Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes. chlorine occurs as 35cl (75.8%) and 37cl (24.2%); bromine occurs as 79br (50.7%) and 81br (49.3%); boron compounds also stand out owing to the two isotopes 10b (19.9%) and 11b (80.1%). for the compound chlorocyclohexane, c6h11cl: at what masses do the molecular ions occur? (list in order of increasing mass separated by commas, e. g. 120,122.) what are the percentages of each molecular ion? (list to nearest 1% in order of increasing mass separated by commas, e. g. 55,45.)
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Chemistry, 22.06.2019 14:30, Dreynolds1667
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
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Chemistry, 22.06.2019 20:30, dinapaul424
Which states of matter have particles that move independently of one another with very little attraction?
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Chemistry, 22.06.2019 22:30, skinniestoflegends
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
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Chemistry, 22.06.2019 23:00, ashyding4800
Movement that is like a t a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. transfers energy from one location to another a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave
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Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and b...
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