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Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?
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Gymnast always perform on padded mats. how does the mats protect the gymnast
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Chemistry, 22.06.2019 13:50
Abeaker with 2.00Γ102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
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If you measure the mass of a model car to be 230 grams. the actual mass is 218 grams. what is your p...
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