« previous next »

Author Question: Two aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter. ... (Read 113 times)

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
on: Aug 27, 2018
Two aqueous solutions are both at room temperature and are then mixed in a coffee cup calorimeter. The reaction causes the temperature of the resulting solution to fall below room temperature. Which of the following statements is true?
 
  A) The products have a lower potential energy than the reactants.
  B) This type of experiment will provide data to calculate Erxn.
  C) The reaction is exothermic.
  D) Energy is leaving the system during reaction.
  E) None of the above statements are true.

Question 2

What is the volume of a gold nugget that weighs 2.20 kg? The density of gold is 19g/cm3.
 
  A) 8.60  103 cm3
  B) 116 cm3
  C) 11.6 cm3
  D) 8.60 cm3
  E) 0.116 cm3


mmpiza

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Aug 27, 2018
Answer to Question 1

E

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

How many faces do you see (Solutions) How many faces do you see (Solutions)
Measuring Temperature Using a Heat-Sensitive Wearable Thermometer Measuring Temperature Using a Heat-Sensitive Wearable Thermometer
The Greenhouse Effect: Influences on Temperature The Greenhouse Effect: Influences on Temperature
Find the temperature of the room (above the outside temperature) at the end of 120 min Find the temperature of the room (above the outside temperature) at the end of 120 min
Use tap water when making coffee, tea, or juice from concentrate, and for food preparation Use tap water when making coffee, tea, or juice from concentrate, and for food preparation
What would be the appropriate equilibrium temperature of a system obtained by adding 25.0 g of ... What would be the appropriate equilibrium temperature of a system obtained by adding 25.0 g of ...
Video: How Hemoglobin Picks Up and Delivers Oxygen

For a complete list of videos, visit our video library