Answer:
b. 17,190
Explanation:
Using the formula for C-14 dating,
![t=\dfrac{ln(\dfrac{N}{N_0})t_\frac{1}{2} }{-0.693}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7Bln%28%5Cdfrac%7BN%7D%7BN_0%7D%29t_%5Cfrac%7B1%7D%7B2%7D%20%20%7D%7B-0.693%7D)
where Present Value N =1/8 of Parent Sample
Initial Value,
=1
Half Life,
=5730 years
![t=\dfrac{ln(\dfrac{1/8}{1})5730}{-0.693}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7Bln%28%5Cdfrac%7B1%2F8%7D%7B1%7D%295730%7D%7B-0.693%7D)
=17,190
Therefore the fossil is about 17190 years old.
Answer:
Due to random assortment and incomplete dominance of alleles.
Explanation:
The bunnies end up with ear thicknesses that are different from one another due to random assortment of alleles during gamete formation according to Mendel.
In addition to random assortment, the allele for thick ear also displayed what is known as incomplete dominance over the allele for thin ear to arrive at an average ear thickness.
Answer:
because they devlop our organs
Answer: The rate increases 3 times on raising the temperature from 20degree to 30 degree
Explanation:
According to Arrhenius equation with change in temperature, the formula is as follows.
![ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}]](https://tex.z-dn.net/?f=ln%20%5Cfrac%7Bk_%7B2%7D%7D%7Bk_%7B1%7D%7D%20%3D%20%5Cfrac%7B-E_%7Ba%7D%7D%7BR%7D%5B%5Cfrac%7B1%7D%7BT_%7B2%7D%7D%20-%20%5Cfrac%7B1%7D%7BT_%7B1%7D%7D%5D)
where
= rate constant at temp ![T_2](https://tex.z-dn.net/?f=T_2)
= rate constant at temp
= activation energy
R= gas constant
= temperature = ![20^0C=(20+273)K=293K](https://tex.z-dn.net/?f=20%5E0C%3D%2820%2B273%29K%3D293K)
= temperature = ![30^0C=(30+273)K=303K](https://tex.z-dn.net/?f=30%5E0C%3D%2830%2B273%29K%3D303K)
![ln \frac{k_{2}}{k_{1}} = \frac{-85\times 1000J/mol}{8.314J/Kmol}[\frac{1}{303} - \frac{1}{293}]](https://tex.z-dn.net/?f=ln%20%5Cfrac%7Bk_%7B2%7D%7D%7Bk_%7B1%7D%7D%20%3D%20%5Cfrac%7B-85%5Ctimes%201000J%2Fmol%7D%7B8.314J%2FKmol%7D%5B%5Cfrac%7B1%7D%7B303%7D%20-%20%5Cfrac%7B1%7D%7B293%7D%5D)
![ln \frac{k_{2}}{k_{1}}=1.15](https://tex.z-dn.net/?f=ln%20%5Cfrac%7Bk_%7B2%7D%7D%7Bk_%7B1%7D%7D%3D1.15)
![\frac{k_{2}}{k_{1}}=3](https://tex.z-dn.net/?f=%5Cfrac%7Bk_%7B2%7D%7D%7Bk_%7B1%7D%7D%3D3)
Thus rate increases 3 times on raising the temperature from 20degree to 30 degree
Chemical change occur when two substances are combined and produces a new substance or decomposes into two or more substances which are entirely different from the original two substances.
There are three types of chemical changes. These are 1) Inorganic Changes, 2) Organic Changes, and 3) Biochemical Changes
Here are some examples of chemicsal changes.
If you combine Sodium and Water, chemical changes causes decomposition into Sodium Hydroxide and Hydrogen.
Sodium + Water ==> Sodium Hydroxide and Hydrogen
Na + H2O ====> NaOH and H
Another example of chemical change is:
Carbon Dioxide and Water will decompose into Sugar and Oxygen
Carbon Dioxide + Water ==> Sugar and Oxygen
CO2 + H2O ==> CnH2nOn (where n is between 3 and 7) and O