
1. 2 answers
2. 1,137 views
a) A set of crash tests consists of running a test car moving at a speed of 12.6 m/s (27.7 m/h) into a solid wall. Strapped
1. 0 answers
2. 612 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. 741 views
Does Victor have an obligation to the monster? Use evidence from Chapters 9-14 of Volume 2.
1. 1 answer
2. 356 views
Does Victor have an obligation to the monster in Frankenstein? Why?
1. 1 answer
2. 381 views
√5sec²x-2secx=5i have to solve this equation on the interval [0, 2π).
1. 1 answer
2. 485 views
The string in the Figure is L = 135.0 cm long and the distance d to the fixed peg P is 94.5 cm. When the ball is released from
1. 0 answers
2. 656 views
A 0.40-kg block slides along a small track with elevated ends and a flat central part. The flat part has a length L = 1.84 m.
1. 1 answer
2. 972 views
A stone with mass m = 2.3 kg is thrown vertically upward into the air with an initial kinetic energy of 190 J. The drag force
1. 2 answers
2. 986 views
Calucluate the pH of 100 mL of buffer that is 0.075 M NH4Cl and 0.175 M NH3 before and after the addition of 1.00 mL of 5.05 M
1. 1 answer
2. 369 views
Calucluate the pH of 100 mL of buffer that is 0.075 M NH4Cl and 0.175 M NH3 before and after the addition of 1.00 mL of 5.05 M
1. 1 answer
2. 968 views
With brakes fully applied, a 1660 kg car decelerates from a speed of 74.0 km/hr. What is the work done by the braking force in
1. 0 answers
2. 509 views
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in
1. 0 answers
2. 462 views
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in
1. 2 answers
2. 3,669 views
At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 6.30 atm, PB = 7.20 atm, PC = 6.40
1. 3 answers
2. 1,371 views
With brakes fully applied, a 1660 kg car decelerates from a speed of 74.0 km/hr. What is the work done by the braking force in
1. 0 answers
2. 567 views
A satellite moves on a circular earth orbit that has a radius of 6.68E+6 m. A model airplane is flying on a 16.3 m guideline in
1. 0 answers
2. 990 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. 1,030 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. 657 views
Write the balanced chemical equation for each of these reactions. Include phases. However, when additional aqueous hydroxide is
1. 1 answer
2. 667 views
Which of the following will be more soluble in an acidic solution than in pure water?AgBr Be(OH)2 RbClO4 CaCO3 PbSO4
1. 2 answers
2. 3,982 views
Silver chromate is sparingly soluble in aqueous solutions. The Ksp of Ag2CrO4 is 1.12× 10–12. What is the solubility (in
1. 2 answers
2. 1,332 views
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0510 g/L. What is the Ksp of this salt at this
1. 1 answer
2. 1,620 views
At 25 °C only 0.0580 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
1. 2 answers
2. 10,885 views
A generic salt, AB2, has a molar mass of 159 g/mol and a solubility of 3.30 g/L at 25 °C. What is the Ksp of this salt at 25
1. 1 answer
2. 707 views
Write the balanced chemical equation for each of these reactions. Include phases. When aqueous sodium hydroxide is added to a
1. 15 answers
2. 13,244 views
Copper(I) ions in aqueous solution react with NH3(aq) according toCu+(aq) + 2NH3(aq) -->Cu(NH3)2^+ Kf = 6.3x10^10 Calculate the
1. 1 answer
2. 1,599 views
At 25 °C only 0.0990 mol of the generic salt AB is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
1. 4 answers
2. 1,054 views
What additional information would be needed to calculate the rate in units of concentration per time?
1. 4 answers
2. 1,326 views
Two blocks with masses m1 = 20.7 kg and m2 = 55.5 kg, shown in the figure, are free to move. The coefficent of static friction
1. 0 answers
2. 606 views
20.7mL of ethanol (density=0.789g/mL) initially at 8.2 degrees Celsius is mixed with 37.1 mL of water (density=1.0g/mL)
1. 1 answer
2. 802 views
Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq)
1. 1 answer
2. 757 views
A cook wants to heat 1.10kg of water from 33 C to 100 C. If he uses the combustion of natural gas which is exothermic to heat
1. 2 answers
2. 1,417 views
Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq)
1. 2 answers
2. 1,092 views
A car that weighs 14600.0 N is initially moving at a speed of 58.0 km/hr when the brakes are applied and the car is brought to a
1. 0 answers
2. 620 views
the three major vessels of the portal triad are the hepatic artery, hepatic portal vein and bile duct.What is the location of
1. 0 answers
2. 853 views
Circle the term that does not belong in each of the following groupings.1. HC1 secretion Acetyicholine Histamine Secretin
1. 1 answer
2. 2,382 views
A ball is thrown horizontally from the roof of a building 29.7 m high at 39.6 m/s. (a) What is the vertical velocity of the ball
1. 0 answers
2. 460 views
I have to write an essay about whether or not Jonathan Swift's "A Modest Proposal" was effective as a satire.one quote i have is
1. 0 answers
2. 1,226 views
how is eating breakfast important to prevent fainting
1. 0 answers
2. 349 views
what are the physiological benefits of eating breakfast.what are the physiological occurances or causes of fainting (syncope).
1. 0 answers
2. 458 views

Pages

1
2
3
4
5
6
7
8
9
10

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025