What does the following code snippet demonstrate? #include #include int main() { FILE *fp; fp = fopen(“test.txt”, “a”); if (fp == NULL) { printf(“File not found\n”); return 1; } fprintf(fp, “Doing something with this line.”); fclose(fp); return 0; }

The function exit is used to terminate a process.

Which direction does the equilibrium lay?

What starting material is expected to undergo the following transformation?

What is the first step of a dissolving metal reduction of an alkyne?

For the hydration of the alkyne to the ketone, what is the intermediate species?

Chain-growth polymers are synthesized by radical polymerization of alkenes. The mechanism for a radical polymerization of alkenes is given below. Polystyrene, also shown below, is polymeric chain made up of thousands of monomeric groups with a total molecular weight of the polymer between 100,000 and 400,000 g/mol. What is the monomer used to synthesize polystyrene?

What is the monohydrochlorination product of the reaction?

What is the expected product for the reaction?

Based on the following chemical equation: 4 HCN + 5 O2  2 N2 + 4 CO2 + 2 H2O. Identify the limiting reactant and the mass of N2 produced when 100. g of HCN react with 100. g of O2.