January 28, 2015

Posts by Lux

Total # Posts: 7

Social Studies
Thank you so much!
May 11, 2014

Social Studies
*United States
May 11, 2014

Social Studies
Why was the united states interested in claiming the Oregon Country? Is it because they just wanted to expand their land even more?
May 11, 2014

A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline or neutral. (ii) ...
April 21, 2013

A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 gt^2 is used to calculate the distance (d) the ball has fallen after t seconds. The constant g is the acceleration of gravity, 9.8m/s^2. How long does it take the ball to hit the ground? A ball in problem...
November 19, 2012

Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C4H4 (-2341 kJ/mol), C4H8 (-2766 kJ/mol) and H2 (-286 kJ/mol), ...
December 28, 2010

science( chem)
what is the meaning of "rad" in [OH-]= rad(Kb*cNaA)
July 22, 2007

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