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Chapter 3: Q.3.83 (page 93)
What is in degrees Celsius and in kelvins?
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Calculate the heat change at for each of the following and indicate whether heat was absorbed/released:
a. calories to vaporize g of water
b. joules to vaporize g of water
c. kilocalories to condense kg of steam
d. kilojoules to condense g of steam
Identify each of the following changes of stane as melting. freezing, sublimation, or deposition:
a. The solid structure of a substance breaks down as liquid forms.
b. Coffee is freeze-dried.
c. Water on the street turns to ice during a cold wintry night.
d. Ice crystals form on a package of frozen corm.
Use the heat equation to calculate the energy for each of the following (see Table):
a. calories lost whenlocalid="1653051789792" a of waler cools from localid="1651743554041" to localid="1651743558077"
h. joules to heatlocalid="1651743562257" of water from localid="1651743566051" to localid="1651743570658"
C. kilocalories to heat localid="1651743574953" of water from localid="1651743579245" to localid="1651743583100"
d. kilojoules to heat localid="1651743586855" of gold fromlocalid="1651743591821" to localid="1651743595595"
Classify each of the following pure substances as an element or a compound:
a. silicon () chip
b. hydrogen peroxide localid="1651737397761"
c. oxygen gas localid="1651737412373" role="math"
d. rust localid="1651737418279"
e. methane localid="1651737422197" in natural gas
A patient receives of intravenous () glucose solution. If of the solution contains of glucose (carbohy. drate), how many kilocalories did the patient obtain from the glucose solution?
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