Posted: February 16th, 2020
Environmental Chemistry Assignment
To process certain metal ores, reactions with carbon can sometimes generate the pure metal at high temperatures.
Consider the reaction of zinc oxide with carbon:
ZnO + C – Zn + CO; AH = 240 kJ/mol
How much heat needs to be absorbed by the system (inkl) to react 3103 g of ZnO with 328 g of C until the reaction is completed?
You have 5 attempts at this question.
TIP: To report an answer in scientific notation, enter it using the format “2.3E4”, which means “2.3 x 104” (without the quotation marks) Answer:
Select the appropriate terms which describe the nature of AH (with respect to the system) in each scenario at constant pressure.
a. System absorbs heat, work performed on the system
b. System absorbs heat, work performed by the system on the surroundings..
c. System emits heat, work performed on the system.
d. System emits heat, work performed by the system on the surroundings.
Select the appropriate terms which describe the nature of AH (with respect to the system) in each scenario at constant pressure.
a. System absorbs heat, work performed on the system.
b. System absorbs heat, work performed by the system on the surroundings.
c. System emits heat, work performed on the system.
d. System emits heat, work performed by the system on the surroundings. Get Chemistry Help Today