Monday

April 27, 2015

April 27, 2015

Total # Posts: 1,318

**chemm**

When a reaction mixture with a total volume of 1180 mL that is 0.0110 M aqueous NaCl was stoichiometrically produced as per the balanced equation, what volume (mL) of 0.0116 M aqueous Ca2+ was required? 3 CaCl2(aq) + 2 Na3PO4(aq) → Ca3(PO4)2(s) + 6 NaCl(aq) Molar Mass (g...
*December 7, 2010*

**chemistry**

If 840 mL of 0.0140 M aqueous Al3+ and 500 mL of 0.0680 M aqueous Br- are reacted, what mass (g) of Br- is produced? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) Molar Mass (g) Br- 79.904 Al3+ 26.982 Br- 79.904 Molar Volume (L) 22.400 at STP Gas Constant 0.0821
*December 7, 2010*

**Chemistry**

Does HCl form a precipitate with NaClO?
*December 6, 2010*

**physics**

To balance a 40.8-kg automobile tire and wheel, a mechanic must place a 41.7-g lead weight 25.0 cm from the center of the wheel. When the wheel is balanced, its center of mass is exactly at the center of the wheel. How far from the center of the wheel was its center of mass ...
*December 2, 2010*

**Pre-Calculus**

Thank you a 1000 times Reiny!
*December 2, 2010*

**Pre-Calculus**

It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than 13 hours is fatal. Assume that Kryptonite decays at an hourly rate of 5.35% If superman is trapped in a room with 6 grams of ...
*December 2, 2010*

**PRE-CALC**

A drug is eliminated from the body through urine. Suppose that for an initial dose of 10 milligrams, the amount A (t) in the body t hours later is given by A(t) = 10(0.8) t a) Estimate the amount of the drug in the body 8 hours after the initial dose. b) What percent of the ...
*December 2, 2010*

**Pre-Calc**

Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than ...
*December 2, 2010*

**thefacility**

003048
*December 1, 2010*

**the staff**

003049
*December 1, 2010*

**PHYSICS**

Thank YOu!
*November 29, 2010*

**PHYSICS**

1)A picture of width 40 cm weighing 40N hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail which is 3 cm higher than the points where the wire is attached to the frame. Find the tension of the ...
*November 29, 2010*

**Chemistry**

A solution that has an osmotic pressure greater than that of red blood cells is called?
*November 29, 2010*

**Chemistry**

What is the concentration, in w/w%, of a solution prepared from 50.0 grams NaCl and 150.0 grams of water? I think it would be 25.0%, but I'm struggling with these new concentration calculations.
*November 29, 2010*

**college, teaching**

obstacles in the first year of teaching
*November 27, 2010*

**Chemistry**

Sodium oxide, reacts with water to give NaOH. A) Write a balance equation? B)What is the pH of the solution prepared by allowing 1.55 g of Na2O to react with 500.0 ml of water? (assume there is no volume change) C) How many milliliters of 0.0100M HCL are needed to neutralize ...
*November 21, 2010*

**Verb tense**

Dinnie does pay bills online each month.
*November 21, 2010*

**health,safety and nutrition**

Why health, safety and nutrition strategies are important ti identify and practice in an early childhood education programs.
*November 20, 2010*

**English**

The packet of biscuits has passed its expiry date or The packet of biscuits has past its expiry date. Or both sentences correct?
*November 20, 2010*

**English**

There is a host of reasons... or There are a host of reasons.... Which is correct?
*November 20, 2010*

**physics**

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices ...
*November 13, 2010*

**Chemistry-Please Help!**

I have these 5 chemical equations and I keep getting the same 1:1 ratio on all of them. I must be doing something wrong! KCL + NaNO3 = KNO3 + NaCl HNO3 + KOH = H2O + KNO3 H2O + SO3 = H2SO4 4Na + O2 = 2Na2O 2NO2 = 2NO + O2
*November 11, 2010*

**Chemistry**

What would be the molecular ratio of the following equation? 2NO2 = 2NO + O2
*November 11, 2010*

**algebra**

write the slope-intercept equation for the line that passes through(4,3) and has slope 5/4.
*November 9, 2010*

**FIT**

Joe Nautilus has $120,000 and wants to retire. What return must his money earn so he may receive annual benefits of $20,000 for the next 14 years?
*November 2, 2010*

**Statistics**

What type of data must you collect to conduct a t-test? Why?
*November 1, 2010*

**Algebra**

Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: C(g) = (3.5)g a) Find C(2) b) Find C(5)
*October 28, 2010*

**Physics**

Also it's not 1800, it's 1/800 so it would be: .046kg * 44 = 2.024 2.024/(1/800) It should equal = 1619.2 Check your answer but that should be it, especially if they're asking you in units of N
*October 27, 2010*

**Physics**

Also it's not 1800, it's 1/800
*October 27, 2010*

**English**

With reference to an earlier question:- The liquid is to be scooped at a quarter of the depth of the container it is in. Hence the first sentence is correct? Or is there a better way of phrasing? The liquid should be scooped at a quarter depth of the container? Posted by ann ...
*October 26, 2010*

**English**

1)Please advise us on the status of our application. 2)Please advise the status of our application. Which sentence is correct?
*October 26, 2010*

**English**

The liquid is to be scooped at a quarter of the depth of the container holding it is in. Hence the first sentence is correct? Or is there a better way of phrasing?
*October 26, 2010*

**English**

The liquid should be scooped at a quarter depth. or The liquid should be scooped at a quarter depths. Which is correct?
*October 26, 2010*

**English**

"Your prompt action in providing the information by tomorrow would be appreciated." Is the above sentence correct?
*October 24, 2010*

**English**

Which sentence is correct? 1) Please provide the shelf life information on the following biscuits: - or 2) Please provide the shelf life information of the following biscuits: -
*October 24, 2010*

**English**

Is the following sentence correct? Please provide us with the requisite information on the product.
*October 24, 2010*

**English**

Please expedite in providing all necessary documents. Is this sentence grammatically correct?
*October 23, 2010*

**AED 201**

I think that is where I am confused to. It just says the first technological event in education and then the second for each time period. I have found one website that helped, im not sure if it is the correct information, but it only went up until 2000. I am still looking for ...
*October 23, 2010*

**AED 201**

I am looking for information on the use of technology in school. I need the 1st and 2nd event from 1980, 1990 and 2000. Ive been searching since yesterday. I do not want the answers, just pointed in the right direction. I guess im not searching right or something Thank you.
*October 23, 2010*

**History**

In their reporting of elections, the media tend to place cendidates and issues in the context of
*October 21, 2010*

**Math**

Explain how the digit 1 can have a different values in 111
*October 21, 2010*

**math**

which decimal has the highest number 4.1, 6.3, 0.31
*October 20, 2010*

**Chemistry**

Posted by ann on Sunday, October 17, 2010 at 4:26am. In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)
*October 17, 2010*

**Chemistry**

In melting point determination, why shouldn't a substance be re-melted? (i.e. why should we not re-melt a substance that has previously been melted in a melting point tube?)
*October 17, 2010*

**English**

1) Minimize versus minimise. Which is UK English & which is US English? 2) After cleaning, all waste must be properly disposed of. Is this sentence acceptable?
*October 16, 2010*

**Comm/155**

I am trying to write a brief paragraph using five adverbs and five adjectives in describing my experience with credit and credit cards?
*October 12, 2010*

**chemistry**

A water containing 1x10^-4 mol CO2/L and having an alkalinity of 2.5x10^-4 eq/L has a pH of 6.7. The pH is to be raised to pH 8.3 with NaOH. How many moles of NaOH per liter of water are needed for this pH adjustment? (pK1=6.3 and pK2=10.3)
*October 12, 2010*

**Chemistry**

Is butyl paraben light sensitive?
*October 9, 2010*

**computers**

James was traveling for his job. The internet card provided by his company was not working and he had an important project due that day. James was in a small town about an hour away from the nearest internet kiosk, so he decided to drive around a nearby suburb to see if he ...
*September 30, 2010*

**accounting**

general ledger entry: sold $700 of merchandise (that had cost $220) on credit to Sam's Company.
*September 26, 2010*

**social studies**

what role did geography play in the economic success of new york
*September 24, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem? I'm sorry, I mean <,>,or =. Thank You for your help.
*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help. Your answer was no but how do I do this problem?
*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ? please help.
*September 22, 2010*

**math**

In this problem the letters x and y are each one digit numbers. Compare x+y O 19? Do I put any number for x and y ?
*September 22, 2010*

**physics**

A person leans over the side of a deep well and drops a stone that falls freely. After 1.0s she hears the splash of the stone striking the water at the bottom of the well. How deep is the well?
*September 21, 2010*

**math**

julie is thinking of an even number between 12 and 29 with digits whose difference is 7? what is the number?
*August 24, 2010*

**Axia Math 117**

I am of need of HELP. I am working on the word problems for AXIA math 117 and I do not understand the first problem. I have listed the information below. I have tried many times and I have not figured this out. My assignment is due tomorrow and I am desperate for help with ...
*August 6, 2010*

**Nutrition, Health, and Safety for Young Children **

What is a good purpose statement for discussing "why health, safety and nutrition strategies are important to identify and practice in an Early Childhood Education Program?
*July 18, 2010*

**Math**

Can someone please check this for mistakes please? y=4(x+3)-2x y=4x+3-2x y=2x+3 2x+3=y 2x=y-3 x=y/2-3 Hopefully I have rearranged the formula y=4(x+3)-2x to express x in terms of y.
*July 7, 2010*

**algebra2**

kathy bicyles 57 km/h faster than carlos. in the same time it takes carlos to bicyle 36 km. kathy can bicyle 57 km. how fast does each bicyclist travel? help please
*June 27, 2010*

**algebra2**

2 + 7 ______ xs power of 2 and x powqer of 2s
*June 27, 2010*

**algebra2**

the simlified product of this is? 10a power of 8.9r power of 4 _______ _____________ 3r power of 2 100a i dunno what to do?
*June 27, 2010*

**algebra2**

find the LCM 21z power of 7 and 63z power of 4? im not sure what im doing? help please?
*June 27, 2010*

**math**

Given the midpoint (8,14) and endpoint (-9,-1), find the other endpoint
*May 25, 2010*

**physics**

11.11....
*May 21, 2010*

**science**

how much heat does calcium oxide produce when dissolved in water?
*May 17, 2010*

**chemistry**

How much heat does calcium oxide produce when dissolved in water?
*May 17, 2010*

**Calculus **

Which vector is not collinear with vector a=[6,-4]? A: [3, -2] B: [-6, -4] C: [-6, 4] D: [-9, 6]
*May 8, 2010*

**math **

a boat crosses a river and arrives at a point on the opposite bank directly across from its starting position. The boat traveks at 4m/s and the current is 2m/s. If the river is 600 m wide in what direction must the boat steer and how long will it take to cross?
*May 5, 2010*

**Check Calculus**

What is the sum of 3 forces in equilibrium? Is it F3 = - (F1 + F2) or 0?
*May 4, 2010*

**Check Calculus**

What is the sum of 3 forces in equilibrium? Is it F3 = - (F1 + F2) or 0?
*May 4, 2010*

**chemisty **

what is the name of this substance K2Cro4
*May 2, 2010*

**trig**

please help me. use trig. identities to find the exact value. tan 25° + tan 5° / 1- tan 25° tan 5°
*April 30, 2010*

**trig**

please help me. use trig. identities to find the exact value. tan 25° + tan 5° / 1- tan 25° tan 5°
*April 30, 2010*

**math**

find real solution. 3+ the square root of 3x+1 = x
*April 27, 2010*

**business**

I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some thing else please help ...
*April 22, 2010*

**business ethics**

I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some thing else please help ...
*April 22, 2010*

**ethics in management**

I am trying to answer some question for class I am needing to find and understand these theories can someone please explain them or help me find information on them I cannot find anything that I understand searching for these terms are they called some thing else please help ...
*April 21, 2010*

**math**

how do i use the formula a=pe^rt to solve 15000. at 4.6% for 4yrs
*April 21, 2010*

**Calculus **

n(t) = 800/ (1 + 39e^-t) Where n is the number of students who have heard the rumour as a function of time, t, in days. What is the student population of the school? How long will it take for the rumour to reacglh half of the school's population? What dat was the rumour ...
*April 20, 2010*

**Calculus **

If log base a * b = 1/x and log base b * sq.rt a = 3x^2 show that x=1/6.
*April 20, 2010*

**Calculus **

Solve for x where 12^x = (4)8^2x
*April 20, 2010*

**Physic**

A person weighs 872 N in air and has a body fat percentage of 20.7%. a. What is the overall density of this person's body? b. What is the volume of this person's body? c. Find the apparent weight of this person when completely submerged in water.
*April 18, 2010*

**financing**

A firm has a current assets of $800,000, current liabilities of $600,000. The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction.
*April 18, 2010*

**Physics**

What weight of water is required to fill a 80 gallon aquarium? The answer must be in kN
*April 14, 2010*

**math/algebra**

solve by additon method, tell whether the equation is dependent,independent, or consistent. 1. x-y=3 -6x=6y=17 2. 3/7=5/9=27 1/9 = 2/7 =7
*April 5, 2010*

**Math**

x + y = 2.20 How do I solve this?
*March 28, 2010*

**chemistry**

a 1.009g mixture of the solid salts Na2SO4 and forms an aqueous solution with the precipitation of PbSO4. The precipitate was filtered and dried and its mass was determined to be .471 g. the limiting reactant was determined to be Na2SO4. Write the molecular form of the ...
*March 23, 2010*

**Chemistry**

A .972g sample of a Cacl2 2H2O/K2C2O4 H2O solid salt mixture is dissolved in 150 ml of deionized water, previously adjusted to a pH that is basic . The precipitate after having been filtered and air dried has a mass of .375g. what is the percent by mass of CaCl2 2H2O
*March 23, 2010*

**psychology paper**

Hello I have to write a paper and part of the paper is asking for information I am not sure which way to go if some one can please help me with this I would appreciate it the section I am having a problem with is Explain the criticism of artificiality in the discipline of ...
*March 23, 2010*

**Psychology**

Hello I to write a paper and part of the paper is asking for information I am not sure which way to go if some one can please help me with this I would appreciate it the section I am having a problem with is Explain the criticism of artificiality in the discipline of ...
*March 22, 2010*

**HRM240**

I have a paper due tonight be midnight is it possible to have someone write it in time?
*March 21, 2010*

**math**

What is the square inches of a 6" circle?
*March 4, 2010*

**8th Grade Math**

Draw and label a rectangle whose area is represented by the following expression; (x+1) (x+5). Then write an equivalent expression in expanded form. I have absolutly no clue how to do that. :/
*February 22, 2010*

**the facility**

003048
*February 22, 2010*

**Math **

What is the excluded value? y^2-y+5/y+4
*February 13, 2010*

**psychology**

What are the four positions of the nature of traits?
*February 12, 2010*

**phys 2**

Two capacitors are identical, except that one is filled with a dielectric ( = 4.50). The empty capacitor is connected to a 12.0 Volt battery. What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same ...
*February 4, 2010*