Chemistry, 27.01.2020 18:31 gbrightwell
Six students were asked to perform an experiment to see how the mass of a pendulum affected its period. they were given supplies and asked to design an experiment to test the impact that the mass of the bob had on period. what would likely make their results more reliable?
a) if each student was given different equipment.
b) if a set procedure was followed by all of the students.
c) if each student was given the same hypothesis to prove.
d) if the student all perform the investigation on the same day.
Answers: 3
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What state of matter is ice a. liquid b. element c. solid d. gas
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Chemistry, 22.06.2019 19:30
Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.
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Chemistry, 23.06.2019 01:30
Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.
Answers: 1
Chemistry, 23.06.2019 04:31
Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.
Answers: 2
Six students were asked to perform an experiment to see how the mass of a pendulum affected its peri...
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