electronsii) the mass of aluminum formed from the passage of this quantity of electricityPlease go step by step I'd like to understand.
I'd do the shopping boxing day because everything will be on sale and you may be able to get her a couple extra giftsBut they like books and toys that make noise and things that they can learnabout, my niece and son really like those baby crayons, they are circle shaped so baby can hold them.
There are several steps to this calculationFirst you need to calculate the amount of electricity that passes (in Coulombs) using:- Quantity of charge (Coulombs ) Current (Amps) x Time current flows (s) So Q (C) 0.6 x 300 180 C The second step involves the equation I mole of electrons 96,500 Coulombs of charge So we have 180/ 96,500 moles of electrons 0.001865 Moles or 1.865 x 10^-3 moles of electronsIn the third step you need to know the equation for discharge of Al 3+ ions Al 3+ + 3 e- Al So 1 mole of electrons will discharge only 1/3 moles of AlThe number of moles of Al discharged 1.865 x 10^-3 /3 0.622 X 10 ^-3 or 6.22 x 10^-4moles Al Last step(honest) 1 mole of any atom has a mass to the atomic mass of the atom(27g for Al) So mass of Al discharged 6.22 X 10^-4 x 27g 0.0168g
How about a push along trolley (one with little building bricks in) we got one for our little one at that age she loved itThey are sturdy so don't tip over when they are learning to walkI always plan ahead for christmas and birthdays its easier cost wise.
