Answer:
The hydrogen gas is prepared in the laboratory required zink granules, dilute sulphuric acid or dilute hydrogen chloride, flask or woulfe’s bottle, and thistle funnel. by the downward displacement of water because it is a gas lighter than water
Reaction:
Zn (s)+2HCl (aq) →ZnCl2(aq)+H2(g)
Zn (s)+H2SO4(aq)→ZnSO4(aq)+H2(g)
The zinc granules are taken in a flask or Woulfe’s bottle and It is connected with the delivery tube to a water trough containing water. Dilute sulphuric acid is poured slowly from the thistle funnel. The hydrogen gas is released and collected in a gas jar by by the downward displacement of water as H2 gas lighter than water
Answer:
scientist can tell by observing the seismic waves that are recorded all over the surface of the earth from distant earthquakes
Explanation:
An example of unit 10 study guide circles geometry is solve for x in the diagram attached.
<h3>What is Geometry?</h3>
This is known to be an aspect of mathematics that deals with the study of different sizes, shapes, positions angles etc.
To find x. bring like terms together.
6x + 33+ 45 = 180
6x + 78 = 180
6x = 180- 78
6x=102
x = 102/6
Therefore x = 17
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