B. The time is likely between 40 - 80 seconds.
<u>Explanation:</u>
One group of students were asked to leave a whole mint in their mouth, not moving it around, and let it dissolve, which takes very long time to dissolve since there is lower frequency of collision among the saliva particles and mint.
Another group swirled a whole mint around in their mouths, so the frequency of collision between the saliva and the mint particles increases, there by increase in dissolving capacity, but the timing will be lesser when compared to other groups used mints broken into smaller pieces.
So the time for swirling is likely between 40 - 80 seconds.
Bryophytes are an informal division that consists of 3 groups of non-vascular plants, namely mosses, liverworts, and hornworts. Prominent bryophytes characteristics are the absence of true roots stems and leaves.
A few characteristics are common between protists:
They are eukaryotic, which means they have a nucleus.
Most have mitochondria.
They can be parasites.
They all prefer aquatic or moist
environments.
For classification, the protists are divided into three groups:
Animal-like protists, which are heterotrophs and have the ability to move.
Plant-like protists, which are autotrophs that photosynthesize.
Fungi-like protists, which are heterotrophs, and they have cells with cell walls and reproduce by forming spores.
Answer:
5 atm
Explanation:
Gay-Lussac's Law states that pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature.
P1 / T1 = P2 / T2
Plug the information given in and you get
(10atm)(10 K)=(P2)(20K)
Divide both sides by 20 K and you get the unknown pressure which is 5 atm.
Answer : The expression for solubility constant for this reaction will be,
Explanation :
Solubility product : It is defined as the product of the concentration of the ions that present in a solution raised to the power by its stoichiometric coefficient in a solution of a salt. This takes place at equilibrium only.
The solubility product constant is represented as, .
The dissociation of calcium phosphate is written as:
The expression for solubility constant for this reaction will be,
It is directly proportional