Physical Chemistry Answers

Compute the time required to pass 36000 C through an electroplating bath using..

3 hr
2 hr
2 min
2.5 min

The standard enthalpy change for this process is 6.01 kJ/mol. What is the minimum value for the standard entropy change, on the basis of your conclusions about the spontaneity?

THE OXIDATION POTENTIAL OF HYDROGEN ELECTRODE WILL BE GREATER THAN ZERO IF -

1. CONCENTRATION OF H+ IONS IS 2M

2. CONCENTRATION OF H+ IONS IS 1M

3. PARTIAL PRESSURE IS MORE THAN 2ATM

4. CAN NEVER BE POSITIVE

Structural formula of fluorine and hydrogen

pls tell me examles of scale of measurements(ordinal,nominal,interval and ratio scale) related to chemistry,,atleast 40 of each scale as soon as possible

I have a question on hydrophobicity. I have a product called Neverwet that creates a hydrophobic surface on stuff. There's a base and top spray. The top spray thats mainly acetone is supposed to keep water and a few other liquids away. It protects the surface from water but not from oil. As is know, acetone is a polar molecule like water, so isn't it suppose to mix? So my question is: why does the Neverwet spray protect it from water but not from oils and detergents?

Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 6.00-g sample is burned, and 2.30 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?

Nitrogen and hydrogen combine at high temperature, in the presence of a catalyst, to produce ammonia.

N2(g) + 3H2(g) ---> 2NH3(g)

Assume 0.140 mol of N2 and 0.460 mol of H2 are present initially.

1)After complete reaction, how many moles of ammonia are produced?
2)How many moles of H2 remain?
3)How many moles of N2 remain?
4)What is the limiting reactant?