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December 8, 2013

# Posts by richard

Total # Posts: 221

chemistry
How many moles are in 13grams of C6H6. should this question be broken down into its imperical formula (CH)6 and calculate the number of moles of CH and multiply by 6 or calculate the gram molecular wt of C6H6 and divide it into 13 grams?

Trigonometry
take the tangent of 70 degrees and multiply it by 30 yards.

physics.
: When the mass hits the pile, it has kinetic energy. This energy is transformed into other forms of energy as the speed of the falling mass rapidly reduces to zero. As this happens, the pile is forced a small distance into the ground. question: Explain how a large force is pr...

history
What were the main elements of Johnson’s War on Poverty?

history
What were the main elements of Johnson’s War on Poverty?

Calculus
Would someone please tell me how to solve these two problems? Find the indefinite integral: x(x-1)^5 dx (v^2)(1-v)^6 dv

science
what is air? a compound, a mixture, a solution, or an amalgam

chemistry.
What amount of H2(g) is produced when 12g of magnesium reacts completely with dilute HCl(aq) Mg(s) + 2HCl(aq) ------> MgCl2(aq) + H2(g)

chemistry.
What?

chemistry.
Lithium hydroxide reacts with carbon dioxide as follow. 2LiOH + CO2________ Li2CO3 + H2O What mass (in grams) of Lithium hydroxide is need to react with 11 g of carbon dioxide?

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