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Help me clarify please!

I am calculating the overall mass for an atom. In other words, the whole number. I'll try to go in depth of what I mean.

Let's take a look at Germanium.

Its mass is 72.61.

When calculating the whole number as the overall atomic mass, do I input 72 or 73? Am I required to round at all times?

Respuesta :

Purplefox1212

Answer:

Round to the number of significant figures in the original question. However, if you're going to proceed with further calculations using this mass, it's best not to round, as rounding will cause your answer to be less precise.

Explanation:

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