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What is the percent composition by mass of sodium bicarbonate
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Chemistry
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- Caffeine, a stimulant in coffee and tea, has a molar mass of 194.19 g/mol and a mass percentage composition of 49.48% C, 5.19% H, 28.85% N, and 16.48% O. What is the molecular formula of caffeine? 1. C4H4N40 2. САН4N1002 3. C2H10N3O2 4. C3H10N4O2 5. C3H10N4O2 6. C4H;N2Oarrow_forwardCaffeine (MW 194.2 g/mol) is a stimulant found in coffee, tea, many soft drinks, and chocolate. Elemental analysis of caffeine shows 49.47 mass % C, 5.19% H, 28.86% N, and 16.48% O. What is the molecular formula of caffeine? Use the following amu: C = 12 g/mol; H = 1 g/mol; N = 14 g/mol; O = 16 g/mol (Please type answer no write by hend)arrow_forwardA substance, AzB, has the composition by mass of 60% A and 40%B. What is the composition of AB2 by mass? a) 40%A, 60%B b) 50%A, 50%B c) 27%A, 73%B d) 33%A, 67%B e) 27%A. 73%B 80arrow_forward
- what is the mass percent of fluorine in C2Cl4F2 9.323% 11.78% 69.58% 18.65% or 5.893%arrow_forwardCalculate the percent composition for C6H5NH2? C=77.38% H=7.58% N=14.04% C=76.33% H=7.11% N=7.04% C=23.38% H=14.7% N=15.04% C=77.38% H=7.58% N=15.04% None of the above 20 Calculate the molar mass of Cr4(P207)3. a. 729.8 g/mol b. 733.7 g/mol c. 645.33 g/mol d. 677.9 g/mol e. None of the abovearrow_forward10) What is the mass in grams of 0.852 moles of ferric oxide (Fe,Og) ? A) 136 g B) 17 g C) 5.34 x 10-3garrow_forward
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