Solutions that have more or greater concentration of hydroxide ions (OH-) than hydrogen ions (H+) are basic or alkali in nature. They showcase the properties of a base and not of an acid.

4 0

3 years ago

High doses of caffeine interfere with the dna replication checkpoint mechanism in mammalian cells. why then do you suppose the s

Kipish [7]

Molarity = $\frac{Solute(in Moles)}{Solution (in Liters)}$

Moles of Caffeine = Mass of Caffeine/Molar Mass
Mass = 100 mg = 0.1 g
Molar Mass = 196 g/mole

Moles of Caffeine in one cup = 0.1/196 moles
= 5.102 * 10^-4 moles

If one cup of coffee is ingested (A typical adult contains about 40 liters of water),

Molarity of caffeine = [(5.1 * 10^-4)/ 40] M
= 0.012755 mM

The toxic molarity of caffeine in the body 10mM

How many cups will be toxic?
= Toxic Molarity/ Molarity of 1 cup
= 10/ 0.012755
= 784

In other words, you would have to drink 784 cups of coffee to reach the dose required to interfere with the DNA replication checkpoint mechanism.

8 0

4 years ago