Answer:
Molecular formula = C₆H₄Cl₂
Explanation:
Given data:
Percentage of hydrogen = 2.7%
Percentage of carbon = 49%
Percentage of chlorine = 48.2%
Molar mass of compound = 150 g/mol
Molecular formula = ?
Solution:
Number of gram atoms of H = 2.7 / 1.01 = 2.67
Number of gram atoms of Cl = 48.2 / 16 = 1.36
Number of gram atoms of C = 49 / 12 = 4.08
Atomic ratio:
C : H : Cl
4.08/ 1.36 : 2.67/1.36 : 1.36/1.36
3 : 2 : 1
C : H : Cl = 3 : 2 : 1
Empirical formula is C₃H₂Cl.
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = 12×3 + 1.01 ×2 + 35.5 = 73.52 g/mol
n = 150 / 73.52
n = 2
Molecular formula = n (empirical formula)
Molecular formula = 2 (C₃H₂Cl)
Molecular formula = C₆H₄Cl₂
Write out the equation find the mols which should be the atomic mass
Answer:
0.25
Explanation:
The rate law for the reaction:
2A(g) + 2B(g) ⟶ 2A(g) + 2B(g)
has been determined to be rate = k[2A]2[2B]. What are the orders with respect to each reactant, and what is the overall order of the reaction?
Answer:
order in 2A= 0.15; order in 2B = 0.10; overall order = 0.25
Sustainable living is a lifestyle adopted by individuals or societies which is geared towards reducing the consumption of earths natural resources. The idea is to lower the carbon footprint by switching to sustainable modes of transport, living spaces, food consumption etc.
In the given passage, the sentences that describe sustainable living are:
1) 'I plan to buy a hybrid for better gas mileage': Since a hybrid is a combination of a petrol engine and an electric motor, it reduces the consumption of fuel and is more energy efficient.
2) 'I am able to carpool with a couple of friends from work' : Carpooling reduces the vehicles on road thereby reducing vehicle exhaust.
3) 'The architects received a LEED certification': LEED certified buildings are energy efficient constructions.
Air will try to expand and will use every little bit of space to stuff more air in like a chipmunk.
Duhh!
