Answer: 1:4.69
Explanation:
The ratio can be expressed as:
Ua/Ub= √(Mb/Ma)
Where Ua/Ub is the ratio of velocity of hydrogen to carbon dioxide and Ma is the molecular mass of hydrogen gas= 2
Mb is the molecular mass of CO2 = 44
Therefore
Ua/Ub= √(44/2)
Ua/Ub = 4.69
Therefore the ratio of velocity of hydrogen gas to carbon dioxide = 1:4.69
which implies hydogen is about 4.69 times faster than carbon dioxide.
<h3>
Answer:</h3>
22.06 Hours
<h3>
Explanation:</h3>
- Half life is the time it takes for a radioactive material or isotope to decay by half of its initial amount.
We are given;
Radioactive isotope Iodine-133
Initial counts per minute = 3150 counts
Counts after decay = 3055 per minute
Time taken = 1 hour
But, we know that to calculate the remaining amount of the radioactive isotope, then,
Remaining amount = Initial amount × 0.5^n , where n is the number of half-lives.
Therefore;
3055 counts = 3150 × 0.5^n
0.5^n = 0.9698
To get n
n = log 1 ÷ log 0.9698
= 0.044
But, n is given by dividing time and the number of half lifes
Therefore, half life = time ÷ Number of half lives
= 1 hour ÷ 0.044
= 22.60 hours
Therefore, the half life of iodine-133 is 22.60 hours
Given the criteria, there are six because there are three Carbon dioxide molecules and di means two; so two times three us six. But if u look at the whole reaction *pictured below* u will see that in the entire reaction there are 10 Oxygen reacting through the whole thing.
*the triangle is the Greek letter delta and it symbolizes heat in a reaction.
There can be 2 electrons in one orbital max