Chemistry Chapter 2 Homework
2.14)
a) Zirconium melting point is a physical property.
b) Zirconium being resistant to corrosion is a chemical property.
c) Zirconium having a greyish-white appearance is a physical property.
d) It is a chemical property that allows Zirconium to ignite in the air when cut into small pieces.
e) It is a physical property that Zirconium is a shiny metal.
2.18)
a) Potential energy
b) Kinetic energy
c) Kinetic energy
d) Kinetic energy
2.22)
I would advise my friends to read the instructions one more time. 175F* seems to be fairly low in cooking flan. Chances are that he probably mixed up Celsius with Fahrenheit.
2.32)
a) Heat = (5.25g)(64.8*C-5.5*C)(1cal/g*C)
Heat = 311.32Calories = 1302.56Joules
b) Heat= (75g)(2.1*C-86.4*C)(1cal/g*C)
Heat lost= -6322.5Cal (-6.3*10^3Cal)= -26453.34Joules (-2.6*10^4J)
c) Heat=(10.0g)(275*C-112*C)(0.0562 cal/g*C)
Heat= 91.61Cal= 383.28Joules
d) Heat=(18.0g)(118*C-224*C)(0.0308cal/g*C)
Heat=-58.77Cal=-245.87Joules
2.38) This diet provides 925kcal or 3870.2kJ
2.50)
2.60) The new temperature of the water would be 19.8*C
2.61) The meal would produce 1101kcal.
2.62)
a) It will take 18.3hours to burn off 1101kcal.
b) It will take 1.5 hours to burn off 1101kcal.
2.67)
a) element
b) compound
c) mixture
d) compound
e) mixture
2.68)
a) Heterogeneous
b) Homogeneous
c) Homogeneous
d) Heterogeneous
e) Homogeneous
2.72)
a) physical
b) chemical
c) chemical
d) physical
2.74)
a) physical
b) physical
c) chemical
d) chemical
2.80) Because the cold glass of ice tea forms condensation when in contact with the droplets of water in the
a) Zirconium melting point is a physical property.
b) Zirconium being resistant to corrosion is a chemical property.
c) Zirconium having a greyish-white appearance is a physical property.
d) It is a chemical property that allows Zirconium to ignite in the air when cut into small pieces.
e) It is a physical property that Zirconium is a shiny metal.
2.18)
a) Potential energy
b) Kinetic energy
c) Kinetic energy
d) Kinetic energy
2.22)
I would advise my friends to read the instructions one more time. 175F* seems to be fairly low in cooking flan. Chances are that he probably mixed up Celsius with Fahrenheit.
2.32)
a) Heat = (5.25g)(64.8*C-5.5*C)(1cal/g*C)
Heat = 311.32Calories = 1302.56Joules
b) Heat= (75g)(2.1*C-86.4*C)(1cal/g*C)
Heat lost= -6322.5Cal (-6.3*10^3Cal)= -26453.34Joules (-2.6*10^4J)
c) Heat=(10.0g)(275*C-112*C)(0.0562 cal/g*C)
Heat= 91.61Cal= 383.28Joules
d) Heat=(18.0g)(118*C-224*C)(0.0308cal/g*C)
Heat=-58.77Cal=-245.87Joules
2.38) This diet provides 925kcal or 3870.2kJ
2.50)
2.60) The new temperature of the water would be 19.8*C
2.61) The meal would produce 1101kcal.
2.62)
a) It will take 18.3hours to burn off 1101kcal.
b) It will take 1.5 hours to burn off 1101kcal.
2.67)
a) element
b) compound
c) mixture
d) compound
e) mixture
2.68)
a) Heterogeneous
b) Homogeneous
c) Homogeneous
d) Heterogeneous
e) Homogeneous
2.72)
a) physical
b) chemical
c) chemical
d) physical
2.74)
a) physical
b) physical
c) chemical
d) chemical
2.80) Because the cold glass of ice tea forms condensation when in contact with the droplets of water in the