Half life of phosphorus-24 = 14.3 days
percent of phosphorus-24 left after 144 hours = ?
144 hours = 144/24 = 6 days
6 days/ 14.3 days = 0.42
(1/2)∧0.42 = 0.747
percent left = 0.747 x 100 = 74.7%
Answer:
The volume of the piece of the metal Gina is found to be 21
Explanation:
Given density of the metal = 10 g/
Given mass of the piece of the metal = 210 g
Assuming volume of piece of metal to be V
The expression for the density is shown below
Volume of the piece of metal = 21
Answer:
Never store used oil in anything other than tanks and storage containers. Used oil may also be stored in units that are permitted to store regulated hazardous waste. Tanks and containers storing used oil do not need to be RCRA permitted, however, as long as they are labeled and in good condition.
Fe2O3 + 3H2SO4 --> Fe2(SO4)3 + 6H2O
the coefficient is 6 as you can see