Yoann réalise l'expérience illustrée ci-dessous. Il recueille 2 litres d'air dans la bouteille par déplacement d'eau.
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a. Quel volume d'air a été prélevé dans le ballon?
b. À quelle masse correspond ce volume ?
c. Calcule la masse d'un litre d'air.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Part of a control linkage for an airplane consists of a rigid member cb and a flexible cable ab. if a force is applied to the end b of the member and causes it to rotate by θ = 0.5°, determine the normal strain in the cable. originally the cable is unstretched.

How can you improve the percent yield of copper in this lab? check all possible strategies that will you do so. measure reactants precisely. stir to the reaction take place. chill the reactants before combining them. wait patiently until the reaction completes. make sure to recover as much copper as possible.