If a wave has a frequency of 6.9536 x 109 Hz and an energy of 4.6076 x 10-24 J, what is the speed of light
As commercial aircraft engines have developed they have become more reliable. Extended-Twin Engine-Operations, ETOPS, is a maintenance approach to being confident about twin engine operations over oceans. What are the developments in
The normal boiling point for acetone is 56.5°C. At an elevation of 5300 ft the atmospheric pressure is 630. torr.What would be the boiling point of acetone at this elevation (ΔHvap = 32.0 kJ/mol)?What would be the vapor pressure of acetone at 35.0°C at this elevation?(torr)
How many J of energy must be removed when .196 kg of steam, at a temperature of 198.0°C, is cooled and frozen into .196 kg of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K)
estimate the enthalpy change for the following reaction:CH3OH(g) + HI(g) CH3I(g) + H2O(g)
Plot the stations listed in table 8.3 on the world map provided in figure 8.5
Consider a solution of a weak acid at a pH equal to its pKa. By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?Answer0.18, lower0.10, higher0.10, lower0.40, higher0.18, higher
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s later it is rising at a speed of 19 m/s. Assuming air resistance has no effect on the rock, calculate its speed at (a) at launch and (b) 4.4 s after the launch.
Tritium (3H) decays by beta emission to 3He with a half-life of 12.26 years. A sample of a tritium-containing compound has an initially activity of 0.833 Bq. Calculate the decay constant (k), the number of tritium nuclei present in the sample initially and the activity of the sample after 2 years.
A car traveling 70km/h slows down at a constant 0.50m/s^2 just by “letting up on the gas.”, Calculate the time it takes to stop? Calculate the distance it travels during the first second.
