Which laboratory activity involves a chemical change?
leaving a copper penny in vinegar until it turns green
boiling salt water for several minutes until only solid salt remains
extracting iron filings from a sand mixture using a magnet
crushing a rock with a hammer to extract mineral deposits
Answers: 1
Physics, 22.06.2019 17:30
Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance
Answers: 1
Physics, 22.06.2019 22:30
The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s
Answers: 2
Physics, 23.06.2019 01:30
At what time would the magnitude of the velocity reach 36.00 km/hr
Answers: 2
Physics, 23.06.2019 05:30
Which class of lever is a baseball bat? what are the parts of a baseball bat's lever class? describe each one.enter your answer in the space provided.(this question you write your own answer.)i couldn't find the right category, so sorry if this doesn't match.
Answers: 1
Which laboratory activity involves a chemical change?
leaving a copper penny in vinegar until it tu...
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