Answer: So you are matter, the apple, water, a computer etc.
Explanation: matter is anything that takes up space
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.
Read more about astronomy here:
brainly.com/question/1141458
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Answer:
Post it on another page I can try to help.
Answer:
6 HCl to 2 VOCl3
Explanation:
The coeffcients in front of the elements, represent moles. Therefore because the equation is balanced, you would evaluate your answer of the mole based off of what the question is asking. The question asked about the mole ratio of the two elements HCl to VOCL3. There is a number 6 in front of HCl which means that there are 6 moles of HCl, and there is a 2 in front of VOCL3 which means that there are 2 moles of VOCL3.
Therefore the correct answer will be 6 HCl to 2 VOCL3
The reaction will be: FeBr2 + K --> KBr + Fe
Balancing gives: FeBr2 + 2K --> 2KBr + Fe
The molar mass of FeBr2 is 55.85 + 2*79.9 = 215.65 g/mol.
We divide 40 g / 215.65 g/mol = 0.185 mol FeBr2
Based on stoichiometry:
(0.185 mol FeBr2)(2 mol KBr/1 mol FeBr2) = 0.370 mol KBr
