Curtis
Most popular questions and responses by Curtis
Chemistry
I need to know if I am anywhere in solving this problem: Please tell me if this is correct. The pH of a solution: 0.20 M CH3COOH and 0.10 M CH3COONa pH=pKa+log{[CH3COONa]/[CH3COOH]} pH= log(1.8x105)+log{0.10/0.20} pH= 4.74+log 0.50= 4.740.30= 4.44
asked on May 6, 2010 
Geometry
Isosceles triangle ABE of area 100 square inches is cut by CD into an isosceles trapezoid and a smaller isosceles triangle. The area of the trapezoid is 75 square inches. If the altitude of triangle ABE from A is 20 inches, what is the number of inches in
asked on July 9, 2017 
math
You play video games online. When you sign up with the game site, you get 400 points. You earn 50 more points for each hour that you play. How many hours do you have to play to get to 1,000 points
asked on April 23, 2019 
Business Communication
Summarize the 3x3 writing process and explain how it guides a writer
asked on November 10, 2014 
chemistry
A buffer solution contains 0.283 M hypochlorous acid and 0.456 M potassium hypochlorite. If 0.0464 moles of perchloric acid are added to 225 ml of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon
asked on July 2, 2014 
Analy Chem
Consider the titration of 100.0 mL of 0.110 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va:Va = 0,2,5,8,10,10.1,11,11.1, and 12mL. Compute Ve, first.
asked on April 11, 2012 
Physics
Wind is blowing toward south at 8m/s, a runner jogs west at 7 m/s. What is the velocity (speed and direction) of the air relative to the runner?
asked on February 2, 2014 
chemistry
What is the pH of a solution that is 0.20 M CH3COOH and 0.10 M CH3COONa?
asked on May 4, 2010 
chemistry
At room temperature the equilibrium constant Kc for the reaction: 2NO(g)=N2(g)+O2(g) is 1.4x10^30. In the atmosphere at room temp. the concentration of nitrogen gas is 0.33 mol/L and the concentration of oxygen gas is about 25% that value. Calculate the
asked on April 8, 2010 
CT
I need help identifying the following things in the article. 1. Identify any examples of bias presented by the author. 2. Identify any areas that are vague or ambiguous. 3. Do you find the source credible? 4. Identify and name any rhetorical devices used
asked on May 28, 2008 
Chemistry II
The equlibrium constant Kc for the reaction: has the value of 4.00 at 500K. If a mixture of 1.00 mol CO and 1.00 mol H2O is allowed to reach equilibrium at this temperature in a 1.00L flask, calculate the equilibrium concentrations of each species in the
asked on April 11, 2010 
Math Algebra 2
Mr. Mullett has designed a playground for his 4 kids. This playground is awesome. The playground equipment is top of the line, multiple slides, swings, climbing wall and the playground area also includes a trampoline. What he doesnâ€™t have is a sidewalk
asked on September 3, 2012 
Math
the banks contains quarters , dime and nickels. The number of dimes is 1 less than the number of nickels. The number of nickels is 2 more than twice the number of quarters. The coins are worth $5.70. How many nickels are there?
asked on October 30, 2011 
yr7 english
in the sentence The Eiffel Tower is in France is it right to put a capital letter for tower? thanks
asked on February 9, 2009 
Math
A banner has the length of 10 feet and the area of 7 square feet what is the width of the banner
asked on January 7, 2016 
math
Anna uses 4/5 of vinegar in her salad dressing recipe.How much vinegar would Anna use to make 2 recipes?
asked on December 3, 2013 
Math
x^2 + 5x 10= 0 has 2 solutions A and B where A < B and A = ? and B = ?
asked on September 4, 2012 
Geometry
Finish pattern George John Thomas John
asked on August 13, 2012 
Math Question
What is the probability that at least two(2) of the nine(9) US Supreme Court Justices have the same birth date (month and day)?
asked on September 21, 2011 
algebra
(1/(1+x))+(1/x) Factor
asked on April 7, 2011 
Math
404k to the powerr of 3 for k=2
asked on March 23, 2016 
Algebra 2
An object 3.6 feet tall casts a shadow that is 10.8 feet long. How long in feet would the shadow be for an object which is 13.2 feet tall?
asked on July 30, 2014 
Spelling
W m v c a e e q I need a word using q and some of these letters
asked on October 4, 2010 
chemistry
Thanks for the Help
asked on May 6, 2010 
science
how much energy is needed to heat 3kg of aluminium from 21 oC to 50 oC?
asked on September 4, 2009 
Statistics
Mortgage Rates In 2001, the mean contract interest rate for a conventional 30year first loan for the purchase of a singlefamily home was 6.3 percent, according to the U.S. Federal Housing Board.A real estate agent believes that interest rates are lower
asked on May 4, 2008

English
I am for the motion ,even though a kitchen is a place for females ,boys should also help because what if they get married and their wifes come home late and tired and your kids are hungry what will you do will you take them to a restaurant? so there is a
posted on June 16, 2019 
Diseases SS
Meseals
posted on September 25, 2017 
American Government
Ana Bear
posted on June 12, 2017 
Educational Technology
nibba is 100% right^^^
posted on June 7, 2017 
math
import matplotlib.pyplot as plt plt.plot([1,2,3,4]) plt.ylabel('some numbers') plt.show()
posted on September 30, 2016 
Algebra 2
Actually this one was easy for me. You just need to find which probability matches the data for the chance of both trials being a success, which you can figure out by choosing an answer and then using that answer to fill in the gaps in the formula to find
posted on September 15, 2016 
8th grade
Northeast for sure.
posted on January 31, 2016 
Math
8.3
posted on December 2, 2014 
Math Algebra 2
its a big horizontal rectangle with a smaller rectangle on the bottom of it
posted on September 3, 2012 
chemistry
Please tell me if this is correct. The pH of a solution: 0.20 M CH3COOH and 0.10 M CH3COONa pH=pKa+log{[CH3COONa]/[CH3COOH]} pH= log(1.8x105)+log{0.10/0.20} pH= 4.74+log 0.50= 4.740.30= 4.44
posted on May 5, 2010 
Chemistry II
Kc=(x)(x)/(1x)(1x) What is x in this equation and is is 4.0 Kc?
posted on April 13, 2010 
10th grade Geometry
18
posted on January 3, 2010 
science
it didn't give me any help at all could you please help me in another way and maybe find me out the answer
posted on September 6, 2009 
CT
1. I believe that the author has a bias because of the following quote. "Compared with a wide range of other programs and efforts to reduce drinking among teenagers, increasing the legal age for purchase and consumption of alcohol to 21 appears to have
posted on May 29, 2008 
science
1. Charging by Friction 2. Charging by Induction 3. Charging by Conduction
posted on May 28, 2008 
CT
I have identified that the article is biased towards keeping the MLDA the same.
posted on May 28, 2008