Chemistry, 14.07.2019 23:00 JAYDENJONES0111
Under normal conditions, when salt is added to water a. the boiling point increases b. the boiling point decreases c. the boiling point remains the same d. the melting point remains the same
Answers: 2
Chemistry, 21.06.2019 14:20
Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) ā 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) ā 3 o2 (g) + b2h6 (g), Ī“hoa = +2035 kj (b) 2 b (s) + 3 h2 (g) ā b2h6 (g), Ī“hob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) ā h2o (l), Ī“hoc = ā285 kj (d) h2o (l) ā h2o (g), Ī“hod = +44 kj
Answers: 3
Chemistry, 21.06.2019 16:00
Endeleev saw trends in the physical and chemical properties of elements when he organized them by
Answers: 2
Chemistry, 21.06.2019 17:10
Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.
Answers: 2
Under normal conditions, when salt is added to water a. the boiling point increases b. the boiling...
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