British scientists might of solved  one of chemistry’s most difficult i ssues: the creation of a synthetic  leaf.  

Researchers at the Occidental Res earch Bureau has struggled for thre e decades to produce a man-made lea f able to absorb CO₂ from the atmos phere and convert it into chemical  energy. Yet now it seems that they  have at long last achieved their go al.

 

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50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2