Username Password

Save on Textbooks! Other   Other Homework Help ( 1213 ) Math   Math- Algebra 1 ( 2437 )   Math- Algebra 2 ( 1189 )   Math- Calculus ( 381 )   Math- Geometry ( 594 )   Math- Other ( 1522 )   Math- Precalculus ( 408 )   Math- Trigonometry ( 285 ) Biology   Biology- Animal ( 155 )   Biology- Cell ( 530 )   Biology- Ecological ( 109 )   Biology- General ( 651 )   Biology- Microbiology ( 100 ) Business   Business- Accounting ( 674 )   Business- Finance ( 511 )   Business- Other ( 454 ) Chemistry   Chemistry- Biochem ( 162 )   Chemistry- Organic ( 166 )   Chemistry- Other ( 1330 ) Economics   Economics- Macroeconomics ( 829 )   Economics- Microeconomics ( 610 ) Essay Service   Essay Correction ( 96 )   Essay Writing ( 396 ) History   History- World ( 831 )   US History- Post 1877 ( 472 )   US History- Pre 1877 ( 347 ) Language   English ( 829 )   Foreign Languages ( 118 )   World Literature ( 196 ) Physics   Physics- Electricity, Magnetism ( 248 )   Physics- General ( 1736 )   Physics- Mechanical, Heat, Sound ( 343 )   Physics- Wave, Quantum Physics ( 114 ) z Medical Questions Your Question have been doing this for awhile now and am stuck and frusterated..i need to check over these questions because i suck at chemistry. its not that i am lazy..i just cant figure this out..these are the questions im having problems with... 1. A cylinder contains a mixture of hydrogen and chlorine molecules. Compare without doing any calculations the following: a. the relative mass of the molecules b. the temperature of each gas c. the average kinetic energy of the molecules d. the average speed of the molecules 2. Find the number of atoms in: a. 52.5g of calcium metal b. 1.5 mol of Carbon c. 1.5 mol of carbon dioxide 3. Find the volume of a gas at -30�C and 0.75atm if it occupies a volume of 255L and 1.25atm. 4. Write the correct formula for the following: a) hydrochloric acid b) nitrous acid c) sulphuric acid d) bromic acid e) strontium oxide f) rubidium chlorite g) manganese (II) iodite h) tungsten hexafluoride i) hypoflorous acid j) ammonium hydroxide k) hydrosulphuric acid l) sodium peroxide m) phosphorus n) oxygen gas o) potassium perbromate 5. Write the correct formula for each of the following ions: a) sulphite b) hydroxide c) nitrate d) dihydrogen phosphate e) hydrogen sulphate ion f) periodate g) carbonate h) hypophosphite i) flourate j) bromite 6. Name the following compounds: a) ZnI2 b) BrF c) H2O2 d) FeSO3 e) CaH2 f) BaHPO3 g) CuNO3 h) MnO2 i) NH4OH j) AgIO k) SO2 l) Li2O 7. Balance the following equations: i) PbCl2 + AgNO3 → AgCl + Pb (NO3) 2 ii) AlCl3 + NH4OH → Al(OH)3 + NH4Cl iii) FeCl3 + Ca(OH)2 → CaCl2 + Fe(OH)3 iv) Pb(ClO3)2 + K2SO4 → PbSO4 + KClO3 v) Na + HOH → NaOH + H2 vi) Zn + HCl → ZnCl2 + H2 vii) Al + AgCH3COO → Al(CH3COO)3 + Ag viii) MgO + HNO3 → Mg (NO3)2 + H2O ix) MnO2 → Mn3O4 + O2 b) Why is it incorrect to alter the chemical formula when balancing an equation? 8. Write and balance equations for the following reactions: i) zinc sulphate + barium nitrate → ii) gold (III) sulphate + barium chloride → iii) zinc + mercourous nitrate → iv) tin + antimony (V) chloride → v) calcium + water → vi) ferrous bromide + phosphoric acid → vii) the complete combustion of ethane, C2H4 → viii) calcium carbonate + hydrobromic acid → 9 a. How many grams of sulphuric acid will neutralize 10.0g of sodium hydroxide b. What volume of water vapour at 100�C and 110 kPa would also be produced 10. Calculate the mass of potassium chlorate needed to prepare 5.00L of oxygen gas at 24.0�C and 0.950 atm. (The equation is: KClO3 → KCl + 3/2O2) 11.Consider the following reaction, which takes place in an autoclave at 250�C and 800 atm. NH3(g) + 7/4O2(g) → NO2(g) + 3/2H2O(g) Into the reaction vessel has been placed 200L of NH3(g) and 120L of O2(g). The reaction is allowed to go to completion. Determine the quantity, in moles, of the gas that remains un-reacted. 12. A compound containing titanium (Ti) and chlorine is analyzed by converting all of the titanium into 1.20g of TiO2 and all of the chlorine into 6.45g of AgCl. What is the simplest formula for the original compound? 13. Estrogen is a female sex hormone that is known to contain 80.0% carbon, 8.2% hydrogen, and the remainder oxygen. If 793mL of estrogen is found to have a mass of 4.97g at 0.90atm and 200�C, find the molecular formula for estrogen. 14. Farmers use fertilizers mainly to replace depleted nutrients in the soil. Liquid ammonia and ammonium nitrate are two substances that are used to replace essential nitrogen in the soil. Based on the percentage of nitrogen by mass, which of these two chemicals would be the better fertilizer? Assume that the cost per kilogram of these chemicals is the same. 15. Write equations for the neutralization reactions that result in the formation of the following salts: a) lithium carbonate b) copper (II) chlorate c) aluminium sulphate d) ammonium iodide 16. For each of the following situations, identify those for which a reaction is likely to occur. For those that do occur, write a net ionic equation. a) Chromium dipped into silver nitrate b) Gold impressed in hydrochloric acid c) Nickel pellets dropped into a bath of sulphuric acid d) Zink dipped into a solution of lead (II) nitrate 17. An industrial plant that specializes in cleaning up waste liquids is confronted with a problem of separating the metal ions found in a large vat of solution. By analysis, the solution was found to contain varying quantities of silver, barium, and iron(III) ions. Suggest a procedure for separating the metal ions via precipitation. 18. A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10ֿ�mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution. Please Login to Answer the Question LOGIN

wireless broadband  Online Courses | Cheap Car Insurance  |  CRM  |   Copyright © 2003-2009 StudentQuestions.com Terms of Service | Resources