Which one of these equations is balanced? a. zn + 2hcl --> zncl2 + h2 b. s8 + 24f2 --> 8sf6

a

b

a and b

neither

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Which substance has non polar covalent bonds

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2