Sound intensity level when a second riveting gun operate
A riveting gun in a shipyard is producing 95 dB of noise. What is the sound intensity level when a second riveting gun begins to operate?
a) 96 dB
b) 98 dB
c) 107 dB
d) 145 dB
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Esterification using carboxylic acid andalcohol requires an acid catalyst.In an experiment the acid form ofan ion-exchange resin is used. This resin, in the form of smallbeads, is a cross-linked polystyrene that bears sulfonic acidgroups on some o
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