<u>Answer:</u> The number of moles of strontium bicarbonate is ![7.5\times 10^{-9}mol](https://tex.z-dn.net/?f=7.5%5Ctimes%2010%5E%7B-9%7Dmol)
<u>Explanation:</u>
Formula units are defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is ![6.022\times 10^{23}](https://tex.z-dn.net/?f=6.022%5Ctimes%2010%5E%7B23%7D)
We are given:
Number of formula units of ![Sr(HCO_3)_2=4.55\times 10^{15}](https://tex.z-dn.net/?f=Sr%28HCO_3%29_2%3D4.55%5Ctimes%2010%5E%7B15%7D)
As,
number of formula units are contained in 1 mole of a substance.
So,
number of formula units will be contained in =
of strontium bicarbonate.
Hence, the number of moles of strontium bicarbonate is ![7.5\times 10^{-9}mol](https://tex.z-dn.net/?f=7.5%5Ctimes%2010%5E%7B-9%7Dmol)
The first compound C6H12 is cyclohexane and the other compound C6H6 is benzene. They are both aromatic compounds. Cyclohexane does not have double bonds in its ring while benzene has three double bonds in its ring. This is why the formula for cyclohexane contains 12 carbon atoms while benzene only has 6.
Answer:
D. Positively charged particles
Explanation:
Negatively charged particles are attracted to positively charged particles and repelled against negatively charged particles
In a dilute acid solution most if not all of the molecules will split into ions.
For example HCl is a strong acid and 100% of the molecules will split into
H+ & Cl-
in a weak acid solution only a portion of the molecules will turn into ions because the ionization percentage isn't as large. Which will essentially leave a high percentage of un-reacted molecules
Answer:
A. a technique that separates amino acids on the basis of their polarity
Explanation: