Chemistry, 04.02.2020 01:53 GreenHerbz206
Gallium has two naturally occurring isotopes. one of them, gallium-69, has a mass of 68.925581 u and a percent isotopic abundance of 60.11%. what must be the mass and percent isotopic abundance of the other isotope, gallium-71?
Answers: 2
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
Chemistry, 22.06.2019 23:00
What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?
Answers: 3
Gallium has two naturally occurring isotopes. one of them, gallium-69, has a mass of 68.925581 u and...
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