Multiple Choice
Which of the following is NOT a molecular compound?
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3. Chemical Reactions
Molecular Formula
Back3. Chemical Reactions
Molecular Formula
- Open Question
A compound is 43.7% phosphorus and 56.3% oxygen. The formula mass of the compound is 284 g. calculate the empirical formula and molecular formula of the compound.
2views - Multiple ChoiceA gaseous hydrogen and carbon-containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was found to be 0.275 g. What is the molecular formula of the compound?
- Multiple Choice
Elemental analysis of a pure compound indicated that the compound had 72.2% C, 8.50% H and the remainder as O. If 0.250 moles of the compound weighs 41.55 g, what is the molecular formula of the compound?
69views2rank - Open Question
A compound containing only sulfur and nitrogen is 69.6% s by mass; the molar mass is 184 g/mol. What are the empirical and molecular formulas of the compound?
- Multiple Choice
Glyceraldehyde (M = 90.078 g/mol), a simple monosaccharide, is comprised of 39.999% C, 6.714% H, and 53.297% oxygen by atomic weight. What would be its molecular formula?
17views2rank - Multiple ChoiceThe molar mass of a compound is 52.07 g/mol. Its empirical formula is CH. Determine the molecular formula of the compound.
- Open QuestionWhat is the molecular formula of a compound2views
- Open Question
A compound has a molar mass of 180.18 g/mol. Given the following percent composition, calculate the molecular formula: 39.99% C, 6.73% H, 53.28% O.
1views - Multiple ChoiceA 2.20-gram sample of an unknown monoprotic acid with empirical formula C3H4O3 is dissolved in 1.00 L of water. It takes 25.0 mL of a 0.500 M NaOH solution to neutralize the acid. What is the molecular formula of the acid?