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2014
April

Questions Asked on April 20, 2014

Predict how the entropy of the substance is affected in the following processes:a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k)
1. 4 answers
2. asked by Alexis
3. 9,030 views
Given the equilibrium reaction N2(g) + 3 H2(g) <---> 2NH3(g) + heat, an increase in temperature will:a) Increase the value of K
1. 3 answers
2. asked by Chloe
3. 6,524 views
As a standard voltaic cell runs, it "discharges" and the cell potential decreases with time. Explain.
1. 2 answers
2. asked by Tim
3. 4,671 views
The owner of a music store received a shipment of 1,532 cds the CDs came in 37 boxes the same number of cds were in 36 of the
1. 6 answers
2. asked by Pinks
3. 3,718 views
Write each logarithmic expression as a single logarithm:Log 2 + 3 log 1
1. 2 answers
2. asked by Dominique
3. 3,553 views
A man pulls a rope attached to a crate with a force of 120 N. If the rope makes an angle of 130 degrees with the ground, find
1. 1 answer
2. asked by Gie
3. 3,524 views
1. If a bat emits 10 sounds in 5 seconds, what is the frequency of the bat's vocal outbursts (rounded to first decimal place)My
1. 3 answers
2. asked by Liz
3. 3,373 views
What are the products of the reaction between nitrous acid and strontium hydroxide?
1. 1 answer
2. asked by Candy
3. 3,246 views
using standard potentials given in the appendices calculate the standard cell potentials and the equilibrium constants for the
1. 6 answers
2. asked by Kader
3. 3,231 views
Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be
1. 13 answers
2. asked by A
3. 3,194 views
When heat transfers into a system, is the energy stored as heat? Explain briefly.
1. 2 answers
2. asked by Mohanad
3. 2,925 views
Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
1. 5 answers
2. asked by A
3. 2,262 views
If 2.33 L of propane (C3H8) at 24oC and 67.2 kPa is completely burned in excess oxygen, how many moles of carbon dioxide will be
1. 2 answers
2. asked by Suzanne
3. 2,239 views
Perform the given set operation. Let U = {1,2,3,4,5,6,7,8,9,10}. Enter the answer as a comma-separated list. Enter EMPTY for the
1. 4 answers
2. asked by Mary
3. 1,987 views
1. Solve:6C3 120***? 720 20 240 is this right?
1. 3 answers
2. asked by TTR+S<3
3. 1,785 views
Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and
1. 8 answers
2. asked by A
3. 1,782 views
Write euations to show how a buffer made up of equimolar amounts of acetic acid, CH3COOH, and acetate, CH3COO-, would behave
1. 1 answer
2. asked by Lan
3. 1,719 views
A sum of money,X was deposited in a saving account at 10 percent compounded daily on 25 july 1993. on 13 august 1993, rm600 was
1. 2 answers
2. asked by fizz
3. 1,667 views
The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4ounces. Suppose that 800 jawbreakers are
1. 2 answers
2. asked by Anonymous
3. 1,607 views
Write an equation in slope intercept form of the line that is perpendicular to the given line and that passes through the given
1. 3 answers
2. asked by Ava
3. 1,603 views
Fill in the blanks with the appropriate raw scores, z-scores, T-scores, and percentile ranks. NOTE: the Mean = 50, SD = 5.______
1. 3 answers
2. asked by Judi
3. 1,539 views
Cohesion and Coherency/Sentence VarietyThis short paragraph has two distinct problems. First, to improve cohesion, rewrite these
1. 1 answer
2. asked by Kader
3. 1,449 views
RM65000 will be invested for 6 years 9 months. if the investment will be offered 5% compounded semi annualy for the first 2
1. 2 answers
2. asked by fizz
3. 1,407 views
A student intend to prepare 200ml of 0.3M NaCl solution . The mass in gram of NaCl needed to prepare solution is ?!
1. 1 answer
2. asked by Mariam
3. 1,396 views
Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the formfX(x)=⎧⎩⎨cx3 if x≥1,
1. 4 answers
2. asked by A
3. 1,338 views
A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the
1. 2 answers
2. asked by Amanda
3. 1,313 views
Recently, a university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates
1. 2 answers
2. asked by Ray
3. 1,257 views
The equilibrium constant is 16 for the gas phase reaction SO2 + NO2 <--> SO3 + NO at a certain temperature. If 3.0 moles each of
1. 3 answers
2. asked by Amanda
3. 1,157 views
What was the most popular activity among the students surveyed?
1. 0 answers
2. asked by person
3. 1,148 views
A 150-g block on the end of a spring with a spring constant of 35 N/m is pulled aside 25 cm and released from rest. In the
1. 0 answers
2. asked by Anonymous
3. 1,128 views
Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The results showed that the
1. 2 answers
2. asked by Ray
3. 1,116 views
4.the amount in an account which was opened 180 days ago is RM205. iF the account was offered a simple interest of 5 percent per
1. 4 answers
2. asked by fizz
3. 1,055 views
On a steamy mirror wipe away just enough to see your full face. How tall will the wiped are be compared with the vertical
1. 1 answer
2. asked by joe
3. 1,022 views
The areas of corresponding faces of two similar triangular prisms are 49cm squared and 25cm squared. What is the ratio of the
1. 1 answer
2. asked by Kasie
3. 1,021 views
travaille dans un magasin. ( rewrite the article and the noun) The salesclerk
1. 4 answers
2. asked by ken
3. 1,009 views
The mass of watch glass is 24.5 g , the mass of watch glass plus white crystals befor drying is 29.1g , and the mass of watch
1. 2 answers
2. asked by Mariam
3. 1,004 views
A sociologist is interested in the relation between x = numberof job changes and y = annual salary (in thousands of dollars)
1. 0 answers
2. asked by John
3. 990 views
The anode (positive terminal) of an X-ray tube is at a potential of +125000 V with respect to the cathode (negative terminal).
1. 0 answers
2. asked by Elise
3. 988 views
what sum of money will become RM15000 in three year at a simple interest rate of 8% per annum?
1. 2 answers
2. asked by fizz
3. 942 views
8.Mary invested RM3000 in two accounts, some at 12% per annum and the rest at 8 percent per annum.Her total interest for one
1. 1 answer
2. asked by fizz
3. 931 views
In the. Reaction (Na2co3+CaCl2-->2NaCl+caco3)The precipitate is :
1. 1 answer
2. asked by Mariam
3. 904 views
Manhole explosions (usually caused by gas leaks and sparks) are on the rise in your city. On any given day, the manhole cover
1. 6 answers
2. asked by A
3. 903 views
Consider a fire alarm that senses the environment constantly to figure out if there is smoke in the air and hence to conclude
1. 5 answers
2. asked by A
3. 833 views
Explain a real-world problem that you used math to solve. What mathematical expressions did you use in your problem solving?
1. 6 answers
2. asked by Stacy
3. 818 views
Table 1: Temperature and volume dataTrial Temperature (Celsius) Volume (mL) Starting Volume Room Temperature = Hot Water Trial 1
1. 0 answers
2. asked by Char
3. 815 views
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a
1. 0 answers
2. asked by Lena
3. 796 views
Mrs Chan has twice as many $5 notes as $10 notes and twice as many $10 notes as $50 notes. She has a total of $1080. How many
1. 1 answer
2. asked by Shannon Toh
3. 792 views
Find the number of term s in the following arithmetic sequence.3, 9, 15, 21... 123
1. 1 answer
2. asked by Anonymous
3. 790 views
The Great GatsbyWhy did daisy and Tom spend a year in France Answer Are They wanted their little girl to learn French There was
1. 1 answer
2. asked by snow
3. 763 views
A survey of an urban university (population of 25,450) showed that 878 of 1,119 students sampled supported a fee increase to
1. 2 answers
2. asked by Ray
3. 755 views
A particle of mass m starts from rest and slides on a polished track around a vertical circular loop of radius a as shown. Show
1. 1 answer
2. asked by lexis
3. 749 views
How did the Fugitive Slave Act and the Kansas-Nebraska Act further divide the North and South?What role did the concept of
1. 3 answers
2. asked by TTR+S<3
3. 744 views
miss Thao owns a small hotel with 30 identical rooms. she finds that if she charges a price of 12 dollars ( or less) per room
1. 2 answers
2. asked by nhokaishiteru
3. 740 views
discuss the contribution of computer in the development of science and technology
1. 1 answer
2. asked by shumaila.imtiaz
3. 734 views
Scientific name for cow liver (used for a bio lab)
1. 1 answer
2. asked by Pink
3. 726 views
HCL acid is available as a stock solution with a concentration of 10 mol/L. If you need (2.100*10^0) L of (2.3*10^0) mol/L
1. 6 answers
2. asked by Han
3. 703 views
I've been working on this problem for close to an hour now and keep getting very wrong numbers... The two objects with different
1. 0 answers
2. asked by Confused
3. 694 views
a) 45.02% of the sample remains after 85 days. Consider how you can use the percent of Ir-192 remaining and the number of days
1. 3 answers
2. asked by ACDub
3. 676 views
solve the equation 5sin(θ -pi/6)=8cosθ for values of 0<=θ <=2pi
1. 2 answers
2. asked by bon
3. 665 views
For an article to be considered scholarly, what element must it include?A: Detailed diagrams of the concepts presented
1. 0 answers
2. asked by amy
3. 656 views
HCL acid is available as a stock solution with a concentration of 10 mol/L. If you need (9.0*10^-1) L of (2.50*10^0) mol/L
1. 4 answers
2. asked by Han
3. 651 views
In an experiment we have 4 liters of AlAin water in contain or A , and 2 liters of dubai water in contain out B . The alkalinity
1. 1 answer
2. asked by Mariam
3. 645 views
Which of the following facts could be best used when supporting Kurdish independence?A. Most of the Kurdish people are not Shia
1. 10 answers
2. asked by Anonymous
3. 643 views
Write an algebraic expression for "15 less than the product of the square of x and 5."
1. 1 answer
2. asked by Bill
3. 635 views
amy is 5 feet tall shes standing 12 feet from a street light if amy's shawdow is 4 feet long which porportion could be used to
1. 2 answers
2. asked by kay
3. 632 views
Fred is 10 yrs older than Ted. In 3 yrs time Fred will be 3 times as old as Ted.Let Fred be x yrs old now. Write an equation to
1. 1 answer
2. asked by David
3. 631 views
I am stuck with both of these questions. Thanks in advanced!1. If one tone has a frequency of 110 Hz and another tone is played
1. 2 answers
2. asked by Liz
3. 627 views
1.2g of NaCl as used to prepare 200 ml solution , what is the molar concentration of NaCl in solution ?
1. 3 answers
2. asked by Mariam
3. 607 views
A company is producing 100 units. At this quanity, it's average total cost is $25, and it's total fixed cost is $2,000. How much
1. 0 answers
2. asked by Russ
3. 606 views
Calculate the enthalpy change, ÄH DeltaH, for the process in which 12.7g g of water is converted from liquid at 7.3 ∘ C \,
1. 1 answer
2. asked by ntombiningi
3. 605 views
A water sample has TDS of 6000mg/l and the total hardness f 60mg/l , the water can be classified as ........
1. 1 answer
2. asked by Mariam
3. 604 views
A 60 man choir sings with the sound intensity of 70 dB in a 12m distance from the choir.a) What is the average sound intensity
1. 0 answers
2. asked by Physics: Sound Intensity?
3. 604 views
Find the distance on a flat screen between the principal image and the second order bright fringe for red
1. 1 answer
2. asked by ML
3. 600 views
If i change the concentration of the 3% hydrogen peroxide solution to 1.5%, am I changing its concentration or percent
1. 1 answer
2. asked by Pink
3. 599 views
In TDS experiment , the mass of the empty beaker was 25.683g , and the mass of the beaker after water evaporated 25.687 g , if
1. 1 answer
2. asked by Mariam
3. 597 views
What career could one study with these subjects
1. 1 answer
2. asked by Anonymous
3. 570 views
A square room has 3 mirrored walls of length L with one side missing. A laser is fired from the center of the open side of the
1. 1 answer
2. asked by ML
3. 564 views
what is the concentration of phosphate in the original lake water sample if the unknown lake water sample
1. 0 answers
2. asked by Anonymous
3. 554 views
Please provide a definition of "Allocative Mechanism."
1. 1 answer
2. asked by Chrstian
3. 553 views
Oil from a drum leaks into water surrounding the drum, creating a circular oil slick 100 square feet in area.Find the scale
1. 1 answer
2. asked by breck
3. 549 views
A student mixed 40ml of 0.2m Na2co3 solution with 50 ml f 0.25M cacl2 solution , what is the except number of moles of naclkkw
1. 1 answer
2. asked by Mariam
3. 547 views
What is the equation of the line which has gradient 2, and passes through midpoint of (3,4) and (5,6)
1. 1 answer
2. asked by Shane
3. 542 views
3coins are tossed calculate the followin probabilities p(3heads) p(2heads and 1 tail) p(3 tails)
1. 0 answers
2. asked by shumaila.imtiaz
3. 533 views
How does Iran spend its money?
1. 1 answer
2. asked by Anonymous
3. 533 views
Write the equations below in the form y = mx + c.State how many solutions each systems of linear equation have. 3x = 6y 2y - 6x
1. 1 answer
2. asked by Shane
3. 511 views
The measured experimental volume of ascetic acid in a sample of vinegar was 7% and the manufacture claimed volume is 5.8% , what
1. 3 answers
2. asked by Mariam
3. 507 views
22mL of hydrogen was collected over wter at 19C and 745mmHg. What mass of magnesium is reacted (1:1 mole ratio)
1. 1 answer
2. asked by Brett
3. 489 views
A model plane flies 18 ft per 2 seconds. What is the planes speed in miles per hour? Round to the nearest tenth.
1. 1 answer
2. asked by Ava
3. 489 views
data shows number of absent student of statistic ciass. 3,5,7,4,6,0,1,4,3,2,8,5,4,7,1,5,2,6,7,8,3,9,1,0,5,6,form a frequency
1. 1 answer
2. asked by shumaila.imtiaz
3. 484 views
The ruler now make contact with the neutral sphere.what happens to electrons?
1. 0 answers
2. asked by Mbali
3. 483 views
To remove temporary hardness we may use ?!!!
1. 2 answers
2. asked by Mariam
3. 482 views
If the equilibrium constant for a reaction A + B <----> C + D is K, which is true of the equilibrium constant K* for the
1. 1 answer
2. asked by Chloe
3. 479 views
Solve 2y - 5x = 3 and x + y = 5 using substitution.
1. 1 answer
2. asked by Shane
3. 475 views
solve the equation 5sin(θ -pi/6)=8cosθ for values of 0<=θ <=2pi
1. 0 answers
2. asked by bon
3. 467 views
a bus decreases its speed from 80kmh-1to 60kmh-1 in 5 sec find the acceleration
1. 1 answer
2. asked by motion
3. 452 views
perform the given operation.Let U = {1,2,3,4,5,6,7,8,9,10} enter the answer {1,2,8} U 2,8,9}
1. 3 answers
2. asked by Mary
3. 436 views
If we put a drop of acid in a cup of natural water , the PH will ?
1. 1 answer
2. asked by Mariam
3. 433 views
How do you factor 2a^2+5x+3
1. 1 answer
2. asked by Shane
3. 432 views
identify and introduce the human rights violation
1. 0 answers
2. asked by coceka
3. 431 views
u have 7 different pass codes from a choice of 8 numbers how many possible outcomes are there
1. 1 answer
2. asked by Anonymous
3. 430 views

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