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enot [183]
3 years ago
8

Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activ

ity and a
person's pulse rate?
Chemistry
2 answers:
Airida [17]3 years ago
5 0

Answer:

the more physical activity you do the higher your heart rate rises

Explanation:

me every time I walk more then two steps honestly

hjlf3 years ago
3 0

Answer:

During exercise, heart rate can rise dramatically, from a resting rate of 60–80 beats per minute to a maximum rate of about 200 for a young adult. While you are running, blood flow is diverted toward tissues that need it most. For example, muscles in the arteries in your legs relax to allow more blood flow.

Explanation:

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One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar conc
Dovator [93]
<h3>Mol of methanol =12.35</h3><h3>Further explanation</h3>

Mole itself is the number of particles contained in a substance

1 mole = 6.02.10²³ particles

Mole : the ratio of the amount of substance mass and its molar mass

\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Molar concentration of methanol=24.7 M

Volume of solution = 500 ml = 0.5 L

\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35

7 0
3 years ago
A sample of gas has a volume of 12.0 L and a pressure of 1.97 atm. If the pressure is increased to 3.40 atm, what is the new vol
sveticcg [70]
As far as I know, may be wrong :When pressure is multiplied by a number, the gas volume also gets multiplied by the same number. So, the answer can be found by doing: (3.4/1.97)(12), and the answer is about 20.71.
8 0
4 years ago
Starting in the mouth, food follows a pathway through the digestive system. Describe how the mouth is involved in both mechanica
Rudiy27

Answer:

The mouth uses both mechanical and chemical digestion. Mechanical digestion involves physically breaking down the food into smaller pieces (using the jaw/teeth). However, chemical digestion then takes over and starts breaking down the food into simpler nutrients that can be used by the cells using saliva, which is naturally made within the mouth.

Hope this helps you! Have a great day! :D

5 0
3 years ago
2. Calculating density of an object with a regular shape
Tatiana [17]

D= 0.10125kg/m^3

EXPLAINATION
Density =mass/volume
D= 226.8/20 x 8 x 14
D=226.8/2240
D= 0.10125kg/m^3
Hope it was helpfull!!
6 0
3 years ago
The solubility of solid substances generally ___________ as temperature increases. The solubility of gaseous substances generall
Novay_Z [31]
The solubility of solid substances generally increase as temperature increases. The solubility of gaseous substances generally decrease as temperature increases.
3 0
3 years ago
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