Friday

October 9, 2015
Total # Posts: 1,668

**Algebra**

i got 0.09090909
*October 7, 2015*

**Algebra**

So finding the decimal equivalents you multiply 1 divided by 9
*October 7, 2015*

**Algebra**

What is it?
*October 7, 2015*

**Algebra**

Which rational number equals 0 point 1 with bar over 1? 1 over 11 1 over 10 1 over 9 1 over 8
*October 7, 2015*

**Middle School Math**

The marching band is selling cases of fruit for $13 per case. a. Write an algebraic expression for the cost of f cases of fruit. b. Evaluate the expression for 250 cases. Question 17 options:
*October 7, 2015*

**Chemistry**

I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting product was ...
*September 29, 2015*

**Chemistry**

Calculate the number of moles of carbon atoms present in 1.1 g of ethanol (C2H6O). Answer in units of mol.
*September 16, 2015*

**Chemisrty**

What is the weight of 6.14×10^21atoms of phosphorus?Answer in units of g.
*September 16, 2015*

**Chemistry**

How many atoms of mercury are present in 3.2 cubic centimeters of liquid mercury? The density of mercury is 13.55 g/cc. Answer in units of atoms.
*September 16, 2015*

**Chemistry**

An analysis of nicotine (MW = 162 g/mol) gives 74.0% carbon, 8.65% hydrogen, and 17.3% nitrogen. What is the TRUE (MOLECULAR) formula for nicotine? All I need are the formulas!!
*September 16, 2015*

**science**

What is an example of physical science? I know it is movement but can you give an example in a sentance and explain please?
*September 15, 2015*

**science**

It will be A
*September 15, 2015*

**Physics**

You throw a ball with a mass of 160 g into the air with an initial speed of 19.8 m/s. How high does the ball rise?
*September 13, 2015*

**Physics**

A brick is dropped out of a window. It hits the ground 3.64 seconds later. How high is the window?
*September 13, 2015*

**Chem **

What is the balanced net ionic equation for copper(2)chloride and potassium carbonate ?
*September 8, 2015*

**Chemistry HELP**

What is the velocity of an electron that has a de broglie wavelength approximately the length of a chemical bond? Assume this length to be 1.2 X10^-10 m.
*September 5, 2015*

**Chemistry**

would the formula look like this? v=(6.626x10^-340/9.11X10^-31x1.85x^7 would the answer then be 2.0X^-10
*September 5, 2015*

**Math**

Pencils come in packages of 10 each. Packages are packed 20 to a box, and boxes are packed 500 to a carton. How many pencils are in a carton?
*August 30, 2015*

**math**

a 12 cm by 16 cm picture is mounted with border of uniform width on a rectangular frame. if the total area of the border is 288 cm2, what is the length of the side of the frame?
*July 21, 2015*

**Science**

if 0.75 mole of helium gas occupies a volume of 1.5. what volume will 1.2 mole helium occupy at the same teperature and pressure?
*June 28, 2015*

**math**

How many terms are there In an arithmetic Sequence with a common different of 4 and with the first and last term 3 and 59 Respectively.
*June 19, 2015*

**chemistry**

Why does acetone evapourate faster than water in terms of intermolecular forces
*May 25, 2015*

**chemistry**

why does water,oil,acetone and isopropanol have the same concave meniscus shape?
*May 25, 2015*

**English PLZ HELP**

Which of the following are examples of coordinate headings? A. 3, b, iii B. A, i, a C. ii, 2, B D. A, B, C My answer was C but i got it wrong, im torn between A and B? PLEASE HELP CANT FIND IT IN MY TEXT BOOK
*May 22, 2015*

**English, Written Communication**

Which of the following are examples of coordinate headings? A. 3, b, iii B. A, i, a C. ii, 2, B D. A, B, C My answer was C but i got it wrong, is it A? PLEASE HELP CANT FIND IT IN MY TEXT BOOK
*May 22, 2015*

**geometry**

I have two circles that are congruent to each other one has a lenght of 8ft and the second is half of 8ft. What is the length of the second circle
*May 13, 2015*

**chemistry**

Why does a titrated sample that is fuschia with phenolphthalein turn colorless when the solution is blown into? HINT: Use chemistry and properly balanced chemical equations to support your statement.
*May 13, 2015*

**chemistry**

A compound is 52.17 % C, 13.04 % H and 34.78 % O. What is its empirical formula?
*May 13, 2015*

**chem**

What is the hybridization of the Fe(C2O4)33- complex?
*May 13, 2015*

**chem**

Substances with paired orbital electrons are considered:
*May 12, 2015*

**chem**

Is the Fe(C2O4)33- ion an inner or outer orbital complex?
*May 12, 2015*

**chem**

yes I think so I just am having trouble with chemistry this is hard
*May 12, 2015*

**chem**

Which reagent oxidizes the ferrous oxalate dehydrate?
*May 12, 2015*

**chemistry**

Balance the following reactions using the non-traditional method of balancing redox Nickel(II) hydroxide + oxygen = Nickel(III) hydroxide Copper(I) hydroxide + oxygen = Copper(II) hydroxide
*May 8, 2015*

**math**

I have a question on my math that my teacher cant help me with because this one is for try it. Can you help me see if it is right?: It says: 12 . Wich is equal to 30 hundreths? A)3 thousandths B)3tenths C)3 tens D)3thousands I think the answer is B but, it really confuses me ...
*May 7, 2015*

**math**

Rich has 3 pieces of pizza. Each pizza end forms a 20° angle. If all of the pieces were placed together what would the size of the angle be?
*May 7, 2015*

**chemistry**

20 g NaOH are dissolved in 1 L H2O. What is the N of the NaOH solution
*May 6, 2015*

**chemistry 121 **

If a solution of 0.5 M HOAc dissociates as follows: HOAc + H2O „® H3O+ + OAc-, what is the final [H3O+] in the solution? Ka for HOAc = 1.8„ª10-5. What is the pH of the above solution? What is the Kb for HOAc? not sure of the initial set up please help
*May 5, 2015*

**Optimization Calculus**

A three sided fence is to be built next to a straight section of river, which forms the fourth side of a rectangular region. There is 96 ft of fencing available. Find the maximum enclosed area and the dimensions of the corresponding enclosure. I drew a picture of it and I got ...
*May 2, 2015*

**Chemistry**

A 1X Phosphate Buffered Saline solution was prepared by adding 1.44g of Na2HPO4 and 1.44g of H2PO4- to 800mL of water. Additional components were dissolved in the solution: 8g of NaCl, 0.2g of KCl and 0.24g KH2PO4. The resulting buffer solution had a pH of 7.2. a. Calculate ...
*April 28, 2015*

**Calculus **

A road perpendicular to a highway leads to a farmhouse located 6 mile away. An automobile traveling on the highway passes through this intersection at a speed of 55mph. How fast is the distance between the automobile and the farmhouse increasing when the automobile is 2 miles ...
*April 10, 2015*

**Chem II**

Nevermind. I figured out what I needed to do. Thank you anyway!! =)
*April 7, 2015*

**Chem II**

The conversion of glucose into lactic acid drives the phosphorylation of 2 moles of ADP to ATP and has a standard free energy of -135 kJ/mol. C6H12O6 + 2 HPO4 + 2 ADP + 2 H+ --> 2CH3CH(OH)COOH + 2 ATP + 2H20 What is the standard free energy for the conversion of glucose ...
*April 7, 2015*

**chemistry**

n2+3I2>2NI3 if you have 28g of N2how many grams of NI3 will you be able to make?
*March 30, 2015*

**math**

I need to do the work on how I got the answer
*March 29, 2015*

**math**

how did you come up with the answer
*March 29, 2015*

**math**

I don't understand
*March 29, 2015*

**math**

Ruth's brother just went away to college this fall and had to buy his own laundry soap and fabric softener.The laundry soap was twice the cost of the fabric softener. the total of the two items was $7.47. how much did the laundry soap and the fabric softener cost ...
*March 29, 2015*

**chemistry**

A particular weak acid (HA) with a Ka of 2.0e-5 is 75% titrated with a strong base to produce a buffer solution. What is the pH of this final solution? Show all work.
*March 24, 2015*

**Math**

a cone and a hemisphere share the base that is a semicirclee with radius 3 and the cone is inscribed inside the hemisphere. find the volume of the region inside the hemisphere
*March 18, 2015*

**Math**

Solve the simultaneous equation 1/p minus 1/q = 3/2 1/p plus 1/q = 4
*March 18, 2015*

**Quote Analyzation**

"I backed away from him until I was atop the forecastle deck. The line of the crew had split, some to either side. 'Help me!' I appealed to them again. But though they were deaf to Captain Jaggery, they were equally deaf to me. The captain, in careful pursuit, now...
*March 17, 2015*

**Reading Comprehension**

"The steady wash of the waves, the bobbing and swaying of the ship, the creak and groan of timbers, all told me the Seahawk was plowing toward home...Nervously,I glanced over my shoulder through the steerage cabin...I had neglected to consider something about the voices I...
*March 16, 2015*

**Elementary Statistics**

Oops, never mind. I understand what I was doing wrong. Thank you :)
*March 10, 2015*

**Elementary Statistics**

My confusion isn't with the idea of IQ scores, I'm having trouble calculating the z-score when the number given is less than the mean. My answer doesn't make logical sense like it would if the x number was higher than the mean. If you could walk me through that I ...
*March 10, 2015*

**Elementary Statistics **

"Scores on the Wechsler IQ test approximate a normal curve with a mean of 100 and a standard deviation of 15. b. What percentage of IQ scores are below 74?" I've been working at this for a while now, but when I solve for the z-score, I keep getting a negative ...
*March 10, 2015*

**English (Novel)**

In chapter 18 of The True Confessions of Charlotte Doyle, how is the crew beguiled (tricked) into believing Captain Jaggery's testimony over Charlotte's?
*March 10, 2015*

**novel**

"Though I tried to keep my head up, my eyes steady, it was not easy. They looked at me as if I were some loathsome thing. At the same time, the more objections they made, the more determined a I was to prove myself." What might this quote from chapter 13 of The True ...
*March 6, 2015*

**Novel**

In chapter 13 of The True Confessions of Charlotte Doyle, why are the sailors hesitant about Charlotte taking Mr. Johnson's place on the crew?
*March 4, 2015*

**Novel**

In chapter 10 of The True Confessions of Charlotte Doyle, why does Cranick suggest that Captain Jaggery have Charlotte defend him?
*March 2, 2015*

**Novel **

In chapter 9 of The True Confessions of Charlotte Doyle, what does Charlotte try to work out in her head? What conclusion does she draw?
*March 2, 2015*

**Novel**

In chapter 9 of The True Confessions of Charlotte Doyle, Charlotte goes to the forecastle for the first time since she has been aboard the Seahawk to get a needle for Ewing. What might this suggest about her character? Of what literary device is this an example?
*March 2, 2015*

**books**

In chapter 9 of The True Confessions of Charlotte Doyle, where does Charlotte go for the first time since she has been aboard the Seahawk? For what does she go there? What might this suggest about her character? Of what literary device is this example?
*March 2, 2015*

**Math!! Help ASAP**

Calculate the slant height for the given cone. Round to the nearest tenth. Diameter=18 cm. Height=7 cm. A.11.2 B.12.5 C.14.8 D.11.4 ******** Correct?!?!
*February 26, 2015*

**Organic Chemistry**

I believe that it is eclipsed
*February 25, 2015*

**Social studies**

Do you have a book for this?
*February 25, 2015*

**math**

I think it does say how many in each group that Mary answered correctly by the way it words it but its hard to tell.
*February 25, 2015*

**math**

im not sure but i believe the answer is 76
*February 25, 2015*

**Physics**

Calculate the size of the gravitational pull of a sphere of mass 10kg on a mass 2.0kg when their centres are 0.2m apart. What is the force of the 2.0kg mass on the 10kg mass?
*February 25, 2015*

**Physics**

Calculate the weight of an astronaut whose mass (including spacesuit)is 72kg on the surface of the moon? What is the astronauts weight on Earth? Comment on the difference
*February 25, 2015*

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100cm and a return swing of 99cm. On which swing will ...
*February 23, 2015*

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100cm and a return swing of 99cm. a.)On which swing ...
*February 19, 2015*

**Algebra 2**

A diamond is purchased for $3500. Its value increases 5% each year. Find the value of the diamond at the end of the sixth year of ownership. Please explain
*February 19, 2015*

**Algebra 2**

A large asteroid crashed into a moon of a planet, causing several boulders from the moon to be propelled into space toward the planet. Astronomers were able to measure the speed of one of the projectiles. the distance (in feet) that the projectile traveled each second, ...
*February 18, 2015*

**Algebra 2**

What is the sum of the multiples of 4 from 16 to 100?
*February 18, 2015*

**physics**

a student wants to determine the coefficient of static friction and kinetic friction between a box and a plank by gradually raising one end of the plank. when the angle of inclination with the horizontal reaches 28.0, the box starts to slip and slide 2.53 m down the plank in 3...
*February 16, 2015*

**Algebra 2**

It takes You, riding a motorcycle, 2 hours less time to travel 60 miles than it takes Marley to travel 50 miles riding a horse. You travel 10 miles per hour faster than Marley on a horse. Find yours and Marley’s times and rates of travel. Hint: Set up a chart using d= rt
*February 13, 2015*

**science**

Two sleds collide and stick together sled a has mass of 140kg and a speed of 17m/s sled b has a mass of 80kg and a speed of 24m/s. There is no friction between the sleds and snow. Will the sleds be motionless after the collision or which one will move the other
*February 11, 2015*

**Algebra**

The Roice family have a rectangular swimming pool. It measures 16' x 32'. This summer they are installing a sidewalk around the pool. The width of the sidewalk is yet to be determined, 1) Using the x as the width of the sidewalk, write a Polynomial to represent the ...
*February 10, 2015*

**College Physics**

What is the centripetal force acting on an object with a mass of 20 kg moving at a velocity of 10 m/s in a circle with a diameter of 5 m? When the object is moving with circular motion, are the forces balanced on the object? Why or why not?
*February 6, 2015*

**College Physics**

A rope can withstand a maximum tension force of 500N before breaking. If we use the rope to pull a 24 kg bucket of water from a well, what is the maximum acceleration upward we can use without breaking the rope?
*February 6, 2015*

**College Physics**

A 750 kg rocket accelerates straight upward from the ground at 60 m/s2. What is the force (thrust) provided by the engine?
*February 6, 2015*

**College Physics**

Human nerve impulses travel at about 10 m/s. Estimate the minimum reaction time from the moment you perceive an obstacle in front of your car and the moment that your foot receives the command to press on the brakes. Consider your height as 1.73m. If the car is traveling at ...
*February 6, 2015*

**College Physics**

Find (a) the magnitude and (b) the direction of the net force on an object given that the following forces act on the object at the same time: 10N east, 20N down, 20N west, 30N down, and 20N up.
*February 6, 2015*

**College Algebra and Trigonometry**

if x = ucos(pi/4) - vsin(pi/4) and y = usin(pi/4) + vcos(pi/4), find A, B and C so that, 5x^2 - 6xy + 5y^2 = Au^2 + Buv + Cv^2. Thanks, I really dont know what to do, I've already used almost 20 sheets of paper. Please help me. Thanks.
*January 25, 2015*

**english**

In "Why, You Reckon?" what argument does the other man use to convince the narrator to team up with him? What lesson do you think the narrator learned by the end of the evening? I have part of the answer but I don't now how to put it in ACE format.
*January 23, 2015*

**physics**

Pulling Force= 131cos27 Friction Force= 0.125(18x9.8-131sin27) Pulling Force-Friction Force= 18a (solve for a) Vf^2=Vi^2+2ad (solve for Vf)
*January 19, 2015*

**chemistry**

A sample of oxygen at 24.0 degrees celcius and 99.3 kpa was found to have a volume of 455 ml. How many grams of O2 were in the sample?
*January 13, 2015*

**LAC1**

Identify the principal part of the underlined verb. Lucia got the majority of the votes. (Points : 1) present present participle past past participle (Got is underlined) My Answer: Present
*January 8, 2015*

**english**

is this supposed to be like from a story ... or?
*January 8, 2015*

**LAC1**

Identify the underlined word in the sentence. Write either D for direct object or I for indirect object. Get that dog and those puppies out of here! (puppies is underlined) My Answer Is: Indirect Object
*January 7, 2015*

**math**

there was 112 seats in the school auditorium.there are 7 rows of seats in each row. there are 70 people seated, filling up full rows of seats. how many seats are empty?
*January 6, 2015*

**math**

14 loins to 10 tigers
*January 6, 2015*

**English**

Which of the following statements best describes the purpose of the motif of falling leaves in Gerard Manley Hopkins poem "Spring and Fall"? The motif helps readers understand the innocence of youth The motif reminds readers of the beauty of autumn x the motif ...
*December 23, 2014*

**Literary Analysis**

So , number 1 is wrong right ?
*December 23, 2014*

**Literary Analysis**

In works like "To Build a Fire", Naturalist writers such as Jack London advocated x trusting in the wisdom of the natural world Respect for the power and wildness of the natural world Remaining always within the protective boundaries of civilization Celebrating the ...
*December 23, 2014*

**math**

john recieves a 2.5% real estate commission when he sells a home for his client?how much will the client receive from the sale of their 346.000 home
*December 5, 2014*

**science**

can we predict when a hurricane will occur? explain. I have tried so man website and still no answer.. please help
*December 1, 2014*

**science**

thanks
*December 1, 2014*