Chemistry, 27.10.2020 19:00 awkwardkid0123
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Chromium is a metal, which is an important ingredient in the preparation of stainless steel, an alloy widely used in our daily lives from household gadgets to huge machineries. Chromium provides corrosion resistance to stainless steel and prevents rusting. Chromium exists in four main isotopes, which have atomic masses as given below:
Cr-50 with atomic Mass of 49.9460442 amu
Cr-52 with atomic Mass of 51.9405075 amu
Cr-53 with atomic Mass of 52.9406494 amu
Cr-54 with atomic Mass of 53.9388804 amu
If the average atomic mass of chromium is 51.996 amu, Which isotope do you think is the most abundant isotope?
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Chemistry, 21.06.2019 18:00, mykalwashington
The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?
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Chemistry, 23.06.2019 01:30, jonmorton159
At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.
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Chemistry, 23.06.2019 02:00, hermesrobles
Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.
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