<span>CH3CH=C(CH3)CH(CH3)2
Start the carbon count at the end closest to the most important element, the double bond. I would recommend drawing the skeletal structure too so you can see where carbons are attached and how long the chain is.
3,4- dimethyl-2-pentene
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The new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M
HOW TO CALCULATE CONCENTRATION:
- The concentration of a diluted solution can be calculated using the following formula:
C1V1 = C2V2
Where;
- C1 = initial concentration
- C2 = final concentration
- V1 = initial volume
- V2 = final volume
- According to this question, a solution of NaCl has 400.0 mL of a 0.425 M solution and diluted to 900.0 mL. The new concentration is as follows:
400 × 0.425 = 900 × C2
170 = 900C2
C2 = 170 ÷ 900
C2 = 0.189M
- Therefore, the new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M.
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Yes it did hope this helps
Answer:
The answer to your question is: Molecular formula = C₁₈H₂₄O₂
Explanation:
Estradiol
C = 79.37 %
H = 8.88 %
O = 11.75 %
Molar mass = 272.37
Process
Carbon = 79.37 g
Hydrogen = 8.88 g
Oxygen = 11.75 g
12 g of Carbon ----------------- 1 mol
79.37 g ---------------- x
x = (79.37 x 1) / 12
x = 6.61 mol
1 g of Hydrogen ---------------- 1 mol
8.88 g ---------------- x
x = (8.88 x 1 ) / 1
x = 8.88 mol
16 g of Oxygen ------------------ 1 mol
11.75 g ----------------- x
x = (11.75 x 1) / 16
x = 0.73
Divide by the lowest number of moles
Carbon = 6.61 / 0.72 = 9.2
Hydrogen = 8.88 / 0.73 = 12.2
Oxygen = 0.73/0.73 = 1
Empirical formula
C₉H₁₂O₁
MW of the empirical formula = (12 x 9) + (12 x 1) + (16 x 1)
= 136 g
Divide molar mass of estradiol by the molar mass of the empirical formula.
= 272 / 136
= 2
Then the molecular formula is:
2(C₉H₁₂O) = C₁₈H₂₄O₂
Ke=1/2 × m × v²
Ke= 1/2 × 150 × 15² = 16,875