Answers: 1
Physics, 21.06.2019 19:00, trinityhayes347
Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.
Answers: 1
Physics, 22.06.2019 18:00, championroof
Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?
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Physics, 22.06.2019 19:40, rileybaby34
Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
Answers: 3
40 points if you answer! a neutral atom has an atomic number of 20 and a mass number of 42. how man...
Biology, 23.06.2019 01:30