Determine how many electrons were eliminated
If two identical ions are apart by a distance r = 6.2 Å, the repulsive electric force which each applies on the other is 5.40 x 10-9 N. Determine how many electrons were eliminated from the neutral atom to form each and every ion?
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When two fire-crackers generate a sound level of 95 dB if fired simultaneously at a certain place, then what will be the sound level when only one is exploded?
The half-life of H2O2 at 298 K was found to be 0.41 s, while that at 1000 K was 0.07 s. estimates the Arrhenius activation energy
A seismographic station obtains S and P waves from an earthquake, separated in time by 15.8 second. Suppose that the waves have traveled over the similar path at speeds of 4.50 km/s and 8.20 km/s. Determine the distance from the seismograph to the
How can identify the substance oxidized and the substance reduced? Find out the oxidizing agent and the reducing agent.
A 250.0-gram sample of a white solid is known to be a mixture of BaCl2, KNO3, and NaCl. When 100.0 g of this mixture is dissolved in the water and allowed to react with excess H2SO4
Supposing that this star is basically at the edge of the galaxy, each of the stars in the galaxy consists of a mass identical to that of the star and the stars are distributed equally in a sphere about the galactic center, approximate the number o
Determine (i) average number of computers waiting for adjustments? (ii) average number of computers not in working order? (iii) probability system is empty? (iv) average time in quere? (v) average time in system?
A model rocket engine consists of an average thrust of 5.26 N. It consists of an initial mass of 25.9 g, which comprises fuel mass of 13.5 g. The period of its burn is around 1.90 s. (Suppose that all the fuel is consumed.) (i) Determine the avera
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