« previous next »

Author Question: Which of the following is a noncrystalline solid that has no defined melting point? A) quartz B) ... (Read 58 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Aug 27, 2018
Which of the following is a noncrystalline solid that has no defined melting point?
 
  A) quartz
  B) glass
  C) cement
  D) mica

Question 2

Consider the following reaction: 2 Fe + 3 Mg2+  2 Fe3+ + 3 Mg The half-reaction for the reduction in this reaction is
 
  A) Fe  Fe3+ + 3 e-
  B) Fe3+ + 3 e-  Fe
  C) Mg  Mg2+ + 2 e-
  D) Mg2+ + 2 e-  Mg

Question 3

Which of the following problems is NOT created by the production of cement?
 
  A) Particulate material can result from mining of the limestone.
  B) Smoke and sulfur dioxide from the burning of fossil fuels increase air pollution.
  C) Incineration at high temperature is needed to destroy toxic organic wastes.
  D) It requires extensive mining of limestone, and large mountains and hills are being destroyed.


jsm54321

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D

Answer to Question 3

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Torque is a twisting force equal to the distance from the pivot point times the force applied ... Torque is a twisting force equal to the distance from the pivot point times the force applied ...
Write the equation in general form of the line passing through the point Write the equation in general form of the line passing through the point
How Solid Fats and Added Sugars Fit into a Healthy Diet How Solid Fats and Added Sugars Fit into a Healthy Diet
Set-Point Theory Set-Point Theory
Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1 Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1
Constructing a Three-Point Recombination Map Constructing a Three-Point Recombination Map
Video: Neurosynapse Animation

For a complete list of videos, visit our video library