He compound known as butylated hydroxytoluene, abbreviated as bht, contains carbon, hydrogen, and oxygen. a 3.376 g sample of bht was combusted in an oxygen rich environment to produce 10.11 g of co2(g) and 3.312 g of h2o(g) . insert subscripts to complete the empirical formula of bht.

Its empirical formula is the same as it molecular formula - C15H24O.

Explanation:

Equation: BHT + O2 → CO2 + H2O

moles of CO2 = mass/ molar mass = 10.11 / (12+16x2) = 0.23 mol

moles of H2O = mass/ molar mass = 3.312 / (1x2+16) = 0.184 mol

The elements are conserved during reaction. BHT is formed from three elements Carbon, Oxygen and Hydrogen.

We have: mass of BHT = mass of Carbon element + mass of Hydrogen element + mass of Oxygen element.

moles of Carbon (in BHT) = moles of CO2 = 0.23 mol.

⟹ mass of Carbon = moles x molar mass = 0.23 x 12 = 2.76 gram

moles of Hydrogen (in BHT) = 2 x moles of H2O = 0.184 x 2 = 0.368 mol

⟹ mass of Hydrogen = 0.368 x 1 = 0.368 gram

⟹ mass of Oxygen (in BHT) = 3.376 -0.368-2.76 = 0.248 gram

⟹ moles of Oxygen (in BHT) = 0.248/32 = 0.0155 mol

Ratio

C : H : O = 0.23 : 0.368 : 0.0155 = 15 : 24 : 1

So the formula of BHT is C15H24O

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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