Which elements has chemical properties that are most similar to the chemical properties of sodium

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5