When you are doing dilutions the larger number is always the total final volume. The smaller number is the amount of the solute. The larger number minus the smaller number is the amount of the solvent. So a 1:5 or a 1 IN 5 dilution would be 1 part solute and 4 parts solvent to come to a total volume of 5.
When referencing ratios in mathematics 1:5 means 1 TO 5. The ratio is relative to the two items. For every 1 of the first you have 5 of the second.
It is critical if you are making dilutions to understand the difference as the two explanations are not interchangeable.
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When you are doing dilutions the larger number is always the total final volume. The smaller number is the amount of the solute. The larger number minus the smaller number is the amount of the solvent. So a 1:5 or a 1 IN 5 dilution would be 1 part solute and 4 parts solvent to come to a total volume of 5.When referencing ratios in mathematics 1:5 means 1 TO 5. The ratio is relative to the two items. For every 1 of the first you have 5 of the second.It is critical if you are making dilutions to understand the difference as the two explanations are not interchangeable.
The geometric mean of 10 and 12 is: 10.9544511501
The geometric mean of 10 and 20 is 14.1421356237
MEAN = ( 8+10 )/2 = 18/2 =9
1/10 + 1/10 = 2/10 = 1/5.