Electronic configure = [He} 1s₂ , 2s₂ , 2p₂
<u>Answer:</u> The molarity of solution is 0.34 M.
<u>Explanation:</u>
- To calculate the number of moles, we use the equation:
<u>For lead chloride:</u>
Given mass of lead chloride = 18.86 g
Molar mass of lead chloride = 278.1 g/mol
Putting values in above equation, we get:
- For the balanced chemical equation:
By Stoichiometry of the reaction:
1 mole of lead chloride is formed by 1 mole of lead nitrate
So, 0.068 moles of lead chloride will be formed from = of lead nitrate
- To calculate the molarity of solution, we use the equation:
We are given:
Volume of solution = 200 mL = 0.200 L (Conversion factor: 1 L = 1000 mL)
Moles of lead nitrate = 0.068 moles
Putting values in above equation, we get:
Hence, the molarity of solution is 0.34 M.
Answer:
plasma membrane is the cell part which control entry or exit into the cell as it is selectively permeable (allow only selective molecules to enter or exit
The correct answer is 12.2% BaO.
The solution is found by dividing the mass of the BaO, which is 25.8 grams, by the total mass of the solution, which is 212 grams, then multiplying it by 100 to get the percentage:
Answer:
the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
Explanation:
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