Calorimetry

What is the answer to this problem?

• 42 g

• 0.04 kg

• 0.02 g

• 24 g

Tags

NGSS.HS-PS3-1

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 Celsius

• they both have an equal temperature

• they have the same potential energy

• one reaches its phase change temperature

Tags

NGSS.HS-PS3-4

A reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction. If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius. Is the reaction endothermic or exothermic?

• Exothermic

• Endothermic

Tags

NGSS.HS-PS1-4

What is calorimetry?

• The process of measuring the amount of heat that is absorbed or released in a chemical reaction

• The process of measuring the amount of time it takes for certain reactions to take place

Tags

NGSS.HS-PS1-4

How is she going to get the c (specific heat) by itself?

Tags

NGSS.HS-PS3-4

What is your final answer?

• 0.89 J/g°\degree°C

• 1.12 J/g°\degree°​C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

We will use lowercase "c" instead of C_S, what does c stand for?

• Temperature in Celcius

• specific heat capacity

• heat released or absorbed

The negative sign means that energy is released.  Does this mean that it's endothermic or exothermic?

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

What is the change in temperature?

• 90 degrees Celsius

• -90 degrees Celsius

• 9612  J

• 120 g

Tags

NGSS.HS-PS3-4

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.HS-PS3-1