This topic contains a solution. Click here to go to the answer

Author Question: Which of the following shows the correct relationship among density, volume, and mass? 1. Density = ... (Read 66 times)

piesebel

  • Hero Member
  • *****
  • Posts: 565
Which of the following shows the correct relationship among density, volume, and mass? 1. Density = volume/mass 2. Volume = density/mass 3. Mass = (density)/(volume) 4. Weight density = weight/volume
 
  a. 1 and 3 c. 4
  b. 1 and 4 d. 3 and 4

Question 2

What will happen to the surface tension of water droplets when a surface-active agent is added?
 
  a. Nothing will hap-pen. c. It will decrease.
  b. It will increase. d. It will be eliminat-ed.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ilianabrrr

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

ANS: D
Given density, d = mass (m)/volume (v), the equation can be solved for each variable: m = dv, v = m/d. When mass is substituted by weight, dw = w/v.

Answer to Question 2

ANS: C
Surface tension is the force exerted by like molecules at the liquid's surface. The introduction of a surface-active agent (e.g., soap) would decrease the cohesive forces between the water drop-lets, thus reducing their surface tension at the surface. With liquids (e.g., water), surface tension can be made to increase or decrease, but it cannot be eliminated. See Figure 1-9.




piesebel

  • Member
  • Posts: 565
Reply 2 on: Jul 16, 2018
Gracias!


Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library