ment 18.0 m above the groundThe crane that is doing the lifting produces a steady power of 4.00 multiplied by 102 WHow much time does it take to lift the piano?
(120 x 9.8) 1176Nweight(1176 x 18) 21,168 joules work(21,168)/400 52.92 secs.
i'm not sure volume would be the right unitok this is what i got: Mwt of Al is 26.98 g/mol and we have 1.55g which is .057moles of Al ratio is 2Al:3O_2 so 2/3 .057mole/X cross multiply 2x.17 x.o86 moles of O2 Mwt of O2 is 32g/mol so .086mol times 32 g/mol 2.76g of O2 STP is 0 degree C and 1 atm but the volume is entirely dependent on the container
