what volume did a helium-filled balloon have at 16 °c and 3.03 atm if it’s new valine was 85.3 ml at 3.67 atm and 4.7 °c

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

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Acontrol during an experiment. might change remains constant does not exist does change