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SpyIntel [72]
4 years ago
13

How does your pattern of breathing change when you exercise and then rest ?​

Chemistry
1 answer:
Paladinen [302]4 years ago
7 0

Your pattern of breathing increases, making it faster than usual, when you're exercising because you're pushing your body to work harder and speeding up your heart rate making you tired.

When you're resting your breathing pattern should be steady and normal since you aren't doing anything that requires lots of body work or something that would make you out of breath.

Hope this helps,

Davinia.

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at 55 years what mass remains of a 200.0 g sample of a radioactive isotope with a half life of 10.0 years
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Answer:

4.419 g

Explanation:

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If a particular ore contains 58.5% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosph
alina1380 [7]
Calcium Phospate formula: Ca3(PO4)2

Atomic weight:
Ca = 40  ; P = 31 ; O = 16

Ca3  = 40 * 3 = 120
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O4 = 16 * 4 = 64
(PO4)2 = (31 + 64) * 2 = 95 * 2 = 190

Ca3(PO4)2 = 120 + 190 = 310 g/mol

31/310 = 10% P in the calcium phospate

1.00kg * 1000 g/kg = 1000 g of phosphorus.

1000 g / 10% = 10,000 g of calcium phosphate

10,000 g / 58.5% = 17,094 grams of ore.

The minimum mass of the ore should be 17,094 grams or 17.094 kg.
5 0
3 years ago
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luda_lava [24]

a because the spoon is a solid and the hot chocolate is a liquid.So that means that spoon moves slower than a liquid.


                                                                                                        

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