Jenny wanted to make 3 molecules of a substance made with aluminum and oxygen. how many aluminum and oxygen atoms will she need? a) 1 aluminum; 1 oxygen b) 2 aluminum; 3 oxygen c) 3 aluminum; 6 oxygen d) 6 aluminum; 9 oxygen this my 3rd question of the sadly.

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.