Saturday

October 22, 2016
Total # Posts: 737

**Chemistry**

How many moles of K atoms are there in 152.8247 grams of KMnO4?

*May 19, 2012*

**physics- MC QUESTIONS**

Q 1: which of the following conditions occur when an object is in static equilibrium ? (can be more than one option) a. net force on the object is zero b. net torque on the object is zero c. acceleration of the object is zero d. velocity of the object is zero Q2: Student A ...

*May 9, 2012*

**AP Literature-Macbeth**

How does the banquet scene blur the clear-cut and common-sense distinction that most of us make between the real and imaginary? In what other scenes has this distinction been blurred?

*April 24, 2012*

**Math **

you have 12 blueberry muffins for $7.20 , 8 chocolatechip for $4.40, and 6 raisin for $4.50 What type of muffin cost the Least?

*April 15, 2012*

**math**

X2+11x=-24

*March 27, 2012*

**Physics**

A 0.31-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. (a) Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone–Earth system before the stone is released? (b) ...

*March 19, 2012*

**Physics**

Two blocks are connected by a light string that passes over a frictionless pulley as in the figure below. The system is released from rest while m2 is on the floor and m1 is a distance h above the floor. (a) Assuming m1 > m2, find an expression for the speed of m1 just as ...

*March 19, 2012*

**Physics**

Im still confused. Ive tried solving for k a couple of different ways and the website tells me that I am wrong. My answers have ranged from .0286 to 791.1 N/m. Ive tried converting 1.55 cm to m, and it still says that I am wrong.

*March 5, 2012*

**Physics**

Two blocks, each with a mass = 0.168 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed = 1.28 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on block 1 is compressed. Maximum compression of the ...

*March 5, 2012*

**Physics 161**

i really wanna know that why is centripetal force equal to frictional force??? n a request... free body diagram please!! please...

*February 28, 2012*

**Microeconomics**

Consider the markets for pizza and fried chicken. Show graphically and explain the impact you would expect if technological change leads to the development of a pizza oven that is both much cheaper and uses less energy than current ovens.

*February 22, 2012*

**Physics help.**

The 78.0 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 0.840 and 0.630, respectively. What is the minimum ...

*February 21, 2012*

**Physics **

At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. In calm waters, the scale reads 172 lb. During the storm, the crewman finds a maximum reading of 215 lb and a minimum reading of 131 lb. Calculate the maximum upward and ...

*February 21, 2012*

**Math**

The point L(a,b)in quadrant 1, is rotated 90 degrees about the origin and then reflected across the y-axis. What are the coordinates of the image of L?

*February 2, 2012*

**Math**

I need help with the riddle in pizzaz, "what should you say when you meet an angel?" Anyone know?

*February 2, 2012*

**12th Grade Health Class**

My butt is itchy, how can I scratch it?

*January 16, 2012*

**Math**

when 6 is increased by the number of 12 the result is 102 what is the number?

*January 15, 2012*

**Math**

40 percent of what number is 782?

*January 15, 2012*

**Psychology **

How does hindsight bias relate to a presidential election?

*January 2, 2012*

**calc- please help im so confused**

The top half of a storage tank is a circular cylinder that is 5 meters tall and has a diameter 2 meters. The bottom half of the tank is shaped like an 8-meter inverted cone (pointed down). Let h represent the depth of the tank's contents. At t = 0 minutes, a release valve ...

*January 1, 2012*

**calc- please help im so confused**

differentiation & related rates

*January 1, 2012*

**calc- please help im so confused**

The top half of a storage tank is a circular cylinder that is 5 meters tall and has a diameter 2 meters. The bottom half of the tank is shaped like an 8-meter inverted cone (pointed down). Let h represent the depth of the tank's contents. At t = 0 minutes, a release valve ...

*January 1, 2012*

**Question**

honors

*January 1, 2012*

**Social Studies**

Name all the brands of chewing gum.Also is ? a gum brand, too?

*January 1, 2012*

**social studies **

what purification progress bears Louis Pasteur's name?

*January 1, 2012*

**stuff**

well i was just knowing if it was okay

*December 29, 2011*

**stuff**

can it be also servered as lunch or breakfast

*December 29, 2011*

**stuff**

what time of day do you eat mac and cheese.suggestions here

*December 29, 2011*

**Algebra 2**

Evaluate with nth Roots. For mammals, the lung volume V ( in milliliters) can be modeled by V=170m^4/5 where m is the body mass ( in kilograms)/ Find the lung volume of each mammal. Mongoose - Body Mass(kg) = 1.14 Camel - Body Mass (kg) = 229

*December 14, 2011*

**Music**

What are the musical elements used in last goodbye by jeff buckley

*December 12, 2011*

**ALgebra**

(1) GCF= 1 (2) GCF= x^2 I'm pretty sure for the 2nd problem it's x^2 but I don't know about 1 x;

*December 7, 2011*

**algebra**

Jesus is bad

*December 6, 2011*

**Math**

What are the x-intercept of the graph of 35x^2-20=60x

*November 14, 2011*

**Math**

Can you help me check if I'm doing this correctly or not? I'm solving this quadratic equation by us ing the quadratic equation. -9v^2+35v-30=1-v -9v^2+36v-29=0 -36 ± √36^2-4(-9)(29) divided by 2(-9) -35 ± √1296 + 1044 divided by -18 -36 &...

*November 14, 2011*

**Math**

Solve the equation by factoring, by finding square roots, or by using the quadratic formula. 3(x+4)^2= -27

*November 14, 2011*

**Help- Physics**

How much work did the movers do (horizontally) pushing a 130kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50?

*November 11, 2011*

**World Geography**

What current events have gone on in Switzerland since September? I only need one and it only has to be vague.

*November 10, 2011*

**World Geography**

What websites will have information on Switerland Attractinos? I need to find 4 Attractions. A Religious, Cultural, Physical(Natural), and a Historical one.

*November 10, 2011*

**Living Environment**

Wassup

*November 8, 2011*

**ELA**

No I mean the v/cv pattern

*November 7, 2011*

**Geometry**

9d-d/5=88 c/2+11c=92 How do i solve for the variables d and c?

*November 7, 2011*

**Spanish**

ok you don't have to put A in front of everything or at least that is what i was taught as for the other words i'm not entirly sure.

*November 7, 2011*

**geometry**

the 2 triangles are congruent by the angle, angle, side theorem or aas. I am pretty positive that's the answer but you might want to double check just to make sure. Hope i could help you out :)

*November 6, 2011*

**Math-System of Equations**

1. Solve for x, y, z in the following system: 2x-3y-2=z y-x+z=1 -y-2z=7 The answers are: x=-7 y=-5 and z=-1 however I don't know how to go about this.

*November 3, 2011*

**Physics**

What is the acceleration experienced by the tip of the 1.5 cm-long sweep second hand on your wrist watch?

*October 23, 2011*

**Physics**

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.40 m. At the lowest point of its motion the tension in the rope supporting the bucket is 30.0 N. Find the speed of the bucket. How fast must the bucket move at the top of the circle so that the rope does not ...

*October 23, 2011*

**history**

Who are green party political supporter?

*October 16, 2011*

**Geometry**

Sinve b is midpoint of ac then ab and ac are the same length. So, 6x+7 = 18x-4. Hope this helps.

*October 16, 2011*

**Math**

On July 5th six different people reported to the police that they had seen Bigfoot, the large hairy creature sometimes seen but never captured. The next day, twice as many people called the police; sure they had seen the creature. Each day the police received twice as many ...

*October 2, 2011*

**statistics**

false

*September 27, 2011*

**Calc**

find F''(pi/3) f(x)= 4cos(x/2) i got -cos(pi/6) but i don't think that's the correct answer... Thanks!

*September 11, 2011*

**math**

What is the differnece in meaning between the notstions of a line over QR and not a line over QR?

*September 7, 2011*

**math**

What is the differnece in meaning between the notstions of a line over QR and not a line over QR?

*September 7, 2011*

**chemistry**

what does 9.54e-7+7.25e-4 equal?

*September 1, 2011*

**geometry**

Hdmakrhsiru

*September 1, 2011*

**Chemistry**

Estimate the value of the equilibrium constant for the dissolution of LiF(s) in a strong acid

*July 5, 2011*

**Chemistry**

To 0.360 L of 0.140 M NH3 is added 0.150 L of 0.100 M MgOH2. How many grams of (NH4)2SO4 should be present to prevent precipitation of Mg(OH)2 (s)? THANK YOU!!!

*June 23, 2011*

**Chemistry**

Find the [OH-] of .196 M NaOH and .262 M NH4Cl

*June 21, 2011*

**Chem**

So do you add the 6.6E-3 and 1E-2 together as the value for Ba^2+?

*June 21, 2011*

**Chem**

6.6×10−3 M Ba(OH)2 and 1.00×10−2 M BaCl2 what is [OH-] of solution?

*June 21, 2011*

**chemistry**

Molybdenum (Mo) has a density of 10.22 g/cm3 and it crystalizes into a fcc unit cell, calculate the radius of a (Mo) atom?

*June 7, 2011*

**world issuse**

LUGGAGE

*May 24, 2011*

**Chemistry**

the concentration of HCl, a strong acid is 0.500 M. if 20.0 ml HCl is needed to titrate 40.0 ml of NaOH, what is the concentration of NaOH I don't understand how to do this. Can I see a step by step way of how to do this please

*May 23, 2011*

**Math**

Order of operstions

*May 10, 2011*

**Math**

-6 5/6 + 2 1/3

*May 9, 2011*

**chem**

What is being oxidized in each of the following reactions? (a) Sr(s) + F2(g) SrF2(s) F2 SrF2 Sr .(b) H2(g) + I2(g) 2 HI(g) H2 HI I2 .(c) 2 Li(s) + Pb2+(aq) 2 Li+(aq) + Pb(s) Pb2+ Li+ Pb Li thanks:) can you give an explanation. I know a is Sr but I don't get why. If it ...

*May 3, 2011*

**chemistry**

what solution of sugar in water has the highest molarity?

*April 28, 2011*

**chemistry**

what is the molarity of a solution containing 23g of NaCl in 500 mL of solution? (the molecular mass of NaCl is 58.44.)

*April 28, 2011*

**chemistry**

if you have 2 mol of glucose in 4L of solution, what is the molarity of the solution?

*April 28, 2011*

**chemistry**

if you have 100 ml each of 1.0 m solutions of NaCl,KCl, and CaCl2 which solution would have the largest mass? explain..

*April 28, 2011*

**LIfe orientation**

i think many communities will encounter due to substance of abuse

*April 26, 2011*

**Accounting**

If Grant House Furnishing accepted a ten month 8% interest rate, $3000 note from one of its customers on april 1, 2008. How much interest will Grant House Furnishing accrue for the month of April?

*March 29, 2011*

**Chem**

Thanks

*March 22, 2011*

**Chem**

An ethylene glycol solution contains 20.9 g of ethylene glycol (C2H6O2) in 85.0 mL of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.) freezing point °C boiling point °C How would I set this up? thanks

*March 22, 2011*

**english**

what is the tone and diction in the poem Tableau by countee cullen

*February 17, 2011*

**Math**

In how many ways can two dice be rolled to yield a sum divisible by 3?

*February 15, 2011*

**history**

How is the New Deal a conservative defense of capitalism?

*February 15, 2011*

**history**

"Rather than a radical departure from capitalism, the New Deal was a conservative defense of capitalism." Assess the validity of this statement.

*February 14, 2011*

**history**

What is Johnson’s thesis regarding Sam, the Market Revolution, and antebellum American society in the book Sam Patch?

*January 17, 2011*

**history**

For whom and to what extent was the American West a land of opportunity from 1865 to 1890?

*January 10, 2011*

**5th grade**

Heather paid ?12.00

*December 13, 2010*

**Algebra II**

What does it mean when the domain of a function is (-‡,‡)? What about a range of,say, (2,‡)? (In case it doesn't come out right, that symbol is the infinity symbol).

*November 28, 2010*

**Chemistry**

20.2 mL of 0.234 M FeCl3 is added to 42.5 mL of 0.453 M NaOH. Iron(III) hydroxide precipitates. NaCl remains in aqueous solution. 1) What mass (in g) of Fe(OH)3 should precipitate (assuming 100% yield)? 2) How many moles of the excess reactant remain after the reaction is ...

*November 23, 2010*

**math**

if i invested $1000.00 at 5% per year for the next 20years how much will i have

*November 16, 2010*

**math**

you invest 1000$ at an annual growth intrest rate of 5%.how much money will your investment be worth in 20years?

*November 15, 2010*

**math**

Maratha paid $42.40 for her sisters birthday present. this included 6% sales tax. What was the cost of the gift before tax?

*November 14, 2010*

**math **

64.675 = 64.68

*November 14, 2010*

**math **

video games are on sale for 35% off. if a particular game regulary sells for $99.50 what is the sale price

*November 14, 2010*

**math**

find the percent of decrease from 280 to 210. round to the nearest tenth of percent if necessary

*November 14, 2010*

**math**

In a survey, 480 people or 75% said they attened a movie at least a month. how many people were surveyed? i don't get how to find the answer

*November 14, 2010*

**math**

Bob makes 5.5% commision selling eletronics. How much commission dose she make if she sells a flat-screen TV for %10,000? how would i solve this?

*November 14, 2010*

**math correct or not?**

1. 19 is what percent of 40 a. 19=n x 40;47.5% b. 40=19 x n;2.1% c. 40=19 x n;40.4% d. 19=n x 40;52.3% is it a? 2.64 is 80% of what? a.64 x n=80; 0.8 b.0.64 x n=80; 125 c.60= 0.80 x n;80 d.80=64 x n;1.3 is it c?

*November 14, 2010*

**math**

so 14.3%?

*November 14, 2010*

**math**

1/7 as a percent?

*November 14, 2010*

**math**

What is 35% of 63? a. n x 0.35 = 63;180 b. n= 35 x 0.63; 22.05 c. n= 35 x 63; 2,205 d. n= 0.35 x 63; 22.05 i thought it was b or d?

*November 14, 2010*

**math**

Two us states are not part of the contential us. What percent of the fiffty us states are included in the contential state? A.2% B 13% C.48% D 96% is it D?

*November 14, 2010*

**math**

9.9/6 = x/16 or how would i writea proportion for that?

*November 14, 2010*

**math**

i don't know its confuses me

*November 14, 2010*

**math**

At the store, 6 pencils sell for $.99. At this rate what is the cost of 16 pencils?

*November 14, 2010*