« previous next »

Author Question: The absorption lines in the visible portion of the spectrum of a star that are produced by hydrogen ... (Read 86 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 27, 2018
The absorption lines in the visible portion of the spectrum of a star that are produced by hydrogen are from the
 
  a. Lyman series.
  b. Balmer series.
  c. Paschen series.
  d. isotopes of hydrogen.
  e. ions of hydrogen.

Question 2

There are _______ nanometers in one meter.
 
  a. 1  103
  b. 1  103
  c. 1  109
  d. 1  109
  e. 400


leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Isotopes of Hydrogen Isotopes of Hydrogen
The constellation of Leo as it can be seen by the naked eye. Lines have been added. The constellation of Leo as it can be seen by the naked eye. Lines have been added.
Responses Produced by Activation of Specific Opioid Receptors Responses Produced by Activation of Specific Opioid Receptors
Display is the only position to view the firing lines of all cylinders. Cylinder 1 is displayed on ... Display is the only position to view the firing lines of all cylinders. Cylinder 1 is displayed on ...
Portion sizes of French fries have more than doubled from the past Portion sizes of French fries have more than doubled from the past
If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ... If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ...
Video: Attention Deficit Disorder (ADD)

For a complete list of videos, visit our video library