If a particle is traveling at 98% of the speed of light in a vacuum (2.998 x 10³ m/s), what is its velocity in miles per hour? 1.00 miles = 1.61 km. A None of these (B 6.57 x 108 6.70 x 108 (D 6.84 x 108 E) 6.90 x 108
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- A sample of nitrogen gas, N2, travels 17.0 cm in 4.5 minutes. How long in minutes would it take chlorine gas, Cl2, to travel a distance of 17.0 cm under the same conditions?5.6 x 1012 is ... * Small than 1 O Larger than 1 60,900,000 is equal to * 6.9 x 10° 6.09 x 106 O 6.09 x 107 O 6.9 x 107Given the measurement of 7.00 L, (a) what is the accuracy of this measurement? (b) what is the precision of this measurement?
- The distance from the sun to Earth is 1.50 x 108 km. The speed of light is 3.00 x108 m/s. How many round trips between Earth and the sun could a beam of light make in one day?smoke particles in air typically have masses of the order of 10^-16 kg. The rapid, irregular motions of these particles caused by collisions with air molecules can be observed with a microscope. Assume a particular type of smoke particle has a mass of 3.00 x10^-16 kg and is in a room with a temperature of 300 K. a) if instead you were considering a hydrogen gas molecule (m= 3.34x10^-26 kg) at 300 K, would the average translational kinetic energy be larger than, smaller than or equal to that of the smoke particle? b) would the rms speed of the hydrogen atom be larger than, smaller than, or equal to that of the smoke particle?An atom of krypton has a radius Kr 88. pm and an average speed in the gas phase at 25°C of 172.m/s. Suppose the speed of a krypton atom at 25°C has been measured to within 1.0%. Calculate the smallest possible length of box inside of which the atom could be known to be located with certainty. Ikr Kr Write your answer as a multiple of and round it to 2 significant figures. For example, if the smallest box the atom could be in turns out to be 42.0 times the radius of an atom of krypton, you would enter "42.1k" as your answer. Kr x10 × Ś
- A student finds that 24.96 g of water at 24.9 C(density=0.9971 g/cm3) is required to completly fill an empty flask. The water is removed and completely dried; granular solid copper weighing 51.24g is then added to the flask. With the copper present in the flask, it was determined that 19.24 g of water was required to fill the remaining space in the flask completly 1.) volume of the empty flask 2.) volume of the copper 3.) density of the copperIn the opening scene of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces a gold (D = 19.32 g/cm²³) idol of dimensions 5.0 inches by 5.0 inches by 5.0 inches with a bag of sand of approximately double the volume with sand (D = 3.65 g/cm³). Is the bag of sand really equal to the gold idol or will Dr. Jones set off the trap? Explain your answer and include a mathematical explanation. ML Cm3Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 ×102 kg/m3.In a certain experiment, from the reaction of 2.91 mL of methanol with 2.88 g of oxygen, 2.27 gof carbon dioxide was obtained.(a) What type(s) of chemical reaction is (are) occurring in this experiment?(b) What equipment do you think was used to measure the volume of methanol in thisexperiment?(c) Calculate the percent yield of the carbon dioxide in this experiment
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