October 10, 2015

Posts by Leona

Total # Posts: 20

What is the mass percent of nitrogen in ammonium carbonate, (NH4)2CO3?
October 9, 2015

A class us planning a party. A pizza restaurant cuts each pizza into 8 slices. There are 32 students. How many pizzas does the class need to order for each student to have a slice? Explain
August 18, 2014

Convert 110 yards to miles. 110yd*0.9144m/1yd=100.584m Someone told me there is mistake but I can't figure it out?
July 18, 2014

if 1/2 years ago adam was 12, and 1/2x years from now he will be 2x years old, how old will he be 3x years from now
March 29, 2014

5th grade algebra
Kenneth has $5. He spends g cents every day. How much money does he have left after one week?
January 16, 2012

The distance d in miles that can be seen on the surface of the ocean is given by d = 1.6 h, where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 19.5 miles?
December 6, 2011

Volume problem: y=x^3, x=y^3; rotated about x-axis I first made y=x^1/3, then x^3=x^1/3 Then I tried to do an integration from 0 to 1 with x^1/3-x^3, but I can't get one of the possible answers, which are: A. 16/35π B. 16/7π C. 18/35 D. 7/2 E. 16π Any advice?
February 27, 2011

September 18, 2010

6th grade
how does respectfulness relate to being safe and responsible
September 11, 2010

Part 1 If 1/4 cup of Egg Beaters equals 1 egg, how much Egg Beaters do we need if we only want 1/3 egg? The solution should be expressed in cups. Part 2: Convert your answer in part 1 to tablespoons or teaspoons, whichever unit gives a whole number. Let E=quantity of Egg ...
August 26, 2010

A pack of 250 key blanks cost $23.50. What is the unit price? If each key costs a customer $1.75, and it takes 2 minutes for Darren to cut a key, how much does Darren make per hour? If Darren, as the business owner, pays himself $800 per week, how much profit (or loss) is the ...
August 26, 2010

is the 5-question approach to ethical decision making superior to the moral standards or pastin approach
August 25, 2010

Chloroacetic acid has a relatively large equilibrium constant, so at low acid concentrations it is necessary to use the quadratic equation in order to calculate the concentrations of the aqueous species. Ka for ClCH2COOH is 1.4 ´ 10-3. For the problems that follow, ...
June 19, 2010

A solution that is formed by combining 600. mL of 0.20 M NaOH with 400. mL of 0.40 M HNO3 has an H+ concentration of
June 19, 2010

5(8.85*10^-12)*(5*10^-6)/(1*10^-8) C=2.2125*10^-8C2/Nm
February 11, 2010

9th grade
a cube has a side that is (5x-3)centimeters long.a.what is its surface area?b.if x=3,what is its surface area
January 27, 2010

how mant moles are in 1.30g of (NH4)2SO4? answer in units of mol. today our teacher briefly went over this and doing my homework i totally lost it. and cant remember for the life of me what to do could you please help me and show me step by step what to do. thanks
March 18, 2009

Whicb moon would look the brightest from jupiter?
April 27, 2008

Corporate Finance
An investment today of $3,3OO is worth $10,000 IN 8 YEARS. At what rate has your investment been growing(annually) over the eight years ? For compounding rate of return: 3300*(1+r)^8 = 10000. so (1+r)^8 = 10000/3300 = 3.0303 My calculator has a nth root button -- so 1+r=1....
January 24, 2007

math fair projects
what are some good math fair projects Here are some broad ideas, I dont know your grade level. Use the Google search engine to find out details. Golden Mean Fiboccani numbers Discovery of Calculus The history of PI Archimedes Square yeah those are pretty good. a nice broad ...
August 9, 2006

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