answer 2-4 please

Show ALL. WORK in the "Answer Here" boxes, and include UNITS (including % ) when necessary. 1. A compound contains 40.68% carbon, 5.08% hydrogen, and 54.24% oxygen. Find: 2. 170.0g of an unidentified sample contains 29.84g sodium, 67.49g chromium, and the rest is oxygen. Determine (Round to the tenths place): 3. A 1.600g sample of a chromium-oxygen compound contains 1.095g of chromium. 4. What is the percent composition of glucose (C6H12O6). (Round to the tenths place)