Project #1378 - chemistry

1) Two samples of different metals have the same mass and are at the same temperature. Each is placed in a Styrofoam cup containing an equal amount of water at room temperature. Sample A increases the water temperature to 53oC and sample B increases the temperature to 45oC. Which metal sample has the higher heat capacity?

A)

Sample A


B)

Need to know the mass of the metals to figure this out


C)

Sample B


D)

Sample A and Sample B are the same

 

 

2) What is the pH of a 2.5 x 10-5 M solution of HCl? _______

Again, round to the tenths place (0.1)

 

 

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 balanced chemical equation for the neutralization reaction:

 

 

 

Nitric acid and magnesium hydroxide

________   +   ________  →   _________  +   _________

 

If 35mL of a 0.10M nitric acid solution is used to titrate a 20mL sample magnesium hydroxide, what is the Molarity of the base?

 

_______________ M

Subject Science
Due By (Pacific Time) 11/29/2012 12:00 am
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