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masha68 [24]
3 years ago
7

Explain why vigorous exercise causes the heart rate to increase and you to also breathe faster.

Chemistry
1 answer:
patriot [66]3 years ago
3 0

Answer:

When you are exercising, your muscles need extra oxygen—some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing.

Explanation:

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As Jesse's hybrid accelerates to pass a car on the highway, he notices that his gas mileage drops from 40 miles per gallon to 15
e-lub [12.9K]
The most likely explanation for this observation is C. his car has turned on more pistons to provide the extra energy needed to accelerate.

When cruising, hybrid cars are able to employ electrical energy to drive the car. Moreover, even if a vehicle is not a hybrid, a greater amount of fuel is consumed when one accelerates because the vehicle has to generate a force larger than the force of air resistance in order for it to accelerate. This increased demand of force reduces the vehicle's fuel economy.
7 0
3 years ago
Read 2 more answers
What is the mass of bismuth carbonate (597.99 g/mol) that decomposes to release 50.0ml of carbon dioxide gas at stp? 0.000445 g
REY [17]

The mass of bismuth carbonate that decomposed is 0.445 g


calculation

write the equation for reaction


that is Bi2(CO3)3 → Bi2O3 +3 CO2



find the moles of of CO2 formed


At STP 1 mole of a gas = 22.4 L

what about 50 Ml


convert the Ml to Liters = 50/1000= 0.05 L


moles of CO2 formed is therefore= 1 mole x 0.05 L/22.4 l =2.232 x10^-3 moles


by use of reacting ratio between Bi(CO3)3 to CO2 which is 1:3 the moles of Bi(CO3)3 is = 2.232 x10^-3 x1/3= 0.744 x10^-4 moles of Bi(CO3)3


mass of Bi(CO3)3 = molar mass x number of moles


mass= 0.744 x10^-4 moles x 597.99 g/mol = 0.445 grams


5 0
3 years ago
Salts are also knows as<br><br> atoms<br> elements<br> covalent compounds<br> ionic compounds
Nat2105 [25]
<span>Ionic compounds

Hope this helps! :)</span>
6 0
3 years ago
What are the properties of elements related to?
balu736 [363]
The answer you are looking for is A. the average atomic mass hope this helped have a nice day :)
3 0
3 years ago
The process by which organisms makes more<br> organisms like themselves is called
kondor19780726 [428]

Answer:

Reproduction

Explanation:

Reproduction is the biological process by which new “offspring” (like organisms) are produced from their “parents" (the original organism)

7 0
3 years ago
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