Answer:

Explanation:
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In this case, as the atomic mass of coppe is 63.546 g/mol, with the given mass with can compute the moles as shown below:

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The tilt of the Earth on its axis is what causes the seasons.
Answer:
if you are working with hazardous materials.
Explanation:
A properly operating and correctly used fume hood can reduce or eliminate exposure to volatile liquids, dusts, and mists. It is advisable to use a laboratory hood when working with all hazardous substances.
Answer:
Grinding or breaking an Alka-Seltzer tablet increases the number of particles and increases the surface area. Material which was within the tablet is exposed, allowing for more collisions between reactant particles and resulting in an increased rate of reaction.
Answer:
d.
Explanation:
liters is a measure of volume, it is an SI accepted metric system unit