Combustion analysis of a hydrocarbon produced 33.01 g co2 and 27.02 g h2o. calculate the empirical formula of the hydrocarbon.

The empirical formula of hydrocarbon is CH4

explanation

Hydrocarbon contain both hydrogen(H) and carbon(C)

calculate the mass of  C  and H

mass of C  from CO2= 12/44x33.01=9.003 g

mass of H from H2O =2/18 x27.02 =3.002 g

find the number  of moles of C and H

mole=mass/molar mass

moles  of C=  9.003g/12g/mol=0.7503 moles

moles of H=  3.002g /1g/mol = 3.002 moles

find the mole ratio of each element by dividing each  mole with smallest number of mole  ( 0.7503 moles)

that is C=0.7503/0.7503=1

          H=3.002/0.7503=4

therefore the empirical formula= CH4

B.Stress pulling an object is the correct answer.

Explanation:

tension is a Stress pulling an object.

Tension is stress that pulls an object and stress on any object occurs when certain force or pressure is applied to a material.

Tension force creates stress or strains on any substance.

Tension is defined as the pulling energy transferred axially by the means of a chain, by a rod or by a string when stretched tightly by forces that are working from the opposite points.