How many individual formaldehyde (CH2O = 30.03 g/mol) are found in a 32.0 mL sample%3Dof gaseous formaldehyde? The density of formaldehyde is 0.815 g/mL.O 5.23 x 1023 moleculesO 7.87 x 1023 molecules4.72 x 1026 molecules6.42 x 1023 moleculesO 8.92 x 1023 molecules Solid mercury(I) oxide decomposes when heated forming liquid mercury and oxygen gasas the only products. What mass of mercury(II) oxide must be decomposed in order tocollect 0.386 L of oxygen gas under STP conditions?O 14.8 gO 167 gO 7.46 gO 41.8 gO 80.5 g

Data given, Volume of formaldehyde = 32.0 mL The density of formaldehyde = 0.815 g/mL Molar mass of…

How many individual formaldehyde (CH20 = 30.03 g/mol) are found in a 32.0 mL sample %3D of gaseous formaldehyde? The density of formaldehyde is 0.815 g/mL. 5.23 x 1023 molecules O 7.87 x 1023 molecules 4.72 x 1026 molecules 6.42 x 1023 molecules 8.92 x 1023 molecules

How many individual formaldehyde (CH20 = 30.03 g/mol) are found in a 32.0 mL sample %3D of gaseous formaldehyde? The density of formaldehyde is 0.815 g/mL. 5.23 x 1023 molecules O 7.87 x 1023 molecules 4.72 x 1026 molecules 6.42 x 1023 molecules 8.92 x 1023 molecules

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 151AE: A 0.755-g sample of hydrated copper(II) sulfate CuSo4xH2O was heated carefully until it had changed...

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

100%

How many individual formaldehyde (CH2O = 30.03 g/mol) are found in a 32.0 mL sample
%3D
of gaseous formaldehyde? The density of formaldehyde is 0.815 g/mL.
O 5.23 x 1023 molecules
O 7.87 x 1023 molecules
4.72 x 1026 molecules
6.42 x 1023 molecules
O 8.92 x 1023 molecules

Solid mercury(I) oxide decomposes when heated forming liquid mercury and oxygen gas
as the only products. What mass of mercury(II) oxide must be decomposed in order to
collect 0.386 L of oxygen gas under STP conditions?
O 14.8 g
O 167 g
O 7.46 g
O 41.8 g
O 80.5 g

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