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Questions Asked on April 21, 2014

If delta H°rxn and delta S°rxn are both positive values, what drives the spontaneous reaction and in what direction at
1. 7 answers
2. asked by Alexis
3. 11,298 views
Calculate ΔG° for the following reaction at 298 K.?A+B --> 2D ΔH° = 775.0 kJ ΔS°=296.0 J/K C --> D ΔH° = 446.0 kJ
1. 2 answers
2. asked by Alexis
3. 10,807 views
Where possible, classify these systems as reactant-favored or product-favored at 298 K. If the direction cannot be determined
1. 2 answers
2. asked by Sophie
3. 10,555 views
Carol has a collection of 100 stamps the graph below shows the percentage of stamps she has from each country how many more of
1. 30 answers
2. asked by person
3. 9,982 views
A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is 5.a. What is the
1. 3 answers
2. asked by Vanessa
3. 9,666 views
1. There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P
1. 17 answers
2. asked by Chloé
3. 9,452 views
How large a sample should be selected to provide a 95% confidence interval with a margin of error of 10 (to the nearest whole
1. 2 answers
2. asked by Vanessa
3. 7,327 views
A basket contains the following pieces of fruit: 3 apples 2 oranges, 2 bannans, 2 pears, and 5 peaches. Jonas picks a fruit at
1. 5 answers
2. asked by Alexander
3. 4,362 views
The quarterback of a football team releases a pass at a height of 7 feet above the playing field, and the football is caught at
1. 2 answers
2. asked by Brittany
3. 3,966 views
Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C) and that the calorimeter itself absorbs a negligible amount
1. 1 answer
2. asked by Tyler
3. 3,867 views
1. What was the Supreme Court's ruling on the Dred Scott case? (1 point)Dred Scott should be considered free since he had lived
1. 14 answers
2. asked by TTR+S<3
3. 3,627 views
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway
1. 2 answers
2. asked by Vanessa
3. 3,612 views
What is the general solution to y = arcsin 1?
1. 2 answers
2. asked by Annabelle
3. 3,580 views
How many cell divisions would it take to produce at least 1,000 cells from one cell? (When one cell splits in half during cell
1. 10 answers
2. asked by Anonymous
3. 3,502 views
How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi
1. 1 answer
2. asked by Annabelle
3. 3,252 views
What is the general solution to y = arcsin 0?
1. 2 answers
2. asked by Annabelle
3. 3,193 views
1. In a standing wave, the medium at the tip of a loop isa) showing destructive interference b) not moving c) at the original
1. 4 answers
2. asked by Liz
3. 3,011 views
what is the value of igneous rocks to humankind?
1. 4 answers
2. asked by justin
3. 2,948 views
I am not too sure if my answers are correct. Here are the questions:1. A student standing near a brick wall claps her hands and
1. 3 answers
2. asked by Liz
3. 2,905 views
all 500 students at robinson junior high were surveryed to find their favorite sport how many more students played football than
1. 4 answers
2. asked by person
3. 2,648 views
Narwhals are aquatic mammals known for the giant tusk that protrudes from their upper lip. These mammals live in artic waters
1. 3 answers
2. asked by Sdog
3. 2,428 views
For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.a. To the right of 2.120. (Use 3
1. 1 answer
2. asked by Vanessa
3. 2,419 views
A playful college student tosses a water balloon out of his dorm window at a speed of 6.2 m/s at an angle of 10° above the
1. 2 answers
2. asked by Corey Brown
3. 2,279 views
Hydrogen peroxide(H2O2) slowly decomposes to form water and oxygen gas. Calculate the mass of Hydrogen peroxide needed to obtain
1. 1 answer
2. asked by Madison
3. 2,257 views
A particle is moving along the curve y= 4 sqrt{2 x + 2}. As the particle passes through the point (1, 8), its x-coordinate
1. 3 answers
2. asked by Lucy
3. 2,075 views
A pilot is flying from City A to City B which is 300 km [NW]. If the plane will encounter a constant wind of 80 km/h from the
1. 1 answer
2. asked by Corey Brown
3. 1,981 views
1. A person is listening to a new instrument capable of sounds ranging from 10 dB to 150 dB and with frequencies from 12 Hz to
1. 1 answer
2. asked by Liz
3. 1,893 views
On an exam on probability concepts, Sue had an answer of 13/8 for one problem. Explain how she knew that this result was
1. 1 answer
2. asked by Traci
3. 1,813 views
displacement (s) of a spring is given as s=ae^(-kt)sin2pi*f*t where t is time.determine velocity and acceleration affter
1. 1 answer
2. asked by frederiser
3. 1,667 views
Write a program to find the sum of the series: 1/12+1/22+1/32+…..1/n2.
1. 1 answer
2. asked by jamshaid
3. 1,619 views
the first three terms of a GP are the first, fourth and tenth terms of an AP. given that the first term is 6 and that all the
1. 2 answers
2. asked by Robert
3. 1,584 views
The random variables X1,..,Xn are independent Poisson random variables with a common parameter Lambda . Find the maximum
1. 1 answer
2. asked by qwerty
3. 1,476 views
Calculate ΔH∘f (in kilojoules per mole) for benzene, C6H6, from the following data:2C6H6(l)+15O2(g)→12CO2(g)+6H2O(l) ΔH∘
1. 1 answer
2. asked by Tyler
3. 1,462 views
NH4NO3(s)+H2O(l)→NH4NO3(aq) ΔH = +25.7 kJ.What is the final temperature in a squeezed cold pack that contains 45.5g of NH4NO3
1. 1 answer
2. asked by Tyler
3. 1,430 views
Which of the following types of information is NOT suited for display on a scatter plot?1. relationship between age and number
1. 5 answers
2. asked by person
3. 1,402 views
Ramona divided his 35,000 inheritance between two investments, one paying 9% and the other 12% simple interest. is total annual
1. 1 answer
2. asked by Alicia
3. 1,394 views
a steel aircraft carrier is 370 meter long when moving through the icy north atlantic at a temperature of 2.0 degrees celsius.
1. 2 answers
2. asked by sayla
3. 1,388 views
Let Sn be the number of successes in n independent Bernoulli trials, where the probability of success for each trial is 1/2 .
1. 3 answers
2. asked by qwerty
3. 1,367 views
Shakespeare also deviates from Aristotle's idea about the hero's recognition of the whole tragic situation. In Romeo and Juliet,
1. 2 answers
2. asked by Victoria
3. 1,324 views
1.B2.D 3.B 4.C 5.D 11.What contribution did Simón Bolivar and José de San Martín make to the history of the region? A. They
1. 6 answers
2. asked by matt
3. 1,322 views
A radioactive isotope source has a mass of 120ug. If the isotope had a half life of 20s, what would be the mass if the isotope
1. 1 answer
2. asked by Jannet
3. 1,238 views
Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of
1. 3 answers
2. asked by qwerty
3. 1,218 views
Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each
1. 4 answers
2. asked by Hannah
3. 1,188 views
if a positive factor for harvesting trees is encouraging local industry, a negative could beA. loss of habitat B. mining
1. 2 answers
2. asked by Ms.sue HELP PLEASE!!!
3. 1,188 views
Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined
1. 1 answer
2. asked by Sara
3. 1,159 views
A 0.250-kg aluminum bowl holding 0.800 kg of soup at 27.0°C is placed in a freezer. What is the final temperature if 430 kJ of
1. 1 answer
2. asked by logan
3. 1,157 views
A person wants to establish an annuity for retirement purposes. He wants to make quarterly deposits for 20 years so that he can
1. 0 answers
2. asked by Anonymous
3. 1,150 views
For any given flight, an airline tries to sell as many tickets as possible. Suppose that on average, 10% of ticket holders fail
1. 0 answers
2. asked by qwerty
3. 1,141 views
All of the following are accurate tips for effective listening EXCEPT: (Points : 1)Listen to what the speaker doesn’t say as
1. 3 answers
2. asked by Anonymous
3. 1,092 views
1. In a standing wave, the medium at the tip of a loop isa) showing destructive interference b) not moving c) at the original
1. 0 answers
2. asked by Liz
3. 1,092 views
A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.8 kg, and its
1. 1 answer
2. asked by logan
3. 1,089 views
Niles Eldredge found evidence in trilobite fossils of a pattern of evolution in which short periods of large change are mixed in
1. 2 answers
2. asked by Sdog
3. 1,085 views
1.B2.D 3.B 4.C 5.D 11.What contribution did Simón Bolivar and José de San Martín make to the history of the region? A. They
1. 4 answers
2. asked by matt
3. 1,080 views
If a balloon filled with carbon dioxide has occupies a volume of 31 L at STP, what is the mass of the gas?
1. 1 answer
2. asked by Madison
3. 1,062 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. asked by Ana
3. 1,035 views
Memo EditToday, Rite Properties needs to send a memo to the residents of The Plaza, an apartment complex they own. Review the
1. 2 answers
2. asked by Anonymous
3. 1,012 views
1. The admission of Missouri as a slave state was controversial in the Senate becausethe Senate was pro-slavery. it would create
1. 5 answers
2. asked by TTR+S<3
3. 1,006 views
Which of the following might help us develop open-mindedness and the virtue of tolerance?A. Recognizing that people have free
1. 1 answer
2. asked by Erica
3. 1,000 views
Given points J (1,4), A (3,5), and R(2,1), graph JAR and its reflection image across each line`1) the x-axis 2) the y-axis 3) y
1. 0 answers
2. asked by Clea
3. 989 views
ConcisionRewrite the sentences using concision techniques (replacing phrases with words, combining sentences, etc.) discussed in
1. 1 answer
2. asked by Kimberly :(
3. 985 views
The quarterback of a football team releases a pass at a heights of 7 feet above the playing field, and the football is caught at
1. 0 answers
2. asked by Brittany
3. 977 views
Let X be a continuous random variable. We know that it takes values between 0 and 3 , but we do not know its distribution or its
1. 3 answers
2. asked by qwerty
3. 974 views
Which of the following statements is correct? (check all that apply)If liquid water is not stable on the surface of Mars, liquid
1. 0 answers
2. asked by qwerty
3. 955 views
A bone fragment has lost 75% of its original carbon-14. What is the age of the bone fragment?My answer is about 11 000 years but
1. 1 answer
2. asked by Aditya
3. 933 views
The minute hand of a clock is 6 inches long and moves from 3 o clock to 5 o clock. how far does the tip of the minute hand move.
1. 1 answer
2. asked by Deborah
3. 927 views
I want to know if someone could let me know if I have written my balanced equations correct for the following questions.Write a
1. 1 answer
2. asked by jazz
3. 878 views
A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?
1. 1 answer
2. asked by Anonymous
3. 850 views
3/4 of a gallon is 6/7 of the amount originally in the container. how much was in container originally
1. 1 answer
2. asked by sierra
3. 847 views
The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a
1. 1 answer
2. asked by Vanessa
3. 843 views
Suppose thatf'(x)= (2x^2-5x-12)/(3x^2-7x+2) and that f(x) is continuous for all real numbers x. a) Do a sign diagram to list the
1. 2 answers
2. asked by Anonymous
3. 836 views
When we claim that certain moral values or principles (e.g., do not steal) apply or should apply to all people, everywhere, we
1. 2 answers
2. asked by Pat
3. 817 views
A body of mass m is suspended by two strings (right strings equals an angle a with horizontal and left an angle B with vertical.
1. 1 answer
2. asked by rupesh
3. 817 views
The northern plains of Mars have many characteristics that you would expect from their being an ancient ocean floor.Probably
1. 1 answer
2. asked by qwerty
3. 813 views
the typical saturday the oil change facility will perform 40 oil changes between 10 am and 12pm. treating this as a random
1. 0 answers
2. asked by Sandra
3. 812 views
Find an exponential growth modeln(t) = Cat for the population t years since the bullfrogs were put into the pond with
1. 1 answer
2. asked by Cameron
3. 811 views
If a person standing 5 feet tall casts a shadow 12 feet long, then how long is a tree's shadow if a tree stands 17.5 feet tall?
1. 4 answers
2. asked by anonymus
3. 810 views
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between
1. 0 answers
2. asked by Vanessa
3. 797 views
I would like to know if my answer is correct. Thanks in advanced!A person with their head sideways in the water sees a beaver
1. 0 answers
2. asked by Liz
3. 788 views
Limit as x approaches (pi/2)^- of (x-pi/2)*secx
1. 1 answer
2. asked by T.J
3. 786 views
Identify the sequence as arithmetic. geometric, or neither.. explain your answer1.6, 0.8, 0.4, 0.2
1. 1 answer
2. asked by Blake Seaborn
3. 782 views
A bullet of mass 100g is fired at avelocity 100m/s into a wooden block of mass 900g.If the bullet gets embeded into the
1. 1 answer
2. asked by meenu
3. 779 views
ABOUT,THE GHANA NATIONAL WEEKLY LOTTO,THE LAST TWO WEEKS RESULTS ARE
1. 0 answers
2. asked by FITINI
3. 768 views
how many ways can 10 runners finish a race. 10 could finish 10 9 could finish 9 and so on would I times 10*9*8 ect that number
1. 1 answer
2. asked by jill
3. 763 views
Find the equation of the circle for which a diameter has endpoints P1(-1, 4) and P2(-5, 2).
1. 1 answer
2. asked by KMILLhelp
3. 759 views
find the mean and RMS of v=25sin50πtover the range t=0 to t=20ms using integration. i have integrated to: v=-cos(50πt)/2π+c
1. 1 answer
2. asked by jerome
3. 756 views
What is the change in internal energy of a system that takes in 2.40 ✕ 106 J of heat, and does 4.50 ✕ 105 J of work while
1. 1 answer
2. asked by bails
3. 751 views
6) This was issued in 1635, forbidding anyone to leave or enter Japan.a. Tang Shogunate b. Edit of Milan c. Edit of Nantes d.
1. 3 answers
2. asked by Gen
3. 751 views
Question 12.12. Katie had an unpaid balance of $1,734.50 on her credit card statement at the beginning of January. She made a
1. 1 answer
2. asked by Anonymous
3. 746 views
Which of the following might help us develop open-mindedness and the virtue of tolerance?A. Recognizing that people have free
1. 1 answer
2. asked by Erica
3. 744 views
The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (The Wall Street Journal,
1. 1 answer
2. asked by Vanessa
3. 744 views
14, 8, -16, 32...Arithmatic. 64, 128, 256 geometric, -64, 128, -256 geometric, -48, 64, -80*** the sequence is neither geometric
1. 1 answer
2. asked by Aniston
3. 740 views
using a coffee calorimeter, it is found that when an ice cube weighing 24.6g melts, it absorbs 8.19kJ of heat. calculate delta H
1. 1 answer
2. asked by Kera
3. 733 views
A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s2,a) how
1. 0 answers
2. asked by Alex
3. 713 views
Mark and Juanita want to tile their kitchen floor. If the kitchen floor is shaped like a rectangle and measures 11 feet × 14
1. 1 answer
2. asked by anonymus
3. 709 views
A small plane can travel at 200 km/h in still air. If a 50.0 km/h wind is coming from the east, determine the ground velocity of
1. 1 answer
2. asked by Corey Brown
3. 707 views
How much energy is needed to melt 25.4 grams od I2?
1. 2 answers
2. asked by jordan
3. 705 views
Sometimes a crater from the Noachian period can be found inside of a crater from the Amazonian period.Probably true Maybe
1. 1 answer
2. asked by qwerty
3. 705 views
Two speakers are both emitting sounds, the first with an intensity level of 1 x 10^{-11} \frac{W}{m^2} and the second with an
1. 1 answer
2. asked by Anonymous
3. 699 views
Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation.y = 8x^2 +
1. 1 answer
2. asked by KELLY
3. 692 views
Lactic acid (CHgCHOHCOgH) is found in sour milk, in sauerkraut, and in muscles after activity. (K, for lactic acid I 1.4 X
1. 0 answers
2. asked by angela
3. 679 views

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