Saturday
April 19, 2014

Homework Help: Chemistry- HWK CHECK

Posted by Blair on Monday, August 4, 2008 at 9:10pm.

1. A solution in which no more solid can be dissoved is referred to as ____.
Answer: saturated

2.At constant pressure, heat can be referred to as (entropy, enthalpy, or free energy). Answer: enthalpy

The measure of disorder or randomness of a system is(entropy, enthalpy, or free energy). Answer: entropy

The spontaneity of a reaction is indicated by the direction of change of a system's(entropy, enthalpy, or free energy). Answer: free energy

3.The color of bromocresol green indicator is ______when pH < 4, green when pH 4- 5.3 and ______in pH > 5.3.
first blank =yellow 2nd blank= blue

4.Na2B4O7+ 10H2O(s) 2Na+ (aq) + B4O5(OH)42–(aq) + 8H2O(l)

The sign of (delta)Ssys will be
A. postive
B. negative
answer:negative

because there are..
A.more
B. less
answer: more
moles of product generated.

5.The solubility of borax is directly proportional to temperature. Therefore, the sign of (delta)H is..
A. negative
B. postive
C. unknown with the given information.
answer: C.

THANK YOU!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - A solution in which no more solid can be dissoved is referred to as...
chemistry - a solution in which no more solid can be dissolved is referred to as...
chemistry - Which of the following is not true in a dynamic equillibrium ...
sceince 2 - 6. When aqueous solutions of table salt and silver nitrate are mixed...
Chemistry - A 0.60 L portion of a 1.2 M AgNO3 solution is mixed with a 0.3 L ...
thermodynamics - 0.5 kg of saturated vapor is contained in a closed system with ...
Chemistry - In an experiment to measure the solubility of Ba(OH)2 x 8H2O in ...
Chemistry - How much heat (in BTU) would be required to heat and vaporize 100 lb...
Chemistry - Instant cold packs used to treat athletic injuries contain solid ...
Chemistry - Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp...

Search
Members