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Mumz [18]
2 years ago
10

What evidence supports the conclusion that a chemical reaction has occurred?

Physics
1 answer:
GalinKa [24]2 years ago
3 0

Answer:

Precipitation formed

Temperature change

fizzing and hissing

bubbles

change in state

Explanation:

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klemol [59]
The resistance is 27.5 ohms
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A person measures his or her heart rate by counting the number of beats in 30s. If 40±1 beats are counted in 30.0±0.5s, what is
nordsb [41]

Answer:

Rate = 1.33 \pm 0.055 beats per second

Explanation:

Number of heart beats = 40 \pm 1

time taken = 30.0 \pm 0.5 s

now we have

N = 40 \pm 2.5%

t = 30.0 \pm 1.67%

now rate of heart beat is defined as number of heart beat per unit of time

so we have

Rate = \frac{N}{t}

Rate = \frac{40 \pm 2.5}{30 \pm 1.67}

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3 years ago
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Butoxors [25]

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1mm is equal to .1 what
bulgar [2K]

Answer:

When you have to do an English-Metric (SI) length conversion, and you already know the English units of length (miles, yards, feet, inches, etc.), all you need to remember is one simple relationship, and you can readily convert any length in the SI system, to the equivalent length in the other.

1 foot (ft) = 0.3048 meters (m)

BIn this case you need your answer in inches. You (hopefully) know there are 12 inches in a foot, so you just do the following:

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PLEASE HELP!
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No

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Cause a monster truck don

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