Explain what is the heat change in j associated

Assignment Help Chemistry

Reference no: EM13222009

What is the heat change in J associated with 15 g of solid ethanol at -177 oC changing to gas at 146 oC?

c(ethanol) (g) = 1.22 J/(g.K)

c(ethanol) (liq) = 2.44 J/(g.K)

c(ethanol) (s) = 1.89 J/ (g.K)

?Hfus(ethanol) = 5.01 kJ/mol

?Hvap(ethanol) = 38.6 kJ/mol

The freezing point of ethanol is -114 oC.

The boiling point of ethanol is 79 oC.

Reference no: EM13222009

Questions Cloud

Explain the equilibrium concentrations : Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M, [O2]eq = 4.1 M, [N2O]eq = 3.3 × 10-18 M.

Show the statistical data methodologies : How might, SWOT and PEST, value chain analysis, statistical data methodologies and other research processes used to provide input into a strategic plan.

What is the marginal opportunity cost of producing : a) what is the marginal opportunity cost of producing the second unit of clothing b) what is the total opportunity cost of producing the second uit of closthing c) what is the marginal opportunity cost of producing the third unit of clothing

Define the freezing point for pure water : Assuming complete dissociation of the solute, how many grams of \rm KNO_3 must be added to 275 \rm mL of water to produce a solution that freezes at -14.5 ^\circ {\rm C}? The freezing point for pure water

Explain what is the heat change in j associated : What is the heat change in J associated with 15 g of solid ethanol at -177 oC changing to gas at 146 oC?

Evaluate the molar mass of the unknown compound : An aqueous solution containing 34.1 g of an unknown molecular (nonelectrolyte) compound in 141.3 g of water was found to have a freezing point of -1.5 degrees C. Calculate the molar mass of the unknown compound.

Briefly describe the dilemma : Briefly describe the dilemma and discuss how the dilemma was resolved - provide a critique of the decision, examining the interests of all stakeholders.

Compute the molar mass of the unknown compound : unknown molecular (nonelectrolyte) compound in 102.0 g of water was found to have a freezing point of -1.8 degrees C. Calculate the molar mass of the unknown compound.

Application of the concepts and techniques : To create your outline, you should begin by working with the approved Project Proposal. Your outline must be structured using distinct sections- ensure the application of the concepts and techniques already presented in module

User Account

All Pages