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Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas
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Chemistry, 23.06.2019 04:00
Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese
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Amajor part of the modern atomic model is that the location and of an electron are not known exactl...
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