Cortisol (μ=362.47 g/mol), one of the major steroid hor-mones, is a key factor in the synthesis of protein. Its profound ef-fect on the reduction of inflammation explains its use in thetreatment of rheumatoid arthritis. Cortisol is 69.6% C, 8.34% H,and 22.1% O by mass. What is its molecular formula?

One medication used to treat diabetic kidney disease, high blood pressure, and heart failure is made up of C, H, N, and O. It is 63.8% C, 7.45% H, and 21.3% O by mass. What is the empirical formula of this medication?

The calcium ion is a dietary mineral essential to good nutrition. Calcium is necessary for the health of muscles, the heart, and the digestive system; is the building material of bones; and supports the synthesis and function of blood cells. The main dietary source of calcium is calcium carbonate. The recommended daily allowance (RDA) for calcium is 1.20×10^6 μg/day. How much calcium carbonate (40.04 %% CaCa ) should be consumed to meet the RDA?

Caffeine, an extremely popular chemical amongst students and teachers alike, is composed of four elements: carbon,hydrogen, nitrogen, and oxygen. Combustion analysis of caffeine indicates that it is composed of 49.48 % carbon,5.19 % hydrogen, 28.85 % nitrogen, and 16.48 % oxygen. Mass spectrometry separately reveals that the molecularmass of the compound is 194.19 g/mol. Determine the empirical and molecular formula of caffeine. How do I determine it?

What is the molecular formula of the following compound? Empirical formula: CH2 (ℳ = 112.24 g/mol):

EDTA, which is short forethylenediaminetetraacetic acid, is a chemical used inthe textile industry to prevent metal impurities fromchanging the colours of dyed products. Th e empiricalformula for EDTA is C5H8NO4. Th e molar mass ofEDTA is 292.24 g/mol. What is its molecular formula?

Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention of heart attacks. How many grams of aspirin are present in a sample that contains 0.0745 moles?

Please answer these questions on your Page 6 (a) The percent composition of an unknown substance is 46.43% C, 25.77% O, 18.05% N, and 9.74% H. What is its empirical formula? The molar masses of C, O, N, and H are 12.01, 16.00, 14.01, and 1.01 g/mol. (b) What total mass of CO₂(g) and H₂O(1) is produced by the complete combustion (the reaction with O₂(g) to produce these two products) of 44.4 g of C4H₁0O(1)? The molar masses of C, O, and H are 12.01, 16.00, and 1.01 g/mol.

Balance each of the following skeletal equations. C6H14(g) + O2(g) ------> CO2(g) + H2O(g)

Conine (M = 127.23 g/mol), a substance isolated from poison hemlock, contains only carbon, hydrogen, and nitrogen. Combustion of 5.024 mg of conìine yields 13.90 mg COz and 6.048 mg of H2O. What are the empirical and molecular formulas ofconine?