In presence of an electrical or a magnetic field cathode rays deviates
Cathod rays are electron containing rays
Answer:
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Answer:
There is no ionic compound made of carbon and oxygen. This is because of the fact that both of them are non metals. Two non metals cannot ionize each...
Answer:
- <em>The molecular formula </em>is C₃H₆
Explanation:
<u>1) Assume 100 g of substace:</u>
- Carbon, C: 85.64% × 100 g = 85.64 g
- Hydrogen, H: 14.36% × 100 g = 14.36 g
<u>2) Convert the masses in grams to number of moles</u>
- moles = mass in grams / atomic mass
- atomic mass of C: 12.011 g/mol
- atomic mass of H: 1.008 g/mol
Calculations:
- C: 85.64 g / 12.011 g/mol = 7.130 mol
- H: 14.36 g / 1.008 g/mol = 14.25 mol
<u>3) State the ratio of moles.</u>
Divide the number of moles of each element by the least number of moles:
- C: 7.130 mol / 7.130 mol = 1.0 mol
- H: 14.25 mol / 7.130 mol = 2.0 mol
<u>4) Set the empirical formula:</u>
<u>5) Calculate the mass of one mol of the empirical formula:</u>
- CH₂: 12.011 g/mol + 2× 1.088 g/mol = 14.027 g/mol
<u>6) Calculate how many times the mass of the empirical formula is contained in the mass of the molecular formula:</u>
- 42.08 g / 14.027 g = 2.9999 = 3
<u>7) Set the molecular formula:</u>
Multiply each subscript of the empirical formula by the previos ratio: 3
<u>Conclusion</u>: <em>the molecular formula is</em> C₃H₆