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Ana

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Nitrogen gas has values of Cv and Cp of 20.8 and 29.1 J K-1 mol-1, respectively. When a certain amount of nitrogen is heated at
1. 1 answer
2. 733 views
Hydrazine is used as a rocket fuel because its reaction with oxygen is extremely exothermic:N2H4(liquid) + O2(g)  N2(g) +
1. 2 answers
2. 2,067 views
Calculate delta E for a process in which 88.0 g of nitrous oxide gas (N2O) is cooled from 165 ˚C to 65 ˚C at a constant
1. 7 answers
2. 5,935 views
An electrochemical battery made from Sn and Cu electrodes under standard conditions shows aninitial voltage of V= 1.1 V. If the
1. 5 answers
2. 615 views
Use the following information to answer this question:Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° =
1. 2 answers
2. 660 views
In the following hypothetical reaction A + B → C + D, the equilibrium constant, Keq is less than 1.0 at25°C and decreases by
1. 3 answers
2. 2,371 views
The following reaction has a positive value of ΔG°.2H2O(g) → 2H2(g) + O2(g) Which of the following statements must be true?
1. 3 answers
2. 4,353 views
Consider a buffer made from 0.13 M sodium acetate and 0.10 M acetic acid in 1L. What amount of KOH must be added to cause an
1. 6 answers
2. 765 views
Ammonia is a weak base with a Kb of 1.8 x 10-5. A 100.0 mL sample of 0.13 M aqueous solution of ammonia (NH3) is mixed with 87
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2. 885 views
How many mmol ( millimoles) of HCl must be added to 130.0 mL of a 0.40M solution of methyl amine (pKb = 3.36) to give a buffer
1. 5 answers
2. 1,561 views
Posted by Ana on Saturday, May 3, 2014 at 11:23am.A zinc-copper battery is constructed as follows (standard reduction potentials
1. 1 answer
2. 601 views
If a navigation error puts a plane 2 degrees off course, how far off course is the plane after flying 121 miles? Round to the
1. 2 answers
2. 901 views
A boat travels 74 miles on a course with direction 34 degrees and then changes its course to travel 58 miles at 53 degrees. How
1. 2 answers
2. 1,074 views
An airplane, after 1 hour in the air, arrives at a point 350 miles south of its departure point. There was a steady wind of
1. 1 answer
2. 819 views
Ammonium metavanadate reacts with sulfur dioxide in acidic solution as follows (hydrogen ions and H2O omitted):xVO3^–^ + ySO2
1. 2 answers
2. 5,839 views
Use the following information to answer this question:Cu+(aq) + e- → Cu(s) E° = 0.521V Cu2+ (aq) + e- → Cu+ (aq) E° =
1. 4 answers
2. 2,846 views
A zinc-copper battery is constructed as follows (standard reduction potentials given below):Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M)
1. 5 answers
2. 2,131 views
A zinc-copper battery is constructed as follows (standard reduction potentials given below):Zn | Zn2+ (0.10 M) || Cu2+ (2.50 M)
1. 0 answers
2. 822 views
A fuel cell designed to react grain alcohol with oxygen has the following net reaction:C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)
1. 0 answers
2. 1,066 views
A student attempted to synthesize malonic acid which has a molecular weight of 104g/mol by the same method used to synthesize
1. 4 answers
2. 1,065 views
The decomposition of HCO2H follows first-order kinetics.HCO2H(g) CO2(g) + H2(g) The half-life for the reaction at a certain
1. 2 answers
2. 2,074 views
The rate constant for a second order reaction has the value of 2.5 x 10–3 L·mol–1·s–1. If the initial concentration of
1. 4 answers
2. 641 views
Consider the kinetic data given in the table below for the first order reaction:What is the value of the activation energy?
1. 2 answers
2. 697 views
Consider the kinetic data given in the table below for the first order reaction:What is the value of the activation energy?
1. 1 answer
2. 491 views
Use synthetic division to determine which pair of integers provide both a lower and an upper bound for the zeros of f(x)=
1. 0 answers
2. 538 views
If Lori's neighbor gave her sixths eighths cup of milk, would she then have enough milk to make her 2 pancakes?
1. 1 answer
2. 576 views
if you throw a 0.2 kg ball straight up at 8 m/s how high will it go
1. 1 answer
2. 539 views
if an airplane is traveling at 550 km/h into a head wind with a velocity of 40km/h what is the airplanes velocity relative to
1. 1 answer
2. 554 views
If a motorboat travels 25km/h towards the sea, down a river whose velocity is 4km/h what is the boats velocity related to the
1. 1 answer
2. 1,245 views
How many copper atoms are in a pure copper statue with a mass of 139kg{\rm kg}
1. 2 answers
2. 1,417 views
Iron ores have different amounts of iron per kilogram of ore.Calculate the mass percent composition of iron for each iron ore:
1. 2 answers
2. 1,973 views
Citric acid, the compound responsible for the sour taste of lemons, has the following elemental composition: C{\rm C}, 37.51%\%;
1. 3 answers
2. 8,811 views
Suppose a manufacturer claims that each family-size bag of pretzels sold weighs 12 ounces on average with a standard deviation
1. 1 answer
2. 1,142 views
(a) What is the pH of a 6.1 ✕ 10-5 M Ca(OH)2 solution?(b) What is the H3O+ concentration of the solution? I already know the
1. 1 answer
2. 528 views
a. What is the pH of a 6.1 ✕ 10-5 M Ca(OH)2 solution?b. What is the H3O+ concentration of the solution? I just cant figure out
1. 3 answers
2. 465 views
A ball is dropped from 400 ft what is the height of the ball on the 6th bounce?1 bounce =280 ft 2 bounce= 196 ft 3 bounce =
1. 1 answer
2. 1,206 views
Please HELPType the word that the underlined phrase modifies or renames. Store the records OF PAYMENTS in the file cabinet.
1. 2 answers
2. 675 views
(1) 8/1 divided (-3 2/5) My answer is 68/1(2) 3 2/3 divided by -8 6/7 answer 682/21 3) 41/5 x -8/5 =32/25 Please I need help i'm
1. 1 answer
2. 454 views
The major reason for the predominance of the PCI bus in the latest models of PCs is thatA. the size and form factor make it easy
1. 0 answers
2. 516 views
If x over three minus y over two= negative three. Which statement best explains the value of y changes each time x is increased
1. 1 answer
2. 393 views
How is Earth like a system?
1. 1 answer
2. 331 views
A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base
1. 0 answers
2. 1,227 views
A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base
1. 2 answers
2. 1,899 views
18.5g Al is submerged in 20.2g of water with a total temperature of 27°C. How much energy in joules is absorbed by the Al if
1. 1 answer
2. 501 views
X Y0 23 2 27 2.3 29 4.1 32 5 35 What is the correlation for this data set? 10) Find the regression line for this data set.
1. 1 answer
2. 435 views
Evaluate the determinant of the matrix.[-4 5 6 0 4 4 -2 -5 4]
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2. 624 views
Find the values of the variables.[-12 -w^2] = [2k -81] [2f 3] [-4 3] Show your work?
1. 1 answer
2. 1,888 views
Find the sum[1 4] [0 0] [0 3] + [0 0] A - [1 4] [0 3] B - undefined C - [0 0] [0 0] D - [1 0] [4 3]
1. 1 answer
2. 1,395 views
How do you find the hours of daylight ?
1. 1 answer
2. 380 views
The Formula s= sqrt 30fd can be estimated the speed of s, in miles per hour that a car is traveling when it goes into a skid,
1. 5 answers
2. 4,741 views
In the xy-coordinate plane, the distznce between point B(15,7) and point A(x,15) is 17. What is one possible value of x?
1. 0 answers
2. 900 views
I'm trying to find information on does lung capacity depend on height
1. 1 answer
2. 1,041 views
I,m writing a paragraph about using resources responsibly.And I have to use three vocabulary words adverse,generate,apparatus.
1. 5 answers
2. 532 views
write a paragraph about using resources responsibly using these three words:renewable,nonrenewable,generate.
1. 1 answer
2. 458 views
What are the duties of congressional committees?
1. 2 answers
2. 470 views
Identify checks and balances.
1. 3 answers
2. 397 views
Explain progressive and regressive taxes.
1. 5 answers
2. 438 views
Explain the social contract theory.
1. 1 answer
2. 640 views
Who works on the federal budget?
1. 1 answer
2. 349 views
List one of the unalienable rights.
1. 1 answer
2. 428 views
Describe the different types of primaries.
1. 1 answer
2. 472 views
How do the duties of the Lieutenant Governor compare to those of the vice president?
1. 1 answer
2. 1,387 views
Madison spent 5/8 of her savings on a microwave oven and a refridgerator. She used 4/7 of the amount she spent to buy the
1. 3 answers
2. 641 views
Jaden wants to cover the floor with square tiles the same size. The floo measures 315 inches by 108 inches. If she uses only
1. 10 answers
2. 2,448 views
At a festival, 2/7 of the number of girls was equal to 3/5 of the number of the boys. There were 165 fewer boys than girls, how
1. 5 answers
2. 1,144 views
Two 0.4 kg soccer balls collide elastically in a head-on collision. The first ball starts at rest, and the second ball has a
1. 1 answer
2. 5,035 views
3x2+x+2
1. 0 answers
2. 362 views
What is the volume in liters of 48.0 grams of oxygen gas at 0.0 C and a pressure of 760mm Hg?
1. 1 answer
2. 457 views
Simplify Complex fraction:(x-1) ----- (x-3) --------- 1 4 ---- - ---- x2-x-6 (x+2)
1. 1 answer
2. 1,069 views
(x-1)/(x-3)/1/x2-x-6-4/(x+2)
1. 0 answers
2. 253 views
Reduce the Rational expression to lowest terms:3x2-9x+6/10-5x
1. 1 answer
2. 502 views
A jar contains 2 red marbles,6 blue marbles,4 white marbles, and 12 black marbles. What is the ratio of white marbles to all
1. 3 answers
2. 1,453 views
Find the center and radius of the given circle.1. x^2 + y^2 + 10y + 21 = 0
1. 0 answers
2. 428 views
Energy Use Light Output35 2250 50 4000 70 5800 100 9500 150 16000 What is the quadratic model for the light output with respect
1. 0 answers
2. 381 views
Examine the table below as the spearation distance is doubled ow much does the electrostatic forces decrease?1 20.0 Cm 0.1280N 2
1. 0 answers
2. 343 views
I am doing a journal review paper for Psychology. What are the implications of this work (i.e. what light does it shed on the
1. 1 answer
2. 538 views
I am doing a journal review paper. What are the implications of this work (i.e. what light does it shed on the particular topic
1. 2 answers
2. 482 views
Cassandra has a square photo that has lengths of 4 inches. She cuts 5/8 inch off the top and 1/2 inch off the bottom. What is
1. 3 answers
2. 469 views
What are some examples of self-monitoring techniques?What are some examples of self-managing techniques? NOTE: I just need some
1. 1 answer
2. 541 views
What am I suppose write about when I am asked to describe my self-concept?Note: Do NOT just give a link to the definition. I
1. 3 answers
2. 453 views
B. Assume the child is 1.2 meters tall and casts a shadow of 6.4 meters. Determine the angle of the sun at that moment.
1. 1 answer
2. 516 views
how to simplify the following,please step by step56x^7+21x^4+63x^3
1. 1 answer
2. 437 views
4x+(-9+3x)=-5
1. 1 answer
2. 291 views
Juan had three pieces of stick. The longest one measured 64 cm and is twice as long as the other two pieces. Find the total
1. 1 answer
2. 413 views
What is the answer here? Find the sum of the biggest odd numbers formed by the digits 1 and 2 and the smallest even number
1. 1 answer
2. 548 views
30% of 59
1. 1 answer
2. 252 views
If you must stop your moving car in a hurry, should you slam on the brakes and lock them?
1. 0 answers
2. 390 views
Solve the equation (3^x)^2-12*3^x+27=0Simplify and write without negative exponents: 3^2(x^-2y^3)^3/4^1/2*x^-4cuberooty^2
1. 1 answer
2. 381 views
Write as a single logarithm of a single quantityln(3)+1/2ln(x+2)-4ln(1+sqrtx)
1. 3 answers
2. 636 views
aluminum has a density of 27g/cm3 if a chunk of aluminum with a mass of 16g is placed in a graduated cylinder partially filled
1. 1 answer
2. 792 views
If two number cubes are tossed, what is the probability of getting a sum that is less than 6, given that 1 number cube shows a 3
1. 2 answers
2. 1,967 views
In Circuits lab, we had to construct different types of operational amplifiers. The inverting and summing amplifiers produced
1. 1 answer
2. 413 views
In Circuits lab, we had to construct different types of operational amplifiers. The inverting and summing amplifiers produced
1. 0 answers
2. 395 views
An aqueous solution contains 0.196 M hydrosulfuric acid and 0.190 M hydrochloric acid.Calculate the sulfide ion concentration in
1. 1 answer
2. 554 views
An aqueous solution contains 0.216 M ascorbic acid (H2C6H6O6) and 0.131 M hydrochloric acid.Calculate the ascorbate (C6H6O62-)
1. 1 answer
2. 1,227 views
A 933 kg block is pushed on the slope of a 20◦ frictionless inclined plane to give it an initial speed of 50 cm/s along the
1. 0 answers
2. 581 views
Your percent
1. 0 answers
2. 277 views
adam smith supported three different views of theory of value(are the followings correct, i will add them to my essay) 1. Labor
1. 1 answer
2. 1,130 views
How many iron atoms are in 0.32 mol of Fe2O3
1. 2 answers
2. 2,435 views
If cosecant of theta equals 3 and cosine of theta is less than zero, find sine of theta, cosine of theta, tangent of theta,
1. 1 answer
2. 1,195 views

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