Answer:
(1) 720 seconds (2) 10800 seconds (3) 17 dozens (4) 1.45 x [tex]10^{25}[/tex] (5) 13.29 moles
Explanation:
(1) 720 seconds
1 minute = 60 seconds
12 minutes = 720 seconds (12 x 60)
(2) 10800 seconds
1 hour = 60 minutes 1 minute = 60 seconds
3 x 60 = 180 minutes in 3 hours
180 x 60 = 10800 seconds in 180 minutes that are in 3 hours
(3) 17 dozens
1 dozen = 12
204 ÷ 12 = 17 dozens
(4) 1.45 x [tex]10^{25}[/tex]
8.00 moles CO2 x [tex]\frac{3 moles atoms}{1 moles CO2}[/tex] = 24.0 moles atoms
24.0 moles x [tex]\frac{6.022 × 10^{23} }{1 mole} }[/tex] = 1.45 x [tex]10^{25}[/tex]
(5) 13.29 moles
sorry but I'm not fully sure if this one is correct
8 x [tex]10^{24}[/tex] x [tex]\frac{1 mole}{6.02 × 10^{23} }[/tex] = 13.29 moles
