Monday

May 25, 2015

May 25, 2015

Total # Posts: 139

**To DrBob222**

Thank you for that. Chemistry is the most challenging class for me and I am the one that assigned it (aq) because all that still confuses me too. In the original problems, we were just given the words and we need to write the chemical formulas. I get confused about when to use...
*April 21, 2015*

**Chemistry**

Oh my goodness! Thank you so much for pointing that out. Two little brackets - and it balanced just fine. Thank you also for explaining that this can be seen both ways, technically. It gives me a little more confidence.
*April 21, 2015*

**Chemistry**

I am having so much trouble understanding how to classify reactions as precipitation, acid base, or oxidation reduction. In one example in particular, it reads Iron II oxide reacts with oxygen and water to yield Iron III hydroxide. I wrote out the equation as: FeO(aq)+O2(g)+...
*April 21, 2015*

**math**

Wanda bought a pair of jeans for $32.50.She can purchase a second pair for 40% off the regular price.How much will she spend on two pair of jeans?
*March 24, 2015*

**physics**

Help: A 2 meter long, uniform bar with a mass of 46 kg is suspended from a pin so it can rotate freely. It is supported by a cable half a meter from the end. Find the tension force in the cable and the magnitude and direction of the reaction force at the wall for the bar to move
*March 18, 2015*

**English help**

Which one are you saying is right Ms. Sue. I had thought about hard news article but wasn't sure on it
*January 7, 2015*

**English help**

the date, time, and location of a robbery would most likely be included in? A feature article an editorial article a hard news article a letter to the editor I thought a featured article but really not sure
*January 7, 2015*

**Physical Science HELP**

What and how do I balance this if it needs to be done? Help please Balance the equation, if necessary, for the reaction between zinc and iodine. Zn + I2 „_ 2ZnI2
*January 7, 2015*

**English Check answer**

ok thank you so much
*January 6, 2015*

**English Check answer**

Thank you so much could you help me with this I don't understand these phases ( a golf Pro is underlined in this sentence) Raoul's sister, a golf pro, gave him basic instructions. adjective phrase appositive phrase adverb phrase or infinitive phrase I thought maybe ...
*January 6, 2015*

**English Check answer**

The birds "chirped" loudly every morning before sunrise. (1 point) action verb (THIS ONE) helping verb linking verb none of the above
*January 6, 2015*

**Literature**

Having this same issue because in the book there is war, there is the deal with johnnys friend and family (that he found out about) Fear of failure for sure and definitely coming o age Hmmm surprised no one has helped with this one
*January 6, 2015*

**art**

should of been "exist in" wrote after NOT
*November 20, 2014*

**Math**

A school has 30 rows of seats. Each row has 28 seats. How many seats are there?
*October 8, 2014*

**statistics**

At a local college, 81 of the male students are smokers and 729 are non-smokers. Of the female students, 350 are smokers and 350 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are ...
*September 8, 2014*

**science**

Why scientists used only mice from the same pure-bred strain is so that
*October 27, 2013*

**business studies**

i enjoy learning abt the forms of partnerships in a business to be an entrepreneur
*April 11, 2013*

**math**

an airplane climbs at a rate of 66.8 feet per minute. It descends at twice the rate that it climbs. Assuming it descends at a constant rate, how many feet will the aitplane descend in 30 minutes.
*April 7, 2013*

**english**

explain how content purpose and audience and tone impact academic writing. not good in writing papers
*January 11, 2013*

**algebra - absolute value**

i'm doing absolute value in open sentences and then graphing them. how would you solve |t-4| > t-4 ?
*November 29, 2012*

**Absolute Value in Open Sentences**

For the problem |t-4|>t-4 how would you graph it?
*November 29, 2012*

**Pre-cal**

Two lookout towers are situated on mountain tops A and B, 4 mi from each other. A helicopter firefighting team is located in a valley at point C, 3 mi from A and 2 mi from B. Using the line between A and B as a reference, a lookout spots a fire at an angle of α = 37° ...
*November 28, 2012*

**reading**

story was a little confusing... can someone give me a plot summary of Milk by Ron Carlson
*October 26, 2012*

**algebra**

A stone dropped from rest travels 160 ft the first 3 seconds. How far will it have fallen at the end of 5 seconds?
*October 15, 2012*

**Chemistry**

moles = grams/mol. wt. 4.141g/119mol.wt. = 0.03479832g
*October 15, 2012*

**physical science**

a 70 kg man and 50 kg woman are in a boat when its motor fails. the man dives into the water with a horizontal speed of 3 m/s in order to swim ashore. if he changes his mind, can he swim back to the boat if his swimming speed is 1 m/s? If not, can the woman change the boats ...
*September 19, 2012*

**physical science**

a yo-yo is swung in a vertical circle in such a way that its total energy KE and PE is constant. At what point in the circle is this speed maximum? A minumum? why? (b) if the yo-yo has a speed of 3 m/s at the top of the circl, whose radius is 80 cm, what is tis speed at the ...
*September 19, 2012*

**physical sciencei**

is the work needed to bring a car's speed from 0 to 10 km/h less than, equal to or more then the work needed to bring its speed from 10 to 20 km/h? if the amounts of work are different, what is the ratio between them?
*September 19, 2012*

**physical science**

a weightlifter raises a 70 kg barbell from the floor to a height of 2.2m in 1.2s. What was his average power output during the lift?
*September 19, 2012*

**physical science**

a 1kg object has kinetic energy of 1J when its speed is?
*September 19, 2012*

**Math**

If it takes 3.7 seconds for a sound to reach the bottom of the ocean how deep is the water
*September 16, 2012*

**physical science**

the 200g head of a golf club moves 40 m/s in a circular arc of 1.2m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? ignore the mass of the clubs shaft.
*September 14, 2012*

**physical science**

a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration of 1 m/s2. (b) what force would be needed to give an accelerattion of 10 m/s2 ?
*September 14, 2012*

**physical science**

the acceleration of gravity on the surface of venus is 8.9 m/s2. would a ball thrown upward from venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?
*September 14, 2012*

**math **

f(17)=12 f(7)=6 f(x)=?
*September 10, 2012*

**Honors Geometry**

Topic: Distance in Coordinate Plane Determine the value(s) of n if... J(n, n+2), K(3n, n-1), JK=5
*September 6, 2012*

**Business**

Envision that you run a highly successful tattoo and piercing parlor in a small West Coast city. You are fairly certain that between you and your key competitor, you have saturated your target audience of people in their teens and 20s. To grow your business, you need to reach ...
*September 5, 2012*

**physical science**

how many square feet are there in an area of 1.00 square meters( 1 ft.=0.305)? use the proper number of significant figures in the answer.
*September 2, 2012*

**science**

describe the efficiency of energy tranfer and how the amount of energy available at each trophic level affects the structure of the ecosystem>
*July 12, 2012*

**statistics**

Suppose X has a mound-shaped distribution with sigma=9. A random sample of size 36 has a sample mean 20. Is it appropriate to use a normal distribution to compute a confidence interval for the population mean u?
*June 5, 2012*

**algebra**

The area of a state is 7 times the area of another state. the sum of the areas are 32,000,000. what is the area of each state
*June 4, 2012*

**college algebra**

Determine the principal P that must be invested at rate r = 3 1 2 %, compounded monthly, so that $700,000 will be available for retirement in t = 13 years. (Round your answer to the nearest cent.) P = $
*March 28, 2012*

**Chemisty**

If 59.0 mL of 0.40 M HI is mixed with 100. mL of 0.10 M KOH what is the resulting pH?
*March 16, 2012*

**Chemistry**

A buffer containing 0.2832 M of acid, HA, and 0.1504 M of its conjugate base, A−, has a pH of 2.36. What is the pH after 0.0015 mol NaOH is added to 0.5000 L of this solution?
*March 16, 2012*

**macroeconomics**

if retiree benefits were frozen what would happen to total expenditures
*February 19, 2012*

**Economics**

One year ago, you bought a bond for $10,000.00. You received interest of $400.00 at the end of the year, as well as your $10,000.00 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.
*January 28, 2012*

**science**

Ho many millilitres of sucrose is needed to make 25 L of liquering soluton at 20% v/v
*January 2, 2012*

**science**

How many grams of copper sulfate is needed to make 1125L of 25 ppm solution
*January 2, 2012*

**science**

If 100g of CuSO4 took part in the following reaction how much Cu(0H)2 would be formed CuSO4 + 2NaOH to Na2SO4 + Cu(OH) 2
*January 2, 2012*

**science**

If 20g of Ca(0H)2 took part in the following reaction, how much CaCl2 would be formed. Ca(0H)2 + 2HCl to CaCl2 +2H20
*January 2, 2012*

**comm/155**

how to start the paper off in using all 4
*December 18, 2011*

**Math**

3x² - 4 = 23
*October 6, 2011*

**Science**

As the angle between the direction of the applied force in the direction of movement increases from zero to ninety what happens to the fraction of the force that contributes to the work?
*October 6, 2011*

**history**

what is vigilantism and how and when does it arise? (political philosophy)
*October 2, 2011*

**history**

What system of government did Plato recommend in The Republic?
*October 1, 2011*

**history**

The three main ideals that all political systems strive to achieve are freedom order and equality. Why do these values compete with one another?
*October 1, 2011*

**MATH**

Five cards are dealt from a well-shuffled standard deck. using combinations, write an expresssion for the probability all are hearts
*September 28, 2011*

**MATH**

Five cards are dealt from a well-shuffled standard deck. using combinations, write an expresssion for the probability all are hearts
*September 28, 2011*

**MATH**

From a standard deck of cards, two cards are randomly drawn, one after the other without replacement. The color of each car is noted. Which is less likely to occur: two red cards or a red card and a black card? Explain.
*September 28, 2011*

**hum/176**

Overview of themes of the impact of the internet on politics
*June 5, 2011*

**elementary statistics**

how many seven digit telephone numbers are possible if digits can be repeated?
*May 29, 2011*

**english**

Which version of the American Dream is more realistic, Jay Gatsby or Tom Joad?
*May 24, 2011*

**MATH**

You purchased 150 ft. of chain that normally sells for $0.15 per inch. You were charged $22.50 for the sale. Was the price correct? If not, what is the correct price and what mistake was made?
*May 5, 2011*

**math**

Volume of Aluminum Foil. One cubic centimeter of aluminum weighs 2.7 grams. If a piece of aluminum foil weighs 5.4 grams, find the volume of the aluminum foil.
*March 31, 2011*

**math**

Class has 28 students. 23 like basketball. Also, 15 like baseball. 12 like both. How many students do not like either.
*March 29, 2011*

**Math**

If the following amounts of lumber need to be delivered to 2 different staging areas at 4 different job sites, how many total boards of each size will you need? 1.65:2x4s 2.45:2x8s 3.25:2x10s How to work this problem.
*February 12, 2011*

**geometry**

ab=21, bc=14,and ad=54
*February 10, 2011*

**FAST MATH HELP**

Thanks so much Jasper:)
*January 13, 2011*

**FAST MATH HELP**

Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do this in some kind of ...
*January 13, 2011*

**Math**

Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do this in some kind of ...
*January 13, 2011*

**Math**

Thanks helper:)
*January 13, 2011*

**Math**

Need help problem solving-- A 500 space parking lot is packed with motorcycles and passenger cars, with only one vehicle in each space. How many motorcycles & cars r there if the total number of tires on the parked vehicles is 1650? I think I have to do this in some kind of ...
*January 13, 2011*

**math**

which of the following repressents an irrational number? 1/2 16 8 .36
*January 10, 2011*

**Drug Information Sources**

I am about to submit my answers to PennFoster for this exam and wanted to ck ONE question to see if I was correct. My first thought when I came across this was "take your own damn test" and EVEN after reading your "reason" for posting the ENTIRE test,I ...
*December 22, 2010*

**PHYSICS**

what is the different between a scalar and vector?
*December 22, 2010*

**science**

what is the relationship between a scientific law and scientific theory? what is the difference between a hypothesis and a theory?
*December 22, 2010*

**Business Algebra**

Part I: As a financial planner a client comes to you for investment advice. After meeting with him and understanding his needs, you offer him the following two investment options: Option 1 (refer to section on Mathematics of Finance in your text.): Invest $23,000 in a savings ...
*December 21, 2010*

**PHYSICS**

which has more inertia, a mouse or elephant?
*December 19, 2010*

**PHYSICS**

Search: a 1.0 kg mass weighs 9.8 n on earths surface and the radius of the earth is roughly 6.4x10 to the 6 m. what is the mass of the earth and the average density of Earth
*December 8, 2010*

**physics**

A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero
*November 28, 2010*

**Physics**

Two spheres A and B, where A has twice the mass of B, are projected at the same horizontal velocity off the edge of two different height shelves. Sphere A leaves from a height of 2.0 m. Sphere B leaves a shelf 1.0 m off the floor. If both spheres leave the edge of the table at...
*November 27, 2010*

**chemistry**

how many moles of butane gas c4h10 react to produce 3.50moles of water?
*November 4, 2010*

**budget and forecasting**

Using the table “Gasoline Sales Time Series”, calculate the forecast for gasoline sales (in thousands) for Week 13 using a three day moving average. Gasoline Sales Time Series Week Sales (000’s of gallons) 1 17 2 21 3 19 4 23 5 18 6 16 7 20 8 18 9 22 10 20 11 15...
*October 31, 2010*

**Finance**

Part I: As a financial planner a client comes to you for investment advice. After meeting with him and understanding his needs, you offer him the following two investment options: Option 1 (refer to section on Mathematics of Finance in your text.): Invest $23,000 in a savings ...
*October 20, 2010*

**Economics**

Current Yield - $2/$50 = 4% Capital Gains - ($53-$50)/50 = 6% Return: - 4% + 6% = 10% Hope this helps.
*October 19, 2010*

**Economics**

Suppose that the price of a stock is $50 at the beginning of a year and $53 at the end of the year, and it pays a dividend of $2 during the year. Calculate the stock’s current yield, capital-gains yield, and the return. Show your work for three separate calculations.
*October 19, 2010*

**Economics**

One year ago, you bought a bond for $10,000. You received interest of $400 at the end of the year, as well as your $10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work
*October 19, 2010*

**Economics**

Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.
*October 19, 2010*

**chemistry**

what is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97 atm & temp of 32 C? R= 0.0821 L atm/mol K
*April 18, 2010*

**Chemistry**

DrBob222 - can you set up the equation for the volume problem, i don't have a clue... Is this Charles Law? I know how to change C to K you add 273, but I don't know what figures go where in this formula PV=nRT......
*April 18, 2010*

**chemistry**

DrBob222 - for molar mass do you use significant figures? If so would the answer be 0.05 (3.55/65.39)3.55 has 3 SF's correct?
*April 18, 2010*

**chemistry**

Write and balance the chemical reaction when gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (CH4) & liquid water
*April 18, 2010*

**chemistry**

What is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97atm and a temperature of 32 degrees celius? R=0.0821 L atm/mol K
*April 18, 2010*

**chemistry**

Calculate the molar mass of baking powder (NH4)2CO3
*April 18, 2010*

**Chemistry**

What is the amount in moles of 3.55g of zinc(Zn)
*April 18, 2010*

**Social studies**

How did the Peace of Augsburg affect the Catholic Church?
*December 28, 2009*

**math**

find the unit rate 68 mi on 2 gal
*December 2, 2009*

**Chemistry**

Consider the following electron configuration. (σ3s)2 (σ3s*)2 (σ3p)2 (π3p)4 (π3p*)4 Select four species that, in theory, would have this electron configuration.
*October 9, 2009*

**francais**

Please could you proof read my work. Thanks J'essaie de manger sainement, je mange 3 ou plus de fruit et légumes et un morceau de chocolat tons les jours. J'adore le fromage mais je connais gras. J'aime boire l'eau parce que saine. J'exerce ré...
*September 30, 2009*

**college**

what are some of the changes the United States has made to policies concerning treatment of muslims and arabic members of society
*August 6, 2009*