Saturday

January 31, 2015

January 31, 2015

Total # Posts: 229

**Science**

Engineering Science Project ideas and some thing cool interesting and new not that has been popular as a science project!!!!!!!!!!!!! Plz!!!!!!!!!!!!!!
*January 24, 2010*

**Algebra 1**

hey
*December 12, 2009*

**chemistry**

The reaction between 0.0272 g of Mg with an excess of water was carried out in an ice calorimeter. The volume of water decreased by 0.19 mL during the reaction. a) Write the equation that occurs. Is it a redox? b) Calculate the enthalpy of reaction? i have no clue how to ...
*November 15, 2009*

**chemistry**

please do not post questions that involve quiz questions from mc master univeristy
*November 8, 2009*

**chemistry**

The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH-(aq)? Mn(OH)2(s) + MnO4-(aq) = MnO42-(aq). 1. ) 2 2. ) 3 3. ) 4 4. ) 6 5. ) 8 the answer i got was 6...but im no 100% sure :S
*November 8, 2009*

**math**

arithmetic sequence b_n=(-2)^(n-1)
*October 25, 2009*

**ALGEBRA**

If a car is traveling at 24 meters per second, at how many kilometers per is it traveling?
*September 17, 2009*

**Government.**

The levl of the nation's debt is: A. Limited by the constitution. B. Always limited by Congress. C. Is not limited by any goverment branch. D. Is not to exceed 10 billion. I know it's not A because my books says that there are no Constitutional limits. I know it's ...
*April 8, 2009*

**physics**

points A {at(2,3)m} and B {at(5,7)m} are in a region where the electric field is uniform and given by vector E=(4i+3j) N/C. What is the potential difference Va-Vb in volts? a. 23 b. 27 c. 30 d. 24 e. 11 i think the formula may be ds=dxi+dyi but even with that im not sure how ...
*April 6, 2009*

**Math Algebra**

I’m working on factoring trinomials of the form ax2 + bx + c & perfect square trinomials. This chapter explains that a further method will be needed to conduct a trial and check process, in which the middle term is the sum of the products. Here’s the problem as ...
*April 1, 2009*

**Algebra**

Find the accumulated value of an investment of $700 at 16%compounded quarterly for 2 years.
*March 4, 2009*

**math (unanswered, previously posted)**

A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each of the telephone users of A were to be guaranteed instant access to make calls to B, 2000 telephone lines would be needed. This would be rather ...
*March 1, 2009*

**math**

33/100
*March 1, 2009*

**Statistics**

Yes please. I think I hit the refresh button while posting. Sorry. Would love to work with you on getting some hints on getting this done.
*March 1, 2009*

**Statistics**

A set of telephone lines is to be installed so as to connect between town A and town B. The town A has 2000 telephones. If each of the telephone users of A were to be guaranteed instant access to make calls to B, 2000 telephone lines would be needed. This would be rather ...
*March 1, 2009*

**vocabulary**

TRAILBLAZERS
*October 23, 2008*

**math**

Hey, could I have some help for this? Thanks! Describe a rule for deciding if a number is divisible by three. Consider numbers above 1000 as well.
*September 16, 2008*

**Math**

I need some help please Determine the least four digit number that is divisible by 2,3, and 5. Explain your reasoning. Explain how you know that 123 123 123 900 is divisible by 2,3,5,9, and 10. How do you know that it is also divisible by 6.
*September 16, 2008*

**Social Studies**

What is Cultural Diversity and why is Cultural Diversity necessary in the first place?
*May 7, 2008*

**Science**

What is an example of a solid and a liquid solution
*January 8, 2008*

**Math- Fractions**

fr
*November 19, 2007*

**math**

I need help with partial differences method.
*October 23, 2007*

**Math (typo in first)**

How do I go about tackling this problem? (I made a problem-modifying typo in the first) The American Medical Association wishes to determine the percentage of obstetricians who are considering leaving the profession becaose of the rapidly increasing number of lawsuits against ...
*April 29, 2007*

**Math (Statistics)**

How do I go about tackling this problem? The American Medical Association wishes to determine the percentage of obstetricians who are considering leaving the profession becaose of the rapidly increasing number of lawsuits against obstetricians. How large a sample should be ...
*April 29, 2007*

**Social Studies**

During the cold war, the soviet union and the democracies in the west competerd for influrence in the middle east beacuse of its 1. strategic location and valuable resources. 2. vast fertile farmlands and rivers 3. large well-educated population 4. industrial potential 2 is ...
*April 18, 2007*

**Maths**

Solve this equation fo rx in the interval 0<=x<=360 3sinxtanx=8 I would do it this way: sinxtanx = 8/3 sinx(sinx/cosx)=8/3 sin^2x/cosx = 8/3 (1-cos^2x)/cosx=8/3 cross-multiply 3 - 3cos^2x = 8cosx 3cos^2x + 8cosx - 3 = 0 (3cosx-1)(cosx+3)=0 cosx=1/3 or cosx = -3 the last ...
*April 11, 2007*

**Math**

hollis is paying off 2 student loans. One loan charges 7% interest, per year. The other loan charges 9 % interest per year. He owes $1500 more on the 7% loan than he does on the other. Last year he paid a total of $617.00 in interest. what does he owe on each loan what is 2,...
*April 8, 2007*

**Chemistry**

Why is the freezing point depression of potassium ethanoate greater than that of camphor or urea (in benzoic acid), with equal moles of each? Wouldn't the Kethanoate break up into two ions per molecule?
*February 10, 2007*

**Physics Question......many thanks**

why is it 1/50??
*January 15, 2007*