a.) A compound's percent composition wasdiscovered to be 63.5 percent silver, 8.2 percentnitrogen, and 28.3 percent oxygen. Find out whatthe empirical formula of the compound is.b.) Calculate the percentage composition of thecompound Al2(OH)5CI, which is used in an activeantiperspirant formulation.

Answered: Image /qna-images/answer/ccc6086b-421e-42dd-811a-ce5d86c7e936.jpg

Answered: a.) A compound's percent composition…

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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If a bag of fertilizer were labeled as containing 35% K2O, b. Assume the bag is labeled as 150% P, calculate the percentage P2O5 in the bag.
A 1.95 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 4.42 mg of CO₂ and 1.81 mg of H₂O. What is the empirical formula of the compound? (Type your answer using the format CxHyOz for the compound CxHyO₂) CH20 HopHelpCh3N7 (b) A compound is composed of elements C, H, and N. A 6.300-mg sample of the unknown compound was combusted, producing 17.090 mg of CO₂ and 4.900 mg of H₂O. What is the empirical formula for this compound? (Type your answer using the format CxHyNz for the compound CxHyNz) HopHelpCh3N8 If the compound has a molar mass of 160 ± 5 g/mol, what is its molecular formula?
Fe2O36) + 2 Alis) Al2O316) + 2 Fe() ------> 159.70 26.98 101.96 55.85 Molar masses in g/mol If 40. g of iron (III) oxide are combined with 12.5 g of aluminum how many grams of molten iron are formed? O 18 g O 47 g 28 g O 26 g
6. Consider the following chemical reaction: 2 Cr(OH)3(aq) >Cr₂O3(s) + 3H₂0(1) 12.00 moles of chromium (III) hydroxide is decomposed. Calculate moles of the water produced. O 18.00 moles O 1.500 moles O 4.00 moles O 12.00 moles
The sample is analyzed and found to contain three elements, C, H and O. A 2.147 g sample of the compounds burns in O2(g) to produce 4.297 g of CO2(g) and 1.757 g of H2O(g). (a) Calculate the moles of C in the sample. (b) Calculate the moles of H in the sample. (c) Calculate the moles of O in the sample. (d) Determine the empirical formula for the compound.
S. To create pure iron, the iron ore is heated with excess cafbon. If one wants to produce 125 grams of Fe (in a process that is 87.7% efficient), how much iron ore is needed? (Assume iron ore is 100% iron oxide) Fe2O3(s) 3 C(s) → 2Fe(s) 3CO(g) +
Convert 6.76 x 1024 molecules/formula units of X4Z4 into grams of the same compound. (Assume that the molar mass of X is 32.75 grams per mole and the molar mass of Z is 51.8 grams per mole.) Assume that Avogadro's number is 6.022 x 1023. Report your answer to three decimal places.
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Example: One mole of the over of Copper is malachite a bright green mineral which has the Simplest formula CU2COŞH2 . - What is the percentage of Copper in malachite? culc b- How much Copper can be obtained from 340 g of malachite ? а —
A Freon leak in the air conditioning system of an older car releases 28 g of CF2C12 per month. Part A What mass of chlorine is emitted into the atmosphere each year by this car? Express your answer using two significant figures.
Calculate the number of carbon atoms in 3.884 gallons of octane, C8H18 (1 gallon =3.785 L;density=0.7025g/ml)
Researchers have isolated a compound that contains only nitrogen and oxygen. They found that a 4.60 g sample of this compound contains 1.40 g of nitrogen. Find the percentage composition of this compound. [ans: 30.4 % n, 69.6 % o]

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