Project #1389 - chemistry

1) An iron bar with a mass of 150g is heated from 22oC to 45oC.  The heat capacity of the iron bar is known to be 0.45J/goC.  How much energy (in Joules) did the iron bar absorb?

_________ Joules

Round your answer to the ONES place.

 

2) Calculate the pH of a 0.00010M NaOH solution. _________  

Be sure to round to the tenths place

 

 

3) To answer the neutralization reaction questions, use the following formats:

Acid + Base →  Salt  +  Water

Do not change the font to subscript, EX for H2O you type in H2O

Enter the coefficients to balance the reaction ONLY when it is a number greater than one, EX use 2H2O, but not 1H2O.

Type in the complete balanced chemical equation for the following neutralization reaction:

Sulfuric acid and lithium hydroxide

___________ +   _________  →  _________  +   __________

 

A 25 mL sample of lithium hydroxide is titrated to its endpoint with 22.85mL of a 0.0805M sulfuric acid solution.  What is the concentration of the base?

____________ M

Subject Science
Due By (Pacific Time) 11/30/2012 05:00 pm
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