What effect can new observations have on a scientific theory

1 answer:

5 0

New observations often tend to be on the same basis as the old ones and don't tend to change the theory but improve upon them. For example Isaac Newton stated the theory of gravity however thought the years scientists have improved upon his idea. Although the basis is the same

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If I need 2.2 moles of CO2 , and I have excess Fe2O3 , how many moles of C do I need?

olchik [2.2K]

Answer:

0.733 mol.

Explanation:

From the balanced equation:

2Fe₂O₃ + C → Fe + 3CO₂,

It is clear that 1.0 moles of Fe₂O₃ react with 1.0 mole of C to produce 1.0 mole of Fe and 3.0 moles of CO₂.

Since Fe₂O₃ is in excess, C will be the limiting reactant.

Using cross multiplication:

1.0 mole of C produces → 3.0 moles of CO₂, from the stichiometry.

??? mole of C produces → 2.2 moles of CO₂.

∴ The no. of moles of C needed to produce 2.2 moles of CO₂ = (1.0 mole of C) (2.2 mole of CO₂) / (3.0 mole of CO₂) = 0.733 mol.

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maria [59]

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COCI2 has an effusion rate of 0.00172 m/sec. Which of the gases below would have an effusion rate of 0.00323 m/sec?

geniusboy [140]

CO por qué si y punto, chao

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2 years ago

Explain the Doppler effect using light. Why is the Doppler effect important in astronomy?

Alexeev081 [22]

Doppler effect is the compression or extension of a sound wave, which causes a change in its wavelength / frequency (and so its sound).
Explanation: It is defined as the effect produced by a moving source of waves in which there is an upward shift in frequency for observers, the source is moving towards and downward shift of frequency from which the source is moving away. used to tell if an object in space is moving toward or away from us.

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When considering metal complexation with EDTA, if you are comparing 2 metals, the metal with a higher ____________ will react wi

DENIUS [597]

If you are comparing 2 metals, the metal with a higher Number of free ions will react with EDTA first

EDTA is a type of chemical which binds certain metal ions such as calcium and magnesium. some of the functions of EDTA includes:

Preventing blood clotting of blood samples
prevention of the formation of Biofilm by bacterias

The EDTA will readily react with metals which have a hiogher number of free ions that it can bind with.

Hence we can conclude that If you are comparing 2 metals, the metal with a higher Number of free ions will react with EDTA first.

Learn more about EDTA : brainly.com/question/10818175

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2 years ago