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The rate constant for this first order reaction is 0.0470s-1 at 400 C.A to products After how many secs will 11.0% of the
1. 1 answer
2. 622 views
The rate constant for this first order reaction is 0.440s-1at 400 C.A to products How long(in seconds) would it take for the
1. 1 answer
2. 446 views
find the exact value of sin 11pi/12 using the sum or difference formula.
1. 2 answers
2. 4,194 views
Verify the identitycot2 beta/1+csc beta=1-sin beta/sin beta.
1. 1 answer
2. 1,117 views
No its not a typo but I did put the wrong activation energy. Its suppose to be a certain reaction has an activation energy of
1. 1 answer
2. 514 views
A certain reaction has an activation energy of 37.30 kj/mol. At what Kelvin temperature will the reaction proceed 3.00 times
1. 3 answers
2. 805 views
After 79 mins 20.0% of a compound has decomposed. What is the half life of this reaction assuming first-order kinetics?
1. 1 answer
2. 1,027 views
The rate constant for this first order reaction is 0.0470 s-1 at 400 C.A TO Products After how many seconds will 11.0% of the
1. 1 answer
2. 752 views
The rate constant for this first-order reaction is 0.440 s-1 at 400 C.A to products How long in seconds would it take for
1. 1 answer
2. 509 views
Determine the average rate of change of B from t=0s to t=352s.A to 2B Time Concentration of A (M) 0 0.670 176 0.385 352 0.100
1. 1 answer
2. 5,858 views
The rate of the following reaction is 0.480 M/s. What is the relative rate of change of each species in the reaction?A+3B=2C
1. 3 answers
2. 3,313 views
use the sum of difference formula what is sin(pi/2-5pi/3)?
1. 1 answer
2. 416 views
at 298 k, the Henry's law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen. at 298 k, what is the solubility of oxygen
1. 2 answers
2. 1,509 views
The boiling point of an aq solution 102.11 C. What is the freezing point?
1. 2 answers
2. 479 views
A solution of H2SO4 with a modal concentration 6.25m has a density of 1.300 g/ml. What is the molar concentration?
1. 2 answers
2. 1,098 views
what is the mole fraction of solute molality concertration for an aqueous solution that is 19% NaOH by mass?
1. 1 answer
2. 511 views
Given f(x)=-10x2-42x-17find f(x+h)
1. 1 answer
2. 1,021 views
Express the quadratic function y=-2/3x2-12x-11 in standard form?
1. 1 answer
2. 612 views
Given m(x)=7/5x2+9-2 what is the domain of m in set notation form?
1. 2 answers
2. 412 views
1. The vapor pressure, P of a certain liquid was measured at two temperatures, T. from this data:T(K) and P(kpa) 275 3.57 825
1. 2 answers
2. 1,058 views
1.The density of solid Fe is 7.87 g/cm3. What volume per atom of Fe?2.As a solid Fe adopts a body centered cubic unit cell. What
1. 1 answer
2. 2,290 views
A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times
1. 1 answer
2. 430 views
x+y=9.00.50x+0.20y=3.90 What is the value of x and y?
1. 1 answer
2. 4,104 views
x+y=9.00.50+0.20y=3.90 What is the valuse of x and y?
1. 2 answers
2. 368 views
A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times
1. 1 answer
2. 397 views
A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times
1. 0 answers
2. 534 views
A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times
1. 1 answer
2. 420 views
Two 20.0g ice cubes at -10.0 C are placed into 275g of water at 25.0 C. Assuming no energy is transferred to or from the
1. 1 answer
2. 1,327 views
Calculate the heat energy released when 19.6 of liquid mercury at 25.00 C is converted to solid mercury at its melting point
1. 1 answer
2. 914 views
Simplify: a+1/a-1 times a^2-1/(a+1)^2
1. 0 answers
2. 341 views
Simplify: (x^3-4x)(x^2-4x+4)^-1
1. 1 answer
2. 299 views
Hey, it's me again,Can someone help me with this question? A water balloon is dropped from the top of a building. Assume the
1. 1 answer
2. 2,847 views
"The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that
1. 1 answer
2. 4,857 views
A rectangular lot is to be fenced using 80m of fencing. What is the maximum area and what are the dimensions of the lot?
1. 1 answer
2. 1,945 views
I have this assignment due tonight in about 2 and a half hours. I am going to try to finish it the best that I can but I do not
1. 0 answers
2. 502 views
When 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. How do you determine what the
1. 1 answer
2. 2,558 views
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a glancing collision. The yellow disk is
1. 2 answers
2. 7,848 views
A 7.00 g bullet, when fired from a gun into a 1.00 kg block of wood held in a vice,penetrates the block to a depth of 8.00 cm.
1. 1 answer
2. 3,236 views
Calculate the normality of 5 M HCl
1. 1 answer
2. 396 views
How many grams of H2SO4 are contained in 4.5L of .30 N sulfuric acid?
1. 1 answer
2. 392 views
What mass of K2SO4 would you measure out to prepare 550mL of a .76 M solution?
1. 1 answer
2. 754 views
A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 0.65 m,
1. 3 answers
2. 630 views
he question is:A spherical capacitor contains a solid spherical conductor of radius 0.5mm with a charge of 7.4 micro coulombs,
1. 0 answers
2. 1,276 views
you see lightning and then count 4 seconds till you hear the thunder. From this you conclude that the lightning strike
1. 0 answers
2. 621 views
These are problems I have been stuck on and can't figure out. Help would be greatly appreciated.1. Blue and yellow light
1. 1 answer
2. 540 views
I'm not sure how to go about doing this. I feel like it's an easy question but im thinking to far into it. I want to say that
1. 1 answer
2. 491 views
An experiment begins with 8 cells, and the number of cells triples every week. If the expression a(b)^q computes the number of
1. 0 answers
2. 419 views
The bacteria in a 8-liter container double every 2 minutes. After 55 minutes the container is full. How long did it take to fill
1. 1 answer
2. 1,438 views
Due to increased CO2 in the atmosphere, the pH of rainwater is more acidic than in the previouscentury. Use the following data
1. 0 answers
2. 625 views
On a certain road 20% of the vehicles are trucks, 16% are buses and the remainder are cars.(i) A random sample of 11 vehicles is
1. 2 answers
2. 5,473 views
How fast should a 58.1g tennis ball travel to have a de Broglie wavelength that is equal to that of a photon of green light
1. 1 answer
2. 1,553 views
If an open box has a square base and a volume of 106 in.3 and is constructed from a tin sheet, find the dimensions of the box,
1. 1 answer
2. 2,005 views
Find the absolute maximum and absolute minimum values, if any, of the function. (If an answer does not exist, enter DNE.)f(x) =
1. 1 answer
2. 838 views
The equilibrium constant for the reaction,SO2(g)+ NO2(g) <----> NO(g)+ SO3(g) has been experimentally determined as a function
1. 0 answers
2. 652 views
the edges of 3 cubes are consecutive odd intergers. if the cubes aer stacked on a desk as shown, the total exposed surface area
1. 7 answers
2. 1,931 views
Calculate the enthalpy of reaction.D + F --> G + M using the following equations and data: G + C --> A + B ΔH = +277 kJ C + F
1. 0 answers
2. 639 views
Calculate the enthalpy of reaction.D + F --> G + M using the following equations and data: G + C --> A + B ΔH = +277 kJ C + F
1. 0 answers
2. 599 views
Hello! I am trying to finish a math assignment. it was a bunch of math questions, and I am having a very difficult time with 5
1. 0 answers
2. 609 views
Hello! I am trying to finish a math assignment. it was a bunch of math questions, and I am having a very difficult time with 5
1. 0 answers
2. 955 views
I have a maths assignment and i need help with this question my teacher is overseas at the moment and it is due when he gets
1. 1 answer
2. 635 views
Find the volume of a sphere whose surface area is 804 u2
1. 1 answer
2. 392 views
How far does the bike go on one rotation of the pedal sprocket in gear 2c?Gear 2c = 1.95
1. 1 answer
2. 463 views
If = 58° and m = 120 in, what is the value of n to the nearest tenth of an inch?
1. 5 answers
2. 1,557 views
Why do scientists think that colonial organisms were important in the evolution of multicelluar organisms?thanks!
1. 0 answers
2. 508 views
what is another method for classifying bacteria? (other than shape or cell wall structure).thanks! :)
1. 0 answers
2. 885 views
Sulfur dioxide gas reacts with hydrogen sulfide gas to produce elemental sulfur (S8) and water vapor. Predict the temperature
1. 1 answer
2. 941 views
We did this lab in which we used 3 brands of hand sanitizers and did the kirby bauer test. We measured the zone of inhibition
1. 0 answers
2. 383 views
The math lesson I am currently working on is "Income Tax Return 1040EZ" I need a certain table to figure out the problems, that
1. 4 answers
2. 705 views
1) A school has 1-- closed lockers. Larry comes into the school and "toggles" every second locker, then Fred toggles every 3rd,
1. 6 answers
2. 630 views
Calculate the pH of a 0.250M solution of Sulfurous acid, H2SO3.
1. 2 answers
2. 2,375 views
when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius.A)
1. 1 answer
2. 499 views
Find the linear block code generator matrix G, if the code generator polynomial is g(x) = 1 + x^3 for a (7,4) code.
1. 0 answers
2. 495 views
If the code generator polynomial is g(x) = 1 + x^2 for a (5,3) code, find the linear block code generator matrix G.
1. 0 answers
2. 545 views
Mr. Pennypacker left half of his estate to his wife; $40,000 to his daughter; half of what remained to his butler; half of what
1. 1 answer
2. 522 views
What is the difference between the function of autonomic transmitters and receptors? In what way or how do they regulate
1. 0 answers
2. 458 views
Explain how a long stock and long put strategy equals the cash flow from a long call strategy.
1. 1 answer
2. 1,429 views
Consider an antenna transmitting at 900 MHz. The receiver is traveling at a speed of 40km/h. Calculate its Doppler shift.
1. 0 answers
2. 627 views
what is the square feet of a box with two sides of 2 2/3 x 2 2/3 each?
1. 1 answer
2. 294 views
How much heat is associated with converting 100 g of steam at 112 degrees C to ice at -5.3 degrees C
1. 0 answers
2. 580 views
Now I am confused.What about these sentences? I am happy to say that everyone in my family felt good/well after eating my meal.
1. 2 answers
2. 1,194 views
I felt good/well when my family said that they enjoyed it.I think that I should pick well because it is an adverb that describes
1. 1 answer
2. 596 views
Which word should I use and why?I did my best to make a real/really good dinner.
1. 1 answer
2. 327 views
A 390 kg motor boat, moving down a frictionless ramp, is connected over a massless pulley to a 193 kg counterweight that rests
1. 2 answers
2. 1,052 views
sealed metal container can withstand a pressure difference of 0.630 . The container initially is filled with an ideal gas at 12
1. 1 answer
2. 1,143 views
Great Gatsby Chapter 1.Why is Nick telling the story? Why is nick "confused and disgusted" at the end of this chapter?
1. 2 answers
2. 1,166 views
U+F6-->UF6If 8.4 g UF6 are recovered from 55 kg of ore, what is the weight % of uranium in the ore? Answer in units of %
1. 1 answer
2. 636 views
The equations y=-2X+12, y=6-X, and X=0 enclose a region in quadrant I. when that region is reflected over the line y=6-X, a
1. 0 answers
2. 553 views
In a study to determine if you can predict stock price based on P-E ratio, what is the response variable and what is the
1. 0 answers
2. 380 views
a 4.0 m hockey puck is moving horizontally at 5.0 m/s. the amount of work that must be done on the puck to stop it is?
1. 1 answer
2. 368 views
A 16kg child on roller skates rolls 2m down an incline at 20 degrees with the horizontal. With no friction, what is the total
1. 1 answer
2. 1,840 views
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and
1. 1 answer
2. 667 views
Can you please find any documents (pictures, quotes, info) for the following question:Compare and contrast the economy and
1. 2 answers
2. 476 views
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and
1. 2 answers
2. 614 views
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and
1. 0 answers
2. 621 views
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and
1. 0 answers
2. 1,015 views
Evaluate all six trigonometric functions at t, where the given point lies on the terminal side of an angle of t radians in
1. 3 answers
2. 920 views
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat
1. 1 answer
2. 1,542 views
A object-spring system oscillates with an amplitude of 4.0 cm. If the spring constant is 210 N/m and object has a mass of 0.50
1. 3 answers
2. 754 views
The blades of a ceiling fan have a radius of 0.399 m and are rotating about a fixed axis with an angular velocity of +1.65
1. 1 answer
2. 1,297 views
What is the longest wavelength for standing sound waves in a 102.0 cm long tube that is open at both ends?
1. 1 answer
2. 573 views

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