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Determine the number of ozone molecules in the stratosphere and their mass in kilograms. Given that quantity of ozone in the stratosphere is equivalent to a 3.0 mm thick layer of ozone on earth at
Determine how many grams of sulphur dioxide can be removed using the 1000.0 kg of calcium oxide? Calcium oxide is used to remove sulfur dioxide from power plant exhaust because the two react to giv
Mrs. Kapoor goes to market and after arguing with fruit vendor is able to get price of dozen bananas decreased by Rs.1, from initial price.
1-Methyl-1-cyclopentene reacts with hydronium ion to afford two products A and B in the ratio 80:20. Propose a detailed mechanism for this reaction and give the IUPAC names of the products A and B.
In a lab, we had to measure the amount of heat released by a candle by heating up a tin of water with the candle and then determining the temperature change in the water.
P4 is prepared by heating the phosphate rock (principally Ca3 (PO4)2)with coke and sand: Write down a balanced chemical equation for the above redox reaction.
A gas mixture with x moles of Ne, 4 mol of Ar, and y moles of Xe is prepared at a pressure of 1 bar and a temperature of 298K.The total number of moles in the mixture is three times that of Ar.
Prepare the constraints for the given statements (where A is binary variable and x1 and x2 are continuous variables). If A happens then x1 + x2 <= 50, else x1 +x2 <= 100?
Calculate when it behaves as anode or as cathode the standard electron of hydrogen against a:Half-cell of Fe3+/Fe2+ (EoFe3+/Fe2+=0.77 V)
Explain what current flux is needed for depositing a layer of metallic Cr of 0.23 mm of width, on the bar of a car with a total area of 0.32 m2,
You have 2 dice both six-sided. If one is red and other is green find probability that number of red dice is greater than or equal to one on green dice?
The volume of a spherical molecule can br estimated as V=b/4NA where b is the van der Waals parameter and NA is Avogadro's number. Justify this relationship by considering a spherical molecu
If 47.0 calories of energy raised the temperature of a lead sample from 28.3 degrees Celsius to 30.1 degrees Celsius calculate the mass of the sample where the specific heat for lead is 0.0380cal/g
Explain what happens to density when gas is compressed (volume decreases)? Discuss at the atomic level. Explain why do many complex ions produce colored solutions?
If demand is high, manager has 3 choices: (i) Do nothing, that has NPV of $120,000; (ii) Subcontract, that has NPV of $140,000; and (iii) purchase second machine, with NPV of $130,000. Sketch the de
What information would you need to determine which one is denser? The atoms of 2 elements have the same atomic radius and they are packed together the same way.
When a solution of sodium lactate, CH3CH (OH) COONA, is mixed with an aqueous copper(II) solution, it is possible to obtain a solid salt of copper(II) lactate as a blue-green hydrate,(CH3CH(OH)COO)2
How many kJ of heat wood would it take to convert 50.0mL of ice at 0 C to liquid water at 22 C? The enthalpy of fusion of water is 6.0 kJ/mol and the specific heat capacity is 75J/mol C
When Cu+2 and Fe+3 reaction with the NH3 solution they produce two different types of products, One is a precipitate and one is a complex ion in solution. Write down the equations for thes
If four apartments are selected at random to be redecorated, find probabilities that (i) All will be two-bedroom apartments? And (ii) 2 will be 2-bedroom apartments and two will be 3-bedroom apartme
Discuss what the reaction is and how the initial precipitate is dissolved and reprecipitated. Use equations in your explanation.
Determine the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL is required to neutralize the .5632 g of potassium hydrogen phthalate.
Determine the equivalent mass of the acid if is found that 24.68 mL of .1165 M NaOH is required to titrate .2931 g of an unknown acid to the phenolphthalein end point.
Explain at what pH will bromothymo blue change color? What does the selection of this indicator tell you about the probable Ka of KHP?
Illustrate a Newman projection of a confirmation of 2-bromo-1-chloropropane (viewing along the carbon-carbon bond among the first and second carbon atoms) in which the two halogens are as far apart