1. (10.3- 1.24)/18.43 2. A penny minted after 1982 has a mass of 2.5 g Calculate total mass of three such pennies. 3. The following are placed in a beaker weighing 39.457 g: 2.689 g of NaCl, 1.26 g of sand and 5.0 g water. What is the final mass of the beaker? 4. If the beaker containing a sample of alcohol weighs 49.8767 g and the empty beaker weighs 49.214 g, what is the weight of the alcohol? 5. A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 703.55 g. From this information, calculate the density of carbon tetrachloride.

1. (10.3- 1.24)/18.43 2. A penny minted after 1982 has a mass of 2.5 g Calculate total mass of three such pennies. 3. The following are placed in a beaker weighing 39.457 g: 2.689 g of NaCl, 1.26 g of sand and 5.0 g water. What is the final mass of the beaker? 4. If the beaker containing a sample of alcohol weighs 49.8767 g and the empty beaker weighs 49.214 g, what is the weight of the alcohol? 5. A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 703.55 g. From this information, calculate the density of carbon tetrachloride.

General Chemistry - Standalone book (MindTap Course List)

11th Edition

ISBN:9781305580343

Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Chapter6: Thermochemisty

Section: Chapter Questions

Problem 6.159QP: The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by...

See similar textbooks

Similar questions

The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.
5. When 5.0 moles of potassium metal reacts with an excess of H₂0, 3.5 g of H2 are produced. 2 K (s) + 2 H20 (1) 2 KOH (aq) H₂ (g) a. Calculate the number of moles of water needed to react with all of the potassium metal. (Ans: 5 mol) + b. Calculate the theoretical yield of H2, in grams, formed when all 5.0 moles of potassium metal are consumed. (Ans: 5.04 g) c. Calculate the percent yield of the reaction, given 3.5 g (actual yield) are produced. (Ans: 69.4%)
12. A volume of 23.45 mL of NaOH was used to titrate a sample of KHP (KHC8H4O4) with a mass equal to 0.508 grams (Molar mass KHP = 204. 22 g/mol). NaOH(aq) + KHC3H4O4(aq) KNAC3H4O4(aq) + H2O(1) (a) Use this information to determine the concentration of the NaOH solution.
7:25 ◄ Search 1 Balance the following chemical equation (if necessary): 2- 3c₂²- Question 2 of 20 + Ca (C₂H3O₂)2 (aq) + Na₂CO3(aq) → Ca CO3(s) + NaC₂H₂O₂ (aq) (s) Reset 2 3 4 5 6 7 8 (1) x H₂O (g) 个 5G 85 Submit Tap here or pull up for additional resources 9 (aq) NaC₂H3O₂ Ca(C₂H3O₂) Na₂CO3 CaCO3 O
T Ma M PA USN Be * Ma E Ad G ph ph Do E Un O Ac. 6 Pec O Na O Pe Со Bas 3 Pe Stu "app.101edu.co Question 11 of 11 What is the mass in grams of H2 that can be formed from 55.8 grams of NH3 in the following reaction? 2 NH:(g) → 3 H:(g) + N:(g)
Q23. How many grams of phosphine (PH3) can form when 37.5 g of phosphorus and 83.0 L of hydrogen gas react at STP? (Which is the limiting reactant?) P4 (s) + H₂(g) → PH; (g) [unbalanced] Q24. Propane (C3Hg) reacts with oxygen gas to form carbon dioxide gas and water vapor. a) Write a balanced chemical equation for the reaction and include the appropriate physical states. b) How many liters of carbon dioxide form when 12 moles of oxygen gas react with 1.5 moles of propane at STP? Which reactant is limiting? c) How many liters of water vapor are produced if 42 moles of oxygen gas react with 25 moles of propane when the reaction pressure is 3 atm and 1000K?
les/23530384?wrap%3D1 Hwk 17 MOLE.docx OLE.docx 17 MOLE.docx (13.3 KB) ZC Hwk 17 MOLE/ MOLE STOICHIOMETRY 1) First balance the equation The combustion of a sample of butane, C,H10 (lighter fluid), produced 5.75 mol of water. C,H10 + O2 -------> CO,+ H,O a) How many moles of butane burned? b) How much oxygen was used up in moles?
Mass of salt: 3 g Mass of filter paper: 0.32 g Mass of filter paper and product: 1.47 g Mass of (Bag(POAl2 (g Moles of (Bag(PO4)2 (mol Moles of BaCl2.2H20 ((mol Mass of BaCl2.2H20 Percentage mass of BaCl2.2H20 (%) Moles of NagPO4.12H20 ( (mol Mass of NagPO4.12H20 Percentage mass of NagPO4.12H20 (%)
An unspecified amount of sulfuric acid is added to 1.19 g of solid barium chloride, then water is added to form a solution with a total volume of 1.72 L. Assuming the reaction goes to completion and that the volume does not change during the reaction, what is the molarity of the solution with respect to barium sulfate? You may assume that barium chloride is the limiting reactant. (3 sf) The pertinent balanced chemical equation is: BaCl2 (aq) + H2SO4 (aq) à BaSO4 (s) + 2 HCl (aq)
(#26) Concentration of Solutions A concentrated solution of hydrochloric acid contains 120.0 g of water and 72.0 g of hydrochloric acid. (26a) What is the total moles of components in the final solution? Type-in your answer in Blank #1. Enter only the value in regular numerals with three significant figures. 26b) What is the mole fraction for hydrochloric acid? Type-in your answer in Blank #2. Enter only the value in regular numerals with no digit or space filler and with three significant figures. (26c) Given the density of the solution as 1.189 g/mL, what is the total volume of the solution? Type-in your answer in Blank #3. The unit is milliliters, but enter only the value in regular numerals with four significant figures (26d) What is the Molarity of the solution? Type-in your answer in Blank #4. The unit is mole/L but enter only the value in regular numerals with four significant figures. Dial
5. The reaction of gaseous potassium superoxide, KO, is used in life-support systems to replace CO:(g) in expired air with O:(g). The unbalanoced chemical equation for the reaction is given below. KO:(s) + CO:(g) – K:CO:(s) + O:(g) How many moles of K:CO:(s) are produced per milligram of KO2(s) consumed?
7:23 ◄ Search 1 2- 3c₂²- Balance the following chemical equation (if necessary) for the combustion reaction of glucose: + C6H12O6 (S) + O₂(g) → CO₂(g) + H₂O (g) OH Question 1 of 20 (s) 2 3 4 CI Reset (1) C Co 5 6 7 8 9 (g) H 个 x H₂O 5G 86 Tap here or pull up for additional resources Submit O (aq) O 8

SEE MORE QUESTIONS

Recommended textbooks for you

General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning