Black holes….. universe……. radiation……. time
We have to discuss here whether mole should be considered as a base unit in SI system or not.
The answer is- mole is considered as base unit in SI system.
There are seven base units in the SI system. They are- kilogram (kg) for mass, second (s) for time, kelvin (K) for temperature, ampere (A) for electric current, mole (mol) for the amount of substance, candela (cd) for luminous intensity and meter (m) is for distance.
Mole is defined as the amount of substance that contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12. One mole contains exactly 6.022 X 10²³ elementary entities.
This number 6.022 X 10²³ is the fixed numerical value which is called Avogadro number which is universally accepted number. Hence mole is also base unit in the SI system.
Answer:
d-block
Explanation:
Many scientists describe a "transition metal" as any element in the d-block of the periodic table, which includes groups 3 to 12 on the periodic table. In actual practice, the f-block lanthanide and actinide series are also considered transition metals and are called "inner transition metals".
Answer:
The turnover number is the maximum substrate quantitiy converted to product per enzyme and per second. It can be calculate as follows:
![k_c = \frac{V_{max}}{[E]}](https://tex.z-dn.net/?f=k_c%20%3D%20%5Cfrac%7BV_%7Bmax%7D%7D%7B%5BE%5D%7D)
with ![[E]](https://tex.z-dn.net/?f=%5BE%5D)
active enzyme concentration.
In this case we have Vmax an data to calculate
![[E]=\frac{3.38*10^{-14}}{0.01 L}=3.38*10^{-12} M](https://tex.z-dn.net/?f=%5BE%5D%3D%5Cfrac%7B3.38%2A10%5E%7B-14%7D%7D%7B0.01%20L%7D%3D3.38%2A10%5E%7B-12%7D%20M%20)
Now 
it is not like any option.
If we assume that 
have the non usual units of 
and it is 
So we need divide by the moles of E (in place of [E])
Now 
(pass from 
to 
dividing by 60)
2nd family
calcium is in the second family
