Chemistry, 27.11.2019 05:31 kyusra2008
•describe the various types of testing done to ensure the effectiveness of ads and discuss the rationale for each of these tests. understand the various types of pretests and posttest including lab tests, field studies, starch tests, day after recall, concept tests, etc. • what is the difference between a lab test and field test?
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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
Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
Answers: 1
Chemistry, 22.06.2019 20:10
The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)
Answers: 3
Chemistry, 22.06.2019 23:00
The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:
Answers: 1
•describe the various types of testing done to ensure the effectiveness of ads and discuss the ratio...
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