348 Calculate each of the following quantities: (a) Mass (g) of 8.35 mol of copper(I) carbonate (b) Mass (g) of 4.04x1020 molecules of dinitrogen pentoxide (c) Amount (mol) and number of formula units in 78.9 g of sodium perchlorate (d) Number of sodium ions, perchlorate ions, chlorine atoms, and oxygen atoms in the mass of compound in part (c)

348 Calculate each of the following quantities: (a) Mass (g) of 8.35 mol of copper(I) carbonate (b) Mass (g) of 4.04x1020 molecules of dinitrogen pentoxide (c) Amount (mol) and number of formula units in 78.9 g of sodium perchlorate (d) Number of sodium ions, perchlorate ions, chlorine atoms, and oxygen atoms in the mass of compound in part (c)

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter4: Chemical Reactions

Section: Chapter Questions

Problem 4.90P: 4-90 Lead(lI) nitrate and aluminum chloride react according to the following equation: In an...

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If the empirical formula of a compound is found to be CH2, which of the following value is a plausible molecular mass for the compound? The answer is 70.15. How did you get that?
Cephalexin is a semisynthetic cephalosporin antibacterial drug intended for oral administration. Cephalexin is an organic compound that has a molecular formula of C16H17N3O4S. If a medication bottle containing a suspension of cephalexin reads 0.720 g/0.5 cL, how many moles of cephalexin were administered to a patient which was given a dose of 12 mL?
Tetraphosphorus trisulfide, P4S3, is used in the head of wooden matches. This material is manufactured by the hearing of a mixture of red phosphorus with sulfur as shown by the following reaction: _____ P4 (s) + _____S8 (s) --< _____P4S3 (s) Balance the reaction and write the coefficients in order from left to right separated by commas. Example: 1,2,3. Do not place spaces in between the commas.
4-90 Lead(lI) nitrate and aluminum chloride react according to the following equation: In an experiment, 8.00 g of lead nitrate reacted with 2.67 g of aluminum chloride to give 5.55 g of lead chloride. (a) Which reactant was the limiting reagent? (b) What was the percent yield?
In 1997, at the United Nations Conference on Climate Change, the major industrial nations agreed to expand their re-search efforts to develop renewable sources of carbon-basedfuels. For more than a decade, Brazil has been engaged in aprogram to replace gasoline with ethanol derived from the rootcrop manioc (cassava).(a) Write separate balanced equations for the complete combus-tion of ethanol (C₂H₅OH) and of gasoline (represented by theformula C₈H₁₈).(b) What mass of oxygen is required to burn completely 1.00 Lof a mixture that is 90.0% gasoline (d=0.742 g/mL) and 10.0%ethanol (d=0.789 g/mL) by volume?(c) If 1.00 mol of O₂ occupies 22.4 L, what volume of O₂ isneeded to burn 1.00 L of the mixture?(d) Air is 20.9% O₂ by volume. What volume of air is needed toburn 1.00 L of the mixture?
Given the following balanced reaction, Fe2O3+3C-->2Fe+3CO if 1140 of fe2o3 were reacted with ecess c, what would be the percent yield for the reaction if 455g of CO were actually collected? density fe2o3=5.24g/cm3, density of co is 1.14kg/m3
Phosphoryl chloride, POCl3(g), is used in the manufacturing of flame retardants. It is manufactured in anequilibrium process in which phosphorus trichloride reacts with nitrogen dioxide to form POCl3(g)and NO(g)according to the following equation: PCl3 (g) + NO2 (g) ⇌ POCl3 (g) + NO (g) The Keq for this reaction at 800 Kc is 3.88. If 1.35 mol PCl3 (g) and 1.74 mol NO2 (g) are placed into a 2.5 Lcontainer, how many moles will there be of each gas when the reaction reaches equilibrium?
In the replacement reaction of magnesium nitrate with tin, how many grams of magnesium would be produced if 70.9 mg of magnesium nitrate? Report your answer with 3 significant figures.
The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. a) What is the molar mass of the compound? Provide an answer to two decimal places. b) What is the percent by mass of carbon in the compound? c) What is the mass in grams of chlorophyll that are in 2.185 moles of the compound? d)What quantity in moles of chlorophyll are there in 2.185 grams of the compound?
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