Tuesday

February 9, 2016
Total # Posts: 706

**Another caffeine from tea question**

Thanks Dr. For our intents and purposes I don't believe there to be a reaction. Thank you for your awesome help all the same!
*November 29, 2008*

**Another caffeine from tea question**

Can anyone show me the reaction of sodium carbonate with water to produce bicarbonate and hydroxide as sodium carbonate dissolves? And if any, what is the reaction of tannins and caffeine with this solution? Thanks loads!
*November 29, 2008*

**Chemistry**

I found an interactive model for Lithium when doing a project on Lithium Carbonate etc in class. I was able to incorporate it into a Powerpoint presentation. Somewhere online you may be able to download a file for this. I can hunt down the website that offered some downloads ...
*November 29, 2008*

**English- vocab**

How about unexplicable?
*November 28, 2008*

**Biochemistry**

Thanks for the help! It is much clearer to me.
*November 26, 2008*

**Biochemistry**

Is there a reaction between Na2SO4 with Ch2Cl2? We did a caffeine extraction from tea bags and we are asked why the Na2So4 was added (to remove water I learned) and if a reaction took place. Can someone help? Thanks!
*November 26, 2008*

**St. Peter and Paul**

What do you grease to prevent friction
*November 19, 2008*

**General Physics**

thanks but I know that there are three unknowns and three equations. Getting the formulas are the difficult part.
*October 30, 2008*

**General Physics**

A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to rebound at an angle è'2 = 45° from the neutron's initial direction. The neutron's initial speed is 6....
*October 30, 2008*

**Philosophy**

Create a political campaign ad (a poster, a flier, etc.) for two political parties: one party that supports traditional moral and political philosophies and another party that supports modern moral and political philosophies (modern vs. traditional understood in terms of ch. ...
*October 17, 2008*

**11th grade math algebra 2 trig**

5>4b+9>17 - -
*October 9, 2008*

**math**

how to find the "range" of a set of numbers
*September 30, 2008*

**Calculus - Derivatives**

If the original estimate was done by LEFT then the error is inversely proportional to the number of steps and the n = 30 error is (10/30) * -1.654 = -.551, approximately. So the estimate for n = 30 would be -.551 + 4.000 = 3.449 If the original estimate was done by TRAP then ...
*September 29, 2008*

**Physics**

Two packing crates of masses m1 = 10.0 kg and m2 = 6.50 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 6.50 kg crate lies on a smooth incline of angle 39.0°. a)Find the acceleration of the 6.50 kg crate. m/s2 (up the ...
*September 24, 2008*

**Chemistry-Question 4**

What mass (g) of the solute C3H8O3 should be mixed with 8270 mL of the solvent H2O to produce a solution that is 1.02 m glycerol. Molar Mass (g/mol) C3H8O3 92.09 H2O 18.015 Density (kg/L): C3H8O3 1.261 H2O 0.9982 Name/Formula: glycerol C3H8O3 water H2O
*September 2, 2008*

**Chemistry-Question 3**

A 4.86 kg sample of a solution of the solute chloroform in the solvent (C2H5)2O that has a concentration of 1.91 pph by mass chloroform is available. Calculate the amount (g) of CHCl3 that is present in the sample. Molar Mass (g/mol) CHCl3 119.38 (C2H5)2O 74.12 Density (g/mL...
*September 2, 2008*

**Chemistry**

A solution of hexane in the solvent (CH3)2CO has a mole fraction of CH3(CH2)4CH3 of 0.114. What mass (g) of the solution must be taken if 1690 g of hexane is needed? Molar Mass (g/mol) CH3(CH2)4CH3 100.21 (CH3)2CO 58.05 Density (kg/L): CH3(CH2)4CH3 0.6838 (CH3)2CO 0.7899 Name/...
*September 2, 2008*

**Chemistry**

Here is the other information.. Molar Mass (g/mol) CH3CN 41.05 C6H6 78.12 Density (kg/m3): CH3CN 785.7 C6H6 878.6 Name/Formula: acetonitrile CH3CN benzene C6H6
*September 2, 2008*

**Chemistry**

What volume (mL) of the solvent benzene should be added to 142 mL of the solute CH3CN to generate a solution that is 2.68% by mass CH3CN?
*September 2, 2008*

**statistics**

I thought that 95% was most common. My problem is finding statistical models that do not involve means and other nonpertinent functions.
*August 12, 2008*

**mathematics**

I am trying to prove that the second half of two part names determines the gender of the whole name in a Romance language. I have 30 second parts used only by males in my population and 5 only by females, with one used by both. It seems that I could reject the nul hypothesis ...
*August 12, 2008*

**arithmetic**

You buy a square lot that is 154 yd on each side. What is its size in acres?
*June 28, 2008*

**Math**

Complete the statement. (Round to the nearest hundredth.) 2.1 kg = ________ oz
*June 24, 2008*

**Finance Management**

prefered stock
*June 15, 2008*

**algebra**

multiplying square roots
*May 27, 2008*

**Bussiness**

In what way is each of the following a marketing activity? a. The provision of sufficient parking space for customers at a suburban shopping mall b. The purchase by clothing store of seven dozen sweaters in assorted sizes and colors c. The inclusion of a longer and more ...
*May 14, 2008*

**Humanities**

Throughout the Dark Ages Christians believed in a geocentric universe and such was taught as official Church doctrine, as seen in Dante's works, yet this view had come from a Greek (a pagan) who lived a long time ago. Name the Greek.
*April 24, 2008*

**math**

given that R= 2p(squared) divided by Q-3 1)Calculate the value of R when P=6 and Q=12. 2)rearrange the formula to make Q the subject.
*April 7, 2008*

**Discount Notes**

Ron Prentice bought goods from shelly katz. on may 8, shelly gave ron a time extension on his bill by accepting a 3000.00, 8%, 180-day note. on august 16 shelly discounted the note at roseville bank at 9%. What proceeds does shelly katz receive? We are using 360 for the day
*March 16, 2008*

**Discount Notes**

The September 2003 issue of money stated that intrest rates have climbed to 5.99%. Nancy Martin, owner of Martins Textile Manfacturing, Supplied Dolan Limited with clothing worth 7353.00. The Terms of sale were 180-days and 5.4% intrest. Dolan Limited took possession of the ...
*March 16, 2008*

**Discount Note**

On September 5, Sheffield company discounted at sunshine bank a 9000.00 Maturity value, 120-day note dated June 5, shushines discount rate was 9%. What proceeds did sheffield company receive? Use the 360 days
*March 16, 2008*

**Promissory notes**

Hafers, an electrical supply company, sold 4800.00 of equipment to Jim Coates Wing, INC Coates signed a promissory note May 12 with 4.5% intrest. The due date was August 10. Short of funds, Hafers contacted Charter One Bank on July 20th the bank agreed to take over the note at...
*March 16, 2008*

**Promissory notes**

On May 12, Scott Rinse accepted an 8000.00, 12%, 90-day note for a time extension of a bill for goods bought by Ron Prentice. On June 12, Scott discounted the note at Able Bank at 10%. What proceeds will Hafers Receive? Please use 360 and not 365
*March 16, 2008*

**Promissory notes**

Rex corporation accepted a 5000.00, 8%, 120-day dated August 8 from Regis company in settlement of a past bill. On October 11, Rex discounted the note at Park Bank at 9%. What are the notes Maturity value, Discount Period, and bank discount? What proceeds does Rex receive? ...
*March 16, 2008*

**Promissory notes**

Ron Prentice bought a goods from Shelly Katz. On May 8, Shelly gave Ron a time extension on his bill by accepting a 3000.00, 8%, 180-day note. On August 16, Shelly discounted the note at Roseville Bank at 9%. What proceeds does Shelly Receive? Please use 360 days and not 365
*March 16, 2008*

**Promissory notes**

Annika Scholten bought a 10,000.00, 13-week treasury bill at 5%. What is her effective rate? Round to the nearest hundredth percent. use 360 days and not 365
*March 16, 2008*

**Promissory Notes**

The September 2003 issue of money stated that intrest rate have climbed to 5.99%. Nancy Martin, owner of Martins textile Manufacturing, supplied Dolan Limited with clothing worth 7353.00. The terms of sale were 180 days and 5.4% intrest. Dolan Limited took possession of the ...
*March 16, 2008*

**Promissory Notes**

On september 5 Sheffield company discounted at Sunshine bank a 9000.00 (maturity value), 120-days note dated June 5th. Sunshines discounted rate was 9%. What proceeds did sheffield company receive?
*March 16, 2008*

**Promissory Notes**

On September 5th, Sheffield Company discounted at Sunshine Bank a 9000.00 (maturity value), 120-day note dated June 5th. Sunshine's discount rate was 9%. What proceeds did sheffield company receive. We are using 360 day and NOT 365
*March 15, 2008*

**Promissory Notes**

we are using 360 would this still be right the way you fugured it
*March 15, 2008*

**Promissory Notes**

On September 5, Sheffield Company Discounted at Sunshine Bank a 9000.00 (maturity value), 120-day note dated June 5th Sunshine's discounted rate was 9%. What proceeds did Sheffield Company Receive?
*March 15, 2008*

**Discount Notes**

that would help
*March 15, 2008*

**Discount Notes**

Annika Scholten bought a 10000.00,13-week Treasury bill at 5%. What is her effective rate? Round to the nearest hundredth percent
*March 15, 2008*

**Discount Notes**

the back of the book came up with 8937.00 and i came up with 8730.03
*March 15, 2008*

**Discount Notes**

well i figured it out here but i dont have the same answere as the back of the book
*March 15, 2008*

**Discount Notes**

On september 5, sheffield company discounted at Sunshine bank a 9000.00 (Maturity Value), 120-day note dated June 5, Shunshine's discount rate was 9% What proceeds did sheffield company receive
*March 15, 2008*

**Discount Notes**

On september 5, sheffield company discounted at Sunshine bank a 9000.00 (Maturity Value), 120-day note dated June 5, Shunshine's discount rate was 9% What proceeds did sheffield company receive
*March 15, 2008*

**Discount Note**

The September 2003 issue of money stated that intrest rates have climbed to 5.99% Nancy Martin, owner of Martins Textile Manfacturing, supplied Dolan Limited with clothing worth 7353.00 The terms of sale were 180 days and 5.4% intrest. Dolan Limited took possession of the ...
*March 15, 2008*

**Promissory notes**

Jack signed a 9000.00 note at fleet bank. Fleet chared a 9 1/4% discount rate. If the loan is for 200 days, find A) the proceeds and B) the effective rate charged b the bank. (to the nearest tenth percent
*March 12, 2008*

**Promissory notes**

I thought that it was 8000 x .05 x .5000 and that would have been 200
*March 12, 2008*

**Promissory notes**

Bernie borrowed 8,000.00 for 180 days from lion bank. The bank discounted the note at 5% A) what proceeds does Bernie Receive? B) Calculate the effective rate to the nearest hundredth percent.
*March 12, 2008*

**Intrest problem**

Abe Wolf bought a new kitchen set at sears. Abe paid off the loan after 60 days with an intrest change of 9 dollars. If sears charges 10% interest, what did Abe pay for the Kitchen set Assume 360 days
*March 8, 2008*

**Intrest Problem**

thanks that is what i got here as well I have another one to post i dotn understand as well
*March 8, 2008*

**Intrest Problem**

Carol Miller went to Europe and forgot to pay her 740.00 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penalty of 15 dollars. What was the rate of intrest charged by the bank? Round to the nearest hundreth ...
*March 8, 2008*

**Intrest Problem**

US rule is using 360 days and not 365
*March 8, 2008*

**Intrest Problem**

Shawn Bixby borrowed 17000.00 on a 120-day, 12% note. After 65 days, Shawn paid 2000.00 on the note. On day 89, Shawn paid an additional 4000.00. What is the final balance due? Determine total intrest and ending balance due by the U.S. Rule. Use ordinary intrest
*March 8, 2008*

**simple intrest**

This is what the problem says and that is all the information i have from the book
*March 8, 2008*

**simple intrest**

Carol Miller went to Europe and forgot to pay her 740 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penality of 15 dollars. What was the rate of intrest charged by the bank? Round to the nearest hundredth ...
*March 8, 2008*

**simple intrest**

I am not understanding this here still. I have figured out that D=136 and the intrest is = 293.75
*March 8, 2008*

**simple intrest**

I think the answere is 110.99
*March 8, 2008*

**simple intrest**

ON September 14th Jennifer Rick went to a park bank to borrow 2500.00 at 11 3/4 intrest. Jennifer plans to repay the loan on January 27th Assume the loan is on the ordinary intrest. What intrest will Jennifer own on Jan 27th What is the total amount Jennifer must repay at ...
*March 8, 2008*

**Simple Intrest**

ON September 14th Jennifer Rick went to a park bank to borrow 2500.00 at 11 3/4 intrest. Jennifer plans to repay the loan on January 27th Assume the loan is on the ordinary intrest. What intrest will Jennifer own on Jan 27th What is the total amount Jennifer must repay at ...
*March 8, 2008*

**Intrest**

Carol Miller went to Europe and forgot to pay her 740 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penality of 15 dollars. What was the rate of intrest charged by the bank? Round to the nearest hundredth ...
*March 8, 2008*

**Intrest**

On Sept 14 Jennifer Rick went to park bank to borrow 2500.00 at 11 3/4 intrest. Jennifer plans to repay the loan on Janauary 27th Assume the loan is on ordinary intrest. What intrest will Jennifer owe on January 27th What is the total amount Jennifer must repay at Maturity
*March 8, 2008*

**Simple intrest**

Shawn Bixby borrowed 17000.00 on a 120 day, 12% note. After 65 days, Shawn paid 2000.00 on the note. On day 89 Shawn paid an additional 4000.00 What is the final balance due? Determine total intrest and ending balance due by the U.S. Rule. Use ordinary intrest
*March 8, 2008*

**Simple intrest**

Bill Moore is buying a van. His April Monthly intrest at 12% was $125.00 What was Bills principal balance at the beginning of April Uese 360 days
*March 8, 2008*

**PreCal**

Write a formula for the general term(the nth term)of the arithmetic sequence. Do not use a recursion formula. Then use the formula for a(n) to find the indicated term of the sequence Find a(11); 12, 10, 8, ... I came up with -10 ?
*December 18, 2007*

**math calculus**

Find the are under the given curve y=square root of x + 1 from x=0 to x=9 Please walk me through each step.
*December 2, 2007*

**math calculus**

ln (8) - ln (2) = ln (4) How is this possible
*December 2, 2007*

**math calculus**

Please explain how it is (ln 4) ¡Ò^8 2 x^-1 dx= (ln 8) ¨C (ln 2) =(ln 4)
*December 2, 2007*

**intergrated physics and chemistry**

Work is expressed by- Fd
*November 29, 2007*

**math**

Please help me solve the following. Thanks, Write m^p = q using logarithms. Solve (1/e)^2x = 14
*November 28, 2007*

**math-check my work**

Differentiate y=x(x4+5)3 d/dx = [x(x4+5)3] d/dx = [f(x)g(x)] = f(x)g’(x)+g(x)f’(x) d/dx = [x(x4+5)3] = x • d/dx (x4+5)3 + (x4+5)3 • d/dx x g’(x) = d/dx (x4+5)3 = 3(x4+5)2 • 4x f’(x) = d/dx (x) = 1 = (x) • 3(x4+5)2 • 4x + (x4+5)3 &#...
*November 23, 2007*

**physical science**

How do you calculate the heat generated from dropping a metal ball from heights?
*November 21, 2007*

**Math**

How do I mutliply the following; (4x2+3x-3)(4x2+3x-3)
*November 12, 2007*

**Science**

In the winter are you letting the cold air in or the warm air out when you open the door
*November 9, 2007*

**Science**

I want to know why the rain is cold.
*October 23, 2007*

**english**

Mardiuk shoots Tiamat through the heart in the enuma elish. What is the symbolisim of shooting Tiamat through the heart with evil?
*September 30, 2007*

**english**

Our task was to read the Enuma Elish and answer the following questions: Where does evil come from in this myth, and how is it symbolized? Is the defeat of evil final and total? Does evil have any good qualities?
*September 30, 2007*

**Social Studies**

Were there specific historic contributions that were unique to each of the follindian Native American Indian tribes? Plateau, Northeast Woodland and Southeast Woodland Indians My textbook doesn't give that information to me. I was told by my teacher to look online, but I ...
*September 27, 2007*

**Social Studies**

What specific items were used by the Plateau, Northeast Woodland and Southeast Woodland Indians to barter with? My book doesn't give that information to me. I was told by my teacher to look online, but I have searched everywhere, and can't find the answer. Thank you so...
*September 27, 2007*

**Social Studies**

My book doesn't give that information to me. I was told by my teacher to look online, but I have searched everywhere, and can't find the answer. Thank you so much for your help! I don't know where to look!
*September 27, 2007*

**Social Studies**

Were there specific contributions that were unique to each indian tribe? Thank you
*September 27, 2007*

**Social Studies**

What kind of contribution to society did the Plateau (California Inter-Mountain), Northeast Woodland and Southeast Woodland Indians make to history? Thank you!
*September 27, 2007*

**Social Studies**

Yes, I believe they did. But do you know what items each Native American group bartered with? Thank you!
*September 27, 2007*

**Social Studies**

What was the system of economy for the Plateau, Northeast Woodland and Southeast Woodland Indians? Thank you
*September 27, 2007*

**Physics**

the acceleration is 0.31 m/s2
*September 23, 2007*

**Physics**

If a cart and rider are pulled with a constant force of 74.0 N, and the friction force is 29.0 N, how fast will the cart and rider be traveling after 8.70 seconds? Thanks a lot!
*September 23, 2007*

**math**

First, you need to combine like terms. 4x=480 Then, divide each side by 4. 4x/4=480/4 4's on the left side cancel out, leaving: x=120 Adults(3x):360 Students(x):120
*August 9, 2007*

**Algebra**

Simplify rt= 1/[(1/r1)+ (1/r2)] That looks like the formula for the "total" resistance, rt, of two resistors in parallel, r1 and r2. The t, 1 and 2 are subscripts. It cannot be made much simpler than that, but it can be rewritten 1/rt = 1/r1 + 1/r2 which is a bit ...
*August 2, 2007*

**Algebra**

Simplify r=1/(1/x+1/y) multiply the right side by xy/xy
*August 2, 2007*

**Algebra**

Simplify 1/r=1/x+1/y Multiply both sides by rxy. Then simplify. I will be happy to check your work. That is as compact and simple as the relationship can be written. Are you looking for an explicit formula for x, y or r?
*August 2, 2007*

**Algebra**

Find all positive values for k for which each of the following can be factored. X^2-x-k (Your answer seems to be the same as the other problem x^2+x-k ) Is this correct too? Consider your equation to be in the form ax^2 + bx = c = 0. It can be factored (that is, have real ...
*July 23, 2007*

**Algebra**

Find all positive values for k for which each of the following can be factored. X^2-x-k Using the quadratic equation, x= 1/2 +-1/2* sqrt (1+4k) Now, the sqrt has to be of a positive number, so 1+4k>0 so any value of k>-1/4 should work.
*July 23, 2007*

**distance formula**

Hey thanks, stupid negative..... Ok now I'm trying to figure out the distance formula. the coordinates are (-1,3) and (2,5) So I take (5-3)^2 + (2-1)^2 and get 2^2 + 1^2. so 4 + 1 is 5. so the square root of 5 is the answer? your second subtraction is wrong it should be (2...
*July 19, 2007*

**math problem**

I'm trying to get a handle on what square roots are (I think thats what they are called). Here is an example. 4(almost like a division sign but it is more like a check mark)3. I don't understand what it is, its a square root? and How do I deal with these things? A ...
*July 19, 2007*

**Circles.**

Ok I'm trying to find the radius of a circle with the given measurement. 4/5C=17 C stands for Circumference. Solve for C (multiply both sides by 5/4) Then, solve for radius R= C/2PI
*July 19, 2007*

**Math**

How do I figure out the height of a triangle? The height of a triangle is defined as the perpendicular distance from an angle to a side. Now, since this is a right triangle, and depending on how it is situated, the height could be 10" or 12" if you observe from the ...
*July 18, 2007*

**History**

yeah i have seen that but it doesnt label the borders so i dont know what they are or the river names and stuff like that i have been looking all over the web to finish a wrting i am doing about the roman empire and i need to know what the boundaries were of it in 44 bc the ...
*April 24, 2007*

**Environmental Science**

b. salt water is correct
*April 20, 2007*