3. Balance the equation for the reaction between
butane (C4H10) and oxygen, and then determine
how many grams of CO2 are formed when
5.00 grams of C4H10 react.
(A) 1.65 grams (B) 3.79 grams
(C) 15.1 grams (D) 20.0 grams
(E) 26.4 grams

Ithink the answer is c but then again i'm probably wrong

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst.