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Chemistry
Seawater contains 0.412 g Ca per kilogram of water. What is the number of moles of Ca per kilogram of water? What is the concentration of Ca measured in ppm? For the first question, it's changing the grams of Ca to moles of Ca. Is
asked by Unknown on February 23, 2011 
4th grade math
1.) 99,412.55 2.) 44,499.77 How would you round the following to the nearest tenth? Would #1 be 99,412.60? Would #2 be 44,499.80? Please explain if I'm incorrect. Thank you in advance.
asked by Yan on March 1, 2010 
math,correction
the problem reads: evaluate sqrt (4) if possible. my answer: sqrt (4)
asked by jasmine20 on April 19, 2007 
Math
1) Malene rented a compact car for 10 days and drove it 620 miles for a total cost of 412$. Patrick rented a compact car at the same rental car company for 6 days and drove it 850 miles. His total cost was 295. Which system of
asked by Alan on April 29, 2015 
5th grade math
A list of numbers represents the following pattern: For each number after the first, multiply the previous number by itself, and then subtract that number. Which list does NOT represent that pattern? A. 1,1,1,1, and so on B.
asked by jamar on January 15, 2014 
5th grade math
A list of numbers represents the following pattern: For each number after the first, multiply the previous number by itself, and then subtract that number. Which list does NOT represent that pattern? A. 1,1,1,1, and so on B.
asked by jamar on January 15, 2014 
Chemistry Equilibrium
1.15 g oh h2O (density 1.00 g/ml) is introduced into an empty 1.00 L container. The seled container is heated to 412 K and .150 moles of O2 (g) is present at equilibrium. A. Wrte the equilibrium expression for the reaction above.
asked by Lola on February 26, 2015 
Math
Rewrite the number sentence with parentheses to make it correct.412=70x5+18. And 6x105=55
asked by Zacko on January 8, 2013 
Physics
I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly. 0  (h/5) = 1.1(v0)  (1/2)(9.8)(1.1)^2 (v0)^2 =
asked by Kai on July 14, 2011 
chemistry
how do I calculate rate velocity using absorbence at 412/ min1.
asked by de1 on February 22, 2015