Calorimetry Practice Quiz

Refer the the following question:
2N₂ + 3H₂ --> 2NH₃ + 46 kJ
How much energy would be produced if only 1 mol of nitrogen was reacted?

• 92 kJ
• 0.143 kJ
• 23 kJ
• 15 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

Do reactants in an endothermic reaction have a higher or lower energy than the products? 

• Higher
• Lower

Tags

NGSS.HS-PS1-4

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ____________

• one reaches a temperature of zero

• they both have an equal temperature

• one runs out of energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

If the specific heat of water is 4.18 J/g∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?

• -80,256 J

• 80.256 J

• 80,256 J

• -80.256 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

A metal cube at temperature of 10°C immersed in a liquid at temperature of 70°C.
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?

• Between 10°C and 70°C
• More than 70°C
• Less than 10°C
• Same as the room temperature

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Specific heat capacity is

• heat energy needed to raise temp by 1C
• heat energy needed to raise temp of 1g of substance by 1C
• heat energy absorb to raise 1g of substance to higher temp
• heat energy need to raise temp for 1g of substance

Tags

NGSS.MS-PS3-4

Define standard enthalpy of combustion.

• Heat released when one mole of substance is burnt completely in excess oxygen.

• Heat absorbed when one mole of substance is burnt completely in excess oxygen under standard condition.

• Heat released when one mole of substance is burnt completely in excess oxygen under standard condition.

• Heat change when one mole of substance is burnt partially in excess oxygen under standard condition.

Tags

NGSS.MS-PS1-4

Which is true for this enthalpy diagram?

• Exothermic Reaction
• Endothermic Reaction
• ΔH > 0 kJ
• Δ H = 0 kJ

Tags

NGSS.HS-PS1-4

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Calorimeters use insulating materials to:

• encourage affordable materials in science experiments in schools.
• preserve the heat of the environment outside the Styrofoam cup.
• prevent heat from escaping to the environment.
• keep the liquid inside the Styrofoam cup from overheating.

Tags

NGSS.MS-PS3-3