Answer: c
Explanation:
during the industrial revolution americans were switching from rural to urban life, thus using up more fossil fuels, and working in factories
Divide by 1000
145÷1000=0.145
Hope this will be helpful.
Each offspring organism will contain 28 chromosomes
The existence of spectra can help the existence of atoms by expanding and multiplying in the law of London Dispersion
Answer:
C₃H₈
Solution:
Step 1: Calculating Moles for each Element:
C = Mass of CO₂ × (1 mol of CO₂÷ M.Mass of CO₂) × (1 mol of C ÷ 1 mol of CO₂)
C = 2.641 g × (1 mol of CO₂÷ 44.011 g.mol⁻¹) × (1 mol of C ÷ 1 mol of CO₂)
C = 0.0600 mol
H = Mass of H₂O × (1 mol of H₂O ÷ M.Mass of H₂O) × (2 mol of H ÷ 1 mol of H₂O)
H = 1.442 g × (1 mol of H₂O ÷ 18.106 g.mol⁻¹) × (2 mol of H ÷ 1 mol of H₂O)
H = 0.159 mol
Step 2: Calculate the Smallest whole number ratio as,
C H
0.0600 0.159
0.0600/0.0600 0.159/0.0600
1 2.654
Multiply ratio by 3,
3 7.96
Or,
3 ≈ 8
Result:
Empirical Formula of Propane is C₃H₈
