Friday
May 24, 2013

# Homework Help: College

College Chemistry
a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?
Monday, October 24, 2011 at 2:27am

College Algebra
y varies directly as the third power x and inversely as Z. If y=16 when x=4 and z=8,find y when x=9 and z=6
Sunday, October 23, 2011 at 9:58pm

college math
A community 5K run will award \$50 to the winner. 60 people enter the race, and they each pay an entry fee of \$20. Assuming they are all equally likely to win, what is a fair price for the competition? Round to the nearest cent Can anyone help me get started on this one?
Sunday, October 23, 2011 at 5:18pm

college physics
A 0.384 kg puck, initially at rest on a horizon- tal, frictionless surface, is struck by a 0.189 kg puck moving initially along the x axis with a speed of 2.7 m/s. After the collision, the 0.189 kg puck has a speed of 1.7 m/s at an angle of 28 to the positive x axis. ...
Saturday, October 22, 2011 at 12:04am

Math
A college basket ball player makes 80% of her free throws. Suppose this probability is the same for each free throw she attempts. The probability that she makes all of her first four free throws and then misses her fifth attempt this season is
Friday, October 21, 2011 at 12:08am

Finance
5. John and Daphne are saving for their daughter Ellen's college education. Ellen just turned 10 (t=0), and she will be entering college 8 years from now (at t=8). College tution and expenses at State U. are currently \$14,500 a year, but they are expected to increase at a ...
Thursday, October 20, 2011 at 11:13pm

college chemistry
Calculate the equilibrium concentration of H3O+ in the solution if the initial concentration of C6H5COOH is 6.0×10^-2. Kc=6.3 *10^-5
Thursday, October 20, 2011 at 10:12pm

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled \$ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
Thursday, October 20, 2011 at 6:47pm

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled \$ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
Thursday, October 20, 2011 at 6:15pm

statistics
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. a. What proportion of students drank 7 or more cups of ...
Thursday, October 20, 2011 at 2:23pm

A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball ...
Thursday, October 20, 2011 at 4:17am

college math
2 - x 10. lim 2 x-0 x + 4 Please, help me, thanks
Wednesday, October 19, 2011 at 12:20am

college math
Use a table to frind the indicated limit. 3 7. lim(4x ) x-2 2 8. lim (2x + 1) x-3 x + 1 9. lim 2 x-0 x + 1
Wednesday, October 19, 2011 at 12:16am

College math
Please, help me with this problem: frind the derivative of each function at the given number. 21. f(x)= -4x + 5 at 3 22. f(x)= -4 + 3x at 1 thanks
Wednesday, October 19, 2011 at 12:09am

college math
find the slope of the tangent line to the graph of f at the given point. Graph f and the tangen line. 9. f(x) = 3x +5 at (1.8) 10. f(x)=2x + 1 at (-1,3) Please, help me with this problems. thanks
Wednesday, October 19, 2011 at 12:04am

statistics
There are 44 mathematics major and 163 computer science majors at the college. How many ways are there to pick 2 representatives, so that one is a mathematics major and the other is a computer science major?
Wednesday, October 19, 2011 at 12:01am

College Physics
In Chapter 3 we learned that the force of air drag on an object moving rapidly through the air is proportional to v2, where v is the speed of the ball relative to the air. The same relation applies to the force of the wind on the blades of a wind turbine (Figure 9.4), where v ...
Tuesday, October 18, 2011 at 9:51pm

College Physics
A rod of mass 4.3 kg and length 4.3 m hangs from a hinge as shown in Figure P9.28. The end of the rod is then given a “kick” so that it is moving at a speed of 2.3 m/s. How high will the rod swing? Express your answer in terms of the angle (in degree) that the rod ...
Tuesday, October 18, 2011 at 8:46pm

College Algebra
Factor the polynomial by pulling out the GCF 6r^2+12r-15
Tuesday, October 18, 2011 at 5:49pm

College Algebra
Show all work solve the Polynomial inequality and express the solution in set notation. (3p-2p^2)/(4-p^2)<(3+p)/(2-p)
Tuesday, October 18, 2011 at 3:47pm

Statistics: Calculate a Pearson's r
In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The data are provided in the following table. Number of Cups of Coffee 3, 2, 4, 6, 5, 1, 7, 3, 2, 4 Stress Level 5, 3, 3, 9, 4...
Tuesday, October 18, 2011 at 3:25pm

Statistics: Percentile Rank
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. A. What proportion of students drank 7 or more cups of ...
Tuesday, October 18, 2011 at 1:48am

College Physics
For the system of two crates and a pulley in Figure P9.14, (m1 = 28.5 kg, m2 = 10 kg, mpulley = 8 kg), what fraction of the total kinetic energy resides in the pulley?
Monday, October 17, 2011 at 12:35pm

College Chemistry
i was told to Convert 1 metric ton to grams ore then to grams TiO2 (using the 0.75% in the ore), then to g TiCl4 (using the 70%%) and finally to TiO2 final product (using the 93.0%)for the following questions, but im stuck after converting the metric ton to grams About half ...
Monday, October 17, 2011 at 1:39am

College Algebra
I need to find the domain of f, the excluded values of f, the domain of (fg)(x); find (f+g)(-5), (f-g)(x), and (fg)(x) to the problem of: Let f(x)=(7x+1)/(3x+2) and g(x)=6x+5.
Sunday, October 16, 2011 at 11:09pm

Create a rational function such that the graph of has vertical asymptotes at x=5 and x= -7, a hole at x=2 , and a horizontal asymptote at y = 14. By creating a rational function, you are to write rule for this function. There are many correct solutions here.
Sunday, October 16, 2011 at 11:01pm

College Chemistry
About half the world's production of pigments for paints involves the formation of white TiO2. It is made on a large scale by the chloride process , starting with ores containing only small amounts of rutile, TiO2. The ore is treated with chlorine and carbon. this produces...
Sunday, October 16, 2011 at 9:19pm

college algebra
The average rate of change of g(x) = x3 - 12x + 16 from x = -2 to x = 4 is 64 / 2 = 32. true or false
Sunday, October 16, 2011 at 9:11pm

college chemistry
How many kilocalories are released by freezing 4.6 moles of H20?
Sunday, October 16, 2011 at 7:04pm

College Chemistry
I have no idea how to do this problem, and I've been searching through my book for an hour. Help please? An energy of 2.0x10^2 kJ/mol is required to cause a cesium atom on a metal surface to lose an electron. Calculate the longest possible wavelength of light that can ...
Sunday, October 16, 2011 at 6:00pm

Accounting
Prepare a schedule that lists the components of and calculates the personal and dependent exemption amount (based on current year exemption and dependency amount) that would be included on the Brock's individual tax return based on the following information: The Brock'...
Sunday, October 16, 2011 at 1:18pm

college algebra
how long will it take an investment of \$5000 to grow to \$8000 if it is invested at 7.8% per year compounded weekly?
Saturday, October 15, 2011 at 10:10pm

statistics
draw a distribution curve that represents the following distribution of scores: results of 6th grade math test given to college students
Saturday, October 15, 2011 at 7:39pm

I am entering an essay scholarship and would love if some of you could proof read my essay. Thanks so much! Title: Be a Part of Something Greater “You have to get involved!” From the first day of school, freshman year of high school, those were the words that ...
Saturday, October 15, 2011 at 11:22am

College Physics
Find the minimum work required to carry a truckload of furniture weighing 1.99 104 N to a third-story apartment, 24.0 m above the truck.
Friday, October 14, 2011 at 3:32pm

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
Friday, October 14, 2011 at 3:32pm

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
Friday, October 14, 2011 at 3:32pm

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
Friday, October 14, 2011 at 3:32pm

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
Friday, October 14, 2011 at 3:32pm

College Physics
A 4.30 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, before compressing a spring of force constant 2.20 104 N/m. Find the maximum compression of the spring.
Friday, October 14, 2011 at 3:32pm

Scholarship
Please revise my essay by giving tip or suggestions. A scholarship like “The FATE” will help me achieve my educational & career goals. “The FATE” not only will benefit financially but it will also boost my self-confidence, give me greater power of ...
Friday, October 14, 2011 at 3:06pm

Problem 11.3 -- Kelly is a 35 year old single parent with a one-year-old son. She earns \$45,000 a year as a marketing analyst and has employer paid group life insurance worth twice her annual salary. She also participates in her employer’s 401(k) program. She has the ...
Friday, October 14, 2011 at 12:24pm

college math
Suppose \$400 is invested for 4 years at a nominal yearly interest rate that is compounded monthly, further suppose it accumulates to 817.39 after 4 years. Find the annual nominal interest rate of the investment.
Thursday, October 13, 2011 at 11:49pm

college math
Suppose \$400 is invested for 4 years at a nominal yearly interest rate that is compounded monthly, further suppose it accumulates to 817.39 after 4 years. Find the annual nominal interest rate of the investment.
Thursday, October 13, 2011 at 11:49pm

English grammar check
Choose the correct answer which corrects the following sentences without changing its meaning 1. I want to get a well-paying job. Which is why I am attending college. a. I want to get a well-paying job. Which is why I am attending college. b. I want to get a well-paying job, ...
Thursday, October 13, 2011 at 6:01pm

College Algebra
Find the center (h,k) and the radius (r) of the circle with the given equations: 1. 2(x-2)^2+2(y+5)^2=28 2. 4x^2+4y^2-12x+16y-5=0
Wednesday, October 12, 2011 at 7:31pm

College Algebra
Find f(x-1) when f(x)=4x^2+5x+4
Wednesday, October 12, 2011 at 7:29pm

College Algebra
A ferris wheel has a diameter of 320 feet and the bottom of the Ferris wheel is 9 feet above the ground. Find the equation of the wheel if the origin is placed on the ground directly below the center of the wheel.
Wednesday, October 12, 2011 at 7:23pm

college biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson stati...
Wednesday, October 12, 2011 at 5:38pm

Statistics
The mean graduation time is 5 years with a standard deviation of 6 months for the Monte Carlo College, in which the graduation time is related to the grade of the students. The class size is normally 40. Calculate how many students may graduate by the end of the fourth year. ...
Wednesday, October 12, 2011 at 5:39am

psy
I have read prior post and my book but I can not figure out what is the connection between learning theory and mechanistic and reciprocal interactionism? I am not even sure if the definitions I have are correct although my answers were graded and excepted. Compare mechanistic ...
Wednesday, October 12, 2011 at 12:24am

English 9 college prep
Wednesday, October 12, 2011 at 12:07am

college algebra
U is jointly proportional to V and W. Let k be the constant proportionality. If U = 4 when V = 8 and W = 6, find the value of k
Tuesday, October 11, 2011 at 11:39pm

college physics
A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 4.00 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block comes to rest, how ...
Tuesday, October 11, 2011 at 6:16pm

Engineering Statistics
"A study has shown that 20% of all college textbooks have a price of \$90 or higher. It is known that the standard deviation of the prices of all college textbooks is \$9.50. Suppose the prices of all college textbooks have a normal distribution. What is the mean price of ...
Tuesday, October 11, 2011 at 3:13pm

College Physics
A charged particle is hanging from the side of a wall by means of an uncharged string. The wall has a negative charge producing a horizontal electric field. The particle has a mass of .01 Kg. and charge of -80(micro)C and is suspended by a string .3m long. The electric force ...
Tuesday, October 11, 2011 at 4:19am

statistics
A city survey found that 47% of teenagers have a part time job. The same survey found that 78% plan to attend college. If a teenager is chosen at random, what is the probability that the teenager has a part time job and plans to attend college?
Tuesday, October 11, 2011 at 1:31am

College Chem
Write a balanced equation for each reaction including the state symbols of all the reactants and products Co(NO3)2. 6H2O + Ni(NO3)2.6H2O
Monday, October 10, 2011 at 9:46pm

college easy physics
Help me out with 2 multiple questions!!!!!!!!!!!!!!!!! ASAP please What is flux in general? 1. A flow of energy, so heat is an example of flux. 2. Flowing matter such as a river or an air current. 3. Flowing energy or flowing matter. 4. An amount of energy or matter passing ...
Monday, October 10, 2011 at 9:22pm

College Physics
A students stands at the top of a high vertical cliff and throws calculators into the sea. He throws the calculators horizontally with a speed of 7.4 m/s and observes that each reaches the water below 3.7 s after the release. Neglect air resistance and find (a) How far from ...
Monday, October 10, 2011 at 9:05pm

College Organic Chem
1)what is the name of the common commercial chemical that is always obtained from the reaction of fats and strong bases such as NaOH and KaOH. 2)What is a physical property that you can tell the difference between glyceryl trimyristate abd myristic acid that is the same color ...
Monday, October 10, 2011 at 9:03pm

College Physics
The driver of a 1600 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 23.0 m. (a) Find the net work done on the car. (b) Find the magnitude and direction of the force that does this work. (Assume this force is constant.)
Monday, October 10, 2011 at 9:43am

english-poetry
what would you say this poem is about THE CAROL BURNETT SHOW by Joan Jobe Smith After my father died and I had to drop out of college for the second time to go back to being a go-go girl, my mother came to live with me to take care of my kids although she didn’t approve ...
Sunday, October 9, 2011 at 11:16pm

College Algebra
A bank loaned out \$53,000, part of it at a rate of 12% per year and the rest at a rate of 5% per year. If the interest received was \$4960, how much was loaned at 12%? Show all work.
Sunday, October 9, 2011 at 9:43pm

College Algebra
How many liters of 80% hydrochloric acid must be mixed with 40% hydrochloric acid to get 15 liters of 65% hydrochloric acid? Write your answer rounded to three decimals. Show all work.
Sunday, October 9, 2011 at 9:29pm

college chem
sodium sulfide, Na2S, is used in the leather industry to remove hair from hides. The Na2SO4 + 4C -> Na2S +4CO(g) so suppose you mix 15(g) of Na2SO4 and 7.5g of C. which is the limiting reactant AND what is mass of Na2S that is produced?
Sunday, October 9, 2011 at 12:21pm

i have an essay and ive been researching the topic like for freaking ever and i havent been able to fine anything "scholarly" through collins(my college's) libraries searching databases do you know any scholarly websites..?? Like literally ive been researching ...
Sunday, October 9, 2011 at 3:55am

College Algebra...multiplicity
Let g(x) = (x - 1)5(x + 1)6(x - 2)7. What is the multiplicity of the zero x = 1?
Sunday, October 9, 2011 at 12:36am

College Algebra
Let g(x) = (x - 1)5(x + 1)6(x - 2)7. What is the multiplicity of the zero x = 1?
Sunday, October 9, 2011 at 12:22am

College Algebra
let g(x) = 17x3 - 3x2 + 14x. What is the degree of this polynomial function?
Sunday, October 9, 2011 at 12:09am

College Algebra
Let g(x) = 17x3 - 3x2 + 14x. Find the sum of all of the coefficients of g(x).
Sunday, October 9, 2011 at 12:07am

Statistics
Each year, thousands of college seniors take the Graduate Record Examination (GRE). Assume the scores are transformed so they have a mean of 600 and a standard deviation of 150. Furthermore, the scores are known to be normally distributed. Determine the percentage of students ...
Saturday, October 8, 2011 at 11:43pm

College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson ...
Saturday, October 8, 2011 at 5:23pm

College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson ...
Saturday, October 8, 2011 at 2:44pm

College biology
In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey Poisson ...
Saturday, October 8, 2011 at 2:43pm

College Chemistry
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass? The sample is 2.763 grams How much of the 2.763 gram sample is water? I need an amount in grams. Amount of anhyrdate...
Saturday, October 8, 2011 at 9:01am

College Physics
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 2.2 m-by-4.1 m panels that have ...
Saturday, October 8, 2011 at 3:17am

College Chemistry
Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O What mass of water is liberated when a 2.763 gram sample is heated to constant mass?
Saturday, October 8, 2011 at 1:13am

College Physics
In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees celcius and the temperature outside is T(out) = 0 degrees celcius. The walls have fiberglass insulation, which dominates the heat conduction ...
Saturday, October 8, 2011 at 12:28am

College Physics
The top layer of your goose down sleeping bag has a thickness of 5.0 cm and a surface area of 1.0 m^2. When the outside temperature is -18 degrees celcius you lose 24 Cal/hr by heat conduction through the bag (which remains at a cozy 34 degrees celcius inside). Assume that you...
Friday, October 7, 2011 at 11:36pm

College Physics
The top layer of your goose down sleeping bag has a thickness of 5.0 cm and a surface area of 1.0 m^2. When the outside temperature is -18 degrees celcius you lose 24 Cal/hr by heat conduction through the bag (which remains at a cozy 34 degrees celcius inside). Assume that you...
Friday, October 7, 2011 at 11:36pm

College Physics
A 2.30-cm-thick wood floor covers a 4.0 m x 5.5 m room. The subfloor on which the flooring sits is at a temperature of 16.4 degrees celcius, while the air in the room is at 19.3 degrees celcius. What is the rate of heat conduction through the floor? Use 0.200 W / m x K for the...
Friday, October 7, 2011 at 11:32pm

College Chemistry
What is the final temperature, in oC, after a 26.5 g piece of ice, at 0oC, is placed in a styrofoam cup with 122 g of water initially at 73.8oC the specific heat of water = 4.184 JK-1g-1 The heat of fusion of ice = 333 Jg-1
Friday, October 7, 2011 at 10:11pm

statistics
SAT Exam Scores – A school administrator wonders if students whose first language is not English score differently on the math portion of the SAT exam than students whose first language is English. The mean SAT math score of students whose first language is English is 516...
Friday, October 7, 2011 at 9:18am

English-Writing
Many students fear the thought of college. It is not only the transition from high school that intimidates them, but large classrooms, two hour seminars, and worse part, the fear of failure is what keeps them from going. Hence either take shorter hours, gap years, or some even...
Friday, October 7, 2011 at 6:49am

college chemistry
For the equilibrium Br2 + Cl2 goes to 2BrCl at 400 K ,Kc = 7.0. 0.30 of Br2 and 0.30 of Cl2 are introduced into a 1.0 L- container at 400 K.a) What will be the equilibrium concentration of Br2? b) What will be the equilibrium concentration of Cl2 ? c) What will be the ...
Friday, October 7, 2011 at 4:11am

college chem
what volume of 0.955 M HCl, in milliliters, is required to titrate 2.152g of Na2CO3 to the equivalent point? Na2CO3(aq) + 2HCl(aq) 2NaCl(aq) + CO2(g) + H2O(1) can this please be explained in simple step by steps? i am sick and i am having trouble understanding anything.
Thursday, October 6, 2011 at 8:25pm

College Chemistry
How many milliliters of 0.100 M HNO3 are needed to neutralize the following solutions? A. 45.0 mL of 0.667 M KOH B. 58.5 mL of 0.0100 M Al(OH)3
Thursday, October 6, 2011 at 6:27pm

HELP ASAP ( COLLEGE STATISTICS)
Describe in words the nature of the relationship between each pair of variables as indicated by the value of the correlation coefficient. Be sure to include a. the direction of the relationship. b. the strength of the relationship. c. a verbal description of the way the ...
Thursday, October 6, 2011 at 4:51pm

English
My essay, the writing centre told me that my introduction essay was not to the point of being a succesful student. So I changed it. Here, could you please help me rephrase it .. My two most important points are the TWO STEPS : Daily and punctual attendance and dedication to ...
Thursday, October 6, 2011 at 2:58pm

college algebra
SKILL MAINTENANCE. Calculate: 2b + 8 – 3b = 10 + 11b – 2 – 12b
Thursday, October 6, 2011 at 11:43am

Statisics
35%of adult Americans are regular voters. A random sample of 250 adults in a medium-size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and comment on your results... Can you show ...
Wednesday, October 5, 2011 at 11:54pm

College Algebra
(2.2 x 10^-3)(4.3 x 10^8) I get 9.46*10^5 is this correct?
Tuesday, October 4, 2011 at 10:28pm

College Algebra
Which of the following is equivalent to (2x-3)^2=25 ? A) 2x - 3 = 5 B) 2x - 3 = -5 C) 2x - 3 = 5 and 2x - 3 = -5
Tuesday, October 4, 2011 at 8:40pm

Math
Determine whether the following statement makes sense or does not make sense, and explain your reasoning: By modeling attitudes of college freshmen from 1969 through 2006, I can make precise predictions about the attitudes of the freshman class of 2020. A) This makes sense ...
Tuesday, October 4, 2011 at 7:59pm

college chem
Ethanol (C2H5OH) boils at a temperature of 78.3oC. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 20.0 g sample of ethanol initially at a temperature of 13.6oC. The specific heat of ethanol is approximately constant at 2.44 JK-...
Tuesday, October 4, 2011 at 3:56pm

College Chemistry
Calculate the concentrations of the following solutions, assuming the volumes are exact measurements: a. 18.64g of sodium hydroxide in 350mL of solution b. 8.97mL of 18M hydrochloric acid in 250mL of solution
Tuesday, October 4, 2011 at 2:50pm

college physics
Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.
Tuesday, October 4, 2011 at 12:36am

college physics
If you are sitting at home in your room, the walls 1. emit visible light with a peak wavelength close to 0.5 micrometer. 2. emit thermal radiation in the near infrared with a peak wavelength close to 1 micrometer. 3. emit thermal radiation in the mid-infrared with a peak ...
Tuesday, October 4, 2011 at 12:36am

college prep english
Ok so long story short I need help with homework......I have 3 questions on genre and its 2 genre's how do I know which one to write about ?
Monday, October 3, 2011 at 8:17pm

college general chem
If 15.0 of is dissolved in enough water to form 270 of solution, what is the molarity of the solution? What is the oxidation state of an individual sulfur atom in ? What is the oxidation state of an individual nitrogen atom in ?
Monday, October 3, 2011 at 7:38pm

college general chem
If 15.0 of is dissolved in enough water to form 270 of solution, what is the molarity of the solution? How many milliliters of 4.45×10−2 contain 4.05 of solute
Monday, October 3, 2011 at 7:31pm

college algebra
If the average rate of change of g(x) from x = 7 to x = 10 is -80, and if g(7) = 400, then find g(10).
Sunday, October 2, 2011 at 8:46pm

college Algebra
If the average rate of change of g(x) from x = 1 to x = 5 is 17.5, and if the average rate of change of g(x) from x = 5 to x = 10 is 35, then what is the average rate of change of g(x) from x = 1 to x = 10?
Sunday, October 2, 2011 at 8:13pm

College Chemistry
Zinc, copper, lead, and mercury ions are toxic to Atlantic salmon at concentrations of 6.42 times 10 to the -2 mM, 7.16 times 10 to the -3 mM, 0.965 mM, and 5.00 times 10 to the -2 mM, respectively. What are the corresponding concentration is milligrams per liter? A. ...
Sunday, October 2, 2011 at 7:03pm

College Chemistry
How many grams of solute are needed to prepare each of the following solutions? A. 1.000 L of 0.180 M NaCl B. 250.0 mL of 0.150 M CuSO4 C. 500.00 mL of 0.355 M CH3OH
Sunday, October 2, 2011 at 6:39pm

college physics
How many revolutions per minute would a 18 m-diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point?
Sunday, October 2, 2011 at 6:36pm

College Math
I am really struggling with this Fibonacci number problem. If the greates common factor of "m" and "n" is "r", then the greatest common factor of Fm and Fn is Fr. Show that this is true for m=6 and n=9. I am so confused
Sunday, October 2, 2011 at 4:07pm

chemistry
Write chemical formouls detailwise 1. Ammonium acelate 2.forric cyanide 3. Sodium sulphide 4.calcium corbonate 5.silver acelatep 6.sodium nitrate
Sunday, October 2, 2011 at 12:23pm

chemistry
Balance these equations 1. Kclo3-kcl+oz 2. K2cr2o7+h2so4-k2so4+cr2+o(so4)3+h2o
Sunday, October 2, 2011 at 12:06pm

College Math
Could you show me how to do 5z/7 - 5z/8 = 1 The answer is 56/7 But how did they get it ?
Sunday, October 2, 2011 at 9:28am

statistics
At a certain college, there were 400 science majors, 100 engineering majors, and 600 business majors. If one student was selected at random, the probbility that they are an engineering major is
Saturday, October 1, 2011 at 10:47am

College Physics
A ball is thrown upward at a speed v0 at an angle of 53° above the horizontal. It reaches a maximum height of 8.2 m. How high would this ball go if it were thrown straight upward at speed v0?
Friday, September 30, 2011 at 3:06pm

College
Does Harvard University have art & creative writing classes cause I want to become a artist & a creative writer (when writing books, short stories, novels, & poems). I'm just asking. I look on the website but it really confusd me. Please also what is REALLY Harvard ...
Friday, September 30, 2011 at 2:55pm

statistics
The credit card industry has determined that about 65% of college student ls will be late making a minimum payment when paying their credit card every year atleast once. If 10 randomly selected students who own a credit card is selected what is the mean and standard deviation ...
Friday, September 30, 2011 at 3:29am

math
You are driving home from college steadily at 95km/hour for 130km. It begins to rain and you slow to 65km/hour. You arrive home after driving 3 hours and 20 minutes. How far is your hometown from college?
Thursday, September 29, 2011 at 9:07pm

College
Is Harvard is really the best college ? also what high school grades are require to get to Harvard ??? When I be a 9th grader will they prepare me for SAT ???
Thursday, September 29, 2011 at 5:09pm

College Abstract Algebra
If H is a subgroup of G and K is a normal subgroup of G,prove that HK = KH
Thursday, September 29, 2011 at 3:59pm

College
My dream is to go to Harvard University. When I grow up I want to become an artist, & creative writer (like writing stories & stuff. Here are some questions I would like to ask you guys. Please answer these questions please I know I'm too young (age 12, 7th grade) but, I ...
Thursday, September 29, 2011 at 3:01pm

College Math
What is conditional, and identity or a contradiction ? in terms of a linear equation. Please can you give some examples
Thursday, September 29, 2011 at 1:07pm

College Math-
I hope my questions are not very silly. But here is another one I want to understand. Write an equation in slope-intercept form of the line satisfying the following conditions. through (6,7); perpendicular to x=2 My answer was 7/6(X)+2 But in truth the real answer is only y=7 ...
Thursday, September 29, 2011 at 12:20pm

College Mathematics. 3
(3t+1)/5=(t+7)/10+(t-5)/10 I solved this question through the linear equation simplification timing both sides by the least common denominator. 5 Once I did the the result was > 3t+1= 2t+14+2t-10 T= 3 However the real answer is t=0 Where am I going wrong? How am I supposed ...
Thursday, September 29, 2011 at 11:36am

College Math
Another question which is confusing. The position of an object moving in a straight line is give by s=2t^2-3t, where is s in metres and t is the time in seconds the object has been in motion.. how long will it is take the object to move 6 meters? I first used the simplfying ...
Thursday, September 29, 2011 at 11:28am

College Math
There is a question > Write the slope intercept form of the equation for the line passing through the points (-6,3) and (0,7) Now my answer started with > Slope = 7-3/0-(-6) = Slope = 2/3 Then to find the intercept > Y=mx+c 3= 2/3(-6) + c c= 7 In my opinion this is ...
Thursday, September 29, 2011 at 11:17am

early childhood education
1)according to the national center for education statistics which of th following is a false statement a)when it comes to grade and homework boys outperform girls in elementary secondary high school college and even graduate school. b)boys are more likely than girls to be ...
Wednesday, September 28, 2011 at 8:19pm

Illustration Essay: Successful Student The value of education has really degraded in the past years; some say that college is difficult to cope with because of the stressful lifestyles, and some do not even bother trying. The truth is that college is not that difficult. There ...
Wednesday, September 28, 2011 at 8:33am

college physics
cost of homework help for college physics
Tuesday, September 27, 2011 at 10:28pm

College physics (simple)
Two blocks (one on top of the other), each of mass m = 2.4 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 6.8 N, directed to the right. The blocks move together to the right at constant velocity. (a) Find the frictional force ...
Tuesday, September 27, 2011 at 5:35pm

College physics (simple)
Two blocks (one on top of the other), each of mass m = 2.4 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 6.8 N, directed to the right. The blocks move together to the right at constant velocity. (a) Find the frictional force ...
Tuesday, September 27, 2011 at 5:35pm

college algebra
Could I please have 1 example of a piecewise-defined function problem, with 2 function pieces and the domain and range of each piece. Thank you
Tuesday, September 27, 2011 at 3:11pm

college math
please help me write the equation and solve for it. 1).in a basketball game, eric made half as many free throws as dan. if the total number of free throws made by both men was 18, how many free theows did eric make?
Tuesday, September 27, 2011 at 1:53pm

statistics
at a certain college, there were 700 science majors,100 engineering majors and 500 business majors. if one student was selected at random, the probability that they are an engineering major is?
Tuesday, September 27, 2011 at 12:15pm

Final Draft, English essay
Hey could you please check this. It is supposed to be an illustrated essay. Is it illustrated enough? _______________ Illustration essay: Successful student The value of education has really fallen in the past years; some say college is hard to cope with and some do not even ...
Tuesday, September 27, 2011 at 7:51am

College Physics
The roller coaster in Figure P6.36 starts with a velocity of 15.4 m/s. One of the riders is a small girl of mass 30 kg. Find her apparent weight when the roller coaster is at locations B and C. At these two locations, the track is circular with the radii of curvature given in ...
Monday, September 26, 2011 at 10:50pm

College Physics
A 2.0 m diameter merry-go-round is initially turning with a 4.2 s period. It slows and stops in 22.0 seconds. Before slowing, what is the speed (in m/s) of a child on the rim? How many revolutions does the merry-go-round make as it stops?
Monday, September 26, 2011 at 3:28pm

English essay final draft.
HEY I FINISHED MY FINAL DRAFT, DONE EDITING TOO. COULD YOU PLEASE CHECK IT AND TELL ME IF THIS ESSAY IS ILLUSTRATIVE ENOUGH? Illustration essay: Successful student The value of education has really fallen in the past years; some say college is hard to cope up with and some do ...
Monday, September 26, 2011 at 1:22pm

College Algebra
Let g(x) = -2x2 + bx + c be a quadratic function, defined everywhere, where b and c are constants. If x = 1 marks the location of one of the zeros of this quadratic function, and if the y-intercept of this function is at (0, 5), then use this information to name constant b.
Monday, September 26, 2011 at 9:44am

College Algebra
Let h(12) = -100 for some function h(x), defined everywhere. If the average rate of change of h(x) from x = 12 to x = 20 is 50, then find h(20).
Monday, September 26, 2011 at 9:44am

College Algebra
Let g(x) = x3 - 12x + 16. Find the location of the local minimum of this function (there is only one such location). Evaluate function g(x) at the x-value of the ordered pair location of this local minimum.
Monday, September 26, 2011 at 9:44am

English
I AM DONE WITH MY ESSAY : Could some one please read it and tell me if it is correct Illustration essay: A successful student The value of education has really fallen in the past years, some say college is hard to cope up with and some do not even bother trying. The truth is ...
Monday, September 26, 2011 at 9:16am

college Algebra
Let g(x) = -2x2 + bx + c be a quadratic function, defined everywhere, where b and c are constants. If x = 1 marks the location of one of the zeros of this quadratic function, and if the y-intercept of this function is at (0, 5), then use this information to name constant b.
Monday, September 26, 2011 at 12:38am

College Algebra :(
Sketch the graph of y=mx for the given values of m. m=3,-2,2/3,-1/4 please help me, I'm so confused!
Monday, September 26, 2011 at 12:28am

College Algebra
Let h(12) = -100 for some function h(x), defined everywhere. If the average rate of change of h(x) from x = 12 to x = 20 is 50, then find h(20). Type your numerical response in the space provided. Do not type in any of the processes which you utilized to arrive at your response.
Monday, September 26, 2011 at 12:08am

College Algebra 2
Find the equation of variation in which y varies jointly as x and z and y=8, x=4 and z=2
Sunday, September 25, 2011 at 11:39pm

College Algebra 2
The speed of train A is 16 mph slower than train B. Train A travels 190 mph in the same time it takes train B to travel 270 miles. Find the speed of each train.
Sunday, September 25, 2011 at 10:40pm

College Algebra 2
To determine the number of deer in a game preserve, a conservationist catches 810 deer, tags them and lets them loose. Later 684 deer are caught; 171 of them are tagged. How many deer are in the preserve?
Sunday, September 25, 2011 at 10:32pm

College Algebra 2
To determine the number of deer in a game preserve, a conservationist catches 810 deer, tags them and lets them loose. Later 684 deer are caught; 171 of them are caught. How many deer are in the preserve?
Sunday, September 25, 2011 at 9:57pm

College Algebra 2
The number of kilograms of water in the human body varies dirctly as the mass of the body. An 84-kg person contains 64-kg of water. How many kg of water is in a 63-kg person?
Sunday, September 25, 2011 at 9:51pm

essay
can someone critique my short college admission essay and if so how do I submit it
Sunday, September 25, 2011 at 8:58pm

College Algebra 2
4<2x-16<14
Sunday, September 25, 2011 at 7:02pm

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