Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 68,333

**Chemistry**

How do I calculate moles from the given litres and mass of the substance (in grams)?

**Chemistry**

How do I calculate moles from the given litres and mass of the substance (in grams)?

**math**

A patient is not allowed to have more than 300 milligrams of cholesterol per day from a diet of eggs and meat. Each egg provides 150 milligrams of cholesterol. Each ounce of meat provides 100 milligrams of cholesterol.

**Ms. Sue**

Can you evaluate my answers in my previous "English/Literature Questions" post? Thank you.

**Literature/English Questions**

Read each of the following passages of descriptions of events from the play. Identify which type of irony is used in each passage or description. Then briefly explain the contrast of contradiction that occurs in each passage. 1. TRAVELER: So, what do you reckon? Any good, is h...

**calculus**

Solve for x: r(x)=ln (x+2/x-1)

**msth**

Professor White asked his students to put the number of hours each studied for the final exam on a piece of paper and turn that paper in with the exam. The pieces of paper indicate that students studied 10, 3, 4, 25, 1, 4, 4, 12, 6, 8, and 10 hours. What is the modal number of...

**Literature/English Questions**

1. The woman on the sidewalk's involvement in the story is very little. She merely laughs while passing, telling her companion that Mitty “said ‘Puppy biscuit’ to himself.” Nevertheless, the reader's understanding of Walter Mitty would be very diffe...

**Literature/English Questions**

Please, I am struggling with these. Can someone help me by answering them? Or at least assisting me to? Thank you in advance to anyone who are able to. These questions regard the short-story "The Secret Life of Walter Mitty." Describe each character's involvement...

**home economics**

Use the Expenditure Equation for GDP (GDP = C + 1 + G + XN). Using your research skills, find the values for each sector for the years 1929 and 1933. Determine the percentage change for the two years. Explain the drastic change and what this meant for the U.S. population.

**ela **

in chapter 9 site specific examples ex: ms.maudie is thoughtful of other "only thing i worried about...was all the danger and commotion it caused... this whole neighborhood could have gone up." i did all of them except these please help atticus tie racism to a lack o...

**physics**

An canon ball is launched from ground level directly upward at 39.2 m/s. For how long is the canon ball at or above a height of 34.3 meters?

**Math**

Can someone please explain to me exactly what type of math this is (e.g. radicals, linear equations) and how I would go about solving this?

**Probability**

??

**ela **

in chapter 9 site specific examples ex: ms.maudie is thoughtful of other "only thing i worried about...was all the danger and commotion it caused... this whole neighborhood could have gone up." i did all of them except these please help atticus tie racism to a lack o...

**Science data**

Can your data be considered as graphs?

**Math**

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither white nor short-tailed. 5...

**chemistry**

If a satellite orbits the earth at a velocity of 2.9 x 103 km/hr, this would be the same as how many in/sec?

**Math :Probability**

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither white nor short-tailed. 5...

**Probability**

The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the probability that..... The perso...

**U.S. History**

1. Explain how the United States contributed to the Allied war effort during World War I. 2. Discuss the role America played in determining the outcome of the conflict.

**Probability**

The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the probability that..... The perso...

**Probability**

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither white nor short-tailed. 5...

**biology**

yea what is the complexity of asexual and sexual reproduction and the types of sexual reproduction is it sexual and asexual

**biology**

complexity of asexual and sexual

**Physics **

Suppose a straight 1.60mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗ , which is horizontal, perpendicular to the wire, and of magnitude 4.2×10−5T . What current would th...

**U.S. History**

1. Explain how the United States contributed to the Allied war effort during World War I. 2. Discuss the role America played in determining the outcome of the conflict.

**Chem**

1n(216/760)=(30.38kj/8.3145) (1/318-1/T) -1.258= 3.735 (0.00314-1/T) -1.258= 0.0117-1/T -1.2697= 1/T T =-1.2697 I feel like i did this wrong

**Chem**

for x I got 30380.8 but I'm not sure where you got 0.8535? And i don't know how to answer the second part (answer in degrees celsius)

**Chem**

Thanks! for the first part, my answer is supposed to be kj/mol

**Chem**

i meant (1/296 - 1/318)

**Chem**

ln(216/92)=(DeltaH vapor/8.3145)(1/296- 1/3180 2.348= 0.00234 DeltaHV/8.3145 DeltaHv=0.000281 Im kinda confused and don't know where to go from there?

**Chem**

A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 216.0 Torr at 45.0 °C. Calculate the value of ΔH°vap for this liquid. Calculate the normal boiling point of this liquid.

**Math**

7+8= 15 15 x 25 = 375

**Calculus Please help!**

$4000 is invested at 9% compounded quarterly. In how many years will the account have grown to $14,500? Round your answer to the nearest tenth of a year

**Chem 2**

so i do 0.00346mols x 1.56 = 0.00539?

**Chem 2**

delta T=Kfm -5.23=37.8m -5.23-37.8 =m m=-43.03

**algebra**

-1/3 < -2/5

**A Peculiar Question**

Can constant belittlement and hen-pecking be considered aspects of one's personality?

**Science**

How does the silly putty made up of glue gel differ from the silly putty made of soap in terms of texture ? How would the touch be different and why? Chemical structure? .....? Science:Chemistry - bobpursley, Friday, February 21, 2014 at 9:53pm Have you made the two masses? Sc...

**Science:Chemistry**

Yes,but scientically I don't know how to explain this.

**Science:Chemistry**

How does the silly putty made up of glue gel differ from the silly putty made of soap in terms of texture ? How would the touch be different and why? Chemical structure? .....?

**English**

Which sentence is grammatical? There is no holes. There are no holes.

**economics**

none of the above

**economics**

1.. Suppose that U(x; y) = min(x; y) with px = 1 and py = 1. Describe and illustrate the income and substitution effects of an increase in the price of good y. What does this imply about a tax imposed on good y.. 2.. Let U(x; y) = 5x:8y:2 showing all derivation work, find: (a)...

**economics**

Let U(x; y) = 5x:8y:2 showing all derivation work, find: (a) the Marshallian demand functions for x and y (b) the Indirect Utility Function (c) the compensated demand functions xc and yc

**Math**

What is a 10% year raise of $3,000 per month? What is a 15% year raise of $3,000 per month?

**Math repost **

At a business meeting at panera bread company the bill for two cappuccinos and there house lattes was $14.55. At another table the bill for one cappuccino and two house lattes was $8.77. How much did each type of beverage cost? I'm not sure how this would be worked out. Ca...

**physics**

The distance between two telephone poles is 49 m. When a 1.6 kg bird lands on the telephone wire midway between the poles, the wire sags 0.149 m. The acceleration of gravity is 9.8 m/s2 . How much tension in the wire does the bird produce? Ignore the weight of the wire. Answer...

**Intermediate Algebra**

Can you show the work of how to work this word problem ? A local electronics store will sell 7 ax adapters and 2 rechargeable flashlights for $86 or 3 ac adapters and 4 rechargeable flashlights for $84. What is the price of a single ax adapter and a single rechargeable flashli...

**English**

*or

**English**

Did a song about selfies really just play on my itunes radio? Should it be play it played

**Algebra 1**

I am confused. Steve said the correct answer is 7x^4 - 2x + 5.

**Algebra 1**

Add (5x^2 - 2x + 9) + (2x^2 - 4). My answer: 7x^4 - 2x + 5 or 7x^2 - 2x + 5?

**Algebra 1 **

Genie has 100 feet of fence with which to make a rectangular cage for her rabbit. If she uses the wall of her house as one side, the area of the cage in square feet is given by the polynomial -2w^2 + 100w, where w is the width of the cage in feet. What is the area of the cage ...

**Pathogen Question**

As I know, both protozoa and viruses use host cells. But I want to clear up a couple of doubts about the two. 1. Do protozoa take over the host cells? I know protozoa live in the cells, but I think that only viruses take over the host cells. Is this right? 2. Which of the two ...

**Algebra 1 Answer Check**

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25? 3. When the polynomial 5x - 2x + 8x^2 - 7 is written in standard form, what is the leading coefficient? My answer: -2? 4. Classify the polynomial 5x^2 + 9x + 1 according to tis degre...

**Algebra 1**

The answer is 2 ( W ^ 2 + 4 W )? I wouldn't simplify it?

**Algebra 1**

So the answer is: A = 2w^2 + 4w?

**Algebra 1**

Which is which?

**Algebra 1**

Have you provided me with a method or the answer?

**Algebra 1 **

Can someone simply tell me what methods I must use in order to solve this word problem? Please, don't include the answer. I wish to solve this on my own. However, I would truly appreciate it if anyone could evaluate my answer afterwards. "A rectangle has a width w and...

**Algebra 1--???**

Have I answered correctly?

**Algebra 1**

My answer: 2w^2 + 4^2?

**Algebra 1 **

Can someone simply tell me what methods I must use in order to solve this word problem? Please, don't include the answer. I wish to solve this on my own. However, I would truly appreciate it if anyone could evaluate my answer afterwards. "A rectangle has a width w and...

**Algebra 1**

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25? 3. When the polynomial 5x - 2x + 8x^2 - 7 is written in standard form, what is the leading coefficient? My answer: -2? 4. Classify the polynomial 5x^2 + 9x + 1 according to tis degre...

**Science**

Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must bo...

**Science**

Does a virus have to take over a host cell in order to reproduce?

**physics**

i tried that and answer is incorrect....

**science**

Because the material is not dissolved into the liquid. Its merely blended and the viscosity of the liquid holds it in place so that it doesn't settle out. In other words the two don't mix and are by themselves unchanged (unlike a solution where one part dissolves into ...

**Statistics**

Most problems of the "at least" type are best done by subtracting from total. P(at least one x) = 1 - P(no x's) = 1 - (25/26)^3 = 0.111 (3dp) So, Yes, you are correct.

**Statistics**

Selecting a letter of the alphabet: If 3 letters of the alphabet are selected at random, find the probability of getting at least one letter "x". Letters can be used more than once. My answer was: P(at least 1 "x) = 1 - (25/26)^3 = 1951/17576 or 0.11 Is this cor...

**Algebra 1**

1. Simplify the quotient (6.4 x 10^9) / (1.6 x 10^-3). Write the answer in scientific notation. My answer: 4 x 10^6? Simplify. 2. a^16/a^4 My answer: a^12? 3. (4y^6/x^3)^2 My answer: 16^12/x^6? 4. (2/b^5)^-3 My answer: b^15/8?

**World history 201**

After years of extensive study, scholars have concluded that the olmecs of southern Mexico originally emigrated from Africa. True or False

**History**

As the first ruler of the Xia Dynasty, King Tang was the source of many social problems in China. True or False

**History **

as a christian, persian king khosrow I forbade zoroastrian teaching throughout his empire true or false

**Algebra 1 (Reiny)**

1Simplify the quotient (6.4 x 10^9) / (1.6 x 10^-3). Write the answer in scientific notation. My answer: 4 x 10^6? Simplify. 2. a^16/a^4 My answer: a^12? 3. (4y^6/x^3)^2 My answer: b^15/8?

**statistics**

Simple question I may be over thinking 30. Gift Baskets: The Gift Basket Sore had the following premade gift baskets containing the following combinations in stock. cookies mugs candy -------------------------------------- coffee 20 13 10 tea 12 10 12 Choose 1 basket at random...

**physics**

Two spheres are launched horizontally from a 0.8 m high table. Sphere A is launched with an initial speed of 16 m/s. Sphere B is launched with an initial speed of 8 m/s.

**Algebra 1 (Reiny) **

A computer modem can transmit 1.5 x 10^6 bytes per second. How many bytes can it transmit in 300 seconds? Write your answer in scientific notation.

**science**

Thanks Doctor and Damon for your help

**science**

Why the moon looks different at different times?

**Calculus**

Solve the differential equations

**Calculus**

xy'-y=2xlnx

**Science**

Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must bo...

**Art - Color schemes**

I've been searching for a good 3-way color scheme. Blue, purple, & pink are my usual choice, but I need a new scheme for this.

**math**

13 cups

**Probability**

+54

**Probability**

There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither white nor short-tailed. 5 mice have all three characteristics and 2 have no...

**Algebra 1 (Reiny)**

The measures of the sides of a triangle are shown as polynomials. The measures are: 2s^3 + 4; 5s; 4s^2 + 1. Write a polynomial to represent the perimeter of the triangle.

**Bio Chemistry **

There are two main ways in which molecules are transported into and out of cells - active transport and passive transport. Which of the following statements is true of passive transport?

**math**

She has more square buttons because 2/3 = 16/24 and 2/8 is the same as 9/24

**goal setting**

Keeping a separate schedule for your studies apart from other activities is: A. a waste of time. B. a good idea. C. too tedious. D. does not matter.

**Probability**

The probability that Kate goes to the cinema is 0.2. If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the probability that 1. Kate goes ...

**Probability**

There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither white nor short-tailed. 5 mice have all three characteristics and 2 have no...

**Chemistry**

Consider the two equilibria: BaF2=Ba2+ + 2F- Ksp=1.7x10^(-6) F- + H20=HF + OH- Kb=2.9x10^(-11) Determine the solubility of BaF2 at pH=5? What I'm mostly confused about is how to determine if F- is dominant or if you have to take HF into account while doing your calculations.

**chemistry**

How many enthalpy changes (ÄH’s) would be required to calculate the total enthalpy change when ice at 0.0oC is turned to steam at 100.0oC?

**6th grade science - CHECK MY ANSWER**

why does evaporation make ocean water saltier

**tech**

Why is drawing important to Technology and Engineering?

**Science**

Which of the following body systems does not rely on the autonomic nervous system to simulate involuntary events? A. skeletal system B. digestive system C. circulatory system D. respiratory system A

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