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astultz309459
05.05.2020 •
Chemistry
The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). If you breathe 17 times a minute (at rest), taking in and exhaling 0.50 L of air with each breath, what volume of air do you breathe each day?
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Ответ:
The volume of the air breath per day is =12240 L day ^ -1 and he volume of oxygen breathe each day is= 2570.4 L
Explanation:
Complete question: The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). If you breathe 17 times a minute (at rest), taking in and exhaling 0.50 L of air with each breath, what volume of air do you breathe each day? Air is 21% oxygen by volume. what volume of oxygen do you breathe each day?
Solution
Given that,
The volume of the air with each breath = 0.50L
The frequency of breath is = 17 times per minute
the next step is to calculate the volume of the air breath per day
The volume of the breathed air = volume of air breathed/ breath * 17 breaths/min * 60 minutes / per hour * 24 hours/ per day
= 0.50L/ breath * 17 breath /min * 60 minutes / per hour * 24 hours/ per day
= 12240 L day ^ -1
The next step is to calculate the oxygen breathed per day:
The volume of oxygen breathed = volume of air breathed * percent oxygen in air/100
= 12240 L day ^ -1 * 21 /100
= 2570.4 L day ^ -1
Therefore for each day, the volume of oxygen breathe is 2570.4 L
Ответ:
Explanation:
Higher concentration means greater number of reactants in the system. Greater the number greater will be the probability of reactants to colloid. And according to collision theory reactants must colloid with optimum kinetic energy and orientation. So, in higher concentrated system the rate of collisions increases with increasing the rate of reaction.
Result:
Option A is correct answer. (The increased concentration increases the number of collisions between molecules.)