Actividad 2.Diferenciar entre elemento y compuestoCompletar la tabla identificando con una x si la sustancia es elemento o compuesto. FórmulaElementoCompuestoN° de átomosN° de moléculasHO2H2PO4 H2ONH3AlCoCO

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?