Carbon has 4 valence electrons, oxygen has 6
Answer:
Mass of chemical = 1.5 mg
Explanation:
Step 1: First calculate the concentration of the stock solution required to make the final solution.
Using C1V1 = C2V2
C1 = concentration of the stock solution; V1 = volume of stock solution; C2 = concentration of final solution; V2 = volume of final solution
C1 = C2V2/V1
C1 = (6 * 25)/ 0.1
C1 = 1500 ng/μL = 1.5 μg/μL
Step 2: Mass of chemical added:
Mass of sample = concentration * volume
Concentration of stock = 1.5 μg/μL; volume of stock = 10 mL = 10^6 μL
Mass of stock = 1.5 μg/μL * 10^6 μL = 1.5 * 10^6 μg = 1.5 mg
Therefore, mass of sample = 1.5 mg
Answer:
8.72×10^5
Explanation:
Answered it in the comments! ^^
Answer:
Explanation:
- The atomic number of Oxygen is 8.
- The relative atomic mass is approximately 16.
- It has 8 number of protons.
- It has 8 number of neutrons ( Atomic Mass - number of protons).
- Oxygen has 6 valence electrons.
- It has 2 energy shells, two electrons occupy the first energy shell while six electrons occupy the second energy shell.
Answer:
I believe it would be a solution I could be wrong tho
Explanation:
