Thursday

May 5, 2016
Total # Posts: 62

**chemistry**

Determine the concentration of 20.0 mL of the sulphuric acid when 1.00 mol/L sodium hydroxide is used as the titrant. Observations: Initial volume of H2SO4 __________. Final volume of H2SO4 __________. Volume of H2SO4 added __________.
*April 28, 2016*

**math**

there are two supplementary angles, the difference between them is 44. I've tried many methods but can't seem to find the answer
*December 4, 2015*

**maths**

if the product of 2 rational no. is 25/42 and one of them is -20/7 find the othr
*June 24, 2015*

**math**

the cost of painting the circular traffic sign shown below is $3.50 per square foot.how much,to the nearest dollar,will it cost to paint the sign if its diameter measures 36 inches?
*May 13, 2015*

**maths**

three resistors are connected the resistances are R2 = 2 R3= 3 R1=r r is not specified Question: Derive the total resistance of the system as an expression containing r
*March 29, 2015*

**math**

simplify (9-m^2)7m^3 / (3-m)14m please help i am stuck
*March 29, 2015*

**math**

i dont give a duk
*February 16, 2014*

**math**

5/12 + 2/5 = 25/60 + 24/60 = 49/60 60/60 - 49/60 = ?
*February 16, 2014*

**math**

11/60
*January 15, 2014*

**math**

the temperature at 12 noon was 10 degree Celsius above 0.decrease at the rate of 2 degree Celsius per hour until midnight at what time would temperature be 8 degree Celsius below zero? what would be temperature at mid-night?
*July 2, 2013*

**maths**

A wall 24m long, 0.4m thick and 6m high is constructed with the bricks each of dimensions 25cm X 16cm X 10cm. If the mortar occupies 1/10th of the volume of the wall, then find the number of bricks used in constructing the wall.
*December 16, 2012*

**physics**

calculate the electric flux through the curved surface and base of a right hollow cone of height h and base radius r when charge q is placed at its vertex?
*November 6, 2012*

**s.s.**

"unemployment leads to wastage of man power resource" justifythe statement with suitable examples.
*October 15, 2012*

**s.s.**

who was the leader of the jacobin club?state any four laws indroduced by him
*October 15, 2012*

**s.s.**

explian the process of slavery abolition in france.
*October 15, 2012*

**s.s.**

what is meant by "people as resorce" ?explain how is human resource diffrent from other resorces like land and physical capital?
*October 15, 2012*

**s.s.**

what made pinochet unpopular in chile?
*October 15, 2012*

**s.s.**

state the three demands of lenin's april theses?
*October 15, 2012*

**social study**

explian any three factor which lead to the incident known as bloody sunday
*October 15, 2012*

**s.s.**

who is pinochet
*October 15, 2012*

**Chemistry(Please help)**

If your answer is in J then multiply -431.16 by thousand and you delta S .12529. Make sure all your unit are in J/mol K and Temperature in K.
*April 25, 2012*

**physics**

(60 kg)(9.8 m/S^2) = Force in Newton
*April 25, 2012*

**Spanish**

Prefiero usar una guía para que no me pierda. (Pierda should be subjunctive since 'para que' triggers subjunctive)
*April 25, 2012*

**Spanish**

Looks good!
*April 25, 2012*

**Physics**

Two copper blocks, each of mass 2.12 kg, initially have different temperatures,t1 = 18° C and t2 = 26° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings (a) Find the final temperature of the blocks ...
*April 25, 2012*

**Physics**

(a) Find the final temperature of the blocks Find the heat transferred between them. (b) Find the entropy change of each block during the time interval in which the first joule of heat flows. Delta S1= Delta S2= (c) Estimate the entropy change of each block after it has ...
*April 25, 2012*

**Physics**

Two copper blocks, each of mass 2.03 kg, initially have different temperatures,t1 = 15° C and t2 = 30° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings.
*April 25, 2012*

**Physics**

A uniform rectangular sign of width 51.6 cm, height 25.2 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge.
*April 24, 2012*

**chemistry**

Mg + 2HNO3 = Mg(NO3)2 + H2
*April 24, 2012*

**Spanish**

I think you are saying i know how to play in a team.
*April 24, 2012*

**Physics**

A 2.20 kg mass attached to a spring oscillates with a period of 0.440 s and an amplitude of 16.5 cm. (a) Find the total mechanical energy of the system (b) Find the maximum speed of the mass
*April 24, 2012*

**College Chemistry**

Answer 12.93g
*March 26, 2012*

**College Chemistry**

50.67 divided into 55.75= .9889 Ans: 90.89%
*March 26, 2012*

**chemistry**

If 0.0418 grams of Mg are reacted with excess HCl, how many moles of hydrogen gas will be formed?
*March 19, 2012*

**math**

the white team lost 2/5 of all its games and won 39 games. how many games did they play? show and explain your work.
*January 19, 2012*

**science**

scientific name of flower lotus?
*December 16, 2010*

**Algebra I**

The expression 2(l+w) may be used to find the perimeter of a rectangle. What are the length and width of a rectangle if the area is 13 1/2 square units and the length of one side is 1/5 the measure of the perimeter?
*August 29, 2010*

**math**

after ploting graph for h = 1.1 + 7t - 5t^2 for interval t = 0 to t = 2. i catch a ball again when it is at height at 1.1m given the velocity of ball v in m/s given by v = 7 - 10t, find the speed of the ball when it reaches my hand.
*April 13, 2010*

**math**

after ploting the graph for y=1.55x+30 and y=2.75X where the cost y (£) as a function of the total number for swims x for the two options (member and non member) but question is what do the gradients and y intercepts of the lines represent in terms of the situation being...
*April 13, 2010*

**math**

sorted thanks
*April 13, 2010*

**math**

how do you solve quadratic equation 7t-5t^2 = 0 on ti-83 graphic calculator
*April 9, 2010*

**math**

plot graph for y = 1.55x +30 and y= 2.75x where y (£)as a function of the total number of swim x, for the option( member and non-member)what are the approx. coordinates and and what does it represent.
*April 9, 2010*

**Chemistry please help!**

On step 3 you divide by 2 not multiply.
*February 22, 2010*

**Math**

Jane lives in Middleton, where the tax rate is 2.9%. Her property is assessed at $89,000. What is her tax? Find the total tax deductions for each of the following weekly paychecks. weekly pay $98.00 $240.00 $150.00 FICA (7.65) ? ? ? Which item is more economical? 1. a $100,000...
*January 12, 2010*

**Bible Work**

The heathen are without excuse because? A. Nature Reveals God B. Men Rejected God when they knew him C. Men prefer sin to God D. all of these I think it is D
*January 11, 2010*

**language**

charactistics of mahatma gandhi
*January 4, 2010*

**math-help**

This sounds dumb but do I take 1000-231.05 or 231.05- 1000 If I do it on a calculator I get 768.95, if I set it up with 231.05 on top and the 1000 on the bottom I get 221.05. Something doesn't seem right.
*January 5, 2009*

**math-help**

The person in the word problem wants to run a total of 1000 miles in a year and within a 2 month process she ran a total of 231.05 miles, so now they are asking how many more miles she has to run in the year to reach her goal of 1000 miles. So I think I should subtract 231.05 ...
*January 5, 2009*

**2 math questions**

I mean separately entered already
*January 5, 2009*

**2 math questions**

They were below, listed separately
*January 5, 2009*

**2 math questions**

Can anyone help?
*January 5, 2009*

**math**

Thank you!
*January 5, 2009*

**math**

Okay so .300 is equivalent to .3, but 1 tenth is not equivalent to .01? Thanks so much.
*January 5, 2009*

**math**

Thank you, how about 1 tenth compared to .01 ?
*January 5, 2009*

**math**

can you tell me is .300 equivalent to .3 ?
*January 5, 2009*

**math**

So I would get 768.50 if I did it on a caluclator, but on paper, if i put 1000 on top, how do I align the 231.50 ?
*January 5, 2009*

**math**

Well the person in the word problem wants to run a total of 1000 miles in a year and within a 2 month process she ran a total of 231.05, so now they are asking how many more miles she has to run in the year to reach her goal of 1000 miles. So I think I should subtract 231.05 ...
*January 5, 2009*

**math**

Can you please tell me what you get when you subtract 1000 miles from 231.05 miles. Thanks!
*January 5, 2009*

**math**

Can you please tell me what do you get when you subtract 1000 miles from 231.05 miles?
*January 5, 2009*

**Statistics**

43c2/100c2 = 0.182
*December 12, 2008*

**computer software**

help me
*March 18, 2008*

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