Glucose is a carbonate that your body can burn for fuel. It is 40 percent C and 6.71 percent H by mass. The rest is O. What is the empirical…

a)Glucose is a carbonate that your body can burn for fuel. It is 40 percent C and 6.71 percent H by mass. The rest is O. What is the empirical formula of glucose
b)The molar mass of glucose os 180.0 g/mol. what is the molecular formula.
I’ve been having a tough time with these two question, need help figuring formula