Write The Molecular Fotmula For The Following 1-Copper Sulfate 2-Phospours Pentabromide 3-Calicum Chloride dihydrate * 4-Sodium Oxide إجابتك A- Balance The Equation NO2(g) + H2O(1) -- HNO3(1) + NO(g) B- What is formula mass of K2Cr207 (O=16g/mol , Cr=52g/mol and K=39g/mol) C- Calculate the empirical ----- formula of a C6H12O6 that following present composition by mass: C=23.75%, H=37.5% and O=40% percent. (C=12g/mol, * H=1g/mol and O=16g/mol) إجابتك What is mean the Base according to -1 Arrhenius and the Acid acoording to Bronsted ? 2- What the solvent of 100ml N2 and 25ml 02 ? Why? 3-What is Oxidation Number of ions in these compouds a- * KMNO4 b-MgH2 c-H2O2 d-N2 e-CIO3 -1

Write The Molecular Fotmula For The Following 1-Copper Sulfate 2-Phospours Pentabromide 3-Calicum Chloride dihydrate * 4-Sodium Oxide إجابتك A- Balance The Equation NO2(g) + H2O(1) -- HNO3(1) + NO(g) B- What is formula mass of K2Cr207 (O=16g/mol , Cr=52g/mol and K=39g/mol) C- Calculate the empirical ----- formula of a C6H12O6 that following present composition by mass: C=23.75%, H=37.5% and O=40% percent. (C=12g/mol, * H=1g/mol and O=16g/mol) إجابتك What is mean the Base according to -1 Arrhenius and the Acid acoording to Bronsted ? 2- What the solvent of 100ml N2 and 25ml 02 ? Why? 3-What is Oxidation Number of ions in these compouds a- * KMNO4 b-MgH2 c-H2O2 d-N2 e-CIO3 -1

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter4: Stoichiometry

Section: Chapter Questions

Problem 4.98PAE

See similar textbooks

Similar questions

Ten mL of concentrated H3PO4 (91.7% by mass, d=1.69g/mL) was accidentally poured into a beaker containing 20.0 g of NaOH. Not all the NaOH was consumed. How many grams of NaOH were left unreacted? The equation for the reaction is H3PO4(aq)+3OH(aq)3H2O+PO43(aq)
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?
Consider the generic chemical equationaA+bBcC+dD (where a, b, c, and d represent coefficients for the chemicals A, B, C, and D, respectively). a. How many possible values are there for “c”? Explain your answer. b. How many possible values are there for “c/d”? Explain your answer.
Magnesium metal (a component of alloys used in aircraft and a reducing agent used in the production of uranium, titanium, and other active metals) is isolated from sea water by the following sequence of reactions: Mg2+(aq)+Ca(OH)2(aq)Mg(OH)2(s)+Ca2+(aq)Mg(OH)2(s)+2HCl(aq)MgCl2(s)+2H2O(l)MgCl2(l)electrolysisMg(s)+Cl2+Cl2(g) Sea water has a density of 1.026 g/cm3 and contains 1272 parts per million of magnesium a5 Mg2+(aq) by mass. What mass, in kilograms, of Ca(OH)2; is required to precipitate 99.9% of the magnesium in 1.00103 L of sea water?
A 0.20 mol sample of magnesium burns in air to form 0.20 mol of solid MgO. What amount (moles) of oxygen (O2) is required for a complete reaction?
What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19 g cm-3 and contains 37.21% HCl by mass?
ic Chapter 5: EOC * OW2| (Indine teeching and leX i west.cengagenow.com/ilrn/takı-Assignrment/takevalentaclvity.do7incator aynment fake pt Balance the following word equatiou and rewrite it using cheumical fornulas. silver nitrate(aq) + sodium chloride(ag) + sodium nitrate(ag) + silver chloride(s) (Use the lowest possible cocfficients. Be sure to specify states such as (ag) or (s). If a box is not needed, leave it blank.) Write the balanced equation in net ionic form. Submit Answer Try Another Version 10 item attempts remaining O Type here to search
Be sure to answer all parts. Industrially, vanadium metal, which is used in steel alloys, can be obtained by reacting vanadium(V) oxide with calcium at high temperatures: SCa + V;0; - 5Cao - 2V In one process, 1.540 x 10g of V;Og react with 1.970 x 10'g Ca. (a) Calculate the theoretical yield of V. (b) Calculate the percent yield if S07.0 g of V are obtained. Report your answers to the correct number of significant figures.
Foreattt part of iTIS qtestfoni; tonsider FOHOWIHg Btetat: You need to make a stock solution of Ca( C2H3O2 )2 with a concentration of 6.50 M. You have a 850.0 mL volumetric flask available to make this stock solution in. You are then tasked with using this stock solution to prepare a sample for use in an experiment. The experimental sample should have a final volume of 15.0 mL and a concentration of 0.350 M Ca(C2H3O2)2. a) What is the molar mass of Ca(C2H3O2)2? b) How many moles of the solute would be needed to create the stock solution using the volumetric flask available? c) How many grams of the solute should be added to the volumetric flask to create the stock solution? d) What volume, in mL, of the stock solution should be used to prepare the experimental solution through dilution? US 目 M
many grams of Anilin GHs NH2 Should be Solved in water to Prefare dow a Solution of I liter containg oH iong Know that Kb (AnilWhe)=4*/0 with -6 2* 10 -10
+. ca(NO3), ,+ ?H3PO4 Caz(poht_+HNO3 -> Whan the eguation is balanced, the coefficient in frot of H3P04 is ?
The indicator of Moher regent is. O KCro4. O KMN04.