All categories

2 years ago

!!!!100 POINTS!!!!

Chemistry

1 answer:

Cerrena [4.2K]2 years ago

6 0

The research of astronomy during the time period of 1970 - 1990 is given below:

<u>Date</u> <u>Event</u>

1. 15 June 1974 Black Brant VC sounding rocket from White Sands.

2. 14 May 1973 Launch of Skylab, the USA's first space station

3. 26 July 1971 Launch of Apollo 15

<h3>What is Astronomy?</h3>

This refers to the branch of science that deals with celestial bodies and their relation to each other.

Hence, from information about astronomy, between the time period 1970 - 1990 as it was on the 26th of December, 1974 that the Soviet space station Salyut-4 was launched.

The event I think had the greatest impact in astronomical history during this time period was the launch of Apollo 16.

You might be interested in

What can scientists learn by studying fossils? I. how the Earth's surface has changed over time II. the appearance of an organis

frozen [14]

All of the above!

By analyzing the remains of fossilized organisms (such as old animal bones or plants), scientists can approximate what the organism might have looked like and the climate/environment it lived in -- and based on that, they can try to figure out how the Earth's surface has changed over time. Also, they can use the fossil to compare it to creatures that live now to see what has changed in that species over time.

6 0

4 years ago

Read 2 more answers

Which statement is true?

Setler79 [48]

The first statement is true because s<span>peed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed has nothing to do with direction. On the other hand, velocity is a vector quantity because direction is needed for this. </span>

8 0

4 years ago

Read 2 more answers

Could someone confirm that this is correct? Thanks!

NemiM [27]

Your sheet is correct

5 0

4 years ago

Read 2 more answers

Which of the following factors would negatively impair the water quality in a watershed? I. irresponsible use of industrial chem

Deffense [45]

Answer:

1 and 2 only

Explanation: These will make a bad impact on water.

3 0

4 years ago

Read 2 more answers

A neutralization reaction between an acid and sodium hydroxide formed water and the salt named sodium sulfate. What was the form

myrzilka [38]

Answer: The formula of the acid that was neutralized is $H_2SO_4$

Explanation:

Neutralization is a chemical reaction in which acid and base combine to form salt and water. Acids donate $H^+$ and bases donate $OH^-$ in water which combine to form water molecules.

As the salt formed is $Na_2SO_4$ , the acid must contain $SO_4$ and thus the acid is $H_2SO_4$

The balanced chemical reaction is ;

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

The formula of the acid that was neutralized is $H_2SO_4$

3 0

4 years ago