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IgorLugansk [536]
3 years ago
5

Among the different types of scientific knowledge ______ are likely to be modified or discarded most frequently. Long ago, in th

e 1600s, scientists discarded the phlogiston theory because ______________.
line 1. Hypotheses, laws, theories
line 2. Scientists wanted to explain things differently, new evidence didn’t support it, it was too old and needed to be replaced
Chemistry
1 answer:
Tresset [83]3 years ago
4 0

During a scientific study a hypotheses is generally modified or discarded

so for first blank the answer is hypotheses

Now in case of phlogiston theory it was assumed that when a substance catches fire it evolve certain substances known as phlogiston which was later on discarded as there is no such particle. Infact a substane undergoing oxidation may gain weight

Hence in second blank the answer is new evidence didn’t support it,

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Answer:

165 of CO₂.

Explanation:

In the reaction:

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7.5 moles of HCl ₓ ( 1 mol CO₂ / 2 mol HCl) = 3.75 mol CO₂. As molar mass of CO₂ is 44g/mol, mass of CO₂ is:

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Explanation:

¡Hola!

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