Determine the ΔUoreaction at 25 °C (in kJ/mol) for the following reaction: 5PbO2(s) + 4P(s, white)→P4O10(s) + 5Pb(s)

Q: e rate constant fo

A:

Q: by the tube for trapping H20 shows a 13.7-mg increase. A second sample of 121.8 mg is treated with c...

A: Here by applying principle of conservation of atom ,we can determine the percentage of each element ...

Q: A 6.785- g sample contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere fo...

A:

Q: A 25.00 mL sample of 0.260 M KOH is titrated with 0.750M HCl at 25 °C. Calculate the initial pH befo...

A:

Q: 6. A 7.85-g sample of a compound with the empirical formula C5H4 is dissolved in 301 g of benzene. T...

A:

Q: Under certain conditions the rate of this reaction is zero order in hydrogen iodide with a rate cons...

A: Given-> 2HI(g) --> H2(g)+ I2(g) Rate constant (K)= 0.0085 M.s^-1 Volume = 2.0 L Millimoles of ...

Q: What are the types of gravimetric methods? Give an examples where each method is used in an analysis...

A: Generally, there are four types of gravimetric methods which are listed below - - > 1 -Volatiliza...

Q: A chemistry student weighs out 0.105 g of sulfurous acid (H,SO,), a diprotic acid, into a 250. mL vo...

A:

Q: Why is hexane more volatile than water? Explain by mentioning the differences in their structure and...

A: Substances with strong intermolecular forces have lower vapor pressures and are less volatile, while...

Q: Enumerate at least five real-life of the collision theory of chemical kinetics

A: Collision theory states that the rate of a chemical reaction is proportional to the number of collis...

Q: 3. Draw the splitting diagram for the indicated hydrogen and determine the expected splitting patter...

A: Well, in order to draw splitting pattern we need to look the neighbouring protons which are responsi...

Q: What metal ion is responsible for the red firework?   Street lights are yellow/orange in color and n...

A: What metal ion is responsible for the red firework?   Street lights are yellow/orange in color and n...

Q: E will be more positive than E° in plution E will be more negative than E° in plution E will be more...

A:

Q: How many grams of phenol should be used to prepare 240 g of a 5% (w/w) solution in water?

A: Formula used :-  W/W % = (Mass of phenol ÷ Mass of solution )×100%   

Q: for hypochlorous acid, HClO, is 3.0×10-8. Calculate the pH after 40.0 mL of 0.100 M NaOH have been a...

A: Ka(HClO) = 3.0 × 10^-8 Volume of NaOH = 40.0 ml Molarity of NaOH = 0.100 M Volume of HClO = 40.0ml M...

Q: OH

A: The given reaction shows that there is removal of -OH group and introduction of a double bond. This ...

Q: Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of ...

A:

Q: 17. In the given reaction: Hzig) + Izg) = 2Hlg) Ke= 47.2 at 500'C. If the initial concentrations are...

A: Given [H2] = [I2] = 0.250 M Kc = 47.2

Q: Treatment of a 0.7000 g sample of impure potassium chloride with an excess of AgNO3 resulted in the ...

A: Given, mass of sample of impure KCl = 0.7000 g molar mass of KCl = 74.55 g/mol Excess reactant - AgN...

Q: What is the ratio strength (w/v) of a solution made by dissolving 16 tablets, each containing 1.5 g ...

A: Solution - According to the question - Given - w = 1.5 g v = 1250 ml (1.25 L) Formulas =  = w/v  1.5...

Q: if the pka1 is 4.80 what is the ka1  if the pka2 is 7.34 what is te ka2

A: Given- pka1= 4.80 pka = 7.34  

Q: at rate

A:

Q: Complete the following reaction by drawing the structure of the major product(s) expected.

A: The given reaction is of oxidation of alkene to alcohol in presence of water and H2SO4.  

Q: Calculate the vapor pressure of a solution made by dissolving 82.4 g of urea (molar mass = 60.06 g/m...

A:

Q: 1. Predict whether the following solutions are acidic, basic, or neutral. Provide explanations to su...

A:

Q: What is the difference between coagulation and peptization.

A: Coagulation It is the process of converting a fresh precipitate into colloidal particles by shaking ...

Q: 16. Consider the reaction represented by the equation: Fe3* (ag) + SCN- (aq) FESCN²*a 0.45 M Fe3*(aq...

A: Kc is the ratio of the equilibrium concentrations of product over equilibrium concentrations of reac...

Q: grams

A:

Q: CH3 O2N. NO2 ZON NO2

A: The given compound is Trinitro toluene ( TNT) 

Q: Dissolution constant of K3[XCl3] = 5.15 * 10-39 what is equilibrium concentration of chloride in 1....

A: Given: Dissolution constant of K3[XCl3] = 5.15 * 10-39 Initial concentration of  K3[XCl3] =  1.46 M ...

Q: 1,4-dimethylcyclohex-1-ene with BH3, H;O2, OH 4-methylpent-2-ene with mCPBA, H;O, H*

A: Given reactions are :  And  Give the product of the following compounds = ? 

Q: An iron ore was analyzed by dissolving a 1.957-g sample in concentrated HCl. The resulting solution ...

A:

Q: Enumerate and describe the types of precipitates.  How will you control the size of precipitates

A: Interpretation- We have to enumerate and describe the types of precipitates and how we will control ...

Q: To a solution containing 1.0 × 10 ^(- 2) M AgNO3 and 2.0 × 10 ^(- 2) M Pb (NO3) 2 is added, with sti...

A: Given :  Concentration of AgNO3 = 1.2 x 10-2 M  So, concentration of Ag+ = 1.2 x 10-2 M  Concentrati...

Q: 6. Enumerate and describe the types of precipitates. 7. How will you control the size of precipitate...

A: 6) Precipitation is the process of transforming a dissolved substance into an insoluble solid from a...

Q: H.

A:

Q: Be sure to answer all parts. Consider the reaction X + Y → Z Initial Rate of Disappearance of [X] (M...

A: Consider the reaction  X+Y→ Z   

Q: Why is adding mineral oil necessary during process of esterification?

A: A mineral acid catalyst is generally needed to make the reaction occur at a very useful rate. Esters...

Q: 7. The separate samples of nitric and acetic acids are both titrated with a 0.100 M solution of ...

A:

Q: 1. A gaseous compound that actually exists in the environment. 2. It is made up of small particles t...

A: 1. REAL 2. REAL 3. BOTH 4. IDEAL 5. IDEAL 6. IDEAL 7. BOTH

Q: Enter your answer in the provided box. Given the same reactant concentrations, the reaction Co(g) + ...

A:

Q: Some unknown compound reduces the freezing point of benzene from 5.53 to 4.80˚C. What is the molalit...

A: Molality of a solution can be defined as number of moles of solute dissolved per kilogram of solvent...

Q: 2- The values for A°m A2B , X3Y2 and A3Y are 2.4 , 1.5 and 1.8 respectively. Calculate the A°m for X...

A:

Q: mou 12. If 3møles of CaO react with excess C how many moles of CaC2(s) will for the equation below:?...

A:

Q: A chemist fills a reaction vessel with 0.839 g mercurous chioride (Hg, Cl,) solid, 0.302 M mercury (...

A:

Q: Using the table of standard formation enthalpies that you'll find under the ALEKS Data tab, calculat...

A: Solution -

Q: Which of these statements about the common-ion effect is most correct? (A) the solubility of a salt...

A: Correct option - - > The statement (A) is most correct The solubility of a salt MA is decreased ...