3 years ago

What evidence of a chemical change is observed when rust forms on iron

Physics

1 answer:

bagirrra123 [75]3 years ago

4 0

A non-reversible Acton. A chemical reaction in non-reversible

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What evidence of a chemical change is observed when rust forms on iron

bagirrra123 [75]

A non-reversible Acton. A chemical reaction in non-reversible

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3 years ago

When developing an experimental design which action could a scientist take to improve the quality of the results

Anni [7]

Answer:

However, scientific findings in biomedical research are not always reproducible. ... that are promoting best practices and helping researchers perform the highest-quality science. ... in life science research and actions that can be taken to improve it. ... when designing experiments, take responsibility for depicting their results ...

Explanation:

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3 years ago

My Notes A container is divided into two equal compartments by a partition. One compartment is initially filled with helium at a

Ostrovityanka [42]

Answer:

$final-temperature = T_{f} = 252.51K$

Explanation:

we can solve this problem by using the first law of thermodynamics.

$\Delta U= Q-W$

Q= heat added

U= internal energy

W= work done by system

$E_{final}= E_{initial}$

$C_{v}(N_{2})=1.04\frac{KJ}{Kg K}$

$C_{v}(He)=5.193\frac{KJ}{Kg K}$

now

From equation 1

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$T_{f} = \frac{315\times1.04+5.193\times240}{1.04+5.193}$

$T_{f} = 252.51K$

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4 years ago

Why is charcoal black?

WARRIOR [948]

The answer is C.

I just took the test!

Hope this helps. :)

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3 years ago

What type of wave borders the violet end

wariber [46]

Violet light is at the end of the visible light section of the electromagnetic spectrum. Ultraviolet rays are directly next to violet rays on the EM Spectrum.

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3 years ago