Which one of the following compounds is an example of a covalent molecule? a) nacl b) h2o c) koh d) al(no3)3

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by