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Chemistry, 22.06.2019 07:00
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
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Chemistry, 23.06.2019 08:00
Which term means two or more atoms that share electrons in a chemical bond? a. hydrogen bond b. moleculec. ionic bondd. element amd you
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Chemistry, 23.06.2019 16:00
Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a.it confirmed that elements should be arranged in strict order of increasing atomic mass. b.it led to elements with similar atomic numbers being grouped together. c.it allowed the elements to be placed in strict order of increasing atomic number. d.it showed that the way mendeleev grouped elements together was completely wrong.
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Chemistry, 23.06.2019 16:00
Be sure to answer all parts. the catalytic destruction of ozone occurs via a two-step mechanism, where x can be any of several species: (1) x + o3 Γ’β β xo + o2 [slow] (2) xo + o Γ’β β x + o2 [fast] (a) write the overall reaction. o3 + o Γ’β β 2 o2 o3 + xo Γ’β β x + 2 o2 xo + x + o3 + o Γ’β β xo + x + 2 o2 x + o3 Γ’β β xo + o2 (b) write the rate law for each step (using k for the rate constant). reaction 1: reaction 2: k[x][o2] k[xo][o2] k[x][o3] k[xo][o3] k[xo][o2] k[x][o] k[x][o2] k[xo][o] (c) x acts as a and xo acts as a catalyst intermediate intermediate catalyst (d) high-flying aircraft release no into the stratosphere, which catalyzes this process. when o3 and no concentrations are 3 Δβ 1012 molecule/cm3 and 9.9 Δβ 109 molecule/cm3, respectively, what is the rate of o3 depletion? the rate constant k for the rate-determining step is 6 Δβ 10Γ’β15 (cm3)2/moleculeΓ’Β·s. give your answer in scientific notation. use one significant figure in your answer. Δβ 10 molecule/s
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One similarity between all mixtures and compounds is that both...
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