41516I.(Not Answered)How many moles of As,O5 contain 2.00 × 10-0 oxygen atoms?1.66 x 1036.64 x 10° (Correct answer)3.32 x 1041.33 x 10-52.00 x 1020

Answered: Image /qna-images/answer/f6077f95-b598-40e4-98ca-c742a3c86cfb.jpg

Answered: I. (Not Answered) How many moles of…

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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An unknown pure anhydrous chloride salt sample has been found to contain an average of 60.59% Cl⁻ (35.45 g/mol) after gravimetric analysis. Which of the following is the most probable identity of the sample? choices: a. It’s impossible to know. b. Sodium chloride (58.44 g/mol) c. Calcium chloride (110.98 g/mol) d. Magnesium chloride (95.21 g/mol) e. Potassium chloride (74.55 g/mol)
Empirical formula A11 calculate the empirical formula of each compound with the following percent composition. 1. 79.8%C, 20.2%H 2. 67.6%Hg, 10.8%S, 21.6%O 3. 94.1% O, 5.9H 4. 17.6% Na, 39.7% Cr, 42.7%O 5. 27.59C, 1.155H, 16.09%N, 55.17%O Please provide only typed answer solution no handwritten solution needed allowed
How many oxygen atoms are in 1.0 x 10^-2 mols of CO2? (SHOW WORK AND ROUND FINAL ANSWER TO 2 DECIMAL PLACES)
A. is asking 2.3E23 molecules of sugar would weigh how much in grams B is asking 2.3 moles of h20 would weigh how many grams C. is asking how many grams would 8.6 moles of sulfuric acid weigh This is for a ungraded practice quiz for a test tomorrow so I need to learn how to do it asap, Thank You.
STEP 1. Calculate the %O in Cr2(CO3)3 to 4 significant figures. %O = STEP 2. How many moles of Cr2(CO3)3 are in 100.0 g ? note: don't use scientific notation, use 4 significant figures (100.0 g) = ____ mol Cr2(CO3)3 STEP 3. How many formula units in 100.0 g of Cr2(CO3)3 ? note: 1 mol = 6.022 x 1023 things, use 4 significant figures note: use scientific notation as follows, 6.022 x 1023 = 6.022E23 (100.0 g) = ______ FU of Cr2(CO3)3 STEP 4. How many grams of O in 100.0 g of Cr2(CO3)3 ? note: don't use scientific notation, use 4 significant figures (100.0 g) = ____mol O (100.0 g) = ____g of O STEP 5. How many oxygen atoms in 100.0 g of Cr2(CO3)3 ? note: 1 mol = 6.022 x 1023 things note: don't use scientific notation for the first answer, use 4 significant figures for both answers (100.0 g) = ____mol O note: use scientific notation as follows, 6.022 x 1023 = 6.022E23 (100.0 g) = ____atoms of O
A complete combustion of octane, C8H18, a component of gasoline, proceeds as: C8H18(l ) + O2(g) → CO2(g) + H2O(l) {unbalanced equation} Atomic weights (g/mol): C=12, H=1, O=16 How many moles of oxygen are needed to burn 2.4 moles of octane? Enter final answer with TWO decimal places (e.g. 37.18 or 35.00 or 98.20); numeric answers only, do not include the units.
What is the mass percent of Zn in ZnSO4? ( use the molar mass given below and give your answer to 4 sig fig) molar mass of Zn 65.39 S 32.06 O 16.99 Mass percent of Zn=?% How many grams of zincare in 50.0g of ZnSO4? answer: ? g of Zn
0.848g of Na2B4O7.10H2O into a crucible. After hearing the sample for a short time and allowing the crucible to cool, the two students determine that the sample has a mass of 0.525g. They then do a quick calculation. based on this calculation, what should they do next?
Strychine has a molecular mass of 334.45 g/mol and a percentage composition of 75.42% C, 6.64% H, 8.38% N and the remaining % is oxygen. Calculate the molecular formula. All final answers = SN (when applicable), SF & Units.
6. What is the empirical formula of the substance containing 0.423 g C, 2.50 g Cl and 1.34 g F ? Group of answer choices a, CClF3 b, CCl3F c, C2ClF2 d, CCl2F2
Question 5 A) What is the answer to the following problem, reported to the correct number of significant figures? (8.000−7.009) / (10.00∗0.010000) A. 9.910 B. 9.91 C. 9.9 D. 0.9910 E. 0.99 B) Hydrates take the form: compound·nH2O. An unknown hydrate has a molar mass of 537 g/mol.If the anhydrate has a molar mass of 375. g/mol, what is the integer n in the hydrate. A. 5 B. 6 C. 7 D. 8 E. 97. C) Calculate the change in enthalpy for the following reaction: A + 3B→D ∆Hrxn=? Given: 3A + 12B→6C ∆Hrxn= 60.0 kJ 2B + 2D→4C ∆Hrxn= 60.0 kJ Express your answer in kJ. A. -20.0 kJ B. -10.0 kJ C. 0.0 kJ D. 10.0 kJ E. 20.0 kJ
The number of moles corresponding to 4.8g of C5H10 is 0.068. Select one: True False

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I. (Not Answered) How many moles of As,O5 contain 2.00 x 10-0 oxygen atoms? 1.66 x 103 6.64 x 10° (Correct answer) 3.32 x 104 1.33 x 10 2.00 x 1020