Wednesday

July 29, 2015

July 29, 2015

**College Chemistry**

Calculate activities of Ca2+ and F- and the solubility of fluorite (CaF2) in pure water at 25C without regard to possible hydrolysis. Assume that all activity coefficients are equal to one. Express the solubility of fluorite in terms of mol/L and g/L.
*Wednesday, March 13, 2013 by Ren*

**English**

1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...
*Wednesday, March 13, 2013 by Amy*

**College physics**

A toroidal solenoid has a mean radius of 8.00cm and a cross-sectional area of 4.80cm^2 and is wound uniformly with 90.0 turns. A second coil with 500 turns is wound uniformly on top of the first What is the mutual inductance of these coils?
*Wednesday, March 13, 2013 by Anonymous*

**College Physics**

A 22 μF capacitor and a 5.20 mH inductor are connected in series with an open switch. The capacitor is initially charged to 6.70 μC. What is the angular frequency of the charge oscillations in the capacitor after the switch is closed? W = _____ rad/s
*Wednesday, March 13, 2013 by Anonymous*

**calculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
*Wednesday, March 13, 2013 by bobbi33*

**English**

I split this sentence into 2 parts is the colon use correct between football and There's? I love college football: There’s nothing like the sound of a fully packed stadium.
*Wednesday, March 13, 2013 by Bernie*

**College Chemistry**

2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring 0.943 g of NO and 589 mL of O2 measured at 30.7 °C and 829 torr into a 1 L vessel. When the mixture comes to equilibrium, what ...
*Tuesday, March 12, 2013 by Peter*

**College Mathematics**

This is a repost. I posted a question 2 days ago and the response was wrong. The question was on Probability. The question was One card is selected from a deck of playing cards. Determine the probability of selecting a jack OR a club. use this rule P(A or B) = P(A) + P(B) - P(...
*Tuesday, March 12, 2013 by slomomo*

**College Mathematics**

Probability. Select one card. One card is selected from a deck of playing cards. Determine the Probability of selecting a Jack OR a club. P(AorB)= P(A) + P(B) - P(A and B)
*Tuesday, March 12, 2013 by slomomo*

**College Math**

Find the area of a triangular piece of carpet that has a 12-inch base and is 18 inches high.
*Monday, March 11, 2013 by Linda*

**valculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
*Monday, March 11, 2013 by clerkbob*

**English**

i have a hard time calculating my grade & am in college. Please tell me the grade I have so far & will have, thank you!365 points in the course is needed. Lecture exams and quizzes are worth about 60% of the total grade &90 ≤ A 80 ≤ B < 90 70 ≤ C < 80 ...
*Monday, March 11, 2013 by jessica*

**College Mathematics**

(odds) Playing Bingo:When playing bingo, 75 balls are placed in a bin and balls are selected at random. Each ball is marked with a letter and a number as indicated in the following chart: B: 1-15 I: 16-30 N:31-45 G:46-60 O:61-75. For example there are balls marked B1,B2 up to ...
*Monday, March 11, 2013 by slomomo*

**College Mathematics**

Probability: "or" and "and" problem. Select one card, one card is selected from a deck of playing cards. Determine the probability of selecting a jack or a club.
*Sunday, March 10, 2013 by slomomo*

**college general chemistry**

3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq) how do I find the molar mass of precipitate.X hydrate
*Sunday, March 10, 2013 by Amber*

**stats**

The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months. x 0 1 2 3 4 5 P (X=x) 0.20 0.25 0.20 0.15 0.10 0.10 Find P( X > 1)
*Sunday, March 10, 2013 by cate*

**College Algebra**

Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions. 2x2 = -2 -5 Thank you
*Saturday, March 9, 2013 by Sally*

**college physics**

small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the spark plug. A permanent magnet is attached to the flywheel, and a stationary coil is mounted adjacent to it. Explain how this device is able to generate current. What ha[[ens ...
*Friday, March 8, 2013 by Anonymous*

**college algebra**

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 2,500 + 400 ln a (a ¡Ý 1) How many units are sold after spending $1,000? (Round your ...
*Friday, March 8, 2013 by Tichie*

**homework**

A trigangular region of a community college parking lot was measured. The measure of the first angle of this triangle is doubled the measure of the second angle. The measure of the third angle is 89 degree greater than double the measure of the first angle. what is the ...
*Friday, March 8, 2013 by Tameka Graves*

**college physics**

A long, straight, cylindrical wire of radius R carries a current uniformly distributed over its cross section. 1. At what location is the magnetic field produced by this current equal to quarter of its largest value? Consider points inside the wire. 2.At what location is the ...
*Thursday, March 7, 2013 by Anonymous*

**College Mathematics**

write the statement in symbolic form. Let p: the temperature is 90 degrees Let q: The air conditioner is working r: the apartment is hot. If the apartment is hot and the air conditioning is working, then the tempurature is 90 degrees.
*Wednesday, March 6, 2013 by Lisa*

**MONGU COLLEGE **

A 1200 ohms resistance of AC 0.07H inductance coil and a 0.001mF capacitor are in series across a 120V source determine. a.frequency. b.current. c.impedance.
*Tuesday, March 5, 2013 by barotseland network *

**MONGU COLLEGE **

A resistor of 15 ohms and an inductor of 4H and capacitor of 25 micro F are connected in series across 230V AC supply calculate. a.The frequency b.current c.voltage drop or pd across inductance.
*Tuesday, March 5, 2013 by barotseland network *

**Math College**

Solve the Matrix 12 -3 8 01 2 4 00 1 2
*Tuesday, March 5, 2013 by Anonymous*

**College math**

if f(x) =x+3/7 and g(x) =4+5x find (gof) (x)
*Tuesday, March 5, 2013 by Anonymous*

**College Math**

10a+ 10c + s = 180 5a + 3c + 2s = 500 a = 10c
*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c
*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c
*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c
*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c
*Tuesday, March 5, 2013 by Anonymous*

**college math**

ticket for a concert cost $5.00 for adults, $3.00 for children and $2.00 for senior citizens. Revenue was $500.00 for 180 tickets. 10 times more adults than children attended. How many senior tickets were sold?
*Tuesday, March 5, 2013 by Anonymous*

**College Mathematics**

write the statement in symbolic form. Let p: The Temperatue is 90 degrees Let q: The air conditioner is working Let r: If the apartment is hot and the air conditioner is working, then the temperature is 90 degrees.
*Tuesday, March 5, 2013 by Lisa*

**College Mathematics**

write the statement in symbolic form. Let p: The Temperatue is 90 degrees Let q: The air conditioner is working Let r: If the apartment is hot and the air conditioner is working, then the temperature is 90 degrees.
*Tuesday, March 5, 2013 by Lisa*

**Reading**

Not sure which answers to use.. please help: choose from these words: deficit, dissent,lucrative and agnostic.. 1& 2: My uncle decided to splurge and _____ with a country club because golf is his favorite_________.(Dissent & lucrative) 3 & 4 : Because my father_______s to make...
*Tuesday, March 5, 2013 by sam *

**College Mathematics**

Construct a truth table for the statement (p<--->q)--->p
*Tuesday, March 5, 2013 by Lisa*

**algebra**

Andrew has a four-year college loan for $20,000. The lender charges a simple interest rate of 5 percent. How much interest will he have to pay? simple interest = P × r × t
*Monday, March 4, 2013 by Anonymous*

**college chemistry**

if my sublimation apparatus imploded, what was the cause of it?
*Monday, March 4, 2013 by Anonymous*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...
*Monday, March 4, 2013 by Anonymous PLEASE HELP!*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...
*Monday, March 4, 2013 by Anonymous PLEASE HELP!*

**college algebra**

given the following polynomial find the zero and multiply of each were the graph touches the x axis number of turning points fx =(x-4)(x^2-25)
*Monday, March 4, 2013 by zachary*

** college algebra**

Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function. y= -x^2+2x+8
*Monday, March 4, 2013 by zachary*

**Stat**

1. For the following scores, X Y 1 6 4 1 1 4 1 3 3 1 Sketch a scatter plot and estimate the value of the Pearson correlation. b. Compute the Pearson correlation 2. For the following set of scores, X Y 6 4 3 1 5 0 6 7 4 2 6 4 a. Compute the Pearson correlation. b. Add 2 points ...
*Monday, March 4, 2013 by Cole Brown*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...
*Sunday, March 3, 2013 by Anonymous please help :) *

**statistics**

In order to plan for parking and transportation needs at a college, administrators asked students how they got to school. Some came by bus, some came by car and the others used “personal “ transportation – bikes, skateboards, or walked. The following table ...
*Sunday, March 3, 2013 by Sue*

**College physics**

Open Question: Find the electric field between the plates of a capacitor given the following:? (1) C= 10pF (2) the capacitor is connected to a 25 V battery (3) there is a vacuum between the capacitor plates (4) plate separation is 2 mm
*Sunday, March 3, 2013 by Julie*

**College physics**

Open Question: Two equal point charges of 5 µC are on the horizontal axis. One charge is at -10 cm, the other is at +10 cm.? These two charges don't move, they are STUCK, take the potential to be zero at infinity. Find the potential at the following coordinates: (0,0...
*Sunday, March 3, 2013 by Julie*

**College Physics**

A proton is put on the positive Y axis a large distance (100km) from the origin. What is the minimum speed required in the - Y direction so the proton will just reach the point (0,20) cm?
*Sunday, March 3, 2013 by Marcus*

**MONGU COLLEGE **

During an experiment conducted on the effort E to lift a load W when using a simple the following values were recorded. ………………
3;………………………………………&#...
*Thursday, February 28, 2013 by barotseland network *

**MONGU COLLEGE **

During an experiment conducted on the effort E to lift a load W when using a simple the following values were recorded. ………………
3;………………………………………&#...
*Thursday, February 28, 2013 by barotseland network *

**MONGU COLLEGE**

Uksis m16 ussr adfd ssa f2b
*Thursday, February 28, 2013 by Frank umpierre*

**MONGU COLLEGE **

In a single swing pendulum moves through an angle of 1.92 Radian. (a). Determine the length of arc treated by the pendulum Bob. (b). The area of the sector if the length of the pendulum is 13.2cm.
*Thursday, February 28, 2013 by barotseland network *

**MONGU COLLEGE **

In a single swing pendulum moves through an angle of 1.92 Radian. (a). Determine the length of arc treated by the pendulum Bob. (b). The area of the sector if the length of the pendulum is 13.2cm.
*Thursday, February 28, 2013 by barotseland network *

**general chemistry College**

Which of the following mixture would be most likely to produce carbon dioxide? Explain Why? a. magnesium and nitric acid: Mg+ HNO3 b. sodium carbonate and sufuricacid: Na2CO3+H2SO4 c. H2O+ Cu
*Wednesday, February 27, 2013 by Donna*

**general chemistry College**

Which of the following mixture would be most likely to produce carbon dioxide? Explain Why? a. magnesium and nitric acid: Mg+ HNO3 b. sodium carbonate and sufuricacid: Na2CO3+H2SO4 c. H2O+ Cu
*Wednesday, February 27, 2013 by Donn*

**college algebra**

I need to graph y=2f(x+2)-3 and then graph f(-x) Where do I start?
*Wednesday, February 27, 2013 by Anonymous*

**college algebra**

I need to graph y=2f(x+2)-3 and then graph f(-x) Where do I start?
*Wednesday, February 27, 2013 by Anonymous*

**college algebra**

Transformation f ty transform graph y=x^2 or y=|x| graph for f by hand f(x)=2|x-6|-4
*Wednesday, February 27, 2013 by Anonymous*

**MATHS MONGU COLLEGE **

A cylinder whose volume is 386,000m3 has it's length 1.3 times its diameter. calculate the diameter of the cylinder given that the volume V = 3.142r2h.
*Wednesday, February 27, 2013 by barotseland network *

**MATHS MONGU COLLEGE **

Express (a) 50 km/hour mm/s. (b) 60 litres in m3 cube if 1 litre = 0.001m3.
*Wednesday, February 27, 2013 by BAROTSELAND NETWORK *

**MATHS COLLEGE. MONGU **

one to increased costs the labour charge of a certain establishment from $1.20 to $1.40 per hour .what is the percentage increase.
*Wednesday, February 27, 2013 by BAROTSELAND NETWORK *

**College Algebra**

Alfred has just developed a new super ball and you have been asked to test its rebound capabilities. From your experiment you have found if you drop the ball from a height of 250 centimeters the first bounce average is 180 cm. rebound ratio = ? Using this rebound ratio, ...
*Wednesday, February 27, 2013 by Leigh*

**college algebra**

Some bank robbers leave town, speeding at 70mph. Ten minutes
*Wednesday, February 27, 2013 by Anonymous*

**economics**

šPlease explain these question in words! š How will demand and supply curve shift? 1. Labor market for math and science teachers when wages available in private industries utilizing these skills rise. 2. Labor market for university professors when college...
*Wednesday, February 27, 2013 by chocolatemilk*

**college chemistry**

during a liquid-liquid extraction the procedure often calls for the use of saturated NaCl when ether is used as the extraction solvent, but not when dichloromethane is used. why?
*Tuesday, February 26, 2013 by Anonymous*

**College Algebra**

Develop a tree diagram for tossing two, eight-sided gaming dice to figure out how many possibilities there are. Discuss the purpose of using such a visual in working out probability.
*Tuesday, February 26, 2013 by Stacy*

**College Algebra**

Provide one example to show how you can use the Expected Value computation to assess the fairness of a situation (probability experiment). Provide the detailed steps and calculations.
*Tuesday, February 26, 2013 by Stacy*

**MONGU COLLEGE**

find the line perpendicular and passes through (0,0) 5x-2y =10
*Tuesday, February 26, 2013 by barotseland network*

**MONGU COLLEGE**

1.Determine the sum of infinity of the series 4,2,1
*Tuesday, February 26, 2013 by barotseland network*

**college physics**

You are in the lab with a 10 V battery. You have a 10 W light bulb and you want to put 0.75 A of current through the light bulb and 7.5 V across the light bulb. This will allow the light bulb to have a brightness proportional to 5.625 W. Assuming any resistors that you need, ...
*Tuesday, February 26, 2013 by michelle*

**College physics**

According to test performed by the manufactures, an automobile with an initial speed of 75 km/h has a stopping distance of 25 m on a level road. assuming that no skidding occurs during breaking, what is the value of μ , between the wheels and the road required to achieve ...
*Tuesday, February 26, 2013 by Sneakatone*

**help college algebra**

given the following piecewise function f(x) = -x+1 for x<0 -1 for 0<x<3 -2x for x>3 find the domain find the range find the intercept d) is f continuous on it domain if not sate where f is dicontinous
*Tuesday, February 26, 2013 by zachary*

**college algebra**

given the function fx=x^3+x a) find the rate of change between the two stated values for x: 1 to 2 B)find the equation of a secant line containing the given points (1,f(1))and (2,f(2)
*Tuesday, February 26, 2013 by zachary*

**college algebra**

Transformation of ty then transformations of the graphs y=x^2or y=|x| to sketch a graph of f by hand. f(x)=2|x-6|-4
*Monday, February 25, 2013 by Anonymous*

**College Algebra help please**

I dont understand this. The question is use the remainder theorem to evaluate P(x) as given. 1. P(x)=3x^3+11x^2+2x-16 and it gives me P(1/3)
*Monday, February 25, 2013 by Kristen*

**college algebra**

please help me solve this equation x-1/3x-1/2x-5=0
*Monday, February 25, 2013 by ray*

**math**

Sonja needs to borrow $2,251 to pay for her college classes. Sallie Mae is offering her a 4.5% simple interest loan with an interest charge of $405.18 over the life of the loan. How many years is Sallie Mae giving her to pay back the loan with interest?
*Monday, February 25, 2013 by kelly*

**finance**

You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted to medical school is about 6 percent. If you are accepted to medical school, then your starting salary when you graduate will ...
*Monday, February 25, 2013 by elh009*

**Staistcs**

Problem 4 Refer again to the distribution table in Problem 3. : 3.0 points Each part is worth 1 point. a) In the United States, high school diplomas are awarded after 12 years of schooling. Which interval contains the adults who had completed 12 years of school and did not ...
*Monday, February 25, 2013 by A*

**college physics**

A 4m long copper wire has a diameter of 2mm and carries a current of 10A. Determine the ff: a. current density in the wire b. electric field c. potential difference between the ends of the wire d. resistance of the wire
*Monday, February 25, 2013 by Zell*

**college algebra**

If a rocket is propelled upward from ground level, its height in meters after t seconds is given by h=-9.8t^2+88.2t. During what interval of time will the rocket be higher than137.2m? Do I set it up like this? -9.8(1)^2+88.2(1)+137.2 = 215.6 Then h=b/2a=9.8/215.6=22m 137.2+22=...
*Monday, February 25, 2013 by Anonymous*

**college general chemistry**

calculate the lowest whole number ratio of Moles of Mg/moles of O average of Moles of Mg/Moles of O Trial 1 mass of empty crucible and lid= 36.560 mass of Mg=0.348 mass of crucible, lid, and product=38.229 Trail 2 mass of empty crucible and lid=32.221 mass of Mg=0.340 mass of ...
*Monday, February 25, 2013 by Amber*

**college general chemistry**

calculate the lowest whole number ratio of Moles of Mg/moles of O mass of empty crucible and lid= 36.560 mass of Mg=0.348 mass of crucible, lid, and product=38.229
*Monday, February 25, 2013 by Amber*

**Math Helppp**

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...
*Sunday, February 24, 2013 by Taylor*

**Pacific Union College**

Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.5 g of biphenyl in 28.8 g of benzene?
*Sunday, February 24, 2013 by Nick*

**college chemistry**

Why is it that sodium chloride or acetic acid can't bee steam distilled??
*Sunday, February 24, 2013 by Anonymous*

**College Physics PLEASE HELP**

A cylindrically shaped piece of collagen is being stretched by a force that increases from 0 to 3.0 x 10^-2 N. The length and radius of the collagen are 2.5 and 0.091 cm. Young's Modulus is 3.1 x 10^6 N/m^2. a.) If the stretching obeys Hooke's Law, what is the spring ...
*Saturday, February 23, 2013 by Lori*

**College Physics PLEASE HELP**

A spring stretches 0.150 m when a 0.30 kg mass is hung from it. The spring is then stretched an additional 0.100 m from this equilibrium point and released. Determine a). the spring constant, k, b). the maximum velocity of the mass, c. ) the maximum acceleration of the mass, d...
*Saturday, February 23, 2013 by Lori*

**College Algebra**

need help finding the distance using the distance formula please!!! (0,0) (x,y)
*Saturday, February 23, 2013 by Marie*

**Math Helpppp**

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...
*Saturday, February 23, 2013 by Katy*

**college algebra**

now i understand both intersection and union but not with an infinity. how do i figure this out (-infinity,4)n(0,infinity)
*Saturday, February 23, 2013 by Marie*

**Science**

What did Oprah Winfrey do for 152 exceptional girls in South Africa? Select one: a. She gave each of them college scholarships. b. She helped them attend school in the United States. c. She invited them to attend her new school. d. She convinced them to leave South Africa. ...
*Saturday, February 23, 2013 by paragonnova*

**College Math**

Could someone please explain the union to me. I dont understand. I get the intersection ones but not union. HElp me? Ecample: (-1,1)U[0,6]
*Saturday, February 23, 2013 by Marie*

**College Algebra**

Hello, I have been trying to do my math homework for a few hours now and can not figure out how to find the indicated intersection or union in interval notation. Example: (-1,5)n[0,8) Please help me!!
*Saturday, February 23, 2013 by Marie*

**College math **

Can someone please assist me The problem reads "use the rule of 78 to find the payoff amount for the loan paid in full before the date" Finance charge: $717 Total number of payments 41 Amount per payment $155 Remaining payments when paid in full 10 Please help. ...
*Friday, February 22, 2013 by Meg*

**college algebra 1111**

solve. 2z^2-7=-48
*Friday, February 22, 2013 by Brandi*

**science**

The mean weight of 500 male students at a certain college is 151 pounds (lb), and the standard deviation is 15 lb. Assuming that the weights are normally distributed, find the probability of students weight (a) between 121 and 155 lb (b) more than 185 lb. c) if 4% of the ...
*Friday, February 22, 2013 by suhad*

**college algebra**

driving along a crowded freeway you notice that it takes a time to go from one mile marker to the next. when you increase your speed by 8.4 mi/hr the time to go one mile decreased by 14 seconds. What was your original speed?
*Thursday, February 21, 2013 by katie*

**College Physics **

Find the magnitude of the magnetic flux through the floor of a house that measures 21m by 13m . Assume that the Earth's magnetic field at the location of the house has a horizontal component of 2.4×10−5 T pointing north, and a downward vertical component of 4.3...
*Thursday, February 21, 2013 by Cristina*

**college chemistry**

how to make a 1:8 dilution of chemical Y. You have 350 mililiters of chemical Y. how much diluent do you need?
*Thursday, February 21, 2013 by chuck*