• Q : Formaldehyde trimerizes....
    Chemistry :

    Formaldehyde, H2C = O, is known to all biologists because of its usefulness as a tissue preservative. When pure, formaldehyde trimerizes to give trioxane, C3H6O3, which, surprisingly enough, has no

  • Q : Sulfur to form sulfur hexafluoride....
    Chemistry :

    Elemental sulfur occurs as octatomic molecules, S8. What mass of fluorine gas, F2, is needed for complete reaction with 38.5 g sulfur to form sulfur hexafluoride?

  • Q : Enthalpy of vaporization of chloroform....
    Chemistry :

    The enthalpy of vaporization of chloroform (CHCl3) is 29.4 kJ mol-1 at its normal boiling point of 334.88 K. Calculate (a) the entropy of vaporization of chloroform at this temperature and (b) the

  • Q : Oleum or fuming sulfuric acid....
    Chemistry :

    Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 .

  • Q : Potassium tert-butoxide in tert-butyl alcohol....
    Chemistry :

    Compound A (C6H14) gives three different monochlorides on photochemical chlorination. One of these monochlorides is inert to E2 elimination. The other two monochlorides yield the same alkene B (C6H

  • Q : Reaction between propanoyl chloride....
    Chemistry :

    Predict the product, if any, of reaction between propanoyl chloride and the following reagents:

  • Q : Rotational equilibrium of a rigid body....
    Chemistry :

    What conditions must be present for (a) translational equilibrium and (b) rotational equilibrium of a rigid body? If these conditions for equilibrium are satisfied, is the rigid body necessarily in st

  • Q : Question regarding aqueous ammonia....
    Chemistry :

    Silver iodide, Agl, is less soluble in aqueous ammonia than either AgBr or AgCl. What two factors could contribute to this result? Explain.

  • Q : Vertices of the image....
    Chemistry :

    Find the vertices of the image of ΔABC under the translation T-2,5. To what complex number does this correspond?

  • Q : Dissolution of silver chloride in aqueous ammonia....
    Chemistry :

    Explain the dissolution of silver chloride in aqueous ammonia and its reprecipitation in terms of ionic equilibria and solubility product.

  • Q : Connection with reflection of light through prisms....
    Physics :

    Show that in any prism the area of a right section is equal to the product of the base and the sine of the angle between a lateral edge and the base. this relation is used in connection with the re

  • Q : Difference between singlet and triplet state....
    Chemistry :

    Explain the fundamental difference between singlet and triplet state. From this fundamental difference explain why phosphorescence takes at least 100,000 times more to occur than fluorescence.

  • Q : Calculating the cubed roots....
    Mathematics :

    Find the cubed roots of 27i. (So n=3) Answer should be in standard form. Use 27 cis (90 degress), which is the trigonometric from of 27i, to do the problem.

  • Q : Calculating the molarity of the solution....
    Mathematics :

    Commercial concentrated aqueous ammonia is 19.7% NH3 by mass. The solution has a density of 0.900 g/mL. Calculate the molarity of the solution, molality of the solution, and mole fraction of NH3.

  • Q : Complex number in trigonometric....
    Mathematics :

    Write the complex number in trigonometric for r(cos θ + i sin θ), with θ in the interval [00, 3600).

  • Q : Complex number in rectangular form....
    Mathematics :

    Write the complex number 6(cos 330 degrees + i sin 330 degrees) in rectangular form. Please show all of the work.

  • Q : Molecular fluorescence and phosphorescence....
    Chemistry :

    Explain, with the help of a suitable clearly-labeled diagram, the difference between molecular fluorescence and phosphorescence. Your explanation should include discussion of the time frames involv

  • Q : Question regarding the instantaneous velocity....
    Physics :

    Draw the graph of as a function of and draw the secant lines whose slopes are the average velocities in part (a) and the tangent line whose slope is the instantaneous velocity in part (b).

  • Q : Question regarding the triangular pyramid....
    Mathematics :

    A triangular pyramid begins with these coordinates:

  • Q : Population of the rabbits....
    Mathematics :

    Assuming perfect conditions exist and continue, how many rabbits are there in 2.5 years (30 months)? What is happening with the population of the rabbits?

  • Q : Coefficient of static friction between the tires of a car....
    Physics :

    The coefficient of static friction between the tires of a car and a horizontal road is µs = 0.6. If the net force on the car is the force of static friction exerted by the road,

  • Q : Calculate the efficiency of a carnot engine....
    Physics :

    Calculate the efficiency of a Carnot engine running between a low temperature of 27.0°C and a high temperature of 387°C. Determine the change in efficiency if you were to

  • Q : Elongation of electrical conducting material....
    Physics :

    An experiment is performed to determine the percent elongation of electrical conducting material as a function of temperature. The resulting data is listed below. Predict the percent elongation for

  • Q : Initial speed of the cars....
    Physics :

    Find the initial speed of the cars. How much work did the actor do?

  • Q : Magnitude and direction of dot average velocity....
    Physics :

    Find the magnitude and direction of the dot's average velocity between f = 0 and I = 2.0 s. Find the magnitude and direction of the instantaneous velocity at t = 0, I = 1.0 s, and 1= 2.0 s.

©TutorsGlobe All rights reserved 2022-2023.