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ohaa [14]
2 years ago
7

Day and night are caused by... 1.the tilt of Earth's axis. 2. Earth's revolution around the sun. 3. eclipses. 4.Earth's rotation

on its axis. HELP ME this is due at 1 in the afternoon for science ​
Chemistry
1 answer:
Kryger [21]2 years ago
5 0

Answer:

earths rotation on its axis

Explanation:

Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

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 Analytical Chemistry 2.1 (Harvey) 

 

 2: Basic Tools of Analytical Chemistry

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2.5: Preparing Solutions

Last updatedAug 10, 2020

2.4: Basic Equipment

2.6: Spreadsheets and Computational Software

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Contributed by David Harvey

Professor (Chemistry and Biochemistry) at DePauw University

Preparing a solution of known concentration is perhaps the most common activity in any analytical lab. The method for measuring out the solute and the solvent depend on the desired concentration and how exact the solution’s concentration needs to be known. Pipets and volumetric flasks are used when we need to know a solution’s exact concentration; graduated cylinders, beakers, and/or reagent bottles suffice when a concentrations need only be approximate. Two methods for preparing solutions are described in this section.

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