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Questions Asked on August 1, 2013

For a certain reaction, ΔH° = –76.8 kJ and ΔS° = –225 J/K. If n = 3, calculate E° for the reaction at 25°C.
1. 7 answers
2. asked by Tayla
3. 4,373 views
I need help my homework and when I post I don't get an response what do I have to do for someone look at my homework question.Li
1. 2 answers
2. asked by April
3. 394 views
A rectangular field has a length that us 2 meters less than 3 times the width. The perimeter is 188 meters. Find the dimensions
1. 1 answer
2. asked by Jim
3. 474 views
Under what circumstances does it appear that paleolithic humans first used boats?
1. 3 answers
2. asked by Alex
3. 452 views
From a standard 52 card deck, how many 5 card hands will have 2 clubs and 3 hearts?
1. 1 answer
2. asked by joe
3. 2,632 views
Write the ratio 2.7kg to 1.8kg as a fraction to the simplest form, with whole numbers in the numerator and denominator.
1. 3 answers
2. asked by Brenda
3. 1,303 views
Heather has divided $8000 between two investments, one paying 8% and the other paying 6%. If the return on her investment is
1. 3 answers
2. asked by Scott
3. 6,704 views
Business Investigation Expenditures. During January and February of the current year, Big Bang LLC incurs $3,000 in travel,
1. 0 answers
2. asked by jose
3. 913 views
A student was performing an extraction procedure of o-Xylene from water into octanol. The total mass of o-Xylene was 0.10 gram
1. 1 answer
2. asked by Sahara
3. 481 views
using simple interest on a loan at 8.4% for one year making monthly payments. Find the APR on a $5000 loan.
1. 1 answer
2. asked by Scott
3. 371 views
Ka1 = 4.5E-7 and Ka2 = 4.7E-11 for the carbonate system. Ksp is 5.0E-9 and Kw =1.0E-14. A town’s groundwater has [Ca2+] = 37
1. 0 answers
2. asked by Michele
3. 569 views
Suppose that to land on Free Parking in the game of Monopoly, you will need to roll a 3, and to land on Chance you will need to
1. 1 answer
2. asked by emma
3. 377 views
Imagine that you are doing research for a term paper in your English class and you have chosen the topic of “expected winnings
1. 0 answers
2. asked by emma
3. 553 views
a)the E0 for the reactions 2HOCl + 2H+ + 2e- → Cl2 + 2H20 and Cl2 + 2e- → Cl- are 1.63 and 1.396 volts respectively. Write
1. 2 answers
2. asked by Dave
3. 670 views
To win the jackpot in a lottery in Iowa, participants have to select 6 unique winning numbers out of the numbers 1 through 49 in
1. 2 answers
2. asked by emma
3. 676 views
As you follow your favorite NBA basketball team’s statistics, you notice the point guard is successfully shooting 85% from the
1. 2 answers
2. asked by emma
3. 596 views
how many ways can a 3 person subcommittee be selected from a committee of 7 people
1. 2 answers
2. asked by Scott
3. 1,172 views
from a standard 52 card deck, how many 7 card hands have exactly 5 spades and 2 hearts?
1. 1 answer
2. asked by joe
3. 835 views
Yani wants to make a scale diagram of the floor plan of his school. He wants his diagram to fit on an 8.5in. by 11in. sheet of
1. 1 answer
2. asked by Anonymous
3. 888 views
Find all solutions of 4(cos(x))**2-4 sin(x)-5=0 in the interval (6pi, 8pi)I tried to work it out and got: 4(cos**2x)-4cosx -9 =
1. 2 answers
2. asked by Holly
3. 957 views
Yani wants to make a scale diagram of the floor plan of his school. He wants his diagram to fit on an 8.5in. by 11in. sheet of
1. 1 answer
2. asked by Please Help!!!
3. 624 views
A computer chip on a circuit board has a rectangular shape, with a width of 6mm and a length of 9mm. Plans for the circuit board
1. 1 answer
2. asked by Anonymous
3. 1,053 views
A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.800 s.(
1. 1 answer
2. asked by Justin
3. 762 views
19 cars in a circle at a boom box competition produce a 130 dB sound level at the center of the circle. What is the average
1. 0 answers
2. asked by Justin
3. 448 views
The amplitude of a sound wave is measured in terms of its maximum gauge pressure. By what factor does the amplitude of a sound
1. 1 answer
2. asked by Justin
3. 573 views
An 8 hour exposure to a sound level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.850 cm diameter
1. 0 answers
2. asked by Justin
3. 702 views
(a) By what factor is one sound more intense than another if the sound has a level 17.0 dB higher than the other?(b) If one
1. 0 answers
2. asked by Justin
3. 509 views
Of the 5,352 requests for medical records, 4,257 were located within the 20-minute time frame established by the supervisor as a
1. 1 answer
2. asked by Karolina
3. 425 views
how many moles of Mg2+ and NO3(there is a negative sign on top of the 3 in NO3)form for each mole of Mg(NO3)2 that dissolves?
1. 1 answer
2. asked by mariana
3. 735 views
The index of refraction of Ruby is less than the index of refraction of diamond. Why?
1. 1 answer
2. asked by silent_klr
3. 638 views
The direction of magnetic lines of force change if an iron piece is placed in its field. Why?
1. 0 answers
2. asked by silent_klr
3. 301 views
Do you think the use of advanced technology like functional MRI will eventually make animal testing obsolete?
1. 1 answer
2. asked by Tise
3. 351 views
Please grade this and make corrections.ACT writing prompt: The Children's Internet Protection ACT (CIPA) requires all school
1. 1 answer
2. asked by Anonymous
3. 579 views
After one month of operation the health information services at community health center determined that there were two reords
1. 2 answers
2. asked by Johnnie
3. 465 views
2. The Computer Systems Department has eight faculty, six of whom are tenured. Dr. Vonder, the chair, wants to establish a
1. 1 answer
2. asked by Anna
3. 765 views
Compute the mean and variance of the following discrete probability distribution.x P(x) 2 .50 8 .30 10 .20 Please assist and
1. 1 answer
2. asked by Anna
3. 739 views
New Process, Inc., a large mail-order supplier of women’s fashions, advertises same-day service on every order. Recently, the
1. 1 answer
2. asked by Anna
3. 1,011 views
Hi there,I am a senior trying to get some assistance with one of my many papers. Thank you!
1. 1 answer
2. asked by Anna
3. 329 views
According to the “January theory,” if the stock market is up for the month of January, it will be up for the year. If it is
1. 1 answer
2. asked by Anna
3. 855 views
1. Explain why you think it is important to put observations in writing. How can observation enrich our writing?2. At what point
1. 4 answers
2. asked by shay
3. 570 views
quadratic equationsolve the equation by factorization 27x^2 - 126x = 0 So x=? or x=?
1. 1 answer
2. asked by gean
3. 425 views
A statistics student hands each of 300 classmates 2 cookies side by side on a plate. Of the 300 students, 171 choose the cookie
1. 2 answers
2. asked by Kit
3. 427 views
Quadratic equationSolve= square root(1-y) + square root(12+y) -5 =0
1. 1 answer
2. asked by Chiew Poh Joong
3. 400 views
I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the
1. 1 answer
2. asked by alex
3. 546 views
the sphere of influence of an organization that renders a service in your area.
1. 3 answers
2. asked by masingita
3. 545 views
A dilute perchloric acid solution was standardized by dissolving 0.2445 g of primary standard sodium carbonate in 50 mL of the
1. 4 answers
2. asked by Gloria
3. 3,127 views
The chief financial officer of a home health agency needs to determine the present value of a $10,000 investment received at the
1. 0 answers
2. asked by April
3. 610 views
evolutionary psychology and behavior geneticsa. have little in common b. acknoweledge the interactions of heredity and
1. 1 answer
2. asked by meka
3. 497 views
A Kjeldahl analysis was preformed upon a 0.055 g sample of impure biguanide (C2H7N5, fw=101.1). The liberated ammonia, collected
1. 2 answers
2. asked by Gloria
3. 991 views
if a skydiver with a surface area of 2m sq falls at a steady speed of 55m/s with a force of 900N what is the pressure on her?
1. 0 answers
2. asked by Anonymous
3. 303 views
What is the smallest possible positive integer x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77 ?
1. 1 answer
2. asked by KK
3. 491 views
There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets,
1. 3 answers
2. asked by Marian
3. 560 views
the main problem with informal theories is they are based on .a.bias b.emotion c. tradition rather than study can someone please
1. 4 answers
2. asked by susue
3. 397 views
a famous quotation on child development attributed to the Jesuits most emphasizes the importance ofa.early childhood experiences
1. 1 answer
2. asked by susue
3. 468 views
An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to
1. 1 answer
2. asked by Jason
3. 408 views
language development is initially triggereda.socially b.psychologically c.biologically d.by parent contact I know that letter d
1. 1 answer
2. asked by susue
3. 498 views
a 2.00 kg rock is dropped from a bridge to the water 50.0m below. what is the velocity as it hits the water? what is its kinetic
1. 1 answer
2. asked by hannah
3. 383 views
If y is a positive integer, for how many values of y is 3/2y greater than 1/4 and less than 1/2?F. 0 G.1 H.2 I. 3 J.4 Check
1. 1 answer
2. asked by Anonymous
3. 478 views
A ground observer sights a weather balloon to the east at an angle of elevation of 15º. A second observer 3 miles to the east
1. 1 answer
2. asked by William320
3. 1,137 views
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical
1. 1 answer
2. asked by Kris
3. 1,061 views
A piece of material 15 cm long by 2.5 cm square is in compression under a load 100 kN.If the modulus of elasticity of the
1. 1 answer
2. asked by ripon
3. 417 views
Please point out mistakes,give feedback, and grade.ACT prompt: In recent years, many schools have adopted a "Great Books"- based
1. 4 answers
2. asked by Anonymous
3. 631 views
In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes
1. 1 answer
2. asked by Rosie
3. 1,282 views
kenny can assemble a desk in 40 minutes while his friend paul can assemble the same desk in 20 minutes. kenny worked for 10
1. 1 answer
2. asked by Algebra
3. 442 views
sam needs to clean the window on his house. he has a 25-foot ladder and places the base of the ladder 10 feet from the wall of
1. 1 answer
2. asked by Nick
3. 1,030 views
Two example of social issue. Identify a social issue in your local community and describe it shortly .
1. 4 answers
2. asked by Emely
3. 657 views
Increasing numbers of communities are addressing the need for out-of-school care due to the relationshipbetween A. teen
1. 3 answers
2. asked by Brenna
3. 1,091 views
The chief financial officer of a home health agency needs to determine the present value of a $10,000 investment received at the
1. 1 answer
2. asked by April
3. 969 views
There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets,
1. 2 answers
2. asked by Stat
3. 449 views
What are causes of social issue.what are five factors of social issue.the impact of the contemporary of social issue. How the
1. 12 answers
2. asked by Emely
3. 2,506 views
where could an apostrophe be put for plural women 1.women's or womens' pl clarify .
1. 3 answers
2. asked by R S Telagathoty
3. 384 views
In a population that is in Hardy–Weinberg equilibrium for two alleles, C and c, 16% of the population shows a recessive trait.
1. 1 answer
2. asked by Jen
3. 1,567 views
A 30 ml sample of of 0.150 m hydrazoic acid (ka = 4.50x10^-4 ) is titrated with a 0.100 m NaOH what is the ph after the ff
1. 1 answer
2. asked by Omi
3. 654 views
Carol Miller went to Europe and forgot to pay her $850 mortgage payment on her New Hampshire ski house. For her 55 days overdue
1. 1 answer
2. asked by jeff
3. 445 views
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
1. 1 answer
2. asked by Kris
3. 631 views
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
1. 1 answer
2. asked by Kris
3. 404 views
let y be the function of x defined implicitly by the equation x^2 -2xy +2y^4=1. find the value of x where y obtains its maximum
1. 1 answer
2. asked by barbra
3. 1,014 views
In a laboratory population of diploid, sexually reproducing organisms a certain trait is determined by a single autosomal gene
1. 1 answer
2. asked by penny
3. 930 views
how many popsicles are in 2 1/2 dozen
1. 7 answers
2. asked by loli
3. 419 views
A bird sitting 16 feet above the ground in an apple tree dislodges an apple. After how many seconds does the apple land on the
1. 2 answers
2. asked by Need now
3. 814 views
Consider the following unbalanced reaction.P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
1. 1 answer
2. asked by Kris
3. 712 views
which one of the following statements is NOT true when a partnership is created between a parent and a teacher a. parents are
1. 8 answers
2. asked by debra
3. 1,872 views
Explain how new species can originate without geographical barriers.
1. 0 answers
2. asked by Annie
3. 321 views
How do I figure out taxes associated with stock purchased in 2010 for $1000 held for 5 mths. Then sold for $1200 I am in the 28%
1. 1 answer
2. asked by Tricia
3. 419 views
Consider the following unbalanced reaction.P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
1. 11 answers
2. asked by Kris
3. 938 views
If 3 "A" cans can hold 4 "B" cans and 3 "B" cans hold 5 "C" cans than how many "A" cans are need to hold 20 "C" cans ?
1. 1 answer
2. asked by vincent
3. 328 views
There were 100 pairs of socks 30% of them were sold on Monday and 40% of the remainder were sold on Tuesday. How many pairs of
1. 4 answers
2. asked by vincent
3. 378 views
You are creating a customer database for Modesto Nuts minor league baseball team. Draw a project network given the information
1. 0 answers
2. asked by kim
3. 1,745 views
Commercial brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows.Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g) (Cu does
1. 8 answers
2. asked by Kris
3. 2,622 views
1. Which of the following scenarios would be the best example of a time when observation would be authentic assessment?A. A
1. 2 answers
2. asked by Nai
3. 1,166 views
Nitric acid is produced commercially by the Ostwald process, represented by the following equations.4 NH3(g) + 5 O2(g) 4 NO(g) +
1. 0 answers
2. asked by Kris
3. 972 views
Bacterial digestion is an economical method of sewage treatment.5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) +
1. 0 answers
2. asked by Kris
3. 752 views
BaO2(s) + 2 HCl(aq) H2O2(aq) + BaCl2(aq)What amount of hydrogen peroxide should result when 1.00 g of barium peroxide is treated
1. 1 answer
2. asked by Kris
3. 677 views
Find the equation of the line tangent to f(x)=3x^2-2x-1 at the point where x=2
1. 1 answer
2. asked by gerald
3. 454 views
Can someone help me find value of x. please show step by step examples6/x = 7/x+3
1. 1 answer
2. asked by Alaska Diamond
3. 322 views
I need help figuring this out.If an object 3.9 feet tall casts a shadow 11.7 feet tall. How tall would the shadow be if the
1. 1 answer
2. asked by Alaska Diamond
3. 470 views
Can someone show me step by step examples of simplifying3√5/64 thank you
1. 1 answer
2. asked by Alaska Diamond
3. 834 views
A swimmer heads directly across a river, swimming at 1.9 m/s relative to the water. She arrives at a point 50 m downstream from
1. 2 answers
2. asked by Jacob
3. 2,014 views
I need help!!!I need to simplify √6 (9-√6) + 7√6
1. 1 answer
2. asked by Alaska Diamond
3. 294 views
Radicals are so confusing. Can someone show me step by step please. Im lost5/8+√7
1. 1 answer
2. asked by Alaska Diamond
3. 343 views

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