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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
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Chemistry, 22.06.2019 05:00
Which position represents spring in the southern hemisphere? a) b) c) d)
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Chemistry, 23.06.2019 16:30
In chile, the deepest earthquake occurred at 61.7°w longitude at a depth of 540 km. if the rocks at the focus began subducting 10 million years ago and are now 1000 km from their original position, what is the average rate of subduction in cm/yr?
Answers: 1
Chemistry, 23.06.2019 16:30
If the enthalpy value for a reaction is negative, what does that indicate about the reaction?
Answers: 1
2Fe +3S= Fe2S3 how many grams of sulfur are involved in this reaction if 95 grams of iron are needed...
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