Physics, 03.02.2020 03:50 tryintopassenioryear
Pedro wants to create a chemical reaction between oil and water. he adds oil to a beaker of water and notices that the liquids do not mix. he then shakes the beaker and the drops of oil become suspended through the water for a few moments before returning to their separate layers. did pedro succeed in creating a chemical change? yes, because the oil was evenly suspended. yes, because the solution was permanently changed. no, because the oil only briefly mixed with the water. no, because no new substances were formed.
Answers: 2
Physics, 21.06.2019 22:30
The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '
Answers: 1
Physics, 22.06.2019 05:00
Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?
Answers: 3
Physics, 22.06.2019 11:10
Which situation will produce the greatest change of momentum
Answers: 2
Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
Pedro wants to create a chemical reaction between oil and water. he adds oil to a beaker of water an...
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