Chemistry, 30.10.2020 14:00 aROSSconpollo
Order the steps of the experiment below according to the scientific method.
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Paul thought that the higher the temperature of water the faster it dissolved materials.
Paul tried dissolving several different substances in both cold and hot water, timing how long it took to dissolve each substance.
Paul calculated the average time to dissolve each substance in each temperature.
Paul decided to redo his experiment at several different temperatures.
Paul noticed that sugar dissolved almost instantly when added to hot tea.
Paul compared the graphs of cold water dissolving substances to the graphs of hot water dissolving substance.
Paul reported that for all substances the hot water dissolved it faster.
Answers: 1
Chemistry, 21.06.2019 14:20
Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj
Answers: 3
Chemistry, 21.06.2019 20:40
If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34
Answers: 2
Order the steps of the experiment below according to the scientific method.
Question 7 options:
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