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liberstina [14]
3 years ago
9

Levi and Rachel performed an experiment in which they measured the heart rate of an average adult. On one day, Levi measured the

resting heart rate of an adult. Then, the adult walked on a treadmill at a rate of four miles per hour. After thirty minutes, he measured the adult's heart rate again and recorded the data. Levi allowed the adult's heart rate to return to its original resting rate and then repeated his experiment two more times. Two days later, Rachel performed the same experiment with the same adult. She, too, measured the resting heart rate and the heart rate after exercising. Their data appears below.
Chemistry
2 answers:
Korvikt [17]3 years ago
8 0

Answe the difference in is not significant

Explanation:

Gnesinka [82]3 years ago
7 0

Answer:

The differences in their data are not significant.

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g100num [7]

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helium family or neon family

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2 years ago
What would be another property that we Earthlings could use to classify stars?
Blizzard [7]

Answer: At the point when space experts take a gander at an article's range, they can decide its arrangement dependent on these frequencies. The most well-known technique stargazers use to decide the sythesis of stars, planets, and different articles is spectroscopy. This spread-out light is known as a range.

Explanation:

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3 years ago
An unsaturated solution is formed when 80 grams of a salt is dissolved in 100 grams of water at 40. This salt could be ?
LekaFEV [45]
A simple way to go about this is that we look at the solubility curve, on the x axis we first look at the temperature and then the corresponding value of solute/100g H2O on the y axis, from the 4 curves above only NaNO3 has a curve that can accommodate  80g of salt at 40 without being Saturated since at 40 degrees it can accommodate 105g of salt to become completely Saturated.
7 0
2 years ago
Read 2 more answers
HELPP!!
ikadub [295]

Answer: C. CO₂ and H₂O

Explanation:

Combustion reactions produce carbon dioxide and water.

3 0
2 years ago
Alcohol and water have different melting points. which method would you use to separate them?
yuradex [85]
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4 0
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