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
Explanation:
It evaporates from the earth surface, condenses into clouds, and falls back to earth as rain or snow.
In other words, a map projection systematically renders a 3D ellipsoid (or spheroid) of Earth to a 2D map surface. ... Because you can't display 3D surfaces perfectly in two dimensions, distortions always occur. For example, map projections distort distance, direction, scale, and area.
In cartography, a map projection is a way to flatten a globe's surface into a plane in order to make a map. This requires a systematic transformation of the latitudes and longitudes of locations from the surface of the globe into locations on a plane.
Top 10 World Map Projections
-Mercator. This projection was developed by Gerardus Mercator back in 1569 for navigational purposes. ...
-Robinson. This map is known as a 'compromise', it shows neither the shape or land mass of -countries correct. ...
-Dymaxion Map. ...
-Gall-Peters. ...
-Sinu-Mollweide. ...
-Goode's Homolosine. ...
-AuthaGraph. ...
-Hobo-Dyer.
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London is closer to Europe than Dover.
Seven
red, orange, yellow, green, blue, indigo, and violet
