An indiviual wishes to deposit an amount
An indiviual wishes to deposit an amount of money now and $100 every six months so that at the end of five years $1500 will have been accumulated. With interest 4% per year, compounded semiannually, how much should be deposited?
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A top-level room in a high-rise building (L/W of 1) has a double-hung window (2m by 4m) of average fit that is not weather stripped. In summer, a wind of 10 m/s blows the window at an incident angle of 30 degree.
Sketch approximately the reaction potential for an exothermic reaction. Indicate intial, final, transition state, activation energy, reaction enthalpy and sketch the effect a catalyst may have.
The decomposition of N2O5 in CCL4 is a first order reaction. If 2.56 mg of N2O5 is present initially and 2.50 mg is present after 4.26 minutes at 55 degrees Celsius what is the value of the rate constant K?
Suppose that 1.419 g of impure barium hydroxide is dissolved in enough water to produce 213 mL of solution. What percentage of the impure sample was barium hydroxide?
The temperature of a block of copper metal (molar mass 63.55 g mol-1) fell by 8.52 K when the copper block released 64.5 J of heat. What is the mass of the copper block?
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 308 torr at 25 oC?
Determine the angle theta degrees that requires the minimum torque T to keep the seam closed. (Hint: use Mohr's circle). Give the answer in degrees.
How much 235^U is consumed per year (in g/y) to produce enough electricity to continuously run a 100 W light bulb? (b) How much coal (in g/y) would be needed (coal has a heat content of about 12 GJ/ton)? Assume a conversion efficiency of 33% o
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