00:01
Dear students, it is given tetracycline has the formula c22h24n2o8.
00:08
Safe dose for this drug is 0 .24 mole per kg per day.
00:15
A child's weight is given 45 pound and it has to administer tetracycline drug in four equally divided doses per day.
00:25
So mass of tetracycline should be present in each dose how much? we will first calculate mass of tetracycline per day for this child.
00:34
Then we will divide it by four to count the amount or to measure the amount in each dose.
00:42
So here per day we need 0 .24 mole of tetracycline per kg.
00:49
So let us first convert the body weight into kilogram.
00:53
Here we have 45 pound.
00:57
The body weight is 45 pound.
01:00
So 45 multiplied by 1 pound equal to 0 .454 kilogram.
01:06
The table shows 1 pound equal to 0 .454 kilogram.
01:11
So on multiplication it gives it is 20 .43 kilogram.
01:19
So we got the mass of the child in kilogram.
01:23
Now we have to see how many gram here we have to find out the mass of tetracycline.
01:30
Therefore let us find out the molar mass of tetracycline.
01:35
So tetracycline formula is c22h24 into o8...