no
1 kg = 1000 grams
1 gram = .001 kg
After 76 seconds, half of the radium-222 would have decayed (its half-life is about 3.8 days). Therefore, the quantity of radium-222 remaining in the 12-gram sample would be 6 grams.
reference table N: Half Life of Rn-222 is 3.823d = 8/3.823 = # of Half lives = 2.09 (roughly 2) 20g-> 40g-> 80g doesn't say anything about decay so assume to increase since how much will remain in 8days Ans: 80g
1 kg = 2.20462 pounds 222 kg x 2.20462 pounds/kg = 489.4 pounds The formula to convert kg to lbs 222 kg* 2.2046 lbs 1 kg = 489.4262221 lbs you may try the online converter linked below
222 kg is equivalent to approximately 34.8 stones.
The equation for the alpha decay of radon-222 takes the following form. Radon-222 ----> He + Polonium. In an alpha decay, the atom loses 2 neutrons and 2 protons.
There are approximately 7.83 ounces in 222 grams.
7.64 it is the half life of radon-222 multipled by 2
7.64 days
222 pounds = 100.698 kilograms or 100 kilograms 697.506 grams1 pound ~= 0.45359 kilograms1 kilogram ~= 2.2046 pounds
After 76 seconds, half of the radium-222 would have decayed (its half-life is about 3.8 days). Therefore, the quantity of radium-222 remaining in the 12-gram sample would be 6 grams.
111 is 111 fewer than 222.
Radon-222 has a half-life of about 3.8 days. To calculate the time required for 200 grams of radon-222 to decay to 50 grams, you can use the formula: [N = N_0 \left(\frac{1}{2}\right)^{\frac{t}{t_{1/2}}}] where N is the final amount (50 grams), N0 is the initial amount (200 grams), t is the time in days, and t1/2 is the half-life. Solving for t gives around 7.6 days.
222 is more than 100 times larger than 2.20462.
It is: 2461
No. Think of it like this. 0.222's fraction form is 222/1000 and 0.25's fraction form is 25/100. To compare, you need to make them the same denominator. So 25/100 turns into 250/1000. Now what is bigger 222/1000 or 250/1000?
Less than because when you multiply 6 cereal bars by 37 g./bar you get 222 g. Convert 222 g. to kg and it is .222 kg.
222 plus 222 equals 444.