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8 October, 04:37

At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 65 mL of blood per beat. Blood has a denstity of 1060 kg / m3. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. (a) How much blood is in the body? (b) On average, what mass of blood does the heart pump with each heart beat?

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  1. 8 October, 08:14
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    Given:

    1 minute circulation

    77 beats per minute

    65 ml of blood per beat

    blood density of 1060kg/m³

    a) how much blood is in the body?

    77 beats per min * 65ml per beat = 5,005 ml per minute

    5,005ml * 1l/1000ml = 5.0005 Liters.

    I'm not sure on how to solve for question b.
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