This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Igneous rock that formed on Earth's surface by solidification of lava is known as a. extrusive ... (Read 63 times)

urbanoutfitters

  • Hero Member
  • *****
  • Posts: 530
on: Jul 28, 2018
Igneous rock that formed on Earth's surface by solidification of lava is known as
 a. extrusive rock.
  b. intrusive rock.
  c. metamorphic rock.
  d. silicate rock.

Question 2

The formula mass of Na2S is
 a. 55.1 u.
  b. 30.1 u.
  c. 78.1 u.
  d. 57.1 u.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcinincha279

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

c


urbanoutfitters

  • Hero Member
  • *****
  • Posts: 530
Reply #2 on: Jul 28, 2018
Thanks


mcinincha279

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Mira as seen from the Earth Mira as seen from the Earth
Earth, water, air Earth, water, air
Success, You Rock, Achievement, The way we work Success, You Rock, Achievement, The way we work
Surface Fronts and Upper-Level Patterns: Cold Fronts and the Formation of Upper-Level Troughs Surface Fronts and Upper-Level Patterns: Cold Fronts and the Formation of Upper-Level Troughs
The lectin pathway of recognition and activation. Either MBL or serum ficolin bind to surface ... The lectin pathway of recognition and activation. Either MBL or serum ficolin bind to surface ...
Average Surface Air Pressure – July Average Surface Air Pressure – July
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library