Monday

May 30, 2016
Total # Posts: 3,349

**Introductory Chemistry**

Calcium chloride is 36.11% calcium by mass. How many grams of calcium are in 40.0 grams of calcium chloride
*October 15, 2014*

**physics**

A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 13.6 m/s at an angle of 43.1° above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...
*October 11, 2014*

**physics**

A meteoroid is speeding through the atmosphere, traveling east at 15.5 km/s while descending at a rate of 10.6 km/s. What is its speed, in km/s?
*October 11, 2014*

**Organic Chemistry**

If your carboxylic acid is benzoic acid, how many moles of benzoic acid are present in your sample (0.30g, and it is a mixture of three components of equal mass)?
*October 8, 2014*

**Spanish **

Write four different questions for the following sentences 1. Mariana canta en el coro (choir) de la universidad 2. Carlos busca el libro de arte 3. La profesora Gutierrez ensena contabilidad 4.Ustedes necesitan hablar con el profesor de economia
*October 4, 2014*

**english**

What does the term RACE mean in trying to do language homework?
*October 3, 2014*

**math**

BVFGTVSCJKEN M, BNSVBDFJB JKDGVKJ
*October 1, 2014*

**Chemistry**

Al and Fe react with HCl to produce a chloride salt and hydrogen gas. A .1924g sample of a mixture of Al and Fe is treated with excess HCl solution. A volume of 159mL h2 gas is collected over water at 19C and 841 torr. What is the mass percent by mass of Fe in the mixture? The...
*September 29, 2014*

**Chemistry**

A .7178 g sample of a hydrocarbon occupies a volume of 390.7 mL at 65C and 99.2kpa. When the sample is burned in excess oxygen, 2.4267 g CO2 and .4967g H2O are obtained. What is the molecular formula of the hydrocarbon? Write a plausible structural formula for the molecule. ...
*September 28, 2014*

**english -MS. SUE**

anything that you can be scared of
*September 28, 2014*

**english -Ms.Sue????**

?????
*September 28, 2014*

**english**

sorry but is there any other topics that i can relate the first one to?
*September 28, 2014*

**english**

what topics of fear can i relate the second quote to ?
*September 28, 2014*

**english**

we haven't really learned anything. we have to relate one of the quotes to any type of fear and right an essay about it.
*September 28, 2014*

**english**

oh okay thanks and also what does this quote mean "she tells everyone that a black guy stole the car...and at first everyone bought" what topicss of fear can this be related to?
*September 28, 2014*

**english**

i'm sorry but what does irrational fear of others mean?
*September 28, 2014*

**english**

what does this quote mean "we're not the bogeyman we're made out to be" and what topic of fear can this be related to?
*September 28, 2014*

**Trig**

A railroad tunnel is shaped like a semiellipse as shown below. A semiellipse is shown on the coordinate plane with vertices on the x axis and one point of intersection with the positive y axis. The height of the tunnel at the center is 27 ft and the vertical clearance must be ...
*September 27, 2014*

**trig**

karen, (who is 1,6m tall) wishes to calculate the height of a tall tree. she stands 50m from the base of the tree and measures its angle of elevation to be 36 degrees. determine the height of the tree?
*September 24, 2014*

**Maths**

Matt has a bag containing 12 green marbles and 8 blue marbles. Without looking, he pulls out one marbles and places it on the table. He then picks a second marbles from the bag. What is the probability he will have 2 blue marbles?
*September 23, 2014*

**economics**

How to calculate item weight of an item
*September 14, 2014*

**Chemistry**

A portable electric water heater transfers 255 watts (W of power to 5.5 L of water, where 1 W=1J/s.How much time (in minutes) will it take for the water heater to heat the 5.5 L of water from 27∘C to 49∘C? (Assume that the water has a density of 1.0 g/mL.
*September 12, 2014*

**chemistry**

25.6mL of ethanol (density =0.789 g/mL) initially at 5.4∘C is mixed with 30.4mL of water (density = 1.0 g/mL) initially at 20.4∘C in an insulated beaker.Assuming that no heat is lost, what is the final temperature of the mixture?
*September 12, 2014*

**chemistry**

How many kilowatt-hours of energy are necessary to heat the air in the house from 9∘C to 30∘C? The heat capacity of air is 1.03 J/g∘C.A room contains 45kg of air.
*September 12, 2014*

**chemistry**

Calculate the final temperature of 30mL of ethanol initially at 15∘C upon absorption of 913J of heat. (density of ethanol =0.789 g/mL)
*September 12, 2014*

**grammar and punctuation**

The patient was taken to the operative suite, placed supine, anesthetized, and intubated in the usual fashion
*September 12, 2014*

**SCIENCE**

A flask weights 46.8 g when it is empty and 121.6 g when filled with water. When the same flask is filled with another liquid, the mass is 91.2 g. What is the density of the second liquid?
*September 8, 2014*

**science**

Describe a fourth scenario in which either the Law of Conservation of Matter or the Law of Conservation of Energy could be observed. Using as many sentences as needed, describe how an experiment could be set up to further explore your recorded observation. The goal is to show ...
*September 8, 2014*

**math**

simplify with a positive number y^-9*y^3=
*August 27, 2014*

**algebra**

Larry Mitchel invested part of his $32,000 advance at 7% annual simple interest and the rest at 6% annual simple interest. If this total yearly interest from both accounts was $2,050, find the amount invested at each. The amount invested at 7% is.... The amount invested at 6% ...
*August 27, 2014*

**math**

16 + .08x = 10 + 0.13x x=120
*August 27, 2014*

**math**

the first planhas a $16 monthly fee and charges an additional $.08 for each min. of calls. the second plan charges $10. fee and charges an addition $.13 for each min. for how many min. of calls will the cost be equal?
*August 27, 2014*

**PHI 208**

What would be the most plausible message that Groundhog Day is communicating about the relation between ethical standards and individual happiness?
*August 24, 2014*

**PHI 208**

which of these theories best describes the transformation of Phil Connors (Bill Murray) by the end of Groundhog Day?
*August 24, 2014*

**Am I right?**

I have to state three causes and effects of the cold war. Causes: -The Soviet union was trying to get surrounding countries to become communist -The acquisition of atomic weapons by America caused fear in the Soviets. -Both countries feared an attack from each other. Effects...
*August 22, 2014*

**math**

Oh okay, Thank you Mrs. Sue!
*August 22, 2014*

**hitler**

The policy of appeasement was a way that Britain and France gave Hitler whatever he wanted so he would eventually back down. I feel that, the policy of appeasement didn't have much affect because if he wanted to conquer Europe he could have. So do I put no?
*August 22, 2014*

**math**

If Britain and France had not adopted a policy of appeasement, would Adolf Hitler have been as successful as he was in overrunning Europe
*August 22, 2014*

**ENGLISH**

In what year was this article published? In what year was the film Minority Report set? What gaming console does the article mention? Why does the article mention this gaming console? What is the “Star Trek effect,” and how does it relate to what you have learned ...
*August 22, 2014*

**Statistics**

The scores for math test #3 were normally distributed. If 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students scored above an 85%?
*August 22, 2014*

**phi 208 ethical and moral reasoning**

In his discussion of virtue and honor in the military, what does Robinson consider to be the relation between integrity and magnanimity
*August 21, 2014*

**math**

What is 10% decrease of the number four? A) 3 B) 15 C) 18 D) 20 E) 30 Lucky guess... C?
*August 13, 2014*

**Algebra**

I need help trying to put the correct vocabulary words when solving this problem such as grouping, factor, prime factor, GCF, and perfect square, and please check and see if I am doing this correctly. 15x^2+31x+2 In my last problem I will be using the “ac method” A*C...
*August 10, 2014*

**Algebra**

I also need you to check and make sure that I am using the FOIL method correctly for this problem. #82). 9w-w^3 9w-w^3=w*(w^2-9) I have to factor out the GCF, which is “w”. 9-w^2=3^2-w^2= (3-w) (3+w) = (3-w) (w+3) 3-w=-(w-3) (3-w)(W+3)=-(w-3) (w+3) 9w-w^3=w (9-w^2) =...
*August 10, 2014*

**Algebra**

I also need you to check and make sure that I am using the FOIL method correctly for this problem. #82). 9w-w^3 9w-w^3=w*(w^2-9) I have to factor out the GCF, which is “w”. 9-w^2=3^2-w^2= (3-w) (3+w) = (3-w) (w+3) 3-w=-(w-3) (3-w)(W+3)=-(w-3) (w+3) 9w-w^3=w (9-w^2) =...
*August 10, 2014*

**Algebra**

I need help trying to put the correct vocabulary words when solving this problem such as grouping, factor, prime factor, GCF, and perfect square, and please check and see if I am doing this correctly. 15x^2+31x+2 In my last problem I will be using the “ac method” A*C...
*August 10, 2014*

**Algebra**

How do I factor u^2+18u+81? Please help
*August 9, 2014*

**Algebra**

Please help me simplify y^3x^6/y^5x^4
*August 9, 2014*

**Algebra**

what is the GCF of 15x^4 and 13y^2 I am having a difficult time trying to figure it out.
*August 9, 2014*

**Algebra**

what is the Greatest common factor of 4w^3 and 13w^2 I am thinking it's 52w
*August 9, 2014*

**Algebra**

I need help with this problem. What is the Greatest common factor of 12x^2 and 9x?
*August 9, 2014*

**Math 221**

Need help please explain how to get the answers for these two factoring problems and for the second problem with the "ac method". 2a^2+1+3a 15x^2+31x+2
*August 8, 2014*

**Math 221**

Need help please explain how to get the answers for these two factoring problems and for the second problem with the "ac method". 2a^2+1+3a 15x^2+31x+2
*August 7, 2014*

**Math 221**

9w-w^3 I need someone to explain step by step how do I factor this problem
*August 7, 2014*

**Math 221**

Can someone please explain this step by step
*August 7, 2014*

**Math 221**

9w-w^3 I need someone to explain how do I factor this problem
*August 7, 2014*

**Math**

In a program,class 7 students planted as many trees as their number in class. If total planted trees =144.Find how many students were there ?
*August 7, 2014*

**help please!**

11. Jane is creating a slide that will have a large heading and a number of bullet points below it. What slide format should she use? A. Comparison B. Two Content C. Title Only D. Title and Content 12. Suppose you're creating a slide presentation. During the presentation, ...
*August 6, 2014*

**Math**

The question says When the square of a certain number is diminished by 5 times.. What does diminished by mean?
*August 6, 2014*

**pol201**

Presidents often resort to the use of white house czars because?
*August 3, 2014*

**Science **

Aplastic walk his two sides that measures 4 cm, 2 can, and 3 cm. it's mass is 19.2 g. Predict the block will float in water. Will it float in all of oil? Gather information before making a production.
*August 2, 2014*

**math**

The length of rectangle is 120% that of the breadth. The perimeter is 88m. Find the area of the rectangle?
*July 27, 2014*

**science**

1o grams of caster sugar dissolved in 25 degrees long to does it take.
*July 20, 2014*

**Math**

Oh I think I understand, because of the invisible coefficient of 1 in front of x, it'd be 1x-0.6x = 0.4x?
*July 6, 2014*

**Math**

I'm sorry- I don't understand how x minus 0.6x equals 0.4x?
*July 6, 2014*

**Math**

Where did the 0.4x come from?
*July 6, 2014*

**Math**

When x is increased by 5, the result is 60% of increasing x by 15. What is the value of x? I got this far: x+5 = 0.60(x+15) x+5 = 0.60x + 9 x = 0.60x + 4 What is the next step?
*July 6, 2014*

**physics**

Which equation would you use when you were describing a flowing viscous fluid? Select one: a. The Bernouilli Equation b. The Poiseuille Equation c. The equation of continuity d. And of the Equation of continuity or the Bernouilli Equation or the Poiseuille Equation.
*June 22, 2014*

**physics**

The definition of an incompressible fluid is Select one: a. A fluid with a constant density at all pressures b. A fluid with no viscosity c. A fluid with a constant pressure d. A fluid with viscosity
*June 22, 2014*

**PHYSICAL GEOGRAPHY**

WHICH KIND OF MASS WASTING MOST LIKELY LEFT THIS DEPOSIT, A TYPE OF FLOW OR A TYPE OF SLIDE?
*June 20, 2014*

**math apr **

A car with a sticker price of $42,650 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the nearest cent.) (b) Find the monthly payment if financed at 2.5% add-on interest for 60 months. (Round ...
*June 17, 2014*

**statistics**

The true highway mileage, Y, of a specific brand of hybrid vehicle has a normal distribution with a mean of 42 and a standard deviation of 1.5. Find the probability that a randomly selected hybrid vehicle gets more than 38 miles to the gallon.
*June 17, 2014*

**science**

Its a medical term......
*June 13, 2014*

**science**

PLEASE HELP I am trying to unscramble this word eyspoopcsadhohgogtasodou
*June 13, 2014*

**word scramble**

PLEASE HELP!!!! I have a 24 letter word that I am having problems unscrambling.. eyspoopcsadhohgogtasodou
*June 13, 2014*

**algebra**

Evaluate the polynomial when x =4 Evaluate the polynomial when x = 4: x3 - 5x2 + x
*June 10, 2014*

**math**

12 different flavors of ice cream and 2 different toppings. How many different kinds of sundaes could be made if each sundae contained 2 scoops of ice cream and one topping?
*June 9, 2014*

**algebra**

solve for the indicated letter. y=5x, solve for x d=55t, solve for t
*June 7, 2014*

**algebra**

solve using the addition principles; -8+y=17
*June 3, 2014*

**algebra**

In a math class, 20 students stayed up late to watch the basketball game and 5 did not. What conclusion can you make?
*June 2, 2014*

**algebra**

In a math class, 20 students stayed up late to watch the basketball game and 5 did not. What conclusion can you make?
*June 2, 2014*

**Math**

2012 value $156 Rate $4.50 increase per year
*June 2, 2014*

**Math **

Writing a Linear Equation You are given the 2012 value of a product and the rate at which the value is expected to change during the next 5 years. Use this information to write a linear equation that gives the dollar value V of the product in terms of the year. (Let t=12 ...
*June 2, 2014*

**algebra**

Need some one check my homework. Evaluate 3p/q when p=2 and q=6. Answer:1 Use < > or = for __ to write a true sentence: 0.001 __ 0.0010 Answer:< Question 3 Evaluate -3/8 - 5/8. Answer:7 Question 4 Evaluate: 84 + (-99) + 44 - (-18) - 43 = Answer:4 Question 5 Multiply...
*May 29, 2014*

**algebra**

-2/3<-1 true or false
*May 28, 2014*

**algebra**

all three
*May 28, 2014*

**algebra**

multiply (-1)9= evaluate 84+(-99) +44-(-18)-43 Use < or> for ____ to write a true sentence. 0.001____ 0.0010
*May 28, 2014*

**language arts**

1. Electric lighting was a novelty before it became (1 point) unusual. common. expensive. 2. Read the following paragraph from “The Electric Summer”: "That thrilled me, and scared me. The great world seemed to swing wide like ...
*May 20, 2014*

**Algebra**

select the approximate value of x that are solutions to f(x)=0 where f(x)= -5x^2+6x+9
*May 17, 2014*

** science**

1. Use the image below to answer the following question. At which position does the diver have the most potential energy? (1 point) 1 2 3 4 2. How does the gravitational potential energy of Coaster A compare with that of Coaster B? (1&...
*May 6, 2014*

**English**

which one is right
*May 5, 2014*

**Physics **

The angular velocity of a process control motor is (21−12t2) rad/s, where t is in seconds. A)At what time does the motor reverse direction? I got 6.5s B) Through what angle does the motor turn between t =0 s and the instant at which it reverses direction? Can you help ...
*May 5, 2014*

**Algebra 1b**

Determine the equation of g(x) that results from translating the function from f(x)=(x+2)^2 to the right 6 units
*May 4, 2014*

**statistics**

It has been suggested that the rate of forgetting (coded as normal vs. fast) for word lists often used in psychological experiments may depend on the type of memory test employed, either free-recall or recognition. What is the best way to test this hypothesis? a. regression b...
*May 3, 2014*

**Homework helpline?**

multiply [-1]9=
*April 28, 2014*

**MATH STATS URGENT**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*April 25, 2014*

**MATH STATS URGENT**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*April 24, 2014*

**Math**

The Houston Rockets and San Antonio Spurs will play a "best two out of three" series. Assume that Houston has a probability of 1/3 of winning any game. a. Draw a probability tree showing possible outcomes of the series. Label the branches with appropriate ...
*April 24, 2014*

**Math**

A marble is drawn from a bag containing four white, three red, and two blue marbles. Without replacing the first marble, a second marble is drawn. a. Draw a two stage outcome tree for this experiment. b. Turn the outcome tree into a probability tree diagram by labeling all of ...
*April 24, 2014*

**World History**

Which of the following is true of the Antarctic Treaty System?
*April 24, 2014*