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Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Chemistry, 22.06.2019 23:30
If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
Answers: 1
Mathematics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Physics, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50
Biology, 30.10.2020 03:50
Mathematics, 30.10.2020 03:50