Chemistry, 13.07.2019 22:10 jennamae9826
The cations on an exchangeable sites of a 30 g soil were displaced by repeatedly washing by a salt and found to be 20 mg ca+2, 1.0 mg na+1, 39 mg k+1, 12 mg mg+2, and 18 mg al+3. the ph of the soil was 5.0. calculate the cec (cmolc/kg), percentage base saturation (pbs) and percent acidic saturation (pac) per kg of the soil.
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Which substances have the lowest melting points: ionic covalent, or metallic
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Calculate the number of molecules present in 0.750 mol of mgo.
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Chemistry, 22.06.2019 11:00
Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?
Answers: 2
Chemistry, 22.06.2019 11:50
Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
Answers: 3
The cations on an exchangeable sites of a 30 g soil were displaced by repeatedly washing by a salt a...
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